JP7358705B2 - Installation structure of solar heat utilization system - Google Patents

Description

The present invention relates to an installation structure for a solar heat utilization system.

Patent Document 1 discloses a solar heating house in which a solar water heater is installed in the attic space of the house. This solar heating house heats the stored water by collecting heat from sunlight through the roof and exchanging heat with the stored water inside the solar water heater placed in the attic space. The heated stored water is then supplied into homes through water pipes and used for water heaters and floor heating systems.

Japanese Patent Application Publication No. 2014-047529

However, in the above-mentioned prior art, the solar water heater, which is a large-scale facility including a heat exchange unit, is placed in the attic space. For this reason, when installing a solar heat utilization system after the construction of a house, it is necessary to provide a large opening that communicates with the attic space, which requires large-scale construction work and is not easy to install. Therefore, there is room for improvement in this respect.

The present invention takes the above-mentioned facts into consideration and aims to provide an installation structure for a solar heat utilization system that can be easily installed even after the construction of a house.

The installation structure of the solar heat utilization system according to the first aspect is provided in a flow path for a fluid supplied indoors of a house, and is installed outdoors and exchanges heat between the fluid and a heat medium stored inside. a heat exchange unit that is tubular or pipe-shaped, has a heat collection part, is attached to an attic structural material to collect heat from the air in the attic space, and has both ends connected to the heat exchange unit. , and a heat collecting pipe in which the heat medium circulates.

In the installation structure of the solar heat utilization system according to the first aspect, the heat collecting section is attached to the attic structural material in the attic space, while the heat exchange unit is installed outdoors. In this solar heat utilization system, air in the attic space that is heated by solar heat is transferred to a heat medium flowing inside through a heat collecting section. The heated heat medium is configured to circulate inside the heat collection pipe and return to the inside of the heat exchange unit installed outside the residence. Thereby, solar heat is collected in the heat exchange unit through the heating medium. Further, in the heat exchange unit, heat is exchanged between the heated heat medium and the fluid supplied indoors in the house, thereby warming the fluid. In this way, a part of the heat collection pipe (heat collection section) is placed in the attic space, and the heat exchange unit is installed outdoors, thereby eliminating the need for installing large equipment in the attic space. As a result, when installing a solar heat utilization system after construction, such as when renovating a house, the construction work is not large-scale.

In the installation structure of the solar heat utilization system according to the second aspect, in the configuration described in the first aspect, the heat collecting parts are respectively attached to two or more rafters that support the roofing material.

In the installation structure of the solar heat utilization system according to the second aspect, the heat collecting portions of the heat collecting pipes are respectively attached to two or more rafters arranged in the attic space. Therefore, a sufficient length of the heat collecting section can be ensured, and the amount of heat supplied from the attic space increases.

In the installation structure of a solar heat utilization system according to a third aspect, in the configuration described in the first aspect or the second aspect, the heat collecting part is formed by winding the middle part of the heat collecting pipe in a loop shape. The structure has a plurality of annular parts.

In the installation structure of the solar heat utilization system according to the third aspect, the surface area of the heat collecting part is increased by forming a plurality of annular parts in the heat collecting part. This improves the efficiency of heat absorption by the heat collecting section, which in turn improves the efficiency of solar energy utilization.

As explained above, the installation structure for the solar heat utilization system according to the first aspect has the excellent effect that the solar heat utilization system can be easily installed even after the construction of the house.

The installation structure of the solar heat utilization system according to the second aspect has an excellent effect of increasing the amount of heat collected from the attic space.

The installation structure of the solar heat utilization system according to the third aspect has an excellent effect of improving the heat absorption efficiency of the heat collecting section and improving the utilization efficiency of solar thermal energy.

1 is an overall diagram schematically showing an installation structure of a solar heat utilization system according to the present embodiment. FIG. 2 is an enlarged perspective view showing an enlarged heat collecting portion of the heat collecting pipe shown in FIG. 1; FIG. 1 is a block diagram of a solar heat utilization system according to the present embodiment.

