JP2006046859A - Chemical heat storage type solar heat pump system, program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems of installation space and construction in existing solar heat pump systems, which require a hot water storage tank of large capacity. <P>SOLUTION: A chemical heat storage type solar heat pump system comprises a first storage container 8 for a heat storage medium, a first heating means for decomposing or separating the heat storage medium, a cooling means 6 for cooling at least one of the decomposed or separated heat storage media at heat storage, a second storage container 7 for storing the heat storage medium cooled by the cooling means 6, a second heating means 6 for heating the heat storage medium storing heat at heat radiation, a heat generation means 2 for recombining the heat storage medium storing heat to generate heat, a heat pump cycle, a solar cell panel 9, a heat collection means 10 for collecting heat from the solar cell panel 9, and a heat medium passage 11 capable of heat exchange with the heat collection means 10 and second heating means 6 and for conducting a heat medium. The first heating means is a radiator 2 of the heat pump cycle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a solar system including a small heat storage unit that heats a heat storage material to decompose or separate and store heat.

  A conventional heat pump system including a heat storage unit (for example, see Patent Document 1) uses a heat output from a high-temperature and high-pressure refrigerant discharged from a compressor to circulate hot water in a hot water storage tank and raise the temperature. A large amount of hot water is stored in a hot water tank while repeating the cycle.

  There is a chemical heat storage method as a method for storing heat at high density. As shown in FIG. 9, the chemical heat storage system supplies heat to the heat storage material AB, causes the heat storage material to be separated or decomposed, and forms a heat storage material in the heat storage state of A and B, and vaporizes one of the B It is made into a heat storage state by separating from A by an operation such as.

  A regenerative heat pump system (for example, see Patent Document 2) applying this principle is a substance generated by this reaction by combining a regenerative heat pump and a compression heat pump and using the heat output from the refrigerant as reaction heat. It stores heat chemically by storing.

  On the other hand, it is known that the power generation efficiency of solar cell panels generally decreases with increasing temperature. 2. Description of the Related Art Conventionally, a system has been proposed in which a solar cell is cooled to improve power generation efficiency, and heating or hot water supply is performed using the cooled (heat collected) solar heat.

  In this type of air-conditioning / heating water heater using solar heat, a solar battery panel is provided on the surface of the solar heat collector, and the heat collected by the heat collector is heated using a working fluid such as hot water or antifreeze. A sensible heat transfer form is used, and a structure in which the transferred heat is temporarily stored in a hot water storage tank and used as a heat source for hot water supply or heating is proposed and partially put into practical use (for example, Patent Documents) 3).

Moreover, the structure which transports solar heat with water similarly to the above, stores it in a hot water storage tank, and performs hot water supply and heating with the heat pump using it as a heat source is also shown (for example, refer patent document 4).
Japanese Patent Laid-Open No. 11-193958 Japanese Patent Laid-Open No. 5-288425 JP-A-10-281562 (for example, FIGS. 1 and 8) Japanese Patent Laid-Open No. 7-234020 (for example, FIG. 1)

  In the heat pump system using solar heat having the conventional heat storage unit, a large-capacity hot water storage tank is required. For this reason, there existed the subject on construction, such as installation space, the weight of a hot water storage tank, and the load resistance of the installation part.

  In view of the above-described conventional problems, an object of the present invention is to provide a chemical heat storage type solar heat pump system that can be installed and constructed even when the installation space is smaller or the load resistance of the installation part is smaller. .

In order to achieve the above object, the first present invention provides:
A first storage container of heat storage material;
First heating means for heating and decomposing or separating the heat storage material;
At the time of heat storage, cooling means for cooling at least one of the decomposed or separated heat storage material,
A second storage container for storing the heat storage material cooled by the cooling means to be in a heat storage state;
A second heating means for heating the heat storage material in the heat storage state during heat dissipation;
Heating means for recombining the heat storage material in the heat storage state to generate heat;
A heat pump cycle having a radiator, a compressor, an evaporator, and an expansion valve;
A solar panel,
Heat collecting means for collecting heat from the solar cell panel;
Heat exchange with the heat collecting means and the second heating means, and a heat medium flow path through which the heat medium flows,
It is a chemical heat storage type solar heat pump system in which the first heating means is a radiator of the heat pump cycle.

The second aspect of the present invention is
In the chemical heat storage solar heat pump system according to the first aspect of the present invention, the heat medium is a fluid containing a latent heat material.

The third aspect of the present invention
The first heating means is a first heat exchanging means also serving as the heat generating means,
The first storage container and the first heat exchanging means are integrated with each other according to the first chemical heat storage solar heat pump system of the present invention.

The fourth aspect of the present invention is
The second heating unit is a second heat exchange unit that also serves as the cooling unit,
The second storage container and the second heat exchanging means are integrated with each other according to the first chemical heat storage solar heat pump system of the present invention.

The fifth aspect of the present invention is
The heat medium flow path is
A flow path connecting the heat collection means and the second heat exchange means,
It is possible to exchange heat with the evaporator of the heat pump cycle, and has an evaporator-side flow path that branches between the heat collecting means and the second heat exchange means of the heat medium flow path and merges again. ,
A three-way valve provided at the site of joining;
Control means for controlling the three-way valve so that the heat medium passes through the evaporator-side flow path when storing heat and the heat medium does not pass through the evaporator-side flow path when radiating heat; It is a chemical heat storage type solar heat pump system of the present invention.

The sixth aspect of the present invention
The three-way valve is a first three-way valve,
The heat medium flow path is
Bypassing the heat collecting means, one end is joined to the flow path, and the other end is joined to the evaporator side flow path, the heat collecting means bypass flow path,
A second three-way valve provided at a portion where the other end of the heat collecting means bypass flow path and the evaporator-side flow path meet;
The control means prevents the heat medium from flowing between the flow path or the evaporator side flow path and the previous heat collection means bypass flow path at the other end side of the heat collection means bypass flow path during heat radiation. It is a chemical heat storage type solar heat pump system according to the fifth aspect of the present invention, which controls the second three-way valve.

