JP7190829B2 - Heat medium heating system - Google Patents

Description

The present invention relates to a heating medium heating system for heating a heat medium for heat consumption supplied to a heat consuming terminal.

Patent Document 1 (Japanese Patent Application Laid-Open No. 2016-205798) describes a heating medium heating system that heats hot water with two heating devices and uses the hot water for hot water supply. This heating medium heating system is a system for supplying hot water to a hot water tap (69). It is configured to heat with a vessel (Wh)). Specifically, the hot water supplied from the first heating device to the second heating device is about 30°C, and the second heating device further heats the hot water at about 30°C and supplies it to the hot water tap (69). do. In this way, the first heating device adjusts the hot water supplied to the second heating device to a relatively low temperature in advance, so that the temperature of the hot water, for example, between the first heating device and the second heating device It doesn't matter if you don't exchange information. By the first heating device performing the operation as described above, for example, even if the first heating device is additionally installed later in a place where the second heating device (water heater (Wh)) is already installed, The second heating device may perform the same operation as before the first heating device is installed.

Patent Document 2 (Japanese Unexamined Patent Application Publication No. 2006-349301) describes a heating medium heating system for heating a heating medium supplied to a heat consumption terminal such as a heater (4). Specifically, in the system of Patent Document 2, the heat medium supplied to the heater (4) as the heat consumption terminal is supplied with the heat recovered from the two heating devices, that is, the fuel cell unit (1). It is heated by a second heat exchanger (Hx2) and a heat exchanger (34) supplied with heat generated by a burner (31). However, the system of Patent Document 2 is a system in which the fuel cell unit (1), the second heat exchanger (Hx2), the burner (31), the heat exchanger (34), etc. are integrated. It is not a system that is installed additionally later.

Paragraph 0067 of Patent Document 3 (Japanese Patent Application Laid-Open No. 2012-107793) describes a heating medium heating system in which two heating devices heat a heating medium supplied to a heat consumption terminal (heating load). That is, the heat medium heating system of Patent Document 3 includes a heat consumption heat medium circulation path (circulation path 15) through which heat consumption heat medium supplied to a heat consumption terminal (heating load) circulates, and a heat consumption heat medium circulation path (circulation path 15). A first heating device (heating load heat exchanger 14) capable of heating the heat medium for heat consumption after the heat is used at the heat consumption terminal in the middle of the circulation path, and a heat medium for heat consumption in the middle of the heat medium circulation path for heat consumption. A second heating device (gas hot water heater 6) capable of heating a heat medium for heat consumption is provided on the downstream side closer to the heat consuming terminal than the first heating device.

Japanese Patent Application Laid-Open No. 2016-205798 JP 2006-349301 A JP 2012-107793 A

Although Patent Document 3 describes that a heat medium supplied to a heat consumption terminal (heating load) is heated by two heating devices, specifically, in order to supply heat to the heat consumption terminal It is not described how the temperature of the circulating heat transfer medium is adjusted using the first heating device and the second heating device.
In particular, in a configuration in which the first heating device and the second heating device cannot perform information communication, the heating control of the heat medium in the first heating device and the heating control of the heat medium in the second heating device However, in the system described in Patent Document 3, how should the temperature of the heat medium supplied to the heat consumption terminal be adjusted using the first heating device and the second heating device? Not sure if it's good.

The present invention has been made in view of the above problems, and an object of the present invention is to make it impossible to know how the first heating device and the second heating device are mutually controlling the heating of the heating medium. However, the object of the present invention is to provide a heat medium heating system capable of supplying a heat medium having an appropriate temperature to a heat consuming terminal.

A characteristic configuration of the heat medium heating system according to the present invention is a heat medium heating system for heating a heat medium for heat consumption supplied to a heat consumption terminal,
a heat-consuming heat medium circulation path through which the heat-consuming heat medium supplied to the heat-consuming terminal circulates at a predetermined target temperature;
a first heating device that can heat the heat medium for heat consumption after the heat has been used at the heat consumption terminal in the middle of the heat medium circulation path for heat consumption;
a second heating device capable of heating the heat medium for heat consumption on a downstream side closer to the heat consumption terminal than the first heating device in the middle of the heat medium circulation path for heat consumption,
The first heating device includes a first heat source that generates heat, and a first heat medium whose temperature is raised by the heat supplied from the first heat source, and the heat medium circulation path for heat consumption. a first heating unit that exchanges heat with the heat consuming heat medium flowing from the heat consuming terminal; and the heat consuming heat medium flowing from the heat consuming terminal through the heat consuming heat medium circulation path. to the second heating device bypassing the first heating unit, and the flow rate of the heat-consuming heat medium flowing through the first heating unit a flow rate adjusting mechanism capable of adjusting the flow rate of the heat medium for heat consumption flowing through the first heating unit, and the heat medium for heat consumption flowing through the first heating unit and the heat flowing through the bypass flow path and a second temperature measuring means for measuring the temperature of the heat medium for heat consumption downstream of the junction with the heat medium for heat consumption, and measuring the temperature of the first heat medium supplied to the first heating section. and adjusting the temperature to be equal to or higher than the certain target temperature within an adjustable range, and the temperature of the heat medium for heat consumption on the downstream side of the merging portion measured by the second temperature measuring means becomes the certain target temperature. the flow rate of the heat medium for heat consumption flowing through the first heating unit and the flow rate of the heat medium for heat consumption flowing through the bypass channel are adjusted by the flow rate adjustment mechanism,
The second heating device includes a second heating unit capable of heating the supplied heat medium for heat consumption, and a first temperature measuring the temperature of the heat medium for heat consumption downstream of the second heating unit. and a measuring means for performing a heating operation so that the temperature of the heat medium for heat consumption measured by the first temperature measuring means reaches the certain target temperature when the heat consuming terminal is in operation. It is in.

According to the above characteristic configuration, the second heating device includes the first temperature measuring means for measuring the temperature of the heat-consuming heat medium downstream of the second heating unit capable of heating the supplied heat-consuming heat medium. have. Then, the second heating device performs a heating operation so that the temperature of the heat medium for heat consumption after heating measured by the first temperature measuring means reaches the target temperature. That is, the second heating device determines by itself whether it is necessary to heat the heat medium for heat consumption by the second heating unit, and supplies the heat medium for heat consumption at the target temperature to the heat consumption terminal. can operate as if

