JP3933264B2 - Dehumidification air conditioning system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dehumidification air-conditioning system, particularly a dehumidification air-conditioning system for dehumidifying a high-humidity space such as an indoor pool facility, etc., performing cooling dehumidification by a heat pump and adsorption dehumidification by a desiccant, and releasing heat from the heat pump. It is related with the air-conditioning system which enabled the reproduction | regeneration processing of a desiccant continuously by this.
[0002]
[Prior art]
FIG. 7 is a conventional technique that is widely used in the United States as a dehumidifying device for the interior space of an indoor pool facility. The refrigerant path A forming the vapor compression refrigeration cycle and the evaporator 240 exchange heat with the refrigerant path A, and the indoor air is taken in with the blower 101 and the sensible heat exchanger 150 as main components, cooled and dehumidified, and returned to the room. A processing air path B and a water path C that exchanges heat with the refrigerant path A by the condenser 220 to take in pool water and heat it to return to the pool.
[0003]
As a result, high-humidity air in the pool room is taken in as processing air, pre-cooled by heat exchange with the processing air after dehumidification in the sensible heat exchanger 150, and then cooled to the dew point temperature or lower in the evaporator 240 to dehumidify. In the vapor compression refrigeration cycle generated by cooling the processing air in the condenser 220, the processing air after dehumidification is heat-exchanged with the processing air before dehumidification by the sensible heat exchanger 150 and reheated and heated. Heating the pool water with heat dissipation and returning it to the pool simultaneously dehumidifies the room and heats the pool water. The dehumidified process air was mainly recirculated from the slit duct into the room along the windows and walls so that the windows and walls of the perimeter portion did not condense.
[0004]
[Problems to be solved by the invention]
In the conventional technique as described above, the state change of the processing air is as shown in the wet air diagram of FIG. That is, the processing air (state K) taken from a high-humidity room with an average pool room temperature of 28-30 ° C. and a relative humidity of 80-90% is treated air after dehumidification by the sensible heat exchanger 150. (State M) is pre-cooled (State L) and cooled and dehumidified below the dew point temperature by the evaporator 240 (State M). The treated air after dehumidification is dehumidified by the sensible heat exchanger 150 before being dehumidified. The heat is exchanged with the process air, reheated (state N), and supplied to the room. Therefore, an enthalpy drop equal to the enthalpy drop ΔQ that is cooled from the state L to the state M in the evaporator 240 by the refrigeration cycle occurs between the indoor air (state K) and the supply air (state N) due to the heat balance. . That is, the indoor space is cooled by the enthalpy drop ΔQ. Accordingly, air having a temperature lower than the room temperature is supplied from the slit duct of the perimeter portion, and there is a problem that it feels chilly when a person who goes up from the pool enters this portion.
[0005]
Further, in order to prevent dew condensation on the windows and walls of the perimeter due to the supply air (state N), it is necessary to lower the dew point temperature (T1) of the supply air as the outside air temperature decreases. It is necessary to increase the cooling capacity ΔQ as the outside air temperature decreases. Accordingly, there is a drawback that the enthalpy drop, that is, the cooling effect between the room (state K) and the air supply (state N) increases as the outside air temperature decreases, and the discomfort of the perimeter portion that feels chilly further increases. Further, when the outside air temperature is particularly low in the severe winter season and the dew point temperature needs to be lowered to near 0 ° C., the evaporation temperature of the refrigeration cycle is lowered below the freezing point, and the heat transfer surface of the evaporator 240 is continuously frosted. There was a fault that made driving impossible.
[0006]
The present invention has been made in view of the above-described problems. Under circumstances where cooling is inappropriate, air taken from a room with high humidity is branched into treated air and regenerated air, and the treated air is cooled and dehumidified by a heat pump. Then, after further dehumidification with a desiccant, the dry bulb temperature is raised above room temperature, the dew point temperature is further lowered, and then supplied to the room, and if the cooling is appropriate, the desiccant action is weakened or stopped. The purpose is to provide a dehumidifying air conditioning system that can provide a comfortable environment throughout the year by generating a cooling effect and a dehumidifying effect, and has a high dew condensation prevention capability in the perimeter zone and is energy saving. To do.
[0007]
[Means for Solving the Problems]
The present invention has been made in order to achieve the above object, a desiccant that is regenerated by adsorbing moisture in the processed air regenerating air, the process air low-temperature heat source, and a heat pump to operate the regeneration air as a high heat source It takes indoor air, branches it into treated air and regenerated air, cools and dehumidifies the treated air with a low heat source of the heat pump, adsorbs and dehumidifies with a desiccant, and supplies the regenerated air with a high heat source of the heat pump. A dehumidifying air-conditioning system which regenerates a desiccant by passing the desiccant after heating.
