JP3743581B2 - Heat pump and operation method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat pump and an operation method thereof, and more particularly, to a heat pump used as a heat source device for a desiccant air conditioning system.
[0002]
[Prior art]
A desiccant air conditioner is described in US Pat. No. 2,700,537. In the desiccant type air conditioner shown in this known example, a heat source having a temperature of about 100 to 150 ° C. is required as a heat source for regeneration of the desiccant (humectant), and an electric heater and a boiler are used exclusively as the heat source. It was. Recently, by improving the desiccant, a desiccant air conditioner that can regenerate the desiccant even at a temperature of 60 to 80 ° C. has been developed, and it can be operated with a low-temperature heat source for regenerating the desiccant and cooling the treated air. Desiccant air conditioners that combine electric vapor compression heat pumps or refrigerators have been developed.
[0003]
FIG. 9 is an example of a desiccant air conditioner that combines a known electric vapor compression heat pump or refrigerator, and FIG. 10 is a Mollier diagram showing the operating state of the air conditioner of the example of FIG. In FIG. 9, reference numeral 101 is an air-conditioned space, 102 is a blower, 103 is a desiccant rotor containing a desiccant material that can selectively contact with processing air and regenerated air, 104 is a sensible heat exchanger, and 105 is humidification. , 106 is a humidifier water supply pipe, 107 to 113 are air passages for treated air, 140 is a regenerative air blower, 220 is a condenser and a heat exchanger (heater) for refrigerant and regenerated air, and 121 is sensible heat. An exchanger, 124 to 129 are air passages for regenerated air, 201 to 204 are refrigerant paths, 240 is an evaporator and a heat exchanger (cooler) for refrigerant and processing air, 250 is an expansion valve, and 260 is a compressor. Also, in the figure, circled alphabets K to V are symbols indicating air conditions corresponding to those in FIG. 10, SA represents supply air, RA represents return air, OA represents outside air, and EX represents exhaust. .
[0004]
The operation of this conventional example will be described. In FIG. 9, the air (process air) in the air-conditioned room 101 is sucked into the blower 102 through the path 107 and pressurized and sent to the desiccant rotor 103 through the path 108. Moisture in the air is adsorbed by the hygroscopic agent and absolute humidity decreases. During adsorption, the temperature of the air rises due to the heat of adsorption. The air whose humidity has decreased and its temperature has risen is sent to the sensible heat exchanger 104 via the path 109 and is cooled by exchanging heat with the outside air (regenerated air). The cooled air is sent to the cooler 240 via the path 110 and is cooled by the action of the refrigerator, and is sent to the humidifier 105 via the path 112 and the temperature is lowered in the isenthalpy process by water injection or vaporization type humidification, and the path 113 is passed. After that, it is returned to the conditioned space 101.
[0005]
Since the desiccant adsorbs moisture in this process, it needs to be regenerated. In this conventional example, the desiccant is performed as follows using outside air. The outside air (OA) is sucked into the blower 140 via the path 124, is pressurized and sent to the sensible heat exchanger 104, cools the processing air, and rises in temperature by itself, and passes through the path 125 to the next sensible heat exchanger 121. The heat rises by exchanging heat with the hot air after regeneration. Further, the regenerative air that has exited the sensible heat exchanger 121 flows into the heater 220 via the path 126, is heated by the condensation heat of the refrigerator, rises in temperature to 60 to 80 ° C., and the relative humidity decreases. Regenerated air whose relative humidity has decreased passes through the desiccant rotor 103 to remove moisture from the desiccant rotor. The regenerated air that has passed through the desiccant rotor 103 flows into the sensible heat exchanger 121 via the path 128, and after regenerating the regenerated air before regeneration, the regenerated air is discarded to the outside via the path 129.
[0006]
The process up to now will be described with reference to the Mollier diagram (FIG. 10). In FIG. 10, the air in the air-conditioned room 101 (process air: state K) is sucked into the blower 102 via the path 107, and the pressure is increased. The moisture in the air is adsorbed by the desiccant rotor 103 and is absorbed by the desiccant rotor 103, and the absolute humidity decreases and the temperature of the air rises due to the heat of adsorption (state L). The air whose humidity has fallen and the temperature has risen is sent to the sensible heat exchanger 104 via the path 109 and is cooled by exchanging heat with the outside air (regeneration air) (state M). The cooled air is sent to the cooler 240 via the path 110 and cooled by the action of the refrigerator (state N), sent to the humidifier 105 via the path 112, and the temperature is lowered in the isenthalpy process by water injection or vaporization type humidification. (State P) and then returned to the conditioned space 101 via the path 113. In this way, an enthalpy difference ΔQ is generated between the return air (K) and the supply air (P) in the room, and the air-conditioned space 101 is thereby cooled.
[0007]
The regeneration of the desiccant is performed as follows. The outside air (OA: state Q) is sucked into the blower 140 via the path 124, is pressurized and sent to the sensible heat exchanger 104, cools the processing air, and rises in temperature by itself (R) through the path 125. It flows into the sensible heat exchanger 121 and heat-exchanges with the high-temperature air after regeneration to increase the temperature (state S). Furthermore, the regenerated air that has exited the sensible heat exchanger 121 flows into the heater 220 via the path 126, is heated by the heat of condensation of the heat pump, rises in temperature to 60 to 80 ° C., and the relative humidity decreases (state T). Regenerated air whose relative humidity has decreased passes through the desiccant rotor 103 and removes moisture from the desiccant rotor (state U). Regenerated air that has passed through the desiccant rotor 103 flows into the sensible heat exchanger 121 via the path 128, and after regenerating the pre-regenerated air, the temperature of the regenerated air itself decreases (state V) and then passes through the path 129 as external exhaust. Thrown away. In this way, by repeating the regeneration of the desiccant and the dehumidification and cooling of the processing air, air conditioning by the desiccant has been performed.
[0008]
In the desiccant air conditioner configured as described above, the combined vapor compression refrigeration cycle requires a condensation temperature of about 80 ° C. and an evaporation temperature of about 10 ° C. In recent years, it has been desired to use a natural refrigerant such as ammonia that does not use a conventional chlorofluorocarbon system and has little impact on the natural environment as a refrigerant for the vapor compression refrigeration cycle, and the compressor is stopped during the summer. However, when a so-called heat storage function that can perform cooling is required, ammonia is used as a refrigerant in the refrigeration cycle to achieve such a condensation temperature, the pressure is 42 kg / cm. ² However, there is a disadvantage that the device becomes abnormally high and the device is expensive, and if it is intended to have a heat storage function, a heat storage tank having both a low temperature of about 10 ° C and a high temperature of about 80 ° C is required, It has been found that there are drawbacks that make the equipment extremely complex and expensive.