The seventh aspect of the present invention
The evaporator as a first evaporator,
The heat pump cycle further includes a second evaporator between the compressor and the expansion valve,
The heat medium flow path is
A first flow path installed so as to be able to exchange heat with the heat collecting means and the second evaporator;
A second flow path installed so as to be able to exchange heat with the heat exchange means B and the evaporator;
With respect to the flow direction of the heat medium, the first flow path upstream of the heat collecting means and downstream of the second evaporator, and the second flow path of the first flow path. A third flow path upstream of the evaporator and connecting to the downstream portion of the heat exchange means B;
The first flow path downstream of the heat collecting means and upstream of the second evaporator, and the second flow path downstream of the first evaporator and the heat exchange. A four-way valve provided in the upstream part of the means;
A three-way valve provided at a portion where the second flow path and the third flow path merge;
At the time of heat storage, the first flow path and the second flow path are closed, and at the time of heat dissipation, the heat medium is the heat collecting means, the four-way valve, the heat exchange means B, the three-way valve, the third And a control means for controlling the four-way valve and the three-way valve so as to sequentially pass through the heat flow collecting means and the heat collecting means. The chemical heat storage solar heat pump system according to the fourth aspect of the present invention.

Further, the eighth aspect of the present invention is
The heat medium flow path is
The chemical heat storage type solar heat pump system according to the first aspect of the present invention further includes a heat generation means side flow path which bypasses the second heating means and is installed so as to be able to exchange heat with the heat generation means.

The ninth aspect of the present invention provides
A heated fluid flow path through which a heated fluid is installed so as to be able to exchange heat with the heating means;
1st this invention further equipped with the to-be-heated fluid heating means which transfers the heat from the said heat medium to the said to-be-heated fluid flow path on the downstream of the said heat generating means on the basis of the distribution direction of the to-be-heated fluid. This is a chemical heat storage solar heat pump system.

The tenth aspect of the present invention is
For heat storage, the heat pump cycle is operated to heat the first storage container using electric power in a time zone where the electricity rate is low, and the heat medium is made to flow from the second storage container to the heat medium. 1 is a chemical heat storage solar heat pump system according to the first aspect of the present invention.

The eleventh aspect of the present invention is
Of the chemical heat storage solar heat pump system of the fifth aspect of the present invention,
The computer executes control means for controlling the three-way valve so that the heat medium passes through the evaporator-side heat medium flow path during heat storage and does not pass through the evaporator-side heat medium flow path during heat dissipation. It is a program to make it.

The twelfth aspect of the present invention is
In the chemical heat storage solar heat pump system of the sixth aspect of the present invention, at the time of heat dissipation, at the other end side of the heat collecting means bypass flow path, between the flow path or the evaporator side flow path and the heat collecting means bypass flow path. Is a program for causing a computer to execute control means for controlling the second three-way valve so that the heat medium does not flow.

The thirteenth aspect of the present invention is
In the chemical heat storage solar heat pump system of the seventh aspect of the present invention, the first flow path and the second flow path are closed during heat storage, and during heat dissipation, the heat medium is the heat collecting means, the four-way valve. , A program for causing a computer to execute control means for controlling the four-way valve and the three-way valve so as to sequentially pass through the heat exchange means B, the three-way valve, the third flow path, and the heat collecting means. .

The fourteenth aspect of the present invention is
A recording medium carrying any one of the programs of the 11th to 13th aspects of the present invention, which is a recording medium that can be processed by a computer.

  According to the present invention, it is possible to provide a chemical heat storage solar heat pump system that can be installed and constructed even when the installation space is smaller or the load resistance of the installation part is smaller.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram illustrating a schematic configuration of a chemical heat storage solar heat pump system according to the first embodiment and an operation state during heat storage. Moreover, FIG. 2 is a figure showing the driving | running state at the time of heat dissipation of the chemical thermal storage type solar heat pump system in this Embodiment 1. FIG. In addition, the arrow described in the figure has shown the moving direction of a refrigerant | coolant, a thermal storage material, and a thermal medium.

As shown in FIG. 1, the chemical heat storage type solar heat pump system according to the first embodiment includes a compressor 1, a condenser 2 acting as a heating means, an expansion valve 3, an evaporator 4 in which refrigerant is evaporated, and these. Are provided with a heat pump composed of a refrigerant flow path 5 that sequentially connects the two. In the present embodiment, CO ₂ is used as the refrigerant flowing through the refrigerant flow path of the heat pump.

  The heat storage material container 8 that is connected to the condenser 2 and filled with the heat storage material, the heat storage material container 7 that stores the heat storage material in the heat storage state, and the connecting pipe 17 that connects the heat storage material container 7 and the heat storage material container 8 are connected. Is installed. In addition, a heated fluid channel 12 connected to the heat storage material container 8 and the condenser 2 is provided. City water circulates in the heated fluid channel 12 and is heated by the heat generated by the heat storage material in the heat storage material container 8. Since the condenser 2 and the heat storage material container 7 are integrated, the refrigerant in the refrigerant flow path 5, the heat storage material in the heat storage material container 8, and the city water in the heated fluid flow path 12 exchange heat with each other. It is possible.

  Further, a solar cell panel 9 mainly composed of tempered glass and polycrystalline Si is installed, and an example of the heat collecting means of the present invention is substantially parallel to the opposite side of the solar radiation surface of the solar cell panel 9. The heat collecting unit 10 is integrally provided. A pump 14 is installed on a flow path 11 that circulates from the inside of the heat collection section 10 to the heat collection section 10 through the heat storage material container 7, and a heat medium containing a latent heat material is contained in the flow path 11. It is in circulation. Moreover, the heat exchanger 6 which can exchange heat between the heat medium in the flow path 11 and the heat storage material in the heat storage material container 7 is installed, and this heat exchanger 6 and the heat storage material container 7 are integrated. Yes. As this heat medium, a heat medium in which microcapsules containing paraffin are dispersed in water is used, and the solar cell panel 9 is cooled by the sensible heat of the heat medium or the phase change heat of the latent heat material.