[0008]
In this way, air taken from a room with high humidity is branched into treated air and regenerated air. The treated air is cooled and dehumidified with a heat pump, and then adsorbed and dehumidified with a desiccant to raise the dry bulb temperature above room temperature. Later, by supplying it indoors, there is no discomfort due to the cooling action, the dehumidifying ability is increased, and the desiccant is regenerated by heating the regenerated air by reusing heat released from the heat pump, thereby obtaining an energy saving effect. It is done.
[0009]
Also, a dehumidifying air-conditioning system that is characterized in that the supply to the specific location of the regeneration air after the desiccant regeneration as hot air for drying. In this way, even after the desiccant regeneration, by supplying the regenerated air having a high relative humidity and a high dry bulb temperature as a warm air to a specific location, it can be effectively used for a drying application.
[0010]
Also, a dehumidifying air-conditioning system that is characterized in that exhausting the regeneration air after desiccant regeneration outdoors. In this way, the indoor dehumidifying action can be enhanced by exhausting the regenerated air after the regeneration with the desiccant whose absolute humidity is higher than that in the room and outdoors to the outside.
[0011]
The present invention also includes a desiccant that adsorbs moisture in the processing air and is regenerated by the regenerating air, a compressor, an evaporator that exchanges heat with the processing air, and a first that exchanges heat with the regenerating air before desiccant regeneration. A heat pump having a condenser and a second condenser for exchanging heat with a heat medium other than the regeneration air, taking in indoor air, cooling and dehumidifying at least part of it as treated air with an evaporator, and then desiccant A part of the refrigerant compressed by the compressor of the heat pump is led to the first condenser to heat the regeneration air and the other part of the compressed refrigerant is supplied to the second A dehumidifying air-conditioning system that heats a heat medium other than regenerated air by guiding it to a condenser.
[0012]
The present invention also includes a desiccant that adsorbs moisture in the processing air and is regenerated by the regenerating air, a compressor, an evaporator that exchanges heat with the processing air, and a first that exchanges heat with the regenerating air before desiccant regeneration. A heat pump having a condenser and a second condenser for exchanging heat with a heat medium other than the regeneration air, taking in indoor air, cooling and dehumidifying at least a part thereof as processing air with an evaporator, and a heat pump A first operation mode in which the refrigerant compressed by the compressor is guided to the first condenser to regenerate the desiccant by heating the regenerated air, and the cooled and dehumidified treated air is dehumidified by the desiccant and then supplied into the room; The compressed refrigerant is guided to the second condenser to heat the heat medium other than the regenerated air, so that the regenerated air is not heated, and the cooled and dehumidified treated air is not dehumidified by the desiccant Second operation mode to be supplied, and a part of the refrigerant compressed by the compressor of the heat pump is led to the first condenser, and the regenerated air is heated and cooled and dehumidified, and then dehumidified by the desiccant and supplied to the room both the you that, characterized by a third operating configuration in which another portion of the compressed refrigerant also led to the second condenser to heat the heat medium other than the regeneration air can be selectively operated It is a dehumidifying air conditioning system.
[0013]
Further, when the second operating mode, a dehumidifying air-conditioning system that is characterized in that to stop the blower regeneration air. In this way, energy-saving operation can be performed by stopping the blower of regenerated air during the cooling operation.
[0014]
Further, the indoor air is air in the space of an indoor pool, a heat medium other than the regeneration air exchanges heat with the second condenser are dehumidifying air-conditioning system that is characterized in that a pool water. In this way, heat dissipation from the heat pump is also used for heating pool water etc., thereby adjusting the dehumidifying capacity of the desiccant to change the temperature rise due to the heat of adsorption of the processing air and generating a cooling effect as necessary The air-conditioned space can be kept comfortable even in summer.
[0015]
Also, a dehumidifying air-conditioning system that is characterized in that supplying process air after dehumidification by a desiccant in building perimeter zone. In this way, by sending the processed air having the lowest humidity and the highest dry bulb temperature to the perimeter zone, it is possible to prevent dew condensation and discomfort in the perimeter zone.
[0016]
Also, a dehumidifying air-conditioning system that is characterized by using a vapor compression heat pump as a heat pump. An absorption heat pump may be used as the heat pump .