[0009]
Therefore, as a result of various studies, the inventor has an absorber, a regenerator, and a compressor, and compresses the refrigerant vapor of the regenerator and the path of the absorption medium circulating between the absorber and the regenerator with the compressor. A heat pump having a refrigerant path to be transferred to an absorber, provided with an evaporator having a heat exchange relationship with a heat medium for extracting the cooling action of the regenerator to the outside, and further having a heat exchange relationship with an absorption medium in the regenerator Providing a condenser, further providing a refrigerant storage space for storing the refrigerant condensed by introducing the refrigerant vapor compressed by the compressor to the condenser, and further providing an absorption medium storage space for storing the absorption medium concentrated by the regenerator, Further, attention was paid to a heat pump in which the refrigerant space of the evaporator was connected to the refrigerant storage space and the absorber, and by using this, it was obtained that these problems could be solved. In this case, the heat input from the outside to the heat pump is operated and discharged to the heat medium (hot water) of the absorber, so that hot water having an appropriate temperature for desiccant regeneration is obtained and the operating pressure of the heat pump It has been found that an effect can be obtained that does not need to be raised.
[0010]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described points. As an operation for storing both the cooling operation and the heating operation in the form of the concentration potential of the absorption medium, the heat storage operation or the operation for cooling while maintaining the heat storage is performed. At the same time, the thermal medium (hot water) of the absorber is heated to obtain hot water at an appropriate temperature for desiccant regeneration, and by suppressing the increase in the internal pressure of the heat pump, it is multifunctional, highly reliable, and It aims at providing the heat pump provided with the cheap heat storage function, and its operating method.
[0011]
[Means for Solving the Problems]
According to the present invention, an absorber, a regenerator, and a compressor are provided, and the path of the absorption medium circulating between the absorber and the regenerator and the refrigerant vapor of the regenerator are compressed by the compressor into the absorber. Having a refrigerant path to be transferred, providing an evaporator having a heat exchange relationship with a heat medium for extracting the cooling action of the regenerator to the outside, and providing a condenser having a heat exchange relationship with an absorption medium in the regenerator, A refrigerant storage space for storing the refrigerant condensed by introducing the refrigerant vapor compressed by the compressor to the condenser is provided, an absorption medium storage space for storing the absorption medium concentrated by the regenerator is provided, and the refrigerant space of the evaporator is In the operation method of the heat pump connected to the refrigerant storage space and the absorber, a part of the compressed refrigerant when the compressor is operated to compress the refrigerant vapor of the regenerator and condense the refrigerant in the condenser To be absorbed into the absorber You have me.
[0012]
According to the present invention, there is provided an absorber that absorbs refrigerant vapor with an absorption medium, a regenerator that separates the refrigerant vapor from the absorption medium, and a compressor that compresses the refrigerant vapor, between the absorber and the regenerator. And a heat exchanger that has a refrigerant path for compressing the refrigerant vapor of the regenerator by the compressor and transferring the refrigerant vapor to the absorber, and is in a heat exchange relationship with the heat medium that extracts the cooling action of the regenerator to the outside. An evaporator is provided, a condenser having a heat exchange relationship with an absorption medium in the regenerator is provided, a refrigerant storage space is provided for storing refrigerant condensed by introducing refrigerant vapor compressed by the compressor to the condenser. A storage space is connected to the evaporator, an absorption medium storage space for storing the absorption medium concentrated in the regenerator is provided, the absorption medium storage space is connected to the circulation path of the generator and the absorption medium, and the refrigerant of the evaporator The space is the refrigerant storage space and the space In the heat pump connected to the collector, the discharge path of the compressor is divided into a first path and a second path, and the first path is connected to the condenser via a first valve. Furthermore, the second path is connected to the absorber via a second valve, and the compressor is operated to compress the refrigerant vapor of the regenerator and open the first valve to condense the condensation. When the refrigerant is condensed in the vessel, a part of the refrigerant compressed by adjusting the second valve opening is introduced into the absorber and absorbed.
[0013]
Further, according to the present invention, the absorber that absorbs the refrigerant vapor by the absorption medium and heats the heating medium with the absorption heat, the regenerator that takes the regeneration heat from the cold medium and separates the refrigerant vapor from the absorption medium, and compresses the refrigerant vapor. A regeneration path having a compressor, a circulation path for an absorption medium circulating between the absorber and the regenerator, and a refrigerant path for compressing the refrigerant vapor of the regenerator by the compressor and transferring it to the absorber. An evaporator having a heat exchange relationship with the same cooling medium that flows in the path of the cooling medium that extracts the cooling action of the cooler to the outside is provided, and the cooling medium is cooled so that the cooling medium can selectively flow through the regenerator or the evaporator. The medium path is connected to an external cooling medium connection port via an on-off valve, and a condenser having a heat exchange relationship with the absorption medium in the regenerator is provided, and the condenser is compressed by the compressor. The refrigerant vapor is condensed by the path and the condenser that branches and guides it. A path for guiding the refrigerant to the refrigerant storage space is provided, the refrigerant storage space is connected to the evaporator, an absorption medium storage space for storing the absorption medium concentrated in the regenerator is provided, and the absorption medium storage space is connected to the generator. In the heat pump configured to connect, connect the absorption medium storage space to the absorption medium circulation path exiting the regenerator via an on-off valve, and connect the refrigerant space of the evaporator to the absorber. The discharge path is divided into a first path and a second path, the first path is connected to the condenser via a first valve, and the second path is a second path. The compressor is connected to the absorber via a valve, the regenerator is provided with a pressure detector, and a control mechanism for adjusting the opening of the second valve is provided by a signal of the pressure detector, and the compressor Is operated to compress the refrigerant vapor of the regenerator and open the first valve. When the refrigerant is condensed in the condenser, the pressure of the regenerator is detected. When the pressure of the regenerator increases, the second valve is opened, and when the pressure of the regenerator decreases, the second pressure is opened. A part of the refrigerant compressed by adjusting the opening degree of the second valve so as to close the second valve is introduced into the absorber and absorbed. Therefore, when performing the heat storage operation and the operation method of concentrating the absorption medium in the operation method for maintaining the heat storage, the absorber is operated, and the heat input from the outside to the heat pump is used as the absorption heat to the heat medium (hot water) of the absorber. By discharging, it is possible to obtain hot water at an appropriate temperature for desiccant regeneration, and it is possible to obtain the effect of not increasing the operating pressure of the heat pump, so it has a multi-function, highly reliable and inexpensive heat storage function In addition, it is possible to provide a heat pump and a desiccant air-conditioning system, and further, a natural refrigerant such as a water-ammonia-based absorption working medium can be used.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a heat pump according to the present invention will be described with reference to FIGS.