In addition, in the first heating device, in the first heating unit, the first heat medium adjusted to a target temperature or higher within an adjustable range by the heat supplied from the first heat source unit and the heat medium circulation path for heat consumption Heat is exchanged with the heat medium for heat consumption flowing from the heat consumption terminal through the .
First, the case where the temperature of the first heat transfer medium can be adjusted to the target temperature or higher will be described below. In this case, in the first heating unit, the heat medium for heat consumption exchanges heat with the first heat medium having a temperature higher than the target temperature, so the temperature of the heat medium for heat consumption after the heat exchange is close to the target temperature or That's it.
Furthermore, since the first heating device has a bypass flow path that allows the heat medium for heat consumption to bypass the first heating unit, the heat for heat consumption that has flowed through the first heating unit The medium can be set to a temperature close to the target temperature or higher than the target temperature, and the heat medium for heat consumption that has flowed through the bypass channel can be prevented from being heated by the first heating unit. Then, the heat medium for heat consumption flowing through the first heating section is controlled by the flow rate adjusting mechanism so that the temperature of the heat medium for heat consumption downstream of the junction measured by the second temperature measuring means reaches the target temperature. The flow rate of the heat medium and the flow rate of the heat medium for heat consumption flowing through the bypass channel are adjusted. As a result, the heat-consuming heat medium at the adjusted temperature is supplied from the first heating device to the second heating device through the heat-consuming heat medium circuit, and as described above, the heat medium for heat consumption is supplied to the second heating device as required. Accordingly, the heat medium for heat consumption is heated.
Next, a case where the temperature of the first heat transfer medium cannot be adjusted to the target temperature or higher will be described. In this case, in the first heating unit, the heat medium for heat consumption exchanges heat with the first heat medium whose temperature does not reach the target temperature, so the temperature of the heat medium for heat consumption after heat exchange does not reach the target temperature. All of the heat medium for heat consumption flows through the first heating section by the flow control mechanism, but the temperature of the heat medium for heat consumption downstream of the confluence section measured by the second temperature measuring means also reaches the target temperature. not reached. As a result, the heat medium for heat consumption whose temperature does not reach the target temperature is supplied from the first heating device to the second heating device through the heat medium circulation path for heat consumption. The heat medium for heat consumption is heated up to the target temperature.
Also, the first heating device can be configured to include at least one of a cogeneration device, a heat pump device, and a solar water heater, and the second heating device can be configured to include at least one of a combustion hot water heater and an electric heater. The heat consumption terminal can be configured to include at least one of a floor heating device, a bathroom heater/dryer, and a desiccant air conditioner.
Therefore, even if the first heating device and the second heating device cannot know how the heating control of the heat medium is performed, the heat medium at an appropriate temperature can be supplied to the heat consumption terminal. A heat medium heating system can be provided. Therefore, for example, even if the first heating device that cannot exchange information with the second heating device is additionally installed in a place where the second heating device and the heat consumption terminal are already installed, A heat medium having an appropriate temperature can be supplied to the heat consumption terminal.

Another characteristic configuration of the heat medium heating system according to the present invention is that the first heating device consumes a large amount of heat at the heat consumption terminal at another target temperature lower than the predetermined target temperature. Whether or not it is the season is determined based on the temperature information acquired by the outside temperature correlation information acquiring means for acquiring temperature information having a correlation with the outside temperature, or the current month and day on the calendar having determination means;
The flow rate adjusting mechanism switches all of the heat medium for heat consumption to the bypass while the season determination means determines that the heat consumption amount at the heat consumption terminal at the different target temperature is not the season. The point is to adjust the state of flowing through the channel.

In a year, there are seasons when the heat consumption at the heat consumption terminal at another target temperature lower than a predetermined target temperature increases and when it decreases. For example, the heat consumption terminal includes a floor heating device, a bathroom heater/dryer, a desiccant air conditioner, etc., as described above. The target temperature of the heat medium is set relatively low (for example, 40 ° C.) and is operated almost all year round. is set high (for example, 80° C.).
Therefore, in this characteristic configuration, the flow rate adjustment mechanism is controlled by the season determination means in a season (for example, winter) when the heat consumption at the heat consumption terminal at a different target temperature lower than a predetermined target temperature increases. While it is determined that there is no heat, the heat medium for heat consumption is all adjusted to flow through the bypass flow path. That is, in a season when a large amount of heat is not required at a heat consumption terminal having a different target temperature lower than a predetermined target temperature, the heating of the heat medium for heat consumption supplied to the heat consumption terminal is 2 only by the second heating section of the heating device.
Furthermore, according to the above characteristic configuration, the season determination means determines that the heat consumption amount at the heat consumption terminal at a different target temperature lower than a predetermined target temperature is It is possible to appropriately determine whether it is the season when the heat consumption amount at the heat consumption terminal is large or the season when the heat consumption amount at the heat consumption terminal is small.
In addition, the season determination means determines whether or not it is a low temperature season in which heat consumption occurs at a heat consumption terminal at a predetermined target temperature, which is relatively low, based on the current month and day on the calendar. can be judged appropriately.
Furthermore, according to the above characteristic configuration, the season determining means is the season when the heat consumption amount at the heat consumption terminal at another target temperature lower than the predetermined target temperature increases based on the temperature information. It can be appropriately determined whether it is the season when the heat consumption of the heat consuming terminal is small.
Also, the season determination means can appropriately determine whether or not it is a low temperature season in which heat consumption occurs at a heat consumption terminal having a relatively low predetermined target temperature, based on the temperature information.

Still another characteristic configuration of the heat medium heating system according to the present invention is that the heat consuming heat medium circuit includes a heat consuming terminal having a relatively low target temperature and a heat consuming terminal having a relatively high target temperature. configured to be able to supply the heat medium for heat consumption to both heat consumption terminals,
The first heating device has season determining means for determining whether or not the predetermined target temperature is a low temperature season in which heat consumption at a heat consuming terminal is relatively low, and
The first heating device adjusts the temperature of the first heat medium supplied to the first heating unit to a relatively high target temperature or higher within an adjustable range,
The flow rate adjusting mechanism determines that the temperature of the heat medium for heat consumption on the downstream side of the confluence measured by the second temperature measuring means increases while the season determining means determines that the temperature is low A flow rate of the heat medium for heat consumption flowing through the first heating unit and a flow rate of the heat medium for heat consumption flowing through the bypass flow path so as to achieve the relatively low target temperature and the temperature of the heat medium for heat consumption on the downstream side of the junction measured by the second temperature measuring means is relatively the flow rate of the heat medium for heat consumption flowing through the first heating unit and the flow rate of the heat medium for heat consumption flowing through the bypass passage so that the target temperature is relatively high The point is to adjust the

During the year, there is a low temperature season in which heat consumption occurs at a heat consumption terminal having a relatively low predetermined target temperature. For example, the heat consumption terminal includes a floor heating device, a bathroom heater/dryer, a desiccant air conditioner, etc., as described above. The target temperature of the heat medium is set relatively low (for example, 40 ° C.) and is operated almost all year round. is set high (for example, 80° C.).
Therefore, in this characteristic configuration, the temperature of the heat medium for heat consumption on the downstream side of the confluence measured by the second temperature measuring means is The flow rate of the heat medium for heat consumption flowing through the first heating unit and the flow rate of the heat medium for heat consumption flowing through the bypass flow path are adjusted so that the temperature reaches a relatively low target temperature. , the temperature of the heat medium for heat consumption on the downstream side of the junction measured by the second temperature measuring means reaches a relatively high target temperature while the season determining means determines that it is not the low temperature season. The flow rate of the heat medium for heat consumption flowing through the first heating unit and the flow rate of the heat medium for heat consumption flowing through the bypass channel are adjusted so that In other words, during the low temperature season, the heat medium for heat consumption is heated (superheated) to a relatively high target temperature by the first heat medium adjusted to a relatively high target temperature or higher. can be prevented.