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a dehumidifying air conditioning system according to the present invention will be described with reference to the drawings. Figure 1 is a diagram illustrating a particular installation of the dehumidifying air-conditioning system according to a reference example of the present invention. In FIG. 1, a dehumidifying air conditioner 10 having a desiccant is installed in the air-conditioned space 1 surrounding the indoor pool 40 as shown in FIG. 2, and the dehumidifying air conditioner 10 is connected to the indoor air through the air intake 12. Has come to be adopted. The taken-in indoor air is branched into treated air and regenerated air inside the dehumidifying air conditioner 10, the treated air is dehumidified with a desiccant, and the outlet of the treated air that has been dehumidified passes through the duct 50 through the window 20. , 25 are connected to slit ducts 30, 35 installed in the perimeter adjacent to each other. On the other hand, the outlet 14 of the regenerated air that has regenerated the desiccant of the dehumidifying air conditioner 10 is configured to blow out locally to the conditioned space as hot air for drying. Further, the drain generated by the cooling and dehumidification inside the dehumidifying air conditioner 10 is configured to be connected to the drainage groove 60 via the path 16.
[0018]
FIG. 2 is an explanatory diagram showing a basic configuration of the dehumidifying air conditioner 10 shown in FIG. In FIG. 2, the dehumidifying air conditioner 10 includes a vapor compression heat pump and two types of air systems, that is, processing air and regeneration air. Among these components, the vapor compression heat pump portion constitutes a vapor compression refrigeration cycle with the compressor 260, the low heat source heat exchanger (evaporator) 240, the high heat source heat exchanger (condenser) 220, and the expansion valve 250 as components. It is a thing. In the low heat source heat exchanger (evaporator) 240, the low pressure refrigerant vapor has a heat exchange relationship with the processing air before passing through the desiccant 102, and in the high heat source heat exchanger (condenser) 220, the high pressure refrigerant vapor passes through the desiccant. It is configured to have a heat exchange relationship with the previous regeneration air.
[0019]
The air system is configured as follows. The desiccant rotor 102 is configured such that the desiccant rotates in a predetermined cycle by the action of the actuator 103 across both the processing air path A and the regeneration air path B. The processing air path A is connected to the air-conditioned space 1 and the low heat source heat exchanger (evaporator) 240 via the path 110, and the processing air outlet of the low heat source heat exchanger (evaporator) 240 is for introducing indoor air. The suction port of the blower 101 is connected via a path 111, and the discharge port of the blower 102 is connected via a path 112 to the first section that performs the moisture adsorption process of the desiccant rotor 102, and the outlet of the processing air of the desiccant rotor 102 Is formed by being connected to a processing air outlet serving as an air supply port (indicated by reference numeral 50 in FIG. 1) via a path 113.
[0020]
On the other hand, the regeneration air path B connects the air-conditioned space 1 and the high heat source heat exchanger (condenser) 220 via the path 120, and the outlet of the high temperature heat source heat exchanger (condenser) 220 for the regeneration air is the room air. The suction port of the blower 140 for introduction is connected via the path 121, and the discharge port of the blower 140 is connected via the path 122 to the second section for performing the regeneration air regeneration process of the desiccant rotor 102, and the desiccant rotor 102 is connected. The regeneration air outlet of the second section for performing the regeneration air regeneration step is connected to a local outlet (indicated by reference numeral 14 in FIG. 1) of the indoor space via a path 123 to form a regeneration air path. To do. In the figure, alphabets K to S surrounded by circles are symbols indicating air states corresponding to FIG.
[0021]
Next, the cycle of the vapor compression refrigeration cycle portion of the dehumidifying air conditioner 10 configured as described above will be described. The refrigerant takes the latent heat of vaporization from the processing air in the low heat source heat exchanger (evaporator) 240 and evaporates (state a: about 10 ° C., 4.2 kg / cm ² ), and is sucked and compressed by the compressor 260 via the path 206. Is done. The compressed refrigerant (state b: about 80 ° C., 19.3 kg / cm ² ) flows into the high heat source heat exchanger (condenser) 220 via the path 202 and the sensible heat and latent heat of condensation of the refrigerant are desiccant 102. After being discharged into the regenerated air before flowing in and condensed (state c: about 65 ° C., 19.3 kg / cm ² ), it reached the expansion valve 250 via the path 203 and expanded under reduced pressure (state d: about 10 ° C., 4 After ² kg / cm ² ), the refrigerant is refluxed to the low heat source heat exchanger (evaporator) 240 via the path 205. As described above, the cycle of the vapor compression refrigeration cycle portion is not technically different from that conventionally performed in the air conditioning field such as a room air conditioner, and only the working temperature and pressure are different.