[0015]
FIG. 1 is a diagram showing a basic configuration of a heat pump embodying the present invention, and FIG. 2 is a diagram showing a basic configuration of a desiccant air conditioner combined with the heat pump of FIG. In FIG. 1, a heat pump embodying the present invention absorbs refrigerant vapor with an absorbing medium and heats a heating medium (warm water) with absorbed heat through a heat transfer tube 30 and regenerative heat through a heat transfer tube 32. A regenerator 2 for separating the refrigerant vapor from the medium (cold water) and separating the refrigerant vapor from the absorption medium; a heat exchanger 5 for the absorption medium; and a compressor 7 for compressing the refrigerant vapor. A heat pump having absorption medium circulation paths 21, 22, 23, 24, 25, and 26 that circulate between them, and a discharge path of the compressor 7 that sends the refrigerant obtained by compressing the refrigerant vapor of the regenerator 2 by the compressor 7 is a first. The first path 43 is connected to the condenser 4 via the first valve 56, and the second path 42 is further connected to the second valve 55. The regenerator 2 is cooled by the heat transfer tube 32. An evaporator 3 having a heat exchange relationship is provided via the heat transfer pipe 31 and the same cooling medium that flows through the paths 62 and 63 of the cooling medium taken out to the outside, and the cooling medium is the regenerator 2 or the evaporation medium. The cooling medium passages 62 and 63 are connected via the on-off valves 70 and 71, and the passages 67 and 68 are connected to the cooling medium connection ports 72 and 73 and the passages 64 and 65 so that the vessel 3 can selectively flow. 60 and 61, and further provided with a condenser 4 in a heat exchange relationship with the absorption medium in the regenerator 2, and further provided with a path 44 for guiding the condensed refrigerant to the refrigerant storage space 14. Further, the refrigerant storage space 14 is connected to the evaporator 3 via the refrigerant path 45, the valve 52, and the refrigerant path 46, and an absorption medium storage space 12 for storing the absorption medium concentrated in the regenerator 2 is further provided. Medium storage space 12 Is connected to the generator 2 via a path 27, an on-off valve 51 and a path 28, and further through the absorption medium storage space 12 and the absorption medium circulation path 21 and path 29 exiting the regenerator, via a three-way valve 50. And the refrigerant space of the evaporator 3 is connected to the absorber 1 via the path 47. Further, the regenerator 2 is provided with a pressure detector 91, and the signal from the pressure detector 91 A control mechanism 90 for adjusting the opening degree of the second valve 55 is provided, the compressor 7 is operated to compress the refrigerant vapor of the regenerator 2, and the first valve 56 is opened to allow the refrigerant to pass through the condenser 4. When the pressure in the regenerator increases, the second valve 55 is opened. When the pressure in the regenerator 2 decreases, the second valve is detected. A part of the refrigerant compressed by adjusting the opening degree of the second valve 55 so as to close 55 is an absorber. It is obtained by adapted to introduce absorbed.
[0016]
The desiccant air conditioner shown in FIG. 2 is supplied from the heat pump shown in FIG. 1 through the cold water passage (cold water) and the hot medium (hot water) through the cold water passages 60 and 61 and the hot water passages 80 and 81, respectively. Connected to the machine and configured to circulate.
[0017]
The desiccant air conditioner of FIG. 2 is configured as follows. The air-conditioned space 101 is connected to the suction port of the processing air blower 102 via the path 107, the discharge port of the blower 102 is connected to the desiccant rotor 103 via the path 108, and the processing air outlet of the desiccant rotor 103 is the regeneration air Is connected to the sensible heat exchanger 104 having a heat exchange relationship with the sensible heat exchanger 104 via the path 109, and the outlet of the processing air of the sensible heat exchanger 104 is connected to the chilled water heat exchanger 115 via the path 110. The processing air outlet of the humidifier 115 is connected to the humidifier 105 via a path 119, and the processing air outlet of the humidifier 105 is connected to the conditioned space 101 via a path 111 to form a processing air cycle. On the other hand, the regeneration air path connects the outside air to the suction port of the regenerative air blower 140 via the path 124, and the discharge port of the blower 140 connects to the sensible heat exchanger 104 that has a heat exchange relationship with the processing air. The regenerative air outlet of the sensible heat exchanger 104 is connected to the low temperature side inlet of another sensible heat exchanger 121 via the path 125, and the low temperature side outlet of the sensible heat exchanger 121 is the hot water heat exchanger. 120 is connected to the regeneration air outlet of the hot water heat exchanger 120 via the passage 127 and the regeneration air outlet of the desiccant rotor 103 is sensible heat exchange. A cycle in which the high temperature side inlet of the heat exchanger 121 is connected via the path 128, and the high temperature side outlet of the sensible heat exchanger 121 is connected to the external space via the path 129 to take in the regenerative air from the outside and exhaust it to the outside. The It is formed. The hot water inlet of the hot water heat exchanger 120 is connected to the outlet 81 of the hot water path of the heat pump via the path 122, and the hot water outlet of the hot water heat exchanger 120 is the inlet of the hot water path of the heat pump via the path 123 and the hot water pump 150. Connect to 80. The cold water inlet of the chilled water heat exchanger 115 is connected to the outlet 61 of the chilled water path of the heat pump via the path 117, and the chilled water outlet of the chilled water heat exchanger 115 is connected to the inlet of the chilled water path of the heat pump via the path 118 and the pump 160. 60 to connect. In the figure, alphabets K to V circled are symbols indicating air states corresponding to those in FIG. 8, SA represents supply air, RA represents return air, OA represents outside air, and EX represents exhaust. .
[0018]
The operation method of the present embodiment will be described below.
[0019]
First, in the case of performing a heat storage operation, such operation is generally performed as a reserve of cooling capacity to cover part of the cooling load during the daytime using late-night power in the summer. In this operation mode, the heat pump is set and operated as shown in FIG. In FIG. 3, the on-off valve 56 is open, and the path 41 and the path 43 communicate with each other. Further, the control valve 55 detects the pressure of the regenerator 2 so as to keep the pressure of the regenerator 2 at a set value by the action of the control mechanism 90, and when the pressure of the regenerator 2 rises, the second valve When the pressure in the regenerator 2 drops, the opening of the second valve is adjusted so that the second valve is closed, and a part of the compressed refrigerant is introduced into the absorber 1 and absorbed. Further, the on-off valve 51 is open, and the absorbent medium storage space 12 and the regenerator 2 are in communication. Further, the valve 52 is closed, and the refrigerant storage space 14 and the evaporator 3 are not in communication. Further, the on-off valves 72 and 73 are closed, and no cold medium (cold water) flows through the evaporator 3. Furthermore, the on-off valves 70 and 71 are closed, and no cold medium (cold water) flows through the regenerator 2. Furthermore, the direction of the path 21 of the three-way valve 50 is closed, and the regenerator 2 and the absorption medium path 22 are not in direct communication. In the air conditioner, the blower 102 is stopped in FIG. 2 and the air supply to the air-conditioned space is stopped. Further, the air blower 140 is operated to continue air blowing so that the desiccant can be regenerated. Furthermore, cold water is stopped and only hot water is operated. Furthermore, the compressor 7 and the solution pump 6 of the heat pump are operated.