Still another characteristic configuration of the heat medium heating system according to the present invention is that the first heating device is in a state where a user causes the heat medium for heat consumption to flow through the first heating unit, or bypass switching input means capable of inputting whether to switch to a state in which all the heat medium for heating is flowed through the bypass flow path;
A state in which the flow rate adjustment mechanism allows the heat medium for heat consumption to flow through the first heating unit, prioritizing the user input performed by the bypass switching input means over the judgment result of the season judgment means. Alternatively, it is switched to a state in which all of the heat medium for heat consumption is made to flow through the bypass passage.

For example, if the heat consumption terminal is a bathroom heater/dryer (operating mode for drying the bathroom itself or clothes) or a desiccant air conditioner, the heat consumption increases regardless of the season. Therefore, even in summer, there are cases where it is preferable to heat the heat medium for heat consumption by both the first heating unit of the first heating device and the second heating unit of the second heating device.
Therefore, in this characteristic configuration, the first heating device is in a state where the user causes the heat medium for heat consumption to flow through the first heating unit, or in a state where all the heat medium for heat consumption flows through the bypass flow path. It has bypass switching input means capable of inputting whether to switch to . Then, the flow rate adjusting mechanism gives priority to the user input performed by the bypass switching input means over the judgment result of the season judgment means, and flows the heat medium for heat consumption through the first heating unit, or The state is switched to a state in which all of the heat medium for heat consumption is made to flow through the bypass channel. As a result, the heat medium for heat consumption supplied to the heat consumption terminal can be heated by both the first heating unit of the first heating device and the second heating unit of the second heating device. It is possible to switch between a state that can be performed only by the second heating unit of the heating device.

It is a figure which shows the structure of the heat-medium heating system of a reference form. 1 is a diagram showing the configuration of a heating medium heating system according to a first embodiment; FIG. FIG. 4 is a diagram showing the configuration of a heat medium heating system of second and third embodiments; It is a figure which shows the structure of the heat-medium heating system of 4th Embodiment. It is a figure which shows the structure of the heat-medium heating system of 5th Embodiment .

< Reference form>
A heating medium heating system according to a reference embodiment will be described below with reference to the drawings.
FIG. 1 is a diagram showing the configuration of a heating medium heating system of a reference embodiment. As illustrated, the heat medium heating system is a system for heating the heat medium for heat consumption supplied to the heat consumption terminal 10, and the heat medium for heat consumption supplied to the heat consumption terminal 10 at a predetermined target temperature. A heat-consuming heat medium circulation path L1 through which the heat medium circulates, and a first heat-consuming heat medium circulation path L1 that can heat the heat-consuming heat medium after the heat is used in the heat-consuming terminal 10 in the middle of the heat-consuming heat medium circulation path L1. A heating device 20 and a second heating device 40 capable of heating a heat consuming heat medium on the downstream side closer to the heat consuming terminal 10 than the first heating device 20 in the middle of the heat consuming heat medium circulation path L1. .

The heat consumption terminal 10 is a device that utilizes the heat possessed by the heat medium for heat consumption, and includes at least one or more of a floor heating device, a bathroom heater/dryer, and a desiccant air conditioner. A floor heating device is a device that warms a material such as a floor by heat radiated from a heat medium for heat consumption. A bathroom heater/dryer is a device that heats and dries a bathroom by heating the air in the bathroom with the heat released from the heat medium for heat consumption. A desiccant air conditioner is a device that dehumidifies or humidifies a space to be air-conditioned using a desiccant element, and uses heat released from a heat medium for heat consumption when heating air supplied to the desiccant element. For example, by desorbing the moisture from the desiccant element using the air heated by the heat emitted from the heat medium for heat consumption, the dry desiccant element and the desorbed moisture-containing air can be obtained. . Then, by using the dry desiccant element to adsorb moisture in the air supplied to the air-conditioned space, the air-conditioned space can be dehumidified. Alternatively, by supplying air containing desorbed moisture to the air-conditioned space, the air-conditioned space can be humidified.

The first heating device 20 includes a first heat source H that generates heat, a first heat medium whose temperature is raised by heat supplied from the first heat source H, and heat through a heat-consuming heat medium circulation path L1. It has a first heating unit 21 that performs heat exchange with the heat medium for heat consumption flowing from the consumption terminal 10 . In addition, the first heating appliance 20 has a first controller C1 that controls its own operation. In this reference embodiment, the first heating device 20 is provided with a heat-consuming heat medium first flow path L2 connected to the heat-consuming heat medium circulation path L1. This heat-consuming heat medium first flow path L2 allows the heat-consuming heat medium supplied to the inflow part 33 of the first heating device 20 via the heat-consuming heat medium circulation path L1 to flow from the outflow part 34 to heat. It is a flow path through which the heat medium flows until it flows out to the consumption heat medium circulation path L1.

The first heating device 20 includes at least one of a cogeneration device, a heat pump device, and a solar water heater. In the case of this reference embodiment, the first heat source section H of the first heating device 20 is configured to include at least one of a cogeneration device, a heat pump device, and a solar water heating device. For example, a cogeneration system is a system that generates both heat and electricity. For example, a cogeneration system includes a fuel cell and uses electricity and heat generated by the fuel cell, or an engine and a generator driven by the engine. , a device that utilizes the power generated by the generator and the heat that is discharged from the engine.

The second heating device 40 includes a second heating unit 41 capable of heating a heat medium for heat consumption, and a first temperature measuring means for measuring the temperature of the heat medium for heat consumption on the downstream side of the second heating unit 41. and a temperature sensor T1. In addition, the second heating device 40 has a second controller C2 that controls its own operation. The measurement result of the temperature sensor T1 is transmitted to the second controller C2.

In this reference embodiment, the second heating device 40 is provided with a heat-consuming heat medium second flow path L3 connected to the heat-consuming heat medium circulation path L1. The heat-consuming heat medium second flow path L3 allows the heat-consuming heat medium supplied to the inflow part 42 of the second heating device 40 via the heat-consuming heat medium circulation path L1 to flow through the second heating part 41. It is a flow path through which the heat flows from the outflow portion 43 to the heat medium circulation path L1 for heat consumption. In addition, a pump P3 is provided in the middle of the heat-consuming heat medium second flow path L3. The flow of the heat medium for heat consumption is performed in the second heat medium flow path L3. The operation of the pump P3 is controlled by the second controller C2.