[0022]
Next, the operation of the dehumidifying air conditioner 10 using the heat pump configured as described above as a heat source will be described with reference to the wet air diagram of FIG. The process air (state K) branched from the indoor air reaches the low heat source heat exchanger (evaporator) 240 via the path 110, is cooled and dehumidified by the action of the heat pump, and the dry bulb temperature and absolute humidity are reduced (state). L). The cooled and dehumidified process air is sucked into the blower 101 and pressurized, and is sent to the first section where the moisture adsorption process of the desiccant rotor 102 is performed via the path 112, and moisture in the air is adsorbed by the desiccant rotor 102. As the absolute humidity further decreases, the temperature of the air increases due to the heat of adsorption (state M). The air whose absolute humidity is decreased and whose temperature is increased is sent to the perimeter of the air-conditioned space as supply air via the path 113. Condensed water (drain) separated from the processing air when being cooled and dehumidified by the low heat source heat exchanger (evaporator) is collected in the drain pan 245 and passes through the path 16 shown in FIG. Thrown away.
[0023]
On the other hand, regeneration of the desiccant rotor 102 is performed as follows. The regenerative air introduced from the indoor air and branched (state K) reaches the high heat source heat exchanger (condenser) 220 via the path 120 where it is heated by the refrigerant vapor to rise in temperature (state R). Through the second section where the regeneration process of the desiccant rotor 102 is performed through the path 122 to remove the moisture of the desiccant rotor 102 and perform the regeneration action (state S). Then, it returns to the room from a local outlet (indicated by reference numeral 14 in FIG. 1) of the indoor space 1.
[0024]
In this way, the dehumidifying operation can be performed by repeatedly performing the cooling dehumidification of the processing air and the adsorption dehumidification by the desiccant and the regeneration of the desiccant. At this time, the state of the air supplied to the room is the same as that of the prior art. It is very different. This will be described below.
[0025]
Processed air (state K) taken from a room with a high humidity of an average pool room temperature of 28-30 ° C. and a relative humidity of 80-90% is dew point temperature (24-28 ° C.) or less in the evaporator 240. To dehumidify (state L), the dry bulb temperature decreases (15 to 20 ° C.), and the absolute humidity decreases (11 to 15 g / kg). In this state, the dew point temperature of the processing air is higher than the low heat source temperature (evaporation temperature) of the heat pump, but further moves on the isenthalpy line in the humid air diagram by adsorbing and dehumidifying with the desiccant rotor 102 dehumidifying agent. As the dry bulb temperature rises (35-40 ° C.), the absolute humidity also drops (3.5-6 g / kg).
[0026]
The treated air thus obtained has a higher temperature than indoors, the dew point temperature is significantly lower than the evaporation temperature (0 to 6 ° C.), and the temperature difference between the dew point and the dry bulb temperature is large. Therefore, by blowing out the air thus dehumidified from the slit duct of the perimeter as shown in FIG. 1, even if the outside air temperature is low, it becomes difficult for condensation to occur on the outer wall portion such as a window. Even if a person who goes up from the pool enters the jet of air that blows out, the dry bulb temperature is high and it doesn't feel chilly. Further, even when the outside air temperature is particularly low and the dew point temperature needs to be lowered to near 0 ° C. in the severe winter season, it is not necessary to lower the evaporation temperature of the refrigeration cycle below the freezing point, so that the heat transfer surface of the evaporator 240 is frosted. However, continuous operation is possible.
[0027]
Furthermore, the regeneration air after desiccant regeneration has an absolute humidity rise (25-30 g / kg), but the dry bulb temperature is high (40-45 ° C.), so the relative humidity is around 50%, and the warm air for drying. It can also be used as a spot wind for people who have risen from the pool, and if you want to increase the dehumidifying capacity from the room, exhaust it to the outside and instead have a low absolute humidity There is no problem in taking outside air. Further, as in the installation form of FIG. 4, the regeneration air that has exited the desiccant may be supplied to the drying room 70 through the duct 14 and the air supply port 71 and then exhausted to the outside from the exhaust port 72. . Further, a sensible heat exchanger may be used between the exhaust and the outside air taken in. Thus, the regeneration air can also be used for drying.