  Further, with reference to the flow direction of the heat medium at the time of heat storage (details will be described later), it branches from the flow path 11 on the upstream side of the heat storage material container 7 and between the heat collecting part 10 and the heat storage material container 7. In addition, an evaporator-side flow path 15 that passes through the evaporator 4 and merges with the flow path 11 again is provided. A valve 16 is installed at the junction of the evaporator side flow path 15 and the flow path 11. Furthermore, the control means 40 which controls switching of the compressor 1, the expansion valve 3, the pump 14, and the valve | bulb 16 is installed.

  An example of the first storage container of the present invention corresponds to the heat storage material container 8 in the first embodiment, and an example of the first heating means of the present invention corresponds to the condenser 2. An example of the cooling means of the present invention corresponds to the heat exchanger 6. An example of the second storage means of the present invention corresponds to the heat storage material container 7, and an example of the second heating means of the present invention corresponds to the heat exchanger 6. An example of the heat generating means of the present invention corresponds to the condenser 2, and an example of the heat radiator of the present invention corresponds to the condenser 2.

  An example of the first heat exchange means of the present invention corresponds to the condenser 2 in the first embodiment. An example of the second heat exchange means of the present invention corresponds to the heat exchanger 6.

  An example of the heat medium flow path of the present invention corresponds to the flow path 11 and the evaporator-side flow path 15 in the first embodiment. An example of the evaporator-side flow path of the present invention corresponds to the evaporator-side flow path 15 in the first embodiment, and an example of the flow path of the present invention corresponds to the flow path 11 and the fifth book. The three-way valve of the invention corresponds to the valve 16 in the first embodiment.

  The operation of the chemical heat storage type solar heat pump system of the first embodiment having the above configuration will be described below.

(Operation during heat storage)
First, the operation during heat storage will be described with reference to FIG.

  When the compressor 1 is operated, heat is pumped up by the evaporator 4, and the refrigerant whose pressure is increased by the compressor 1 and heated is radiated by the condenser 2. In the condenser 2, the refrigerant has a temperature of about 110 ° C., and the heat storage material container 8 coupled to the condenser 2 is heated.

  In the heat storage material container 8, a pair of water and an adsorbent for water, which is an example of the heat storage material of the present invention, is connected and separated from the adsorbent by receiving heat from the condenser 2. . Then, the water is transported to the heat storage material container 7 via the connecting pipe 17.

  As the adsorbent used here, for example, silica gel or the like carrying an appropriate amount of a hygroscopic material such as metal chloride can be used. In this case, separation of water from water and silica gel (heat storage reaction) by evaporation of water is performed under conditions of 0.001 MPa and about 50 ° C. An example of the heat storage material of the present invention corresponds to a composite of silica gel and water, and the heat storage material in the heat storage state corresponds to water and silica gel.

  On the other hand, in the heat storage material container 7, water vapor generated by the heat storage reaction in the heat storage material container 8 is condensed and stored. The heat of condensation of the water vapor here is received by a heat medium flowing through the flow path 11 by the heat exchanger 6. Here, the heat medium is a fluid containing a latent heat material. For example, a microcapsule containing a latent heat storage material such as paraffin is dispersed in water.

  Here, heat input to the heat pump cycle is performed by the heat medium flowing through the flow path 11 in the direction of the arrow in FIG.

  In the heat storage state, the heat medium flows through the evaporator-side flow path 15 by switching the valve 16 by the control means 40. That is, the heat medium circulates so as to return to the heat collection unit 10 through the heat collection unit 10, the pump 14, the evaporator 4, the valve 16, and the heat exchanger 6 in order.

  The amount of heat of the solar cell panel 9 absorbed by the heat collecting unit 10 is stored by sensible heat and latent heat of the heat medium. Therefore, in the evaporator 4, heat can be generated in the condenser 2 with higher efficiency than pumping heat from the atmosphere, and this effect has a temperature difference between the atmosphere and the heat medium. It is remarkable.

  Further, the condensed heat generated in the heat storage material container 7 when storing the heat storage material in the heat storage state is recovered by the heat medium passing through the heat storage material container 7. That is, the heat medium cooled by supplying heat to the evaporator 4 flows into the flow path 11 via the evaporator-side flow path 15, and performs a cycle in which the heat exchanger 6 absorbs heat again. It is like that.

  By repeating the above operation, the heat storage material in the heat storage material container 8 is dehydrated, and water is condensed and stored in the heat storage material container 7 in the heat storage state.

  In the first embodiment, condensation heat generated in the heat storage material container 7 is recovered by the heat exchanger 6, but this operation needs to be performed when the amount of heat generated to cool the solar cell is excessive. However, the heat collecting unit 10 may partially radiate heat. Moreover, you may design so that heat recovery may be performed partially, and a part of condensation heat is supplemented with the cooling heat of the unused solar cell panel 9. FIG.

  Moreover, in this Embodiment 1, since the latent heat material located in the inside of the heat collecting part 10 stores heat due to solar radiation during the daytime, for example, even when using a late-night electricity time zone fee system, the heat is stored. It is possible to pump up with the evaporator 4. Therefore, it is desirable from the viewpoint of economy that the operation at the time of heat storage is performed in a time zone in which the power rate is low.

  Further, if necessary, an atmospheric heat exchanger (not shown) for air-refrigerant heat exchange may be provided on the upstream side of the evaporator 4 in the refrigerant flow path 5 to input heat from the atmosphere. .

(Operation during heat dissipation)
Next, the operation during heat radiation will be described with reference to FIG.

  As shown by the arrows in FIG. 2, the valve 16 is switched by the control means 40 so that the heat medium does not flow through the evaporator-side flow path 15, and the heat medium flows in the reverse direction when storing heat. The pump 14 is operated so as to circulate in the interior 11. That is, the heat medium is circulated so as to return to the heat collection unit 10 through the heat collection unit 10, the heat exchanger 6, and the pump 14 in this order.

  By transferring heat from the heat medium to the heat storage material container 7 via the heat exchanger 6, the stored water is transported to the heat storage material container 8 via the connecting pipe 17. The And water adsorb | sucks to the thermal storage material in the thermal storage material container 8, and heat_generation | fever is performed with the adsorption heat. At that time, since the heated fluid channel 12 is provided so as to exchange heat with the heat storage material in the heat storage material container 8, the water flowing through the heated fluid channel 12 is heat-exchanged and heated.