The second heating device 40 includes at least one of a combustion hot water heater and an electric heater. A combustion hot water heater is a device that uses the heat generated when fuel such as gas is burned to heat hot water or a heat medium. An electric heater is a device that uses Joule heat generated by energization to heat hot water or a heat medium. In the case of this reference embodiment, the second heating unit of the second heating device 40 is configured to be able to heat the heat medium for heat consumption with heat obtained from a combustion hot water heater, an electric heater, or the like.

In this reference embodiment, the first heating device 20 adjusts the temperature of the first heat medium supplied to the first heating unit 21 to the target temperature within an adjustable range. Specifically, the first control unit C1 of the first heating device 20 controls the temperature of the hot water measured by the temperature sensor T4, that is, the temperature of the hot water (first heat medium) supplied to the first heating unit 21 to The operation of pump P2 is controlled so that the target temperature is reached within an adjustable range.
First, the case where hot water (first heat medium) can be adjusted to the target temperature will be described below.
In this case, the first heating device 20 includes a hot water circulation path 25 (first heat medium circulation path) in which hot water as the first heat medium circulates between the first heat source section H and the first heating section 21, A pump P2 is provided as circulation means for circulating hot water in the circulation path 25, and the operation of the pump P2 is controlled so that the temperature of the hot water (first heat medium) supplied to the first heating unit 21 reaches a target temperature. is configured to This target temperature is the target temperature when supplying the heat medium for heat consumption from the second heating device 40 to the heat consumption terminal 10 . For example, the target temperature is set for each heat consumption terminal 10, and is predetermined to a value such as 40° C. for a floor heating system, 80° C. for a bathroom heater/dryer, and 80° C. for a desiccant air conditioner. It is For example, when the first heating device 20 is installed, if the installer or the like stores information about the target temperature in advance in a memory (not shown) mounted on the first heating device 20, the first The control unit C1 can read and use the information.

In the first heating unit 21, heat is exchanged between the hot water (first heat medium) flowing through the hot water circulation path 25 and the heat consuming heat medium flowing through the heat consuming heat medium first flow path L2. As a result, the hot water raises the temperature of the heat medium for heat consumption. The heat medium for heat consumption whose temperature has been raised by the first heating section 21 is supplied from the outflow section 34 to the heat medium for heat consumption circulation path L<b>1 and then reaches the second heating device 40 .

The second heating device 40 performs a heating operation so that the temperature of the heat medium for heat consumption measured by the temperature sensor T1 reaches the target temperature when the heat consumption terminal 10 is operated. For example, when a command to start operation of the heat consumption terminal 10 is issued by a remote controller (not shown) or the like, the command is transmitted to the second controller C2 of the second heating device 40 . Then, the second control unit C2 operates the pump P3 of the second heating device 40 to start the flow of the heat medium for heat consumption. In addition, in the same way as described above, information about this target temperature is stored in advance in a memory (not shown) or the like mounted on the second heating device 40, and the second control unit C2 is read and used.
Therefore, the second control unit C2 can set the target temperature according to each heat consumption terminal 10 instructed to start operation. In the present embodiment, the second control unit C2 controls the second heating unit so that the temperature of the heat medium for heat consumption measured by the temperature sensor T1 reaches the target temperature when the heat consumption terminal 10 is operated. 41 is heat activated.
Although illustration is omitted, a heat consuming heat medium outflow portion 43 that supplies the heat consuming heat medium to the heat consuming terminal 10 having a relatively high predetermined target temperature; The outflow part 43 of the heat medium for heat consumption that supplies the heat medium for heat consumption to the heat consumption terminal 10 having a relatively low target temperature is divided into two parts. The heat medium for heat consumption heated in 41 is supplied as it is, and the heat medium for heat consumption after heating of the second heating section 41 and before heating is mixed and supplied to the latter outflow section 43, thereby achieving two targets. temperature can be accommodated at the same time. Specifically, for example, to the heat consuming terminal 10 having a relatively high target temperature, the heat consuming heat medium is supplied from the pump P3, the heat consuming heat medium second flow path L3, the second heating section 41, The heat medium second flow path L3 for heat consumption, the temperature sensor T1, the outflow portion 43 on one side, and the heat medium circulation path L1 for heat consumption are supplied in this order. To the heat consuming terminal 10 with a relatively low target temperature, the heat consuming heat medium is the pump P3, the heat consuming heat medium second flow path L3, the second heating section 41, the heat consuming heat medium The second flow path L3, temperature sensor T1, outflow portion 43 on the other side, and heat-consuming heat medium circulation path L1 are supplied in this order. Part of the flowing heat medium for heat consumption is supplied to the temperature sensor T1 side via the heating unit 41, and the other part of the heat medium for heat consumption is supplied to the temperature sensor T1 side without the heating unit 41. is configured as As a result, even when the heat consumption terminals 10 have a relatively low target temperature and the heat consumption terminals 10 have a relatively high target temperature, the heat medium for heat consumption can be (2) The heat consumption terminal 10 can be appropriately heated to the target temperature corresponding to the heat consumption terminal 10 in the heating device 40 and supplied.

As described above, the second heating device 40 performs the heating operation so that the temperature of the heat medium for heat consumption after heating measured by the temperature sensor T1 as the first temperature measuring means reaches the target temperature. That is, the second heating device 40 determines by itself whether or not it is necessary to heat the heat medium for heat consumption by the second heating unit 41 , and heats the heat consumption terminal 10 to the target temperature of the heat for heat consumption. operable to supply a medium.
In addition, in the first heating device 20, in the first heating unit 21, the hot water (first heat medium) adjusted to the target temperature by the heat supplied from the first heat source unit H and the heat medium circulation path for heat consumption L1 Heat is exchanged with the heat medium for heat consumption flowing from the heat consumption terminal 10 through the . That is, in the first heating unit 21, the heat medium for heat consumption exchanges heat with the hot water at the target temperature, so the temperature of the heat medium for heat consumption after the heat exchange becomes a temperature close to the target temperature. As a result, the heat medium for heat consumption having a temperature close to the target temperature is supplied from the first heating device 20 to the second heating device 40 through the heat medium circuit for heat consumption L1, and the second heating is performed as described above. Heating of the heat medium for heat consumption is performed in the equipment 40 as needed.
Next, a case where hot water (first heat medium) cannot be adjusted to the target temperature will be described. For example, even if the target temperature is 80° C., the temperature of the first heat source H and the lower limit of the output of the pump P2 are restrictions, and the hot water (second 1 heating medium) cannot be raised to 80°C. In this case, in the first heating unit 21, the heat medium for heat consumption exchanges heat with hot water (first heat medium) whose temperature does not reach the target temperature. temperature not reached. As a result, the heat medium for heat consumption whose temperature does not reach the target temperature is supplied from the first heating device 20 to the second heating device 40 through the heat medium circuit for heat consumption L1. The heating device 40 heats the heat medium for heat consumption to the target temperature.
Therefore, even if the first heating device 20 and the second heating device 40 cannot mutually know what kind of heat medium heating control is being performed, the heat medium at an appropriate temperature for the heat consumption terminal 10 can be detected. can supply Further, for example, in a place where the second heating device 40 and the heat consumption terminal 10 are already installed, the first heating device 20 that cannot exchange information with the second heating device 40 can be additionally installed. Even if it becomes, the heat medium of suitable temperature can be supplied with respect to the heat consumption terminal 10. FIG.