[0020]
The operation of the heat pump thus set will be described. When the compressor 7 is operated in FIG. 3, refrigerant vapor is generated from the absorption medium in the regenerator 2, and the refrigerant is compressed and passes through the paths 41 and 43. 2 flows into the condenser 4 in a heat exchange relationship with the heat exchanger 2. The refrigerant is condensed in the condenser 4 by removing heat from the absorption medium of the regenerator 2. At this time, the regeneration heat when the refrigerant vapor is generated from the absorption medium in the regenerator 2 is covered by the condensation heat of the refrigerant, but the condensation heat is generally larger than the regeneration heat because the power of the compressor is applied, Therefore, the absorption medium temperature and pressure in the regenerator 2 tend to increase. However, when the pressure of the absorption medium in the regenerator 2 rises due to the action of the pressure detector 91, the control mechanism 90, and the control valve 55 provided in the regenerator 2, the control valve 55 opens, and refrigerant vapor is supplied to the absorber 1. The excess vapor is sent and absorbed by the absorber 1, and when the pressure of the absorption medium in the regenerator 2 decreases, the control valve 55 is closed, and the refrigerant vapor sent to the absorber 1 is throttled to hold the refrigerant vapor in the regenerator 2. Thus, the pressure of the regenerator 2 can be kept at a set value. The refrigerant vapor sent to the absorber 1 is absorbed by the absorption medium, and the absorption heat is cooled by heat exchange between the absorption medium and the heating medium via the heat transfer tube 30.
[0021]
At this time, the hot water itself is heated by the cooling of the absorption medium and the temperature rises, but the heat is exchanged with the outside air brought about by the action of the blower 140 of the air conditioner in FIG. Is done. At this time, the desiccant rotor 103 is regenerated by regenerated air whose temperature has risen and relative humidity has decreased. The condensed refrigerant is guided and stored in the refrigerant storage space 14 via the path 44. The absorption medium is concentrated in the regenerator 2 and then flows from the regenerator 2 through the path 27, the on-off valve 51 and the path 28, through the absorption medium storage space 12, and into the pump 6 through the path 29 and the absorption medium path 22. Then, after exchanging heat with the absorbing medium returning from the absorber 1 by the heat exchanger 5 through the path 23 by the action of the pump 6, it flows into the absorber 1 through the path 24 and absorbs a part of the refrigerant from the compressor 7. After being slightly diluted, the refrigerant is refluxed to the regenerator 2 through the path 25, the heat exchanger 5, and the path 26, and is circulated through the circulation path. In such an operation method, some of the refrigerant absorbs the refrigerant in the absorber 1 and dilutes the absorption medium, but most of the refrigerant is separated from the same absorption medium and flows into the condenser 4 to be condensed. Therefore, as a whole, the concentration of the absorption medium proceeds, and when the refrigerant is sufficiently stored in the refrigerant storage space 14, the operation in this operation mode is stopped and the operation mode is shifted to the next operation mode.
[0022]
The heat storage process by concentration of the absorption medium so far will be described with reference to FIG. FIG. 4 is a Düring diagram showing the process of concentration of the absorbing medium. In FIG. 4, the absorbing medium in the regenerator 2 is in a state C, and the refrigerant vapor (state E) is separated by the action of the compressor 7. The separated refrigerant is compressed (state F), most of which is sent to the condenser 4 and condensed (state G), and the remaining part is decompressed via the control valve 55 and sent to the absorber 1 to be absorbed by the absorption medium. (State A). The absorption medium circulating in the absorption medium path exits the regenerator 2 (state C) and is heated by the heat exchanger (state D), flows into the absorber 1 and absorbs the refrigerant vapor (state A), and then exchanges heat. It is cooled by the regenerator (state B) and returns to the regenerator 2 again. The condensation heat at the time of condensation heats the absorption medium in the regenerator 2 to cover the regeneration heat. Also, the absorbed heat at the time of absorption is cooled by warm water (80 ° C. in the figure), transferred to an air conditioner, and used for regeneration of the desiccant. In this operation method, cold water is not produced, and as described above, hot water is produced and used for heating the regeneration air of the desiccant, and the hot water is cooled and returned to the heat pump. When this operation mode ends, the condensed refrigerant (state G) and the concentrated absorption medium (state C) are stored in the storage spaces.
[0023]
In this operation method, if the supply of the compressed refrigerant vapor sent from the second path to the absorber 1 is stopped, the heat input (compressor power) to the heat pump is gradually accumulated, and the absorption medium temperature rises. Finally, when the temperature of the absorption medium in the absorber 1 becomes equal to or higher than the hot water temperature (80 ° C. or higher in the figure), heat dissipation to the hot water starts to be performed. At this time, the absorption medium temperatures of the absorber 1 and the regenerator 2 are almost the same because no heat is radiated to the outside, so that the temperature of the regenerator 2 rises to near the temperature of hot water. Since the regeneration heat of the regenerator 2 is transmitted from the condenser 4 as described above, the condensation temperature also rises above the hot water temperature. In order to regenerate the desiccant, the hot water temperature needs to be 60 to 80 ° C. Therefore, the condensation temperature rises to about 80 ° C., and the condensation pressure at that time is 42 kg / cm. ² As a result, the pressure ratio of the compressor becomes abnormally high, and the wall pressure of the devices becomes extremely thick in order to secure the pressure resistance of the component devices, resulting in a high pressure that is not suitable for practical use. However, according to the present invention, the internal pressure is 20 kg / cm by introducing the refrigerant into the absorber 1 using the second path as in this operation method. ² The following can be suppressed. As described above, according to the present invention, the heat storage operation can be performed while suppressing the increase in the internal pressure of the heat pump. The operation method according to the embodiment of FIG. 3 can obtain a heat storage action, that is, a storage action of the cooling action by separating the refrigerant from the absorption medium and storing it in the form of concentration potential in the operation method shown in FIG. 7 described later. I will explain it again. In this operation method, only the desiccant is regenerated by warm water in the air conditioner. This operation will be described below.
[0024]
In FIG. 2, hot water flows into the air conditioner from the heat pump via a path 81. In this operation method, the outside air is taken in via the path 124 and flows into the sensible heat exchanger 104 by the action of the blower 140, but the sensible heat exchanger 104 stops the processing air system that circulates in the conditioned space. Therefore, it does not act, and therefore it flows into another sensible heat exchanger 121 via the path 125 without changing its temperature, and heat exchanges with the regenerated air after regeneration of the desiccant to increase the temperature, and then hot water heat exchange via the path 126 It flows into the vessel 120, where it is heated by warm water and the temperature rises and the relative humidity decreases. The regenerative air that has exited the hot water heat exchanger 120 flows into the sensible heat exchanger 121 via the path 128 to reheat the regenerated air, and is then exhausted to the outside via the path 129.
[0025]
Thus, according to the present invention, the desiccant of the stopped air conditioner can be simultaneously regenerated during the heat storage operation. Thermal storage operation is normally performed at midnight, and the relative humidity often increases due to a decrease in temperature at midnight in the summer. Therefore, if the desiccant is left in contact with such outside air, the desiccant absorbs moisture. The ability to start cooling the next morning may be insufficient, but performing regeneration of the desiccant in this way at the same time as late-night heat storage has the effect of smoothly showing the ability at the start of operation the next day. is there.