  In the first embodiment, when heat demand such as hot water supply is generated at the heat output port 13, the heat medium is circulated through the flow path 11 in the direction opposite to that when heat is stored, and the heat storage material container 7 in the heat storage state is heated. It is supposed to be. Here, in the first embodiment, the flow path 11 is provided through the heat storage material container 7 in the heat storage state so as to exchange heat inside thereof, but the heat storage material container in the heat storage state so as to exchange heat outside. 7 You may provide so that the exterior may be wound.

  In addition, you may provide separately the storage part of the thermal medium which absorbed the solar heat in the flow path 11 according to the space.

  In the first embodiment, the heat collecting unit 10 is provided with a fluid of a latent heat material and is circulated through the flow path 11. However, the heat collecting unit 10 is provided with a latent heat material for a fixed bed. It is also possible. In that case, another heat medium such as water or antifreeze liquid is separately circulated through the flow path 11 and a heat exchanging means with the latent heat material of the fixed bed is also required. Therefore, it is more preferable to use a fluid containing a latent heat material as a heat medium because the heat collecting part can be configured in a smaller and thinner shape.

  Further, since the heat storage material container 8 has a heat capacity of a heat storage material such as silica gel filled therein, even when steam is supplied from the heat storage material container 7 in a heat storage state and water is adsorbed, the initial stage is a sensible heat capacity. Therefore, it is difficult to sufficiently raise the temperature to a predetermined temperature. Therefore, in this Embodiment, it is preferable to provide a heat insulating material on the outer periphery of the heat storage material container 8 to suppress heat radiation.

  Further, as shown in FIG. 3, the flow path 11 is branched by a valve 21 to form a bypass 22 that is an example of the heat generation means side flow path of the present invention and does not pass through the heat exchanger 6. The heat storage material container 8 is configured to be able to exchange heat. By doing in this way, the heat from the heat collecting part 10 can be supplied to both the heat storage material container 7 and the heat storage material container 8 at the time of heat radiation. And when there is a demand from the heat output port 13 (in the case of an exothermic reaction), it becomes possible to heat the heat storage material container 8, and the time loss due to the sensible heat of the heat storage material container can be reduced. The water in the heated fluid channel 12 can be quickly heated.

  It is also possible to control the amount of the heat medium flowing into the bypass 22 by controlling the valve 21 according to the atmospheric temperature, the refrigerant temperature, and the hot water supply temperature.

  Further, the chemical heat storage solar heat pump system shown in FIG. 4 includes a valve 23 provided between the heat collecting unit 10 of the flow path 11 and the heat storage material container 7, and a branch from the valve 23 between the valve 16 and the pump 14. And a bypass 24 that joins the flow path 11. In addition, a heat exchanger 25 which is an example of the heated fluid heating means of the present invention is installed so that heat can be exchanged between the bypass 24 and the heated fluid flow path 12. By adopting such a configuration, it is possible to reduce the amount of heat supplied by the heat storage material container 8 by supplying heat to the water in the heated fluid channel 12 in advance during heat dissipation.

  Further, in this way, when there is a demand from the heat output port 13, the water in the heated fluid flow path 12 can be quickly heated, and the heat storage material container 8, the heat storage material container 7 in the heat storage state, and It is possible to make related materials compact.

  In addition, in order to reduce the power for circulating the heat storage fluid, it is also possible to suppress the flow resistance by adding a surfactant or the like as conventionally used.

(Embodiment 2)
FIG. 5 is a schematic configuration diagram of the chemical heat storage solar heat pump system according to the second embodiment and a diagram illustrating an operation state during heat storage. Moreover, FIG. 6 is a figure showing the driving | running state at the time of heat dissipation of the chemical thermal storage type solar heat pump system in this Embodiment 2. FIG. The chemical heat storage type solar heat pump system according to the second embodiment has the same basic configuration as that of the first embodiment, except that a bypass 19 that bypasses the heat collecting unit 10 is provided. Therefore, the difference from the first embodiment will be mainly described. In addition, the same code | symbol is attached | subjected about the component same as Embodiment 1. FIG.

  The chemical heat storage solar heat pump system according to the second embodiment is different from the first embodiment in that the flow direction of the heat medium during heat storage is opposite, but the evaporator side is based on the flow direction of the heat medium during heat storage. A bypass 19 is provided to connect the downstream side of the evaporator 4 in the flow path 15 and the heat collecting section 10 and the heat storage material container 7 in the flow path 11. A valve 26 is installed at the junction of the bypass 19 with the flow path 11, and a valve 27 is installed at the junction of the bypass 19 with the evaporator-side flow path 15.

  In the second embodiment, the pump 14 on the flow path 11 upstream of the heat exchanger 6 and downstream of the valve 16 is installed with reference to the flow direction of the heat medium during heat storage. . A heat exchanger 18 is further installed between the evaporator 4 and the expansion valve 3 with reference to the refrigerant flow direction of the heat pump cycle.

  Further, in place of the control means 40 of the first embodiment, control means 41 for controlling the valves 16, 26, 27, the compressor 1, the expansion valve 3, and the pump 14 is installed.

  An example of the first three-way valve of the present invention corresponds to the valve 16 in the second embodiment, and an example of the second three-way valve of the present invention corresponds to the valve 27. An example of the heat medium flow path of the sixth aspect of the present invention corresponds to the flow path 11, the evaporator side flow path 15, and the bypass 19, and an example of the heat collecting means bypass flow path of the present invention corresponds to the bypass 19. Equivalent to.

  The operation of the chemical heat storage type solar heat pump system according to the second embodiment having the above configuration will be described below.

(Operation during heat storage)
First, the operation during heat storage will be described with reference to FIG.

  In FIG. 5, the operation in the heat storage mode of the chemical heat storage solar heat pump system in the second embodiment is the same as that in the first embodiment. When the compressor 1 is operated, heat is pumped up by the evaporator 4, and the compressor The refrigerant whose pressure has been increased by 1 and whose temperature has been increased radiates heat in the condenser 2.