< First Embodiment>
The heating medium heating system of the first embodiment differs from the reference embodiment in the method of controlling the temperature of the heat medium for heat consumption supplied to the heat consuming terminal 10 . The heating medium heating system of the first embodiment will be described below, but the description of the same configuration as that of the reference embodiment will be omitted.

FIG. 2 is a diagram showing the configuration of the heat medium heating system of the first embodiment.
In the present embodiment, the first heating device 20 includes a first heat source H that generates heat, hot water (first heat medium) heated by the heat supplied from the first heat source H, and The first heating unit 21 that exchanges heat with the heat medium for heat consumption flowing from the heat consumption terminal 10 through the heat medium circulation path L1, and the heat medium circulation path for heat consumption L1 from the heat consumption terminal 10 A bypass passage 35 that allows the flowing heat medium for heat consumption to bypass the first heating unit 21 and flow to the second heating device 40, and a heat medium for heat consumption that flows via the first heating unit 21. A flow rate adjustment mechanism 36 that can adjust the flow rate and the flow rate of the heat medium for heat consumption flowing through the bypass flow path 35, and the heat medium for heat consumption that flowed through the first heating unit 21 and the bypass flow path 35. and a temperature sensor T2 as a second temperature measuring means for measuring the temperature of the heat medium for heat consumption downstream of the confluence portion 30 where the heat medium for heat consumption flows through. The measurement result of the temperature sensor T2 is transmitted to the first controller C1.

In this embodiment, the flow rate adjusting mechanism 36 is provided at the confluence portion 30 where the heat medium for heat consumption that has flowed through the first heating section 21 and the heat medium for heat consumption that has flowed through the bypass flow path 35 join. It is configured using a mixed valve etc.

Then, the first heating device 20 adjusts the temperature of the first heat medium supplied to the first heating unit 21 to the target temperature or higher within an adjustable range. Specifically, the first control unit C1 of the first heating device 20 controls the operation of the pump P2 to control the temperature of the hot water measured by the temperature sensor T4, that is, the hot water supplied to the first heating unit 21 ( The temperature of the first heat medium) is adjusted to a target temperature or higher within an adjustable range.
First, the case where the temperature of hot water (first heat medium) can be adjusted to a target temperature or higher will be described below. In this case, for example, if the target temperature is 40°C, the first control unit C1 may control the operation of the pump P2 to adjust the temperature of hot water measured by the temperature sensor T4 to 70°C. . In addition, the first control part C1 causes the temperature of the heat medium for heat consumption downstream of the confluence part 30 measured by the temperature sensor T2 to reach the target temperature. The flow rate adjustment mechanism 36 adjusts the flow rate of the heat medium for heat consumption and the flow rate of the heat medium for heat consumption flowing through the bypass passage 35 . For example, the first control unit C1 continuously acquires and monitors the measurement result of the temperature sensor T2, and controls the operation of the flow control mechanism 36 so that the temperature measured by the temperature sensor T2 becomes the target temperature. , the amount of relatively high-temperature heat-consuming heat medium that has flowed through the first heating unit 21 and the amount of relatively low-temperature heat-consuming heat medium that has flowed through the bypass flow path 35 are calculated as follows: Adjust.

As in the reference embodiment, the second heating device 40 performs a heating operation so that the temperature of the heat-consuming heat medium measured by the temperature sensor T1 reaches the target temperature when the heat-consuming terminal 10 is in operation.

As described above, the second heating device 40 serves as the first temperature measuring means for measuring the temperature of the heat-consuming heat medium downstream of the second heating unit 41 capable of heating the supplied heat-consuming heat medium. of temperature sensors T1. Then, the second heating device 40 performs a heating operation so that the temperature of the heat medium for heat consumption after heating measured by the temperature sensor T1 reaches the target temperature. That is, the second heating device 40 determines by itself whether or not it is necessary to heat the heat medium for heat consumption by the second heating unit 41 , and heats the heat consumption terminal 10 to the target temperature of the heat for heat consumption. operable to supply a medium.

In addition, in the first heating device 20, in the first heating unit 21, the hot water (first heat medium) adjusted to a target temperature or higher by the heat supplied from the first heat source unit H and the heat medium circulation path for heat consumption Heat is exchanged with the heat medium for heat consumption flowing from the heat consumption terminal 10 through L1. That is, in the first heating unit 21, the heat medium for heat consumption exchanges heat with hot water having a target temperature or higher, so the temperature of the heat medium for heat consumption after the heat exchange is close to the target temperature or higher than the target temperature. .
Furthermore, since the first heating device 20 has the bypass channel 35 that allows the heat medium for heat consumption to bypass the first heating unit 21, the heat medium flows through the first heating unit 21. The heat medium for heat consumption can be set to a temperature close to the target temperature or higher than the target temperature, and the heat medium for heat consumption that has flowed through the bypass flow path 35 can be prevented from being heated by the first heating unit 21. . Then, by the flow rate adjusting mechanism 36, the temperature of the heat medium for heat consumption on the downstream side of the merging portion 30 measured by the temperature sensor T2 as the second temperature measuring means is adjusted to the target temperature. and the flow rate of the heat consuming heat medium flowing through the bypass passage 35 are adjusted. As a result, the heat medium for heat consumption at the adjusted temperature is supplied from the first heating device 20 to the second heating device 40 through the heat medium circuit for heat consumption L1, and the second heating device At 40, heating of the heat medium for heat consumption is performed as required.
Next, a case where hot water (first heat medium) cannot be adjusted to a target temperature or higher will be described. For example, even if the target temperature is 80° C., the temperature of the first heat source H and the lower limit of the output of the pump P2 are restrictions, and the hot water (second 1 heating medium) cannot be raised to 80°C. In this case, in the first heating unit 21, the heat medium for heat consumption exchanges heat with hot water (first heat medium) whose temperature does not reach the target temperature. not reached. All of the heat medium for heat consumption flows through the first heating section 21 by the flow rate adjustment mechanism 36, but the heat medium for heat consumption downstream of the confluence section 30 measured by the temperature sensor T2 as the second temperature measuring means is The temperature of the heat medium also does not reach the target temperature. As a result, the heat medium for heat consumption whose temperature does not reach the target temperature is supplied from the first heating device 20 to the second heating device 40 through the heat medium circuit for heat consumption L1. The heating device 40 heats the heat medium for heat consumption to the target temperature.
Therefore, even if the first heating device 20 and the second heating device 40 cannot mutually know what kind of heat medium heating control is being performed, the heat medium at an appropriate temperature for the heat consumption terminal 10 can be detected. can supply

< Second embodiment>
The heating medium heating system of the second embodiment differs from that of the first embodiment in the operation of the flow control mechanism 36 . The heating medium heating system of the second embodiment will be described below, but the description of the same configurations as those of the reference embodiment and the first embodiment will be omitted.