[0026]
Next, an operation method and an operation in the case where the cooling operation is performed while holding the heat storage by using the heat storage together will be described. Such operation is for performing cooling operation without using much heat storage in preparation for full-scale cooling operation during the day, after the heat storage is completed using midnight power. Normally, the cooling load is the largest during the time period from noon to 4:00 pm, and it is effective to use heat storage intensively during that time period. Is effective as a whole.
[0027]
In this operation method, the heat pump is set and operated as shown in FIG. In FIG. 5, the on-off valve 56 is open, and the path 41 and the path 43 communicate with each other. Further, the control valve 55 detects the pressure of the regenerator 2 so as to keep the pressure of the regenerator 2 at a set value by the action of the control mechanism 90, and when the pressure of the regenerator 2 rises, the second valve When the pressure in the regenerator 2 drops, the opening of the second valve is adjusted so that the second valve is closed, and a part of the compressed refrigerant is introduced into the absorber 1 and absorbed. Further, the on-off valve 51 is opened, and the absorbent medium storage space 12 and the regenerator 2 are in communication. Further, the valve 52 is open, and the refrigerant is sent from the refrigerant storage space 14 to the evaporator 3. Further, the on-off valves 72 and 73 are opened, and a cold medium (cold water) is passed through the evaporator 3. Further, the on-off valves 70 and 71 are closed, and the cold medium (cold water) does not flow into the regenerator 2. Furthermore, the direction of the path 21 of the three-way valve 50 is closed, and the regenerator 2 and the absorption medium path 22 are not in direct communication. Further, the compressor 7 and the solution pump 6 of the heat pump are operated, and the air conditioner is operated.
[0028]
The operation of the heat pump set in this way will be described. When the compressor 7 is operated in FIG. 5, refrigerant vapor is generated from the absorption medium in the regenerator 2, and the refrigerant is compressed and passes through the paths 41 and 43. 2 flows into the condenser 4 in a heat exchange relationship with the heat exchanger 2. The refrigerant is condensed in the condenser 4 by removing heat from the absorption medium of the regenerator 2. At this time, the regeneration heat when the refrigerant vapor is generated from the absorption medium in the regenerator 2 is covered by the condensation heat of the refrigerant, but the condensation heat is generally larger than the regeneration heat because the power of the compressor is applied, Therefore, the absorption medium temperature and pressure in the regenerator 2 tend to increase. However, when the pressure of the absorption medium in the regenerator 2 rises due to the action of the pressure detector 91, the control mechanism 90, and the control valve 55 provided in the regenerator 2, the control valve 55 opens, and refrigerant vapor is supplied to the absorber 1. The excess vapor is sent and absorbed by the absorber 1, and when the pressure of the absorption medium in the regenerator 2 decreases, the control valve 55 is closed, and the refrigerant vapor sent to the absorber 1 is throttled to hold the refrigerant vapor in the regenerator 2. Thus, the pressure of the regenerator 2 can be kept at a set value.
[0029]
There is another refrigerant flow in this mode of operation. Refrigerant is supplied to the evaporator 3 from the refrigerant storage space 14 (the valve 52 may be provided with a flow rate adjusting mechanism such as a temperature type expansion valve or float valve). The refrigerant evaporates due to the suction action of the refrigerant vapor. At that time, the cold water is cooled by removing heat of evaporation from the refrigerant through the heat transfer pipe 31. The refrigerant evaporated in the evaporator 3 flows into the absorber 1 through the path 47 and is absorbed. In the absorber 1, the refrigerant flowing from the evaporator 3 via the path 47 and the refrigerant compressed from the regenerator 2 by the compressor 7 and flowing via the path 42 are absorbed by the absorbing medium, and the absorbed heat is absorbed by the absorbing medium and the heating medium. (Hot water) is cooled by exchanging heat through the heat transfer tube 30. At this time, the hot water is heated by itself by cooling the absorption medium, and the temperature rises. However, the heat is exchanged with the regenerated air brought about by the action of the air conditioner blower 140 in FIG. Used for air heating. The refrigerant compressed by the compressor 7 and condensed by the condenser 4 is guided to the refrigerant storage space 14 via the path 44. The absorbing medium flows from the regenerator 2 through the path 27, the on-off valve 51 and the path 28, through the absorbing medium storage space 12, into the pump 6 through the path 29 and through the path 22 of the absorbing medium. After exchanging heat with the absorbing medium returning from the absorber 1 by the heat exchanger 5 via the path 23, the refrigerant flows from the compressor 7 and the evaporator 3 through the path 24 and flows into the absorber 1 and is diluted. 25, the heat exchanger 5 and the path 26 are returned to the regenerator 2 to circulate through the circulation path.
[0030]
The process of the action of the heat pump in the conventional operation method will be described with reference to FIG. FIG. 6 is a Duhring diagram showing the process of operation of the heat pump. In FIG. 6, the absorbing medium in the regenerator 2 is in the state C, and the refrigerant vapor (state E) is separated by the action of the compressor. The separated refrigerant is compressed (state F), most of which is sent to the condenser 4 and condensed (state G), and the remaining part is decompressed via the control valve 55 and sent to the absorber 1 to be absorbed by the absorption medium. However, the operation by this compressor is the operation by the same cycle as the heat storage operation described above, and the absorbing medium is subjected to the concentration operation in the regenerator 2. In the evaporator 3, the refrigerant evaporates due to the suction action of the refrigerant vapor from the absorber 1 (state H).
[0031]
The evaporated refrigerant flows into the absorber through the path 47 and is absorbed (state A), and the operation by this absorber is the same operation as the operation by the known absorption refrigeration cycle, and the absorption medium undergoes dilution in the absorber. In the evaporator, the cold water is cooled by removing the heat of evaporation from the cold water during the evaporation. The cooled cold water is transferred to an air conditioner and used for cooling and cooling the processing air. The absorption medium circulating in the absorption medium path exits the regenerator 2 (state C) and is heated by the heat exchanger (state D), flows into the absorber 1 and flows from the compressor and from the evaporator. Are simultaneously absorbed (state A), cooled by a heat exchanger (state B), and returned to the regenerator again. Also, the absorbed heat at the time of absorption is cooled by warm water (80 ° C. in the figure), transferred to an air conditioner, and used for regeneration of the desiccant. As described above, in the second operation mode, the heat pump can simultaneously cool the cold water and heat the hot water while simultaneously concentrating and diluting the absorption medium.