  In the heat storage material container 8, a pair of water and an adsorbent for water as an example of the heat storage material is coupled and receives water from the condenser 2 to store water via the connecting pipe 17. Transport to material container 7.

  Here, the heat input to the heat pump cycle is performed from the atmosphere by the heat exchanger 18, the heat medium flows in the direction of the arrow in FIG. 5, and the heat of the heat medium via the heat storage material container 7 is transferred by the evaporator 4. This is done by collecting.

  In the heat storage state, the valve 16 is opened in the direction of the evaporator-side flow path 15 by the control means 41, and the valves 26 and 27 are opened in all directions. In the heat storage state, the heat medium circulates to the heat collection unit 10 through the heat collection unit 10, the valve 26, the heat exchanger 6, the pump 14, the valve 16, the evaporator 4, and the valve 27 in this order. On the other hand, the heat medium branched by the valve 27 returns to the flow path 11 through the bypass 19 and the valve 26. For this reason, the heat medium cooled by supplying heat to the evaporator 4 joins the flow path 11 again by the valve 26 via the bypass 19, and the condensed heat generated in the heat storage material container 7 by the heat exchanger 6. A cycle that absorbs water is performed.

  In this operation, it is not always necessary to circulate all the heat medium through the bypass 19, and it is possible to return to the heat collecting unit 10 without passing through the evaporator side flow path 15 by controlling the valve 16. In addition, by controlling the valve 27, a part of the heat medium that has transferred heat by the evaporator 4 may be returned to the heat collecting unit 10 via the evaporator-side flow path 15.

  By repeating the above operation, the heat storage material in the heat storage material container 8 is dehydrated, and water is condensed and stored in the heat storage material container 7 in the heat storage state.

(Operation during heat dissipation)
Next, the operation during heat dissipation will be described based on FIG. The valve 16 and the valve 27 are switched by the control means 41, and the pump 14 is operated. Here, the valve 16 is closed in the direction of the evaporator-side flow path 15, and the valve 27 is closed in the direction in which the heat medium flows to the heat collecting unit 10. The distribution direction of the heat medium is the same as that during heat storage, and the heat medium circulates so as to return to the heat collection unit 10 through the heat collection unit 10, the heat exchanger 6, and the pump 14 in order.

  As in the first embodiment, heat is transferred from the heat medium to the heat storage material container 7 via the heat exchanger 6, so that heat is transferred from the heat storage material container 7 to the heat storage material container 8 via the connecting pipe 17. Water is transported. And water adsorb | sucks to the thermal storage material in the thermal storage material container 8, and heat_generation | fever is performed with the adsorption heat. At that time, since the heated fluid channel 12 is provided so as to exchange heat with the heat storage material in the heat storage material container 8, the water flowing through the heated fluid channel 12 is heat-exchanged and heated. .

(Embodiment 3)
FIG. 7 is a schematic configuration diagram of the chemical heat storage solar heat pump system according to the third embodiment and a diagram illustrating an operation state during heat storage. Moreover, FIG. 8 is a figure showing the driving | running state at the time of heat dissipation of the chemical thermal storage type solar heat pump system in this Embodiment 3. In FIG. The basic configuration of the chemical heat storage solar heat pump system of the third embodiment is the same as that of the first embodiment, but the configuration of the heat medium flow path is different. Therefore, the description will be centered on differences from the first embodiment. In addition, the same number is attached | subjected about the component same as Embodiment 1. FIG.

  Hereinafter, the configuration of the chemical heat storage type solar heat pump system according to the third embodiment will be described. In addition, the distribution direction of the heat medium at the time of heat storage is the same as that of the second embodiment, and the description will be made based on the distribution direction of the heat medium at the time of heat storage.

  The chemical heat storage solar heat pump system according to the third embodiment includes a heat exchanger 18 installed between the evaporator 4 and the expansion valve 3 in the heat pump cycle, and heat installed between the condenser 2 and the expansion valve 3. And an exchanger 30. Further, the flow path 31 through which the heat medium circulates again to the heat collection unit 10 through the heat collection unit 10, the heat exchanger 18, and the pump 14, the evaporator 4, the heat exchanger 6, and the heat exchanger. 30 and a flow path 32 through which the heat medium circulates again to the evaporator 4. A pump 29 is installed between the heat exchanger 30 and the evaporator 4 on the flow path 32.

  Further, a valve for joining the flow path 31 and the flow path 32 during heat radiation between the heat collecting unit 10 of the flow path 31 and the heat exchanger 18 and between the evaporator 4 and the heat exchanger 6 of the flow path 32. 28 is installed. Further, a flow path 33 for connecting the heat exchanger 18 and the pump 14 in the flow path 31 and between the pump 29 and the evaporator 4 in the flow path 32 is provided. A valve 34 is installed at the junction. The valve 34 is switched so that the heat medium flows through the flow path 33 during heat dissipation. Control means 42 for controlling the valves 34 and 28, the compressor 1, the expansion valve 3, and the pumps 14 and 29 is provided.

  An example of the first evaporator of the present invention corresponds to the evaporator 4 in the third embodiment, and the second evaporator of the present invention corresponds to the heat exchanger 18. An example of the heat medium flow path of the seventh aspect of the present invention corresponds to the flow path 31, the flow path 32, and the flow path 33 in Embodiment 3, and the example of the first flow path of the present invention is In the channel 31, an example of the second channel of the present invention corresponds to the channel 32, and an example of the third channel of the present invention corresponds to the channel 33.

  An example of the four-way valve of the present invention corresponds to the valve 28 of the present invention, and the third three-way valve of the present invention corresponds to the valve 34.

  The operation of the chemical heat storage type solar heat pump system of the third embodiment having the above configuration will be described below.

(Operation during heat storage)
First, in FIG. 7, the operation in the heat storage mode of the chemical heat storage solar heat pump system in the present embodiment will be described.

  At the time of heat storage, the flow path 31 and the flow path 32 do not merge by switching between the valve 28 and the valve 34, and the heat medium circulates in each flow path.