FIG. 3 is a diagram showing the configuration of the heat medium heating system of the second embodiment.
In a year, there are seasons when the heat consumption at the heat consumption terminal 10 at another target temperature lower than a predetermined target temperature increases and when it decreases. For example, the heat consumption terminal 10 includes a floor heating device, a bathroom heater/dryer, and a desiccant air conditioner as described above. Among them, the target temperature of the heat medium for heat consumption to be supplied is set relatively low (for example, 40° C.) for the floor heating apparatus which is operated for the purpose of heating in winter. On the other hand, for bathroom heater/dryers and desiccant air conditioners that are operated almost all year round, the target temperature of the supplied heat medium for heat consumption is set relatively high (for example, 80° C.).

Therefore, in the present embodiment, the first heating device 20 determines whether or not it is the season when the heat consumption of the heat consumption terminal 10 at another target temperature lower than a predetermined target temperature is large. It has a season determination means 38 for determining the season. Specifically, the season determining means 38 determines that the heat consumption at the heat consumption terminal 10 at a different target temperature lower than a predetermined target temperature increases based on the current month and day on the calendar. Determine whether it is in season. For example, if the current month and day on the calendar are January to April and October to December, the season determining means 38 determines the season in which the heat consumption at the heat consumption terminal 10 such as the floor heating device increases. If the current month and day on the calendar is from May to September, it is determined that it is not the season in which the heat consumption of the heat consumption terminal 10 such as the floor heating system is large.

Then, the determination result of the season determination means 38 is transmitted to the first control section C1, and the first control section C1 determines that the flow rate adjustment mechanism 36 is at a temperature lower than a predetermined target temperature by the season determination means 38. While it is determined that it is not the season in which the amount of heat consumption at the heat consumption terminal 10 at the target temperature of is not the season, the heat medium for heat consumption is adjusted to flow through the bypass flow path 35. . That is, in that season, the heat medium for heat consumption supplied to the heat consumption terminal 10 is heated only by the second heating section 41 of the second heating device 40 .
On the other hand, the first control unit C1 determines by the season determination means 38 that it is the season when the heat consumption amount at the heat consumption terminal 10 at another target temperature lower than the predetermined target temperature increases. During this period, the same control as in the first embodiment is performed, that is, the first heating is performed so that the temperature of the heat medium for heat consumption on the downstream side of the merging section 30 measured by the temperature sensor T2 reaches the target temperature. The flow rate adjusting mechanism 36 adjusts the flow rate of the heat medium for heat consumption flowing through the portion 21 and the flow rate of the heat medium for heat consumption flowing through the bypass passage 35 .

< Third Embodiment>
The heating medium heating system of the third embodiment differs from that of the second embodiment in the operation of the flow rate adjusting mechanism 36 and the operation of the season determining means 38 . The heating medium heating system of the third embodiment will be described below, but the description of the same configurations as those of the reference embodiment and the first and second embodiments will be omitted.

FIG. 3 is a diagram showing the configuration of the heat medium heating system of the third embodiment.
During the year, there is a low temperature season in which the heat consumption at the heat consumption terminal 10 occurs at a relatively low predetermined target temperature. For example, the heat consumption terminal 10 includes a floor heating device, a bathroom heater/dryer, and a desiccant air conditioner as described above. Among them, the target temperature of the heat medium for heat consumption to be supplied is set relatively low (for example, 40° C.) for the floor heating apparatus which is operated for the purpose of heating in winter. On the other hand, for bathroom heater/dryers and desiccant air conditioners that are operated almost all year round, the target temperature of the supplied heat medium for heat consumption is set relatively high (for example, 80° C.).

Therefore, in the present embodiment, the first heating device 20 uses a low-temperature temperature sensor that determines whether or not it is a low-temperature season in which heat consumption at the heat-consuming terminal 10 occurs at a relatively low predetermined target temperature. It has season determination means 38 (an example of season determination means). In addition, in FIG. 3 , it is simply referred to as the season determining means 38 . Specifically, the low-temperature season determining means 38 determines whether the heat consumption terminal 10 is at a target temperature relatively lower than a predetermined relatively high target temperature, based on the current month and day on the calendar. It is determined whether or not it is a low temperature season in which heat consumption occurs at . For example, the low-temperature season determination means 38 determines that if the current month and day on the calendar are January to April and October to December, the heat consumption amount at the heat consumption terminal 10 such as the floor heating device is generated. It is determined that it is a low temperature season, and if the current month and day on the calendar is from May to September, it is determined that it is not a low temperature season in which the heat consumption amount at the heat consumption terminal 10 such as the floor heating device occurs. .

Then, the determination result of the low temperature season determination means 38 is transmitted to the first control unit C1, and the first control unit C1 controls the flow rate adjustment mechanism 36 while the low temperature season determination means 38 determines that it is the low temperature season. Heat for heat consumption flows through the first heating section 21 so that the temperature of the heat medium for heat consumption on the downstream side of the confluence section 30 measured by the temperature sensor T2 reaches a certain relatively low target temperature. It operates so as to adjust the flow rate of the medium and the flow rate of the heat medium for heat consumption flowing through the bypass channel 35 .
In addition, while the flow rate adjustment mechanism 36 is determined not to be in the low temperature season by the low temperature season determination means 38, the first control unit C1 controls the heat consumption on the downstream side of the merging portion 30 measured by the temperature sensor T2. The flow rate of the heat medium for heat consumption flowing through the first heating unit 21 and the heat medium for heat consumption flowing through the bypass channel 35 are adjusted so that the temperature of the heat medium reaches a relatively high target temperature. and operate to regulate the flow rate of
Furthermore, the first control unit C1 controls the temperature of the hot water measured by the temperature sensor T4, that is, the temperature of the first heat medium supplied to the first heating unit 21 by the first heating device 20, relative to the temperature within an adjustable range. The operation of pump P2 is controlled to regulate above a certain target temperature which is higher than .
Thereby, while it is determined that it is the low temperature season, the heat medium for heat consumption is heated (superheated) to a relatively high target temperature by the first heat medium adjusted to a relatively high target temperature or higher. can be prevented.

< Fourth Embodiment>
The heating medium heating system of the fourth embodiment differs from the above second and third embodiments in the operation of the flow control mechanism 36 . The heating medium heating system of the fourth embodiment will be described below, but descriptions of the same configurations as those of the reference embodiment and the first to third embodiments will be omitted.