The installation structure of the solar heat utilization system 10 according to this embodiment will be described below with reference to FIGS. 1 to 3. First, FIG. 1 shows a schematic cross-sectional view of a house 12 to which a solar heat utilization system 10 is applied. Further, FIG. 3 shows a block diagram of the solar heat utilization system 10.

First, an overview of a house 12 to which the solar heat utilization system 10 is applied will be explained using FIGS. 1 and 2.

(Residential)
As shown in FIG. 1, the house 12 has a roof part 14 having a gable roof, and a ceiling part 18 that is arranged on the lower side of the building of the roof part 14 and forms the ceiling surface of the living space 16. . Further, an attic space 20 is formed in the space between the roof section 14 and the ceiling section 18.

Inside the attic space 20, a purlin 22 and a plurality of rafters 24 are arranged as attic structural members. The purlin 22 and the rafters 24 constitute a part of the roof section 14.

As shown in FIG. 2, the ridgepole 22 is a horizontal member placed on the top of the roof 14, with the longitudinal direction of the house 12 being the longitudinal direction. One longitudinal end of a plurality of rafters 24 is fixed to this purlin 22. The plurality of rafters 24 are beam members arranged with the longitudinal direction substantially perpendicular to the longitudinal direction of the ridgepole 22 in plan view, and are strung diagonally from the ridgepole 22 toward the eaves beam (not shown) of the house 12. and are arranged substantially parallel to each other along the longitudinal direction of the purlin 22.

Next, an overview of the solar heat utilization system 10 will be explained using FIGS. 1 and 3.

(Solar heat utilization system)
The solar heat utilization system 10 includes a heat collection pipe 26 that collects hot air in an attic space 20 heated by solar heat, and a heat exchange unit 28 that stores the heat collected by the heat collection pipe 26.

As shown in FIG. 1, the heat collecting pipe 26 is formed into a tube shape or a pipe shape, and both ends in the wiring direction are connected to a heat exchange unit 28 placed outside the house. Most of the heat collecting pipe 26 is housed inside the wall 30 through an opening 34 formed in an outer wall panel 32 that constitutes the wall 30 of the house 12 . Further, the heat collecting pipe 26 extends upward through the opening 34 of the building, and the middle portion in the longitudinal direction is disposed within the attic space 20. The intermediate portion serves as a heat collecting portion 36, which will be described later. Although not shown, a heat insulating material is wrapped around a portion of the heat collecting pipe 26 housed inside the wall portion 30 and a portion exposed to the outside and connected to the heat exchange unit 28.

This heat collection pipe 26 is used as a circulation path for circulating the antifreeze stored inside the heat exchange unit 28. Specifically, the antifreeze stored in the heat exchange unit 28 is sent to one end of the heat collection pipe 26 by the pump 40, and after being supplied to the inside of the heat collection pipe 26, it is returned to the inside of the heat exchange unit 28. It has become. Note that the antifreeze corresponds to the "thermal medium" in the present invention.

The heat collecting part 36 has a plurality of annular parts 36A formed by winding the heat collecting pipe 26 in a loop shape to increase its surface area. The plurality of annular portions 36A are each suspended from two or more rafters 24 via attachment members (for example, hooks 42). Thereby, the heat collecting part 36 is attached to the rafter 24 as an attic structural member. Note that, for convenience of explanation, FIGS. 1 and 2 illustrate a configuration in which the heat collecting section 36 is attached to one rafter 24 arranged in the attic space 20.

In the house 12, heat is transferred from the purlins 22 and rafters 24 warmed by solar heat, and hot air is trapped inside the attic space 20. The heat collecting section 36 having the above configuration is attached near the rafter 24 that has absorbed the sun, and collects heat from the air in the attic space 20 using the antifreeze flowing inside the heat collecting pipe 26 as a heat medium. Then, when the antifreeze liquid returns to the heat exchange unit 28 again, heat exchange is performed with other antifreeze liquid stored inside the heat exchange unit 28. In this way, by circulating the antifreeze through the heat collection pipe 26, the heat in the attic space 20 is stored in the heat exchange unit 28.