[0032]
In this operation method, if the supply of the compressed refrigerant vapor sent from the second path to the absorber 1 is stopped, only the absorber 1 exists as a device that can release heat from the heat pump to the outside. The heat input to the compressor (compressor power) is gradually accumulated in the absorption medium, the absorption medium temperature rises, and finally the temperature of the absorption medium in the absorber 1 exceeds the hot water temperature (80 ° C. or more in the figure). At that point, heat is released to the hot water. At this time, the absorption medium temperatures of the absorber 1 and the regenerator 2 are almost the same because no heat is radiated to the outside, so that the temperature of the regenerator 2 rises to near the temperature of hot water. Since the regeneration heat of the regenerator 2 is transmitted from the condenser 4 as described above, the condensation temperature also rises above the hot water temperature. In order to regenerate the desiccant, the hot water temperature needs to be 60 to 80 ° C. Therefore, the condensation temperature rises to about 80 ° C., and the condensation pressure at that time is 42 kg / cm. ² As a result, the pressure ratio of the compressor becomes abnormally high, and the wall pressure of the devices becomes extremely thick in order to secure the pressure resistance of the component devices, resulting in a high pressure that is not suitable for practical use. However, according to the present invention, the internal pressure is 20 kg / cm by introducing the refrigerant into the absorber 1 using the second path as in the present operation method. ² The following can be suppressed. As described above, according to the present invention, the heat storage operation can be performed while suppressing the increase in the internal pressure of the heat pump.
[0033]
The cold / hot water produced by the heat pump in this way is sent to the air conditioner and performs the cooling action as follows. In FIG. 2, the air in the room 101 to be air-conditioned (process air) is sucked into the blower 102 through the passage 107, pressurized, and sent to the desiccant rotor 103 through the passage 108, and moisture in the air is absorbed by the desiccant rotor hygroscopic agent. Adsorption reduces absolute humidity. During adsorption, the temperature of the air rises due to the heat of adsorption. The air whose humidity has decreased and its temperature has risen is sent to the sensible heat exchanger 104 via the path 109 and is cooled by exchanging heat with the outside air (regenerated air). The cooled air is sent to the cold water heat exchanger 115 via the path 110 and further cooled. The cooled processing air is sent to the humidifier 105 and the temperature is lowered in the isenthalpy process by water jetting or vaporization type humidification, and is returned to the conditioned space 101 via the path 111.
[0034]
Since the desiccant rotor has adsorbed moisture in this process, regeneration is necessary. In this embodiment, the outside air is used as regeneration air as follows. The outside air (OA) is sucked into the blower 140 via the path 124, is pressurized and sent to the sensible heat exchanger 104, cools the processing air, and rises in temperature by itself, and passes through the path 125 to the next sensible heat exchanger 121. The heat rises by exchanging heat with the hot air after regeneration. Furthermore, the regenerative air that has exited the sensible heat exchanger 121 flows into the hot water heat exchanger 120 via the path 126 and is heated by the hot water to rise in temperature to 60 to 80 ° C., thereby reducing the relative humidity. The regenerated air that has exited the hot water heat exchanger 120 and has a reduced relative humidity passes through the desiccant rotor 103 to remove the moisture in the desiccant rotor and regenerates the air. The regenerated air that has passed through the desiccant rotor 103 flows into the sensible heat exchanger 121 via the path 128, and after regenerating the regenerated air before regeneration, the regenerated air is discarded to the outside via the path 129. Thus, a normal cooling operation can be performed by combining the heat pump of the present invention with a desiccant air conditioner. The operation of such a desiccant air conditioner is the same as that of the conventional example shown in FIG. 9 except that the heat source for cooling and heating is transmitted from cold water and hot water instead of the refrigerant. Since the Mollier diagram is applicable, description of the action on the Mollier diagram is omitted.
[0035]
Thus, according to the operation method of FIG. 5, since the cooling operation can be performed while simultaneously performing the concentration and dilution of the absorption medium, the concentration of the absorption medium stored in the heat storage operation can be minimized. Cooling operation can be performed while maintaining heat storage.
[0036]
Next, an operation method and an operation in the case of performing the cooling operation without consuming the heat storage and operating the compressor by the operation method of FIG. 7 will be described. Such an operation is for performing cooling operation by turning off the power of the compressor as a peak cut of electric power during the daytime. Normally, the cooling load is the largest during the time period from noon to 4:00 pm, and it is effective to use heat storage intensively during the time period. Therefore, the operation in the main operation mode is effective.
[0037]
In the operation method of FIG. 7, the heat pump is set and operated as follows. In FIG. 7, the on-off valve 56 is closed, and the path 41 and the path 43 do not communicate with each other. Further, the control valve 55 is completely closed by cutting off the control mechanism 90, and the on-off valve 51 is open, so that the absorbent medium storage space 12 and the regenerator 2 are in communication. Further, the valve 52 is open, and the refrigerant is sent from the refrigerant storage space 14 to the evaporator 3. Further, the on-off valves 72 and 73 are opened, and a cold medium (cold water) is passed through the evaporator 3. Further, the on-off valves 70 and 71 are closed, and the cold medium (cold water) does not flow into the regenerator 2. Furthermore, the direction of the path 21 of the three-way valve 50 is closed, and the regenerator 2 and the absorption medium path 22 are not in direct communication. Further, the compressor 7 of the heat pump is stopped, the solution pump 6 is operated, and the air conditioner is operated.
[0038]
The operation of the heat pump thus set will be described. In FIG. 7, the evaporator 3 is supplied with refrigerant from the refrigerant storage space 14 (the valve 52 is equipped with a flow rate adjusting mechanism such as a temperature expansion valve or a float valve). In the evaporator 3, the refrigerant evaporates due to the suction action of the refrigerant vapor from the absorber 1. At that time, the cold water is cooled by removing heat of evaporation from the refrigerant through the heat transfer pipe 31. The refrigerant evaporated in the evaporator 3 flows into the absorber 1 through the path 47 and is absorbed. In the absorber 1, the refrigerant flowing from the evaporator 3 through the path 47 is absorbed by the absorption medium, and the absorption heat is transferred to the hot water through heat exchange between the absorption medium and the hot water via the heat transfer pipe 30.
[0039]
At this time, the hot water is heated by itself by cooling the absorption medium, and the temperature rises. However, the heat is exchanged with the regenerated air brought about by the action of the air conditioner blower 140 in FIG. Used for air heating. The absorbing medium flows from the regenerator 2 through the path 27, the on-off valve 51 and the path 28, through the absorbing medium storage space 12, and flows into the pump 6 through the path 29 and the absorbing medium path 22. After the heat exchange with the absorption medium returning from the absorber 1 through the heat exchanger 5 through the heat exchanger 5, the refrigerant flows into the absorber 1 through the path 24, absorbs the refrigerant from the evaporator 3, is diluted, and then the path 25, the heat exchanger 5. Then, it returns to the regenerator 2 through the path 26 and circulates in the circulation path. In this case, the regenerator 2 does not concentrate the absorption medium, so the absorption medium simply passes through the regenerator 2. The diluted absorption medium flows into the absorption medium storage space 12 and gradually dilutes the absorption medium stored inside.