  When the compressor 1 is operated, heat is pumped up by the evaporator 4, and the refrigerant whose pressure is increased by the compressor 1 and heated is radiated by the condenser 2.

  In the heat storage material container 8, as in the first embodiment, a pair of water and an adsorbent for water as an example of the heat storage material are coupled and provided with heat from the condenser 2 to connect the pipe 17. The water is transported to the heat storage material container 7 via.

  On the other hand, in the heat storage material container 7 in the heat storage state, water is condensed and stored. The heat of condensation here is received by the heat exchanger 6 through the heat medium flowing through the flow path 32 by the pump 29.

  Here, heat input to the heat pump cycle is performed by circulating the flow path 31 and supplying the heat exchanger 18 with cooling heat of the solar cell panel 9 by the supplied heat medium. Thereafter, the heat medium moves to the heat collecting unit 10. The heat input to the heat pump cycle is also performed by supplying heat of the heat medium through the heat storage material container 7 to the evaporator 4 in the flow path 32 closed by the valves 34 and 28. . The heat medium cooled by supplying heat to the evaporator 4 passes through the flow path 32 and again performs a cycle of absorbing heat by the heat exchanger 6. By repeating the above operation, the heat storage material in the heat storage material container 8 is dehydrated, and water is condensed and stored in the heat storage material container 7 in the heat storage state.

  As shown in FIG. 7, in the third embodiment, when the refrigerant temperature in the refrigerant flow path 5 is relatively high at the outlet of the heat storage material container 8, the refrigerant flow path 5 is disposed downstream of the condenser 2. The temperature of the refrigerant entering the evaporator 4 can be lowered by providing the heat exchange unit 30 with the flow path 32 and exchanging heat with the heat medium. The portion for recovering the heat of condensation may include the connecting pipe 17. Further, when the refrigerant temperature is low, the heat exchange unit 30 may not be provided.

  Further, by adopting a flow path configuration so that the heat input of the evaporator 4 and the heat exchanger 18 is performed according to the temperature level and making the flow path 32 closed, the heat collection in the heat collecting section 10 is While the heat exchanger 18 is used as it is, the cold energy generated by the evaporator 4 is transmitted to the heat storage material container 7 by a heat medium, and the pressure difference between the heat storage material container 8 and the heat storage material container 7 is given by lowering the temperature as much as possible. Thus, it becomes possible to more smoothly transport water vapor from the heat storage material container 8 to the heat storage material container 7 in the heat storage state.

(Operation during heat dissipation)
Next, the operation during heat dissipation will be described based on FIG. The valve 34 and the valve 28 are switched by the control means 42, and the pump 14 and the pump 29 are operated. Here, the flow direction of the heat medium is the same as that during heat storage, and the heat medium is the heat collecting unit 10, the valve 28, the heat exchanger 6, the heat exchanger 30, the pump 29, the valve 34, the flow path 33, and the pump 14. Are circulated so as to return to the heat collecting section 10 in order.

  Similarly to the first and second embodiments, heat is transferred from the heat medium to the heat storage material container 7 through the heat exchanger 6, and the heat storage material container 7 is connected to the heat storage material container 7 via the connecting pipe 17. Water is transported to 8. And water adsorb | sucks to the thermal storage material in the thermal storage material container 8, and heat_generation | fever is performed with the adsorption heat. At that time, the heat medium is switched by the valve 28 so as to pass through the heat storage material container 7 in the heat storage state (the flow path 31 and the flow path 32 intersect with each other by the valve 28). By adopting such a configuration, the necessary amount of heat can be supplied from the heat collecting unit 10 to the heat storage material container 7, and heat output can be performed as in the first and second embodiments.

  As described in Embodiments 1 to 3 above, by storing the output from the heat pump by the adsorption / desorption reaction, a heat storage density of 310 kJ / kg due to sensible heat of water in a conventional hot water storage tank (when the temperature is raised by 75 ° C.) Compared with the above, since a high heat storage density of 750 kJ / kg (silica gel) can be realized, the heat storage section can be downsized.

  In Embodiments 1 to 3, silica gel is used as the adsorbent, but an inorganic porous material such as zeolite, a carbon-based porous material such as activated carbon, or a water-absorbing polymer material such as polyacrylamide is used. The same effect as described above may be obtained. Moreover, activated carbon, silica gel, and polyacrylamide are particularly effective for desorbing water from the adsorbent at a low temperature.

In addition, as the main reaction used for heat storage, the adsorption reaction of water to the adsorbent is used. However, the reaction is not necessarily limited to this. If a system having a large reaction heat per weight or volume of the reactant is selected. The effect similar to the above can be obtained. In addition, as other reactions, ammonia may be eliminated from ammonia complexes of inorganic salts such as calcium chloride, iron chloride, manganese chloride, and the exothermic reaction may be ammonia ammonia reaction of inorganic salts. It is also possible to use hydrogen instead of adsorbent and a hydrogen storage alloy composed of La, Mm, Mg, Ti, Fe, Ca, V or the like instead of the adsorbent.

  Also, in the heat storage reaction, when a gas product is generated from the heat storage material as a heat storage material in the heat storage state, in order to reduce the storage space, liquefy and condense, or form other substances and compounds, or adsorbents It is necessary to form a heat storage material in a heat storage state. In the first to third embodiments, when water is stored in the heat storage material container 7, the adsorbent is adsorbed and stored. The heat generated at the time of adsorption is transferred to the heat medium via the heat exchanger 6 and is used by the evaporator 4 for heat input to the heat pump cycle. Thus, it becomes possible to collect | recover and utilize the reaction heat which generate | occur | produces when forming the thermal storage material of a thermal storage state.

  In the first to third embodiments, a heat medium in which microcapsules containing paraffin are dispersed in water is used as the heat medium. When paraffin having a phase change temperature of about 30 ° C. is used, the solar cell panel 9 is exposed to solar radiation. Thus, the temperature rise is suppressed, and the power generation efficiency can be increased by 10% or more compared to the case of non-cooling.

  Paraffin is an example of a latent heat material, and microcapsules dispersed in water are an example of a fluid containing the latent heat material, and microcapsules containing other heat storage materials depending on conditions, or a latent heat material It is possible to use a slurry obtained by slurrying as is.