[0028]
Next, the energy efficiency of this embodiment will be described. In this embodiment, in FIG. 3, the heat quantity (ΔQ) extracted from the processing air by cooling and dehumidification is not thrown away to the outside, but is used for heating the regeneration air by raising the temperature with a heat pump. Can be planned. That is, the drive energy (compressor input) of the heat pump first generates a cooling and dehumidifying effect, and the heat extracted at that time and the drive energy (compressor input) of the heat pump are reused as heat energy for heating the regenerative air, and by the desiccant Adsorption dehumidification effect is generated. Therefore, the drive energy (compressor input) of the heat pump can be reduced, and there is an energy saving effect. In this embodiment, a vapor compression heat pump is shown as an example of the heat pump, but the same energy saving effect can be obtained even if an absorption heat pump is used.
[0029]
Figure 5 is a diagram showing an Installation form of dehumidifying air-conditioning system according to the present invention, FIG. 6 is an explanatory view showing a basic structure of a dehumidifying air conditioner 10 shown in FIG. In this embodiment, the dehumidifying air conditioner 10 includes a compressor 260, an evaporator 240 that exchanges heat with the processing air, a first condenser 220 that exchanges heat with the regenerated air before desiccant regeneration, pool water, and heat. And a heat pump having a second condenser 230 to be replaced. As a result, the indoor air is taken in, and at least a part of the refrigerant is cooled and dehumidified by the evaporator 240 and then supplied to the room through the desiccant, and a part of the refrigerant compressed by the compressor 260 of the heat pump is supplied to the room. The regeneration air is heated by being led to the first condenser 220, and the pool water is heated by guiding another part of the compressed refrigerant to the second condenser 230. As shown in FIG. 5, the pool water flows to the second condenser 230 of the dehumidifying air conditioner 10 via paths 17 and 18 so as to exchange heat with the refrigerant.
[0030]
Further, in the present embodiment, a controller 301 is provided as a control device, and the controller 301 detects the temperature / humidity state of the indoor space and the outside air temperature to determine the load condition of cooling or heating. As a result, the three-way valve 270 for adjusting the flow rate of the refrigerant, the actuator 103 of the desiccant rotor 102 and the fans 101 and 140 are controlled, and there is no cooling effect as shown in the embodiment according to the reference example , and the user feels chilly. It is possible to generate an appropriate cooling effect depending on the situation as well as no operation mode.
[0031]
Below, an effect | action of the dehumidification air conditioning system of said embodiment is demonstrated. First, in the first operation mode, the path 207 side of the three-way valve 270 for adjusting the flow rate of the refrigerant is closed so that all the refrigerant is guided to the first condenser 220. In this case, Since it becomes the same as embodiment which concerns on a reference example , description is abbreviate | omitted.
[0032]
Next, a second operation mode in which the route 202 side of the three-way valve 270 for adjusting the refrigerant flow rate is closed and all the refrigerant is guided to the second condenser 2 30 will be described. In this case, the first condenser 220 does not act, and therefore the regeneration air is not heated, so that the desiccant cannot be regenerated. Therefore, the desiccant dehumidification action is lost, and the processing air is not adsorbed and dehumidified. Accordingly, the state M and the state L in the wet air diagram of FIG. 3 become equal, the supply air becomes lower than room temperature, and the cooling action is obtained as in the conventional example shown in FIG. Such a second mode of operation is used when it is appropriate to cool, such as in summer. If the temperature of the pool water rises and it is not desirable, the cooling water can be used to discharge the heat of the second condenser 2 30 to the external cooling tower, and the second condenser can be It can be installed outside as an air-cooled type. When there is no need to flow the regenerated air, the controller 301 may stop the blower 140 and the actuator 103 of the desiccant rotor 102 by the controller 301 for energy saving.
[0033]
Next, a third operation mode in which the first condenser 220 and the second condenser 2 30 are operated together by opening both the path 202 side and the path 207 side of the three-way valve 270 for adjusting the refrigerant flow rate. Will be described. In this case, the heating action on the regenerated air in the first condenser 220 is weakened, so the desiccant dehumidifying ability is reduced, the adsorption dehumidifying action of the processing air is lowered, and the state M in FIG. The dry bulb temperature at the outlet of the processing air is lower than that in the first operation mode. Therefore, an operation that suppresses an intermediate cooling effect between the first operation mode and the second operation mode is possible. Therefore, a comfortable indoor environment can be obtained even in the intermediate period.