FIG. 4 is a diagram showing the configuration of a heating medium heating system according to the fourth embodiment.
For example, if the heat consumption terminal 10 is the above-described bathroom heater/dryer (operating mode for drying the bathroom itself or clothes) or a desiccant air conditioner, its heat consumption increases regardless of the season. Therefore, there are cases where it is preferable to heat the heat medium for heat consumption by both the first heating unit 21 of the first heating device 20 and the second heating unit 41 of the second heating device 40 even in summer.

In the present embodiment, the first heating device 20 is configured such that the user flows the heat medium for heat consumption through the first heating unit 21 or all the heat medium for heat consumption through the bypass channel 35 . It has a bypass switching input means 39 capable of inputting whether to switch to the flowing state. The bypass switching input means 39 can be implemented using a switch or the like that can be manually operated by the user. The first heating device 20 also has the season determining means 38 described in the second embodiment or the low temperature season determining means 38 described in the third embodiment.

Then, the determination result of the season determining means 38 or the low temperature season determining means 38 and the input result of the user to the bypass switching input means 39 are transmitted to the first control unit C1 of the first heating device 20, and the first control unit C1 The flow rate adjustment mechanism 36 gives priority to the user input performed by the bypass switching input means 39 over the determination result of the season determination means 38 or the low temperature season determination means 38, and the heat medium for heat consumption is switched to the first heating unit 21. The operation is performed so as to switch to a state in which all of the heat medium for heat consumption is flowed through the bypass flow path 35 . As a result, the heat medium for heat consumption supplied to the heat consumption terminal can be heated by both the first heating unit 21 of the first heating device 20 and the second heating unit 41 of the second heating device 40. , and a state that can be performed only by the second heating unit 41 of the second heating device 40 can be switched.
In addition, when the user does not perform any input using the bypass switching input means 39, that is, switching to the state of flowing the heat medium for heat consumption through the first heating unit 21 and the heat for heat consumption When neither switching to a state in which all the medium flows through the bypass flow path 35 is input, the first control unit C1 performs control according to the determination result of the season determining means 38 or the low temperature season determining means 38. conduct.

< Fifth Embodiment>
The heating medium heating system of the fifth embodiment differs from those of the second to fourth embodiments in the operation of the season determination means 38 . The heating medium heating system of the fifth embodiment will be described below, but descriptions of the same configurations as those of the reference embodiment and the first to fourth embodiments will be omitted.

FIG. 5 is a diagram showing the configuration of the heating medium heating system of the fifth embodiment, which is a modified example of the first to fourth embodiments.
In this embodiment, the first heating device 20 further has an outside air temperature correlation information acquiring means 1 for acquiring temperature information having a correlation with the outside air temperature. Then, based on the temperature information acquired by the outside air temperature correlation information acquisition means 1, the season determination means 38 of the first heating appliance 20 controls the temperature of the heat consumption terminal at another target temperature lower than a predetermined target temperature. It is determined whether or not it is the season (for example, winter) in which the amount of heat consumption at 10 is large. For example, when the outside air temperature correlation information acquisition means 1 acquires temperature information (air temperature, gas temperature, water temperature, etc.) inside or outside the first heating device 20, the season determination means 38 determines that the outside air temperature correlation information acquisition means 1 If the outside air temperature estimated based on the obtained temperature information is, for example, 15° C. or lower, the season when the heat consumption amount at the heat consumption terminal 10 at another target temperature lower than the predetermined target temperature increases. If the estimated outside air temperature is higher than, for example, 15° C., it is not the season in which the heat consumption at the heat consumption terminal 10 at another target temperature lower than the predetermined target temperature becomes large. It performs an operation such as judging.

Then, the determination result of the season determination means 38 is transmitted to the first control unit C1, and the first control unit C1 determines that the flow rate adjustment mechanism 36 is controlled by the season determination means 38, for example, a floor heating system or the like. While it is determined that it is not the season in which the amount of heat consumption at the heat consumption terminal 10 at another target temperature lower than the target temperature is large, the heat medium for heat consumption is all made to flow through the bypass flow path 35. Act to adjust. On the other hand, the first control unit C1 determines that the heat consumption of the heat consumption terminal 10 having a different target temperature lower than a predetermined target temperature, such as a floor heating system, is large by the season determination means 38. While it is determined that the season is , the flow rate adjusting mechanism 36 adjusts the flow rate of the heat medium for heat consumption flowing through the first heating unit 21 and the flow rate of the heat medium for heat consumption flowing through the bypass channel 35 .

Further, in the present embodiment, the first heating device 20 may have a low-temperature season determining means 38 (an example of a season determining means) as the season determining means 38 . In addition, in FIG. 5 , it is simply described as the season determining means 38 . Based on the temperature information acquired by the outside air temperature correlation information acquiring means 1, the low temperature season determination means 38 determines the low temperature season in which the heat consumption amount at the heat consumption terminal 10 at a predetermined target temperature is relatively low. It is determined whether or not. For example, when the outside air temperature correlation information acquisition means 1 acquires temperature information (air temperature, gas temperature, water temperature, etc.) inside or outside the first heating device 20, the low temperature season determination means 38 uses the outside air temperature correlation information acquisition means 1 If the outside temperature estimated based on the obtained temperature information is, for example, 15°C or less, it is determined that it is a low temperature season, and if the estimated outside temperature is higher than, for example, 15°C, it is determined that it is not a low temperature season. Such an operation is performed.
Then, the determination result of the low temperature season determination means 38 is transmitted to the first control unit C1, and the first control unit C1 controls the flow rate adjustment mechanism 36 while the low temperature season determination means 38 determines that it is the low temperature season. Heat for heat consumption flows through the first heating section 21 so that the temperature of the heat medium for heat consumption on the downstream side of the confluence section 30 measured by the temperature sensor T2 reaches a certain relatively low target temperature. It operates so as to adjust the flow rate of the medium and the flow rate of the heat medium for heat consumption flowing through the bypass channel 35 .
In addition, while the flow rate adjustment mechanism 36 is determined not to be in the low temperature season by the low temperature season determination means 38, the first control unit C1 controls the heat consumption on the downstream side of the merging portion 30 measured by the temperature sensor T2. The flow rate of the heat medium for heat consumption flowing through the first heating unit 21 and the heat medium for heat consumption flowing through the bypass channel 35 are adjusted so that the temperature of the heat medium reaches a relatively high target temperature. and operate to regulate the flow rate of
Furthermore, the first control unit C1 controls the temperature of the hot water measured by the temperature sensor T4, that is, the temperature of the first heat medium supplied to the first heating unit 21 by the first heating device 20, relative to the temperature within an adjustable range. The operation of pump P2 is controlled to regulate above a certain target temperature which is higher than .
Thereby, while it is determined that it is the low temperature season, the heat medium for heat consumption is heated (superheated) to a relatively high target temperature by the first heat medium adjusted to a relatively high target temperature or higher. can be prevented.