As described above, the heat exchange unit 28 is arranged outdoors as a heat storage tank that stores hot air in the attic space 20 using the antifreeze stored inside as a heat medium. This heat exchange unit 28 includes a water supply channel 46 for supplying hot water to a hot water system 44 in the house 12 and an underfloor circulation channel 54 for supplying warmed antifreeze to a floor heating system 52 in the house 12. installed in the flow path.

The water supply channel 46 includes a heat exchange channel 48 that exchanges heat with the heat exchange unit 28 described above, and a water supply channel 50 that sends hot water to the hot water system 44 in the house 12 from a hot water storage tank 49 that stores hot water. One end of the heat exchange path 48 is connected to a water supply port (not shown), and cold water is supplied into the heat exchange path 48 by opening and closing the solenoid valve 51. Further, the other end of the heat exchange path 48 is connected to a hot water storage tank 49 placed outside the house 12. The heat exchange unit 28 is provided in the middle of the heat exchange path 48, and the cold water flowing in the heat exchange path 48 is warmed by heat exchange with the antifreeze heated inside the heat exchange unit 28. As a result, hot water is supplied to the hot water storage tank 49 and stored therein. Furthermore, hot water is taken out from this hot water storage tank 49 to a water supply channel 50, and the hot water is supplied to the hot water system 44 in the house 12.

The hot water supply system 44 is equipped with an auxiliary heat source such as a boiler (not shown), heats additional hot water as needed, and supplies the hot water to the bathroom, kitchen, etc. of the residence 12.

On the other hand, the underfloor circulation path 54 constitutes a part of the floor heating system 52, is formed in a tube shape or a pipe shape, and allows the antifreeze to flow therein. As an example, the underfloor circulation path 54 is arranged inside a floor heating panel (not shown) arranged on the floor 56 of the living space 16, and extends from one end of the floor 56 of the living space 16 to the other end. They are arranged in a zigzag pattern. One end and the other end of the underfloor circulation path 54 in the wiring direction are connected to a heat exchange unit 28 , and the antifreeze supplied into the underfloor circulation path 54 by opening and closing of the solenoid valve 58 is heat exchanged using a pump 60 . It is configured to return to unit 28. In other words, the antifreeze flowing within the floor portion 56 is circulating. Further, although not shown, like the hot water supply system 44 described above, the floor heating system 52 includes an auxiliary heat source such as a boiler (not shown). Thereby, the temperature of the floor portion 56 can be adjusted by heating the antifreeze liquid as necessary.

(action/effect)
Next, the operation and effects of this embodiment will be explained.

In the installation structure of the solar heat utilization system 10 of this embodiment, the heat collecting section 36 is attached to the rafters 24 in the attic space 20, while the heat exchange unit 28 is installed outdoors. In this solar heat utilization system 10, heat is transferred from the air in the attic space 20 heated by solar heat, and the antifreeze that passes through the heat collection section 36 of the heat collection pipe 26 is heated. Further, the warmed antifreeze circulates inside the heat collection pipe 26 and returns to the inside of the heat exchange unit 28 installed outside the house 12. Thereby, solar heat is collected in the heat exchange unit 28 using the antifreeze as a heat medium.

Furthermore, in this heat exchange unit 28, heat exchange is performed between the cold water and antifreeze that are supplied indoors. Specifically, the antifreeze returning from the heat collection pipe 26 to the heat exchange unit 28 exchanges heat with the antifreeze stored in the heat exchange unit 28, and the antifreeze in the heat exchange unit 28 is warmed. Then, heat exchange is performed between this warmed antifreeze and the cold water supplied to the indoor hot water supply system 44, and hot water is obtained. On the other hand, the heated antifreeze in the heat exchange unit 28 is supplied to the indoor floor heating system 52.