  In addition, conventionally, since the heat collected by the heat collector is heat-transferred using a working fluid such as an antifreeze liquid, the solar heat is transferred from the upstream side to the downstream side along the flow path of the working fluid. There was a temperature distribution in the battery panel. When solar panels with different temperatures are connected in parallel, the power generation voltage is close to that of a panel with a large maximum power and a low internal impedance, and only a power smaller than the maximum power can be extracted from a panel with a small maximum power. It was falling. However, by using the latent heat transfer mode as described above, the cooling temperature of the solar cell panel can be made uniform in the vicinity of the phase change temperature, which contributes to the suppression of the loss of solar cell power generation efficiency due to non-uniform cooling. Can do.

  Moreover, while making it possible to perform the cooling temperature of a solar cell uniformly, it becomes possible to use the utilization time slot | zone from evening to night as a heat source of the thermal storage material container 7 by a thermal storage effect | action. In addition, by using the heat source as a heat pump pumping heat source during a time when electricity such as midnight power is inexpensive, the temperature of the refrigerant is raised to a high temperature economically and efficiently, and the heat storage material is converted into a heat storage material in a heat storage state. It becomes possible.

  Further, in the first to third embodiments, the heat absorption of the heat storage material in the heat storage state is the amount of heat used for cooling for the purpose of improving the power generation efficiency of the solar cell during the day when the chemical heat storage method is used. Used for reaction. Thus, compared to the case where the conventional chemical heat storage system is used as it is, the heat storage material container 7 needs to cover the heat absorption when heat storage material such as water vaporizes and moves to the heat storage material container 8 with heat from the atmosphere. Therefore, it is not necessary to provide a large separate atmospheric heat exchanger in the heat storage material container 7, and a liquid-to-liquid heat exchanger 6 is sufficient. Therefore, it is possible to reduce the size of the heat storage material container 7 in the heat storage state. Moreover, since it is heat exchange between liquids, it becomes possible to perform the endothermic reaction accompanying the vaporization of the heat storage material in the heat storage state by heat supply more quickly, and the transport speed to the heat storage material container 8 is also increased.

  For example, when the heat exchange between the liquids is fixed to the atmospheric heat exchanger with respect to a certain heat exchange capacity, it is about 1/10. This volume is reduced to about ¼ of the total when heat storage of the heat storage material container 8, the heat storage material container 7, and the heat storage material container 7 in the heat storage state is performed by the atmospheric heat exchanger. It becomes possible.

  In addition, since it is possible to heat at a temperature obtained by collecting heat from the solar cell panel 9, it is possible to exert a vaporization promoting effect by increasing the temperature level particularly when the atmospheric temperature is low. .

  The flow rate of the heat medium flowing through the heat medium flow path can be controlled from the heat supply amount according to the temperature level by monitoring the atmospheric temperature and the like at that time. Further, it is possible to adjust the circulation power (pumps 14 and 29) according to the required heat amount.

  In addition, by using a heat storage fluid such as a microcapsule in which a latent heat storage material is included in a heat medium, a heat storage effect can be exhibited even in the early morning compared to a normal sensible heat medium such as water.

  Moreover, since the heat stored in the heat medium in the heat collecting unit 10 is circulated and used as it is in the heat storage material container 7 during the daytime hot water, the heat medium stored in the heat collecting unit 10 is used for cooling the solar cell panel 9. The amount of heat storage required for the heating may be less than or equal to the amount of heat medium, and the amount of heat medium can be reduced.

  Using the amount of heat collected by cooling the solar cell panel 9 with the above configuration, it is possible to form a compact heat storage device and to solve the problems of the conventional chemical heat storage system. Become. Furthermore, by improving the power generation efficiency of the solar cell by cooling the solar cell, and storing heat by operating the heat pump in a time zone where cheap power is generated by using a fluid containing a latent heat material, an economical and compact solar It becomes possible to provide a heat pump system.

  The program of the present invention is a program for causing a computer to execute the function of the control means of the above-described chemical heat storage solar heat pump system of the present invention, and is a program that operates in cooperation with the computer.

  The recording medium of the present invention is a recording medium carrying a program for causing a computer to execute all or a part of the functions of the control means of the above-described chemical heat storage solar heat pump system of the present invention. The read program is a recording medium for executing the function in cooperation with the computer.

  Further, the “function of the means” of the present invention means all or a part of the function of the means.

  Further, one usage form of the program of the present invention may be an aspect in which the program is recorded on a computer-readable recording medium and operates in cooperation with the computer.

Further, one usage form of the program of the present invention may be an aspect in which the program is transmitted through a transmission medium, read by a computer, and operated in cooperation with the computer.
The recording medium includes a ROM and the like, and the transmission medium includes a transmission medium such as the Internet, light, radio waves, sound waves, and the like.

  The computer of the present invention described above is not limited to pure hardware such as a CPU, but may include firmware, an OS, and peripheral devices.

  As described above, the configuration of the present invention may be realized by software or hardware.

  The chemical heat storage solar heat pump system of the present invention has an effect that can be installed and installed even if the installation space is smaller or the load resistance of the installation part is smaller, and as an energy-saving and economical solar heat pump system, etc. It is useful and can also be applied to uses such as industrial heating devices.