[0034]
In this way, when the heating is necessary, the desiccant is operated to raise the dry bulb temperature above room temperature, and then the air is supplied to the room to prevent the cooling action and to achieve an energy saving operation form. When necessary, heat dissipation from the heat pump can be used to heat the pool water, so that the desiccant's dehumidifying capacity is stopped, the temperature rise due to the adsorption heat of the processing air is stopped, and the cooling mode is generated. In addition, since the intermediate operation mode can be adopted, the air-conditioned space of the indoor pool facility can be kept comfortable throughout the year.
[0035]
【The invention's effect】
As described above, according to the present invention, under conditions where cooling is inappropriate, air taken from a room with high humidity is branched into treated air and regenerated air, and the treated air is cooled and dehumidified with a heat pump. After further adsorption dehumidification with a desiccant to raise the dry bulb temperature above room temperature and further lower the dew point temperature, it is supplied to the room and, under appropriate conditions of cooling, weakens or stops the action of the desiccant. By generating the cooling effect and the dehumidifying effect, it is possible to provide a dehumidifying air conditioning system that is comfortable throughout the year, has a high dew condensation prevention capability in the perimeter zone, and is energy saving.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a basic structure of a dehumidifying air-conditioning system according to a reference example of the present invention.
FIG. 2 is an explanatory diagram showing a basic configuration of the dehumidifying air conditioner shown in FIG.
FIG. 3 is a moist air diagram illustrating the operation of a dehumidifying air conditioner using a heat pump as a heat source.
4 is an explanatory view showing a modification of the dehumidifying air conditioning system shown in FIG. 1. FIG.
5 is an explanatory diagram showing a form of implementation of the dehumidifying air-conditioning system according to the present invention.
6 is an explanatory diagram showing a basic configuration of the dehumidifying air conditioner shown in FIG. 5. FIG.
FIG. 7 is an explanatory view showing a conventional dehumidifying air conditioner.
8 is a moist air diagram illustrating the operation of the dehumidifying air conditioner shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air-conditioned space 10 Dehumidification air conditioner 12 Air intake port 30, 35 Slit duct 40 Indoor pool 101 Blower 102 Desiccant rotor 220 High heat source heat exchanger (condenser)
240 Low heat source heat exchanger (evaporator)
250 Expansion valve 260 Compressor A Process air path B Regenerative air path

Claims (4)

A desiccant that absorbs moisture in the processing air and is regenerated by the regenerating air, a compressor, an evaporator that exchanges heat with the processing air, a first condenser that exchanges heat with the regenerating air before the desiccant regeneration, and the regenerating air A heat pump having a second condenser that exchanges heat with a heat medium other than
After taking in indoor air and cooling and dehumidifying at least a part thereof as processing air with an evaporator, the desiccant is passed through and supplied to the room, and a part of the refrigerant compressed by the compressor of the heat pump is supplied to the first condenser. The dehumidifying air conditioning system is characterized in that the regenerative air is heated by heating the heat medium other than the regenerated air by guiding another part of the compressed refrigerant to the second condenser. A desiccant that absorbs moisture in the processing air and is regenerated by the regenerating air, a compressor, an evaporator that exchanges heat with the processing air, a first condenser that exchanges heat with the regenerating air before the desiccant regeneration, and the regenerating air A heat pump having a second condenser that exchanges heat with a heat medium other than
The room air is taken in, and at least a part of the air is cooled and dehumidified with an evaporator, and the refrigerant compressed by a heat pump compressor is led to the first condenser to regenerate the desiccant by heating the regeneration air. A first operation mode of supplying the indoors after dehumidifying the dehumidified treated air with a desiccant;
The compressed refrigerant is guided to the second condenser to heat the heat medium other than the regenerated air, so that the regenerated air is not heated, and the cooled and dehumidified treated air is supplied to the room without being dehumidified by the desiccant. Driving mode,
Both If you feed the process air a part of the refrigerant compressed by the compressor of the heat pump moistened cooled dividing by heating regeneration air is guided to the first condenser chamber after dehumidified by the desiccant, compressed refrigerant A dehumidifying air-conditioning system capable of selectively operating a third operation mode in which another part is also led to the second condenser to heat a heat medium other than regenerated air. The dehumidifying air-conditioning system according to claim 2 , wherein the blower for regenerated air is stopped during the second operation mode. The said indoor air is the air in the space of an indoor pool, and heat media other than the reproduction | regeneration air heat-exchanged by a said 2nd condenser are pool water in any one of Claim 1 thru | or 3 characterized by the above-mentioned. Dehumidification air conditioning system.

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