Although illustration is omitted, also in the fourth embodiment, the season determination means 38 determines a predetermined target such as a floor heating system based on the temperature information acquired by the outside air temperature correlation information acquisition means 1. It may be configured to determine whether or not it is the season when the heat consumption of the heat consumption terminal 10 at another target temperature lower than the temperature is large. Similarly, based on the temperature information acquired by the outside air temperature correlation information acquisition means 1, the low temperature period determination means 38 determines the amount of heat consumption at the heat consumption terminal 10 having a relatively low predetermined target temperature. It may be configured to determine whether or not it is a low temperature season when

<Another embodiment>
<1>
In the above embodiment, the configuration of the heating medium heating system of the present invention has been described with a specific example, but the configuration can be changed as appropriate.
For example, the configurations of the first heating device 20 and the second heating device 40 are not limited to those shown in the drawings, and can be changed as appropriate .

<2>
In the above embodiment, the target temperature of the heat consuming terminal 10 is described with specific numerical values, but these numerical values are described for the purpose of illustration and can be changed as appropriate.

<3>
The configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments unless there is a contradiction, and the configurations disclosed in this specification The embodiments are exemplifications, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the scope of the present invention.

According to the present invention, even if the first heating device and the second heating device cannot mutually know what kind of heat medium heating control is being performed, the heat medium at an appropriate temperature is supplied to the heat consumption terminal. It can be used for a heat medium heating system that can be supplied.

1 Outside temperature correlation information acquisition means 10 Heat consumption terminal 20 First heating device 21 First heating unit 25 Hot water circulation path 35 Bypass path 36 Flow rate adjustment mechanism
3 8 Season determining means 39 Bypass switching input means 40 Second heating device 41 Second heating section L1 Heat medium circulation path for heat consumption H First heat source section T1 Temperature sensor (first temperature measuring means)
T2 temperature sensor (second temperature measuring means)

Claims (5)

A heat medium heating system for heating a heat medium for heat consumption supplied to a heat consumption terminal,
a heat-consuming heat medium circulation path through which the heat-consuming heat medium supplied to the heat-consuming terminal circulates at a predetermined target temperature;
a first heating device that can heat the heat medium for heat consumption after the heat has been used at the heat consumption terminal in the middle of the heat medium circulation path for heat consumption;
a second heating device capable of heating the heat medium for heat consumption on a downstream side closer to the heat consumption terminal than the first heating device in the middle of the heat medium circulation path for heat consumption,
The first heating device includes a first heat source that generates heat, and a first heat medium whose temperature is raised by the heat supplied from the first heat source, and the heat medium circulation path for heat consumption. a first heating unit that exchanges heat with the heat consuming heat medium flowing from the heat consuming terminal; and the heat consuming heat medium flowing from the heat consuming terminal through the heat consuming heat medium circulation path. to the second heating device bypassing the first heating unit, and the flow rate of the heat-consuming heat medium flowing through the first heating unit a flow rate adjusting mechanism capable of adjusting the flow rate of the heat medium for heat consumption flowing through the first heating unit, and the heat medium for heat consumption flowing through the first heating unit and the heat flowing through the bypass flow path and a second temperature measuring means for measuring the temperature of the heat medium for heat consumption downstream of the junction with the heat medium for heat consumption, and measuring the temperature of the first heat medium supplied to the first heating section. and adjusting the temperature to be equal to or higher than the certain target temperature within an adjustable range, and the temperature of the heat medium for heat consumption on the downstream side of the merging portion measured by the second temperature measuring means becomes the certain target temperature. the flow rate of the heat medium for heat consumption flowing through the first heating unit and the flow rate of the heat medium for heat consumption flowing through the bypass channel are adjusted by the flow rate adjustment mechanism,
The second heating device includes a second heating unit capable of heating the supplied heat medium for heat consumption, and a first temperature measuring the temperature of the heat medium for heat consumption downstream of the second heating unit. and a measuring means for heating such that the temperature of the heat medium for heat consumption measured by the first temperature measuring means becomes the certain target temperature when the heat consuming terminal is in operation. Medium heating system. The first heating device correlates with the outside air temperature whether or not it is the season when the heat consumption at the heat consumption terminal at another target temperature lower than the predetermined target temperature is large. seasonal determination means for determining based on the temperature information acquired by the outside air temperature correlation information acquisition means for acquiring the temperature information, or the current month and day on the calendar ,
The flow rate adjusting mechanism switches all of the heat medium for heat consumption to the bypass while the season determination means determines that the heat consumption amount at the heat consumption terminal at the different target temperature is not the season. 2. The heat medium heating system according to claim 1, wherein the heat medium heating system is adjusted to flow through the flow path. The heat-consuming heat medium circuit can supply the heat-consuming heat medium to both the heat-consuming terminal having a relatively low target temperature and the heat-consuming terminal having a relatively high target temperature. configured to
The first heating device has season determining means for determining whether or not the predetermined target temperature is a low temperature season in which heat consumption at a heat consuming terminal is relatively low, and
The first heating device adjusts the temperature of the first heat medium supplied to the first heating unit to a relatively high target temperature or higher within an adjustable range,
The flow rate adjusting mechanism determines that the temperature of the heat medium for heat consumption on the downstream side of the confluence measured by the second temperature measuring means increases while the season determining means determines that the temperature is low A flow rate of the heat medium for heat consumption flowing through the first heating unit and a flow rate of the heat medium for heat consumption flowing through the bypass flow path so as to achieve the relatively low target temperature and the temperature of the heat medium for heat consumption on the downstream side of the junction measured by the second temperature measuring means is relatively the flow rate of the heat medium for heat consumption flowing through the first heating unit and the flow rate of the heat medium for heat consumption flowing through the bypass passage so that the target temperature is relatively high The heat medium heating system according to claim 1, wherein the . The first heating device is set in a state in which a user causes the heat medium for heat consumption to flow through the first heating unit, or a state in which all the heat medium for heat consumption flows through the bypass flow path. Having bypass switching input means for inputting whether to switch,
A state in which the flow rate adjustment mechanism allows the heat medium for heat consumption to flow through the first heating unit, prioritizing the user input performed by the bypass switching input means over the judgment result of the season judgment means. 4. The heat medium heating system according to claim 2, wherein the heat medium heating system is switched to a state in which all of the heat medium for heat consumption is caused to flow through the bypass passage. The first heating device is configured to include at least one or more of a cogeneration device, a heat pump device, and a solar water heater,
The second heating device comprises at least one or more of a combustion hot water heater and an electric heater,
5. The heat medium heating system according to any one of claims 1 to 4, wherein the heat consumption terminal includes at least one of a floor heating device, a bathroom heater/dryer, and a desiccant air conditioner .

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