The figure showing the structure of the chemical thermal storage type solar heat pump system in Embodiment 1 of this invention, and the driving | running state at the time of thermal storage The figure showing the structure of the chemical thermal storage type solar heat pump system in Embodiment 1 of this invention, and the driving | running state at the time of heat dissipation The figure showing the structure of the modification of the chemical thermal storage type solar heat pump system in Embodiment 1 of this invention, and the operation state at the time of heat radiation. The figure showing the driving | running state in the heat storage mode after the structure of the modification of the chemical heat storage type solar heat pump system in Embodiment 1 of this invention and heat pump driving | operation completion | finish. The figure showing the structure of the chemical thermal storage type solar heat pump system in Embodiment 2 of this invention, and the driving | running state at the time of thermal storage The figure showing the structure of the chemical thermal storage type solar heat pump system in Embodiment 2 of this invention, and the operation state at the time of heat dissipation The figure showing the structure of the chemical thermal storage type solar heat pump system in Embodiment 3 of this invention, and the operation state at the time of thermal storage. The figure showing the structure of the chemical thermal storage type solar heat pump system in Embodiment 3 of this invention, and the driving | running state at the time of heat dissipation Schematic diagram of the operating principle of a general chemical heat storage system

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compressor 2 Condenser 3 Expansion valve 4 Evaporator 5 Refrigerant flow path 6 Heat exchanger 7 Heat storage material container 8 Heat storage material container 9 Solar cell panel 10 Heat collecting part 11 Flow path 12 Heated fluid flow path 13 Heat output port 14 Pump 15 Evaporator side flow path 16 Valve 17 Connecting pipe

Claims (14)

A first storage container of heat storage material;
First heating means for heating and decomposing or separating the heat storage material;
At the time of heat storage, cooling means for cooling at least one of the decomposed or separated heat storage material,
A second storage container for storing the heat storage material cooled by the cooling means to be in a heat storage state;
A second heating means for heating the heat storage material in the heat storage state during heat dissipation;
Heating means for recombining the heat storage material in the heat storage state to generate heat;
A heat pump cycle having a radiator, a compressor, an evaporator, and an expansion valve;
A solar panel,
Heat collecting means for collecting heat from the solar cell panel;
Heat exchange with the heat collecting means and the second heating means, and a heat medium flow path through which the heat medium flows,
A chemical heat storage solar heat pump system, wherein the first heating means is a radiator of the heat pump cycle.   The chemical heat storage solar heat pump system according to claim 1, wherein the heat medium is a fluid containing a latent heat material. The first heating means is a first heat exchanging means also serving as the heat generating means,
The chemical heat storage solar heat pump system according to claim 1, wherein the first storage container and the first heat exchange means are integrated. The second heating unit is a second heat exchange unit that also serves as the cooling unit,
The chemical heat storage solar heat pump system according to claim 1, wherein the second storage container and the second heat exchange means are integrated. The heat medium flow path is
A flow path connecting the heat collection means and the second heat exchange means,
It is possible to exchange heat with the evaporator of the heat pump cycle, and has an evaporator-side flow path that branches between the heat collecting means and the second heat exchange means of the heat medium flow path and merges again. ,
A three-way valve provided at the site of joining;
Control means for controlling the three-way valve so that the heat medium passes through the evaporator-side flow path during heat storage and the heat medium does not pass through the evaporator-side flow path during heat dissipation. 4. The chemical heat storage solar heat pump system according to 4. The three-way valve is a first three-way valve,
The heat medium flow path is
Bypassing the heat collecting means, one end is joined to the flow path, and the other end is joined to the evaporator side flow path, the heat collecting means bypass flow path,
A second three-way valve provided at a portion where the other end of the heat collecting means bypass flow path and the evaporator-side flow path meet;
The control means prevents the heat medium from flowing between the flow path or the evaporator side flow path and the previous heat collection means bypass flow path at the other end side of the heat collection means bypass flow path during heat radiation. The chemical heat storage type solar heat pump system according to claim 5, wherein the second three-way valve is controlled. The evaporator as a first evaporator,
The heat pump cycle further includes a second evaporator between the compressor and the expansion valve,
The heat medium flow path is
A first flow path installed so as to be able to exchange heat with the heat collecting means and the second evaporator;
A second flow path installed so as to be able to exchange heat with the heat exchange means B and the evaporator;
With respect to the flow direction of the heat medium, the first flow path upstream of the heat collecting means and downstream of the second evaporator, and the second flow path of the first flow path. A third flow path upstream of the evaporator and connecting to the downstream portion of the heat exchange means B;
The first flow path downstream of the heat collecting means and upstream of the second evaporator, and the second flow path downstream of the first evaporator and the heat exchange. A four-way valve provided in the upstream part of the means;
A three-way valve provided at a portion where the second flow path and the third flow path merge;
At the time of heat storage, the first flow path and the second flow path are closed, and at the time of heat dissipation, the heat medium is the heat collecting means, the four-way valve, the heat exchange means B, the three-way valve, the third The chemical heat storage type solar heat pump system according to claim 4, further comprising a control means for controlling the four-way valve and the three-way valve so as to sequentially pass through the flow path and the heat collecting means. The heat medium flow path is
The chemical heat storage type solar heat pump system according to claim 1, further comprising a heat generation means side flow path that bypasses the second heating means and is configured to exchange heat with the heat generation means. A heated fluid flow path through which a heated fluid is installed so as to be able to exchange heat with the heating means;
The heated fluid heating means for transferring heat from the heat medium to the heated fluid channel on the downstream side of the heat generating means on the basis of the flow direction of the heated fluid. Chemical heat storage solar heat pump system.   For heat storage, the heat pump cycle is operated to heat the first storage container using electric power in a time zone where the electricity rate is low, and the heat medium is made to flow from the second storage container to the heat medium. The chemical heat storage type solar heat pump system according to claim 1, wherein the system is performed by transferring heat to the solar heat pump. The chemical heat storage solar heat pump system according to claim 5,
The computer executes control means for controlling the three-way valve so that the heat medium passes through the evaporator-side heat medium flow path during heat storage and does not pass through the evaporator-side heat medium flow path during heat dissipation. Program to let you.   In the chemical heat storage solar heat pump system according to claim 6, at the time of heat dissipation, at the other end side of the heat collecting means bypass flow path, the flow path or between the evaporator side flow path and the heat collecting means bypass flow path is provided. A program for causing a computer to execute control means for controlling the second three-way valve so that the heat medium does not flow.   In the chemical heat storage solar heat pump system according to claim 7, the first flow path and the second flow path are closed at the time of heat storage, and at the time of heat dissipation, the heat medium is the heat collecting means, the four-way valve, A program for causing a computer to execute control means for controlling the four-way valve and the three-way valve so as to sequentially pass through the heat exchange means B, the three-way valve, the third flow path, and the heat collecting means. A recording medium carrying the program according to claim 11, which can be processed by a computer.

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