[0040]
The process of the operation of the heat pump in the operation method of FIG. 7 will be described with reference to FIG. FIG. 8 is a Duhring diagram showing the process of operation of the heat pump. In FIG. 8, the absorbing medium in the absorbing medium storage space 12 is normally stored in a C state (in the figure, the refrigerant concentration of the absorbing medium is 20%) having a sufficient absorbing capacity at the start of this operation method. When the absorbing medium (aqueous ammonia solution) in this state is sent to the absorber 1 by the action of the pump 6 and heat exchanged with hot water of about 75 ° C., the absorbing action that can evaporate the refrigerant (ammonia) at about 10 ° C. is achieved. Is generated, absorbs the refrigerant (state A), is diluted, and returns to the absorption medium storage space 12 through the regenerator 2. Since the absorption medium storage space 12 has a large amount of absorption medium, the absorption medium is gradually diluted by the absorption medium returning from the absorber 1 and finally the absorption temperature is reduced to the point when the refrigerant concentration is diluted to 30%. The operation can be continued until it gradually begins to decline. By storing the absorption medium and the refrigerant in the absorption medium storage space 12 and the refrigerant storage space 14 in this way, a heat storage effect of cold and warm is obtained.
[0041]
In the evaporator 3, the refrigerant evaporates due to the suction action of the refrigerant vapor from the absorber 1 (state H). The evaporated refrigerant flows into the absorber through the path 47 and is absorbed (state A), and the operation of this absorber is the same operation as that of the known absorption refrigeration cycle, and the absorption medium is diluted. In the evaporator, the cold water is cooled by removing the heat of evaporation from the cold water during the evaporation. The cooled cold water is transferred to an air conditioner and used for cooling and cooling the processing air. Also, the absorbed heat at the time of absorption is cooled by warm water (80 ° C. in the figure), transferred to an air conditioner, and used for regeneration of the desiccant. Thus, in the third operation mode, the heat pump can simultaneously perform both the cooling of the cold water and the heating of the hot water without operating the compressor by the action of the absorbing medium stored in the form of the concentration potential. .
[0042]
The cold / hot water produced by the heat pump in this way is sent to the air conditioner and performs the cooling action as follows. In FIG. 2, air (processed air) in the room 101 to be air-conditioned is sucked into the blower 102 through the passage 107, pressurized and sent to the desiccant rotor 103 through the passage 108, and moisture in the air is absorbed by the desiccant rotor's moisture absorbent. Adsorption reduces absolute humidity. During adsorption, the temperature of the air rises due to the heat of adsorption. The air whose humidity has decreased and its temperature has risen is sent to the sensible heat exchanger 104 via the path 109 and is cooled by exchanging heat with the outside air (regenerated air). The cooled air is sent to the cold water heat exchanger 115 via the path 110 and further cooled. The cooled processing air is sent to the humidifier 105 and the temperature is lowered in the isenthalpy process by water jetting or vaporization type humidification, and is returned to the conditioned space 101 via the path 111.
[0043]
Since the desiccant rotor has adsorbed moisture in this process, regeneration is necessary. In this embodiment, the outside air is used as regeneration air as follows. The outside air (OA) is sucked into the blower 140 via the path 124, is pressurized and sent to the sensible heat exchanger 104, cools the processing air, and rises in temperature by itself, and passes through the path 125 to the next sensible heat exchanger 121. The heat rises by exchanging heat with the hot air after regeneration. Further, the regenerative air that has exited the sensible heat exchanger 121 flows into the hot water heat exchanger 120 via the path 126 and is heated by the hot water to rise in temperature to 60 to 80 ° C., and the relative humidity is lowered. The regenerated air that has exited the hot water heat exchanger 120 and has a reduced relative humidity passes through the desiccant rotor 103 to remove the moisture in the desiccant rotor and regenerates it. The regenerated air that has passed through the desiccant rotor 103 flows into the sensible heat exchanger 121 via the path 128, and after regenerating the regenerated air before regeneration, the regenerated air is discarded to the outside via the path 129. Thus, a cooling operation can be performed by combining the heat pump of the present invention with a desiccant air conditioner. The operation of such a desiccant air conditioner is the same as that of the conventional example shown in FIG. 9 except that the heat source for cooling and heating is transmitted from cold water and hot water instead of the refrigerant. Since the Mollier diagram is applicable, description of the action on the Mollier diagram is omitted.
[0044]
Thus, according to the operation method of FIG. 7, since the cooling operation can be performed while diluting the stored absorption medium, the cooling operation can be performed without operating the compressor. Therefore, the operation method of FIG. 3 has a heat storage effect.
[0045]
As described above, according to the present invention, by storing the concentrated absorption medium and the refrigerant, both the cooling action and the heating action are stored in the form of the concentration potential of the absorption medium, and when taking out the heat storage, the cooling action and It can be taken out at the same time as both heating effects, and when operating to concentrate and store heat in the absorption medium, heat input from the outside to the heat pump is activated to the heat medium (hot water) of the absorber By discharging, it is possible to obtain hot water having an appropriate temperature for desiccant regeneration and to obtain an effect of not increasing the operating pressure of the heat pump.
[0046]
【The invention's effect】
As described above, according to the present invention, as an operation for storing both the cooling action and the heating action in the form of the concentration potential of the absorption medium, during the heat storage operation or the operation of cooling while holding the heat storage, By introducing a part of the compressed refrigerant to the absorber and heating the thermal medium (hot water) of the absorber by the absorption action, obtaining hot water at an appropriate temperature for desiccant regeneration, and suppressing the increase in the internal pressure of the heat pump Thus, it is possible to provide a heat pump having a heat storage function that is multifunctional, highly reliable, and inexpensive.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a basic configuration of an embodiment of a heat pump according to the present invention.
FIG. 2 is an explanatory diagram showing a basic configuration of an embodiment of a desiccant air conditioner for carrying out the present invention.
FIG. 3 is an explanatory view showing a first operation method of the heat pump according to the present invention.
4 is an explanatory diagram showing a cycle of the heat pump of FIG.
FIG. 5 is an explanatory view showing a second operation method of the heat pump according to the present invention.
6 is an explanatory diagram showing a cycle of the heat pump in FIG.
FIG. 7 is an explanatory view showing a third operation method of the heat pump according to the present invention.
FIG. 8 is an explanatory diagram showing a cycle of the heat pump of FIG.
FIG. 9 is an explanatory diagram showing a basic configuration of a conventional desiccant air conditioner.
FIG. 10 is an explanatory diagram showing a Desiccant air conditioning cycle of air in a conventional desiccant air conditioner in a Mollier diagram.