According to the above-described configuration, by arranging only the heat collecting section 36 in the attic space 20, it becomes unnecessary to install large equipment such as the heat exchange unit 28 in the attic space 20. As a result, when installing the solar heat utilization system 10 after construction due to renovation of a house, etc., the construction work can be easily done without requiring large-scale construction.

Further, in this embodiment, the heat collecting portion 36 of the heat collecting pipe 26 is attached to two or more rafters 24 arranged in the attic space 20. Therefore, a sufficient length of the heat collecting portion 36 can be ensured, and the amount of heat supplied from the attic space 20 can be increased.

Moreover, in this embodiment, the surface area of the heat collecting part 36 is increased by forming a plurality of annular parts 36A in the heat collecting part 36. This improves the efficiency of solar heat absorption by the heat collecting section 36, and in turn improves the efficiency of solar energy utilization.

Further, in the present embodiment, a hot water storage tank 49 storing hot water to be supplied to the hot water supply system 44 is installed outdoors similarly to the heat exchange unit 28. Therefore, a larger living space 16 can be secured compared to a structure in which a large hot water storage tank 49 is installed inside the house. Moreover, by installing the hot water storage tank 49 outdoors, large equipment can be installed without entering the dwelling unit, making the installation work easier.

Furthermore, in this embodiment, most of the heat collecting pipe 26 is arranged inside the wall 30 of the house 12, so the heat collecting pipe 26 is less affected by temperature differences in the outside air, and the heat shielding effect is enhanced. It is being Thereby, the efficiency of solar heat transmission by the antifreeze can be improved.

[supplementary explanation]
In the above embodiment, the heat collecting section 36 is configured to be attached to the rafter 24, but the present invention is not limited to this, and the heat collecting section 36 may be attached to the purlin 22. Further, although the heat collecting portion is configured to be attached to two or more rafters 24, it may be configured to be attached to one rafter 24.

Further, in the above embodiment, the solar heat utilization system 10 includes the hot water supply system 44 and the floor heating system 52. However, the present invention is not limited to this, and may include either one of the hot water supply system 44 and the floor heating system 52. That is, the heat exchange unit 28 may be provided only in the flow path of the water supply channel 46, or the heat exchange unit 28 may be provided only in the flow path of the underfloor circulation path 54.

Further, in the floor heating system 52 of the above embodiment, the antifreeze liquid circulates through the underfloor circulation path 54, but the present invention is not limited to this, and may be applied to a hot water type underfloor heating system in which hot water circulates through the underfloor circulation path. good. In this case, one end and the other end of the underfloor circulation path in the wiring direction may be connected to the hot water storage tank 49 of the above embodiment, and hot water may be supplied from the hot water storage tank 49 into the underfloor circulation path.

10 Solar heat utilization system 12 House 20 Attic space 22 Attic structural material (purlin)
24 Attic structural materials (rafters)
26 Heat collection pipe 28 Heat exchange unit 36 Heat collection part 36A annular part 46 Water supply waterway (flow path)
54 Underfloor circulation path (flow path)

Claims (3)

a heat exchange unit that is installed in a flow path for a fluid supplied indoors of a house, and is installed outdoors and exchanges heat between the fluid and a heat medium stored inside;
a heat collecting pipe having a tubular or pipe shape , both ends of which are connected to the heat exchange unit, and in which the heat medium circulates;
The heat collecting pipe has a heat collecting part that is attached to an attic structural material constituting a beam of the roof of the house and collects heat from the air in the attic space, and the heat collecting part is configured to It has a plurality of annular parts formed by winding the middle part into a loop shape,
A plurality of mounting members are disposed on the attic structural material along an extending direction, and the plurality of annular portions are suspended from the attic structural material via the mounting members.
Installation structure of solar heat utilization system. The installation structure for a solar heat utilization system according to claim 1, wherein the attic structural material is composed of two or more rafters that support the roof material of the roof section . The attachment member is formed in a hook shape.
An installation structure for the solar heat utilization system according to claim 1 or claim 2.