[Explanation of symbols]
1 ... Absorber
2 ... Regenerator
3. Evaporator
4 ... Condenser
5 ... Heat exchanger
6 ... Solution pump
7 ... Compressor
12 ... Absorbing medium storage space
14 ... Refrigerant storage space
21 ... Absorption medium (solution) path
22 ... Absorption medium (solution) path
23 ... Absorption medium (solution) path
24 ... Absorption medium (solution) path
25 ... Absorption medium (solution) path
26 ... Absorption medium (solution) path
27 ... Absorption medium (solution) path
28 ... Absorption medium (solution) path
29 ... Absorption medium (solution) path
30 ... Heat transfer tube (hot water)
31 ... Heat transfer tube (cold water)
32 ... Heat transfer tube (cold water)
40: Refrigerant path
41 ... Refrigerant path
42 ... Refrigerant path
43 ... Refrigerant path
44 ... Refrigerant path
45 ... Refrigerant path
46 ... Refrigerant path
50 ... 3-way valve
51 ... Valve
52 ... Valve
53 ... 3-way valve
55 ... Control valve
56 ... Valve
60 ... cold water route
61 ... cold water route
62 ... Cold water path
63 ... Cold water path
64 ... cold water route
65 ... cold water route
70 ... Valve
71 ... Valve
72 ... Valve
73 ... Valve
80 ... Warm water route
81 ... Warm water path
90 ... Control mechanism
91 ... Pressure detector
92 ... Control signal path
93 ... Control signal path
101 ... Air-conditioned space
102 ... Blower
103 ... Desiccant rotor
104 ... Sensible heat exchanger
105 ... Humidifier
106 ... water supply pipe
107 ... Air path
108 ... Air path
109 ... Air path
110 ... Air path
111 ... Air path
115 ... cold water heat exchanger
117 ... Cold water path
118 ... Cold water path
119 ... Air path
120 ... Hot water heat exchanger
121 ... Sensible heat exchanger
122 ... hot water route
123 ... hot water route
124 ... Air path
125 ... Air path
126 ... Air path
127 ... Air path
128 ... Air path
129 ... Air path
130 ... Air path
140 ... Blower
150 ... Hot water pump
160 ... cold water pump
201: Refrigerant path
202 ... Refrigerant path
203 ... Refrigerant path
204: Refrigerant path
220 ... Condenser
240 ... Evaporator
250 ... Expansion valve
260 ... Compressor
a: Absorption medium cycle state point
b: Absorption medium cycle state point
c: Absorption medium cycle state point
d: Absorption medium cycle state point
e ... Absorption medium cycle state point
f: Absorption medium cycle state point
A: Absorption medium cycle state point
B: Absorption medium cycle state point
C: Absorption medium cycle state point
D: Absorption medium cycle state point
E: Absorption medium cycle state point
F: Absorption medium cycle state point
K ... Air condition point of desiccant air conditioning
L ... Air condition point for desiccant air conditioning
M: Air condition point for desiccant air conditioning
N ... Air condition point of desiccant air conditioning
P ... Air condition point for desiccant air conditioning
Q ... Air condition point for desiccant air conditioning
R ... Air condition point for desiccant air conditioning
S ・ ・ ・ Air condition point of desiccant air conditioning
T ・ ・ ・ Air condition point of desiccant air conditioning
U ... Air condition point for desiccant air conditioning
V ... Air condition point of desiccant air conditioning
X ... Air condition point of desiccant air conditioning
SA ... Air supply
RA ... Return
EX ... Exhaust
OA ... Outside air
ΔQ ... Cooling effect

Claims (3)

It has an absorber, a regenerator, and a compressor, and has a path for an absorbing medium that circulates between the absorber and the regenerator, and a refrigerant path that compresses the refrigerant vapor of the regenerator by the compressor and transfers it to the absorber. And a refrigerant having a heat exchange relationship with a heat medium for extracting the cooling action of the regenerator to the outside, a condenser having a heat exchange relationship with an absorption medium in the regenerator, and a refrigerant compressed by the compressor A refrigerant storage space is provided for storing the condensed refrigerant by introducing the vapor into the condenser, an absorption medium storage space for storing the absorption medium concentrated by the regenerator is provided, and the refrigerant space of the evaporator is the refrigerant storage space and the absorption When operating the compressor to compress the refrigerant vapor of the regenerator and condense the refrigerant with the condenser in the operation method of the heat pump connected to the condenser, a part of the compressed refrigerant is introduced into the absorber. Heat characterized by absorbing Method of operating a pump. An absorber that absorbs refrigerant vapor with an absorbing medium, a regenerator that separates the refrigerant vapor from the absorbing medium, and a compressor that compresses the refrigerant vapor, and circulation of the absorbing medium that circulates between the absorber and the regenerator A refrigerant path that compresses the refrigerant vapor of the path and the regenerator with a compressor and transfers the refrigerant vapor to an absorber, and is provided with an evaporator that is in a heat exchange relationship with a heat medium that extracts the cooling action of the regenerator to the outside. A condenser having a heat exchange relationship with an absorption medium in the chamber is provided, a refrigerant storage space is provided for storing refrigerant condensed by introducing the refrigerant vapor compressed by the compressor to the condenser, and the refrigerant storage space is connected to the evaporator. An absorption medium storage space for storing the absorption medium concentrated by the regenerator is connected, the absorption medium storage space is connected to the generator and the circulation path of the absorption medium, and the refrigerant space of the evaporator is connected to the refrigerant storage space and Heat connected to the absorber In the pump, the discharge path of the compressor is configured to be branched into a first path and a second path, and the first path is connected to the condenser via a first valve. This path is connected to the absorber via a second valve, the compressor is operated to compress the refrigerant vapor of the regenerator, and the first valve is opened to condense the refrigerant with the condenser. A heat pump characterized in that when the second valve opening is adjusted, a part of the compressed refrigerant is introduced into the absorber and absorbed. An absorber that absorbs the refrigerant vapor with the absorption medium and heats the heating medium with the absorbed heat; a regenerator that takes the regenerative heat from the cold medium and separates the refrigerant vapor from the absorption medium; and a compressor that compresses the refrigerant vapor, There are a circulation path of an absorption medium that circulates between the absorber and the regenerator, and a refrigerant path that compresses the refrigerant vapor of the regenerator by the compressor and transfers it to the absorber. An evaporator having a heat exchange relationship with the same cooling medium as that flowing through the path of the cooling medium to be taken out is provided, and an opening / closing valve is provided for the cooling medium path so that the cooling medium can selectively flow through the regenerator or the evaporator. A condenser having a heat exchange relationship with the absorption medium in the regenerator is provided, and the refrigerant vapor compressed by the compressor is branched and guided to the condenser. The refrigerant condensed in the passage and the condenser is The refrigerant storage space is connected to the evaporator, the absorption medium storage space for storing the absorption medium concentrated by the regenerator is provided, the absorption medium storage space is connected to the generator, and the absorption medium In the heat pump configured to connect the storage space to the absorption medium circulation path exiting the regenerator through an on-off valve and connect the refrigerant space of the evaporator to the absorber, the discharge path of the compressor is the first The first path is connected to the condenser via a first valve, and the second path is connected to the absorber via a second valve. The regenerator is provided with a pressure detector, a control mechanism for adjusting the opening of the second valve according to the signal of the pressure detector is provided, and the compressor is operated to perform the regeneration. The refrigerant vapor in the condenser is compressed and the first valve is opened to draw the refrigerant in the condenser. When contracting, the pressure of the regenerator is detected. When the pressure of the regenerator increases, the second valve is opened, and when the pressure of the regenerator decreases, the second valve is closed. A heat pump characterized in that a part of the refrigerant compressed by adjusting the opening of the second valve is introduced into the absorber and absorbed.

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