JP2012211752A - Thermoelectric cogeneration system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably convert solar energy into electric energy.SOLUTION: This thermoelectric cogeneration system includes: a light collection part 31 for collecting sunlight; a heat collection part 32 for converting the sunlight collected by the light collection part 31 into heat and collecting the converted heat; a reactor 33 which receives the heat collected by the heat collection part 32 and brings about a heat absorbing reaction to generate a reaction medium, and is supplied with the reaction medium and brings about a heat generating reaction to generate heat; a thermoelectric conversion part 13 receiving the heat generated in the reactor 33 and generating current according to a temperature difference between a high temperature part Hp and a low temperature part Lp; and a reaction medium feeding/discharging device for discharging the reaction medium generated in the reactor 33 from the reactor 33 and supplying the discharged reaction medium to the reactor 33. The generated reaction medium is discharged from the reactor 33 and the reaction medium is supplied to the reactor 33, thereby enabling the adjustment of a temperature of the reactor 33.

Description

  The present invention relates to a thermoelectric cogeneration system.

  2. Description of the Related Art Conventionally, a power generation unit that can convert solar energy into electric energy and use it has been provided.

  In the power generation unit, a heat accumulator is arranged adjacent to the thermoelectric conversion module, and solar energy is converted into electric energy by the thermoelectric conversion module while sunlight is radiating the thermoelectric conversion module. When heat is stored in the storage and sunlight does not irradiate the thermoelectric conversion module, the heat energy of the heat stored in the heat storage is converted into electrical energy by the thermoelectric conversion module, and electric energy is used (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 7-7976

  However, in the conventional power generation unit, since the temperature of the heat accumulator cannot be adjusted, solar energy cannot be converted into electric energy stably.

  An object of the present invention is to solve the problems of the conventional power generation unit and to provide a thermoelectric cogeneration system that can convert solar energy into electric energy in a stable manner.

  Therefore, in the thermoelectric cogeneration system of the present invention, a light collecting unit that collects sunlight, a heat collecting unit that converts the sunlight collected by the light collecting unit into heat, and collects the converted heat, and the collector An endothermic reaction is generated by receiving heat collected by the hot section, a reaction medium is generated, and a reaction medium is supplied to cause an exothermic reaction to generate heat, and heat generated in the reactor is generated. In order to discharge the reaction medium generated in the reactor and the thermoelectric conversion section that generates current according to the temperature difference between the high temperature section and the low temperature section, and to supply the discharged reaction medium to the reactor Reaction medium supply / discharge device.

  According to the present invention, in the thermoelectric cogeneration system, the light collecting unit that collects sunlight, the heat collecting unit that converts the sunlight collected by the light collecting unit into heat, and collects the converted heat, and the collector An endothermic reaction is generated by receiving heat collected by the hot section, a reaction medium is generated, and a reaction medium is supplied to cause an exothermic reaction to generate heat, and heat generated in the reactor is generated. In order to discharge the reaction medium generated in the reactor and the thermoelectric conversion section that generates current according to the temperature difference between the high temperature section and the low temperature section, and to supply the discharged reaction medium to the reactor Reaction medium supply / discharge device.

  In this case, in the reactor, an endothermic reaction occurs due to the heat collected by the heat collecting unit, a reaction medium is generated, an exothermic reaction is generated by supplying the reaction medium, heat is generated, and the reaction medium is generated in the reactor. Since the reaction medium is discharged from the reactor and the reaction medium is supplied to the reactor, the temperature of the reactor can be adjusted.

  Therefore, solar energy can be stabilized and converted into electric energy in the thermoelectric conversion part.

It is a conceptual diagram of the thermoelectric cogeneration system in the 1st Embodiment of this invention. It is a control block diagram of the thermoelectric cogeneration system in the 1st Embodiment of this invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in the thermal storage mode in the 1st Embodiment of this invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in the thermal radiation power generation mode in the 1st Embodiment of this invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in the direct electric power generation mode in the 1st Embodiment of this invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in the thermal storage electric power generation mode in the 1st Embodiment of this invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in the normal electric power generation mode in the 1st Embodiment of this invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in the direct thermal radiation power generation mode in the 1st Embodiment of this invention. It is a time chart showing transition of reactor temperature in a 1st embodiment of the present invention. It is a time chart showing transition of the reaction rate of the reactor in the 1st Embodiment of this invention. It is a time chart showing transition of the storage energy of the reactor in the 1st Embodiment of this invention. It is a time chart showing transition of the temperature in the water tank in the 1st Embodiment of this invention. It is a time chart showing transition of the quantity of the water in the water tank in a 1st embodiment of the present invention. It is a flowchart which shows operation | movement of the thermoelectric cogeneration system in the 2nd Embodiment of this invention. It is a 1st time chart showing transition of the reactor temperature in the 2nd Embodiment of this invention. It is a 2nd time chart showing transition of the reactor temperature in the 2nd Embodiment of this invention. It is a 3rd time chart showing transition of the reactor temperature in the 2nd Embodiment of this invention. It is a conceptual diagram of the thermoelectric cogeneration system in the 3rd Embodiment of this invention. It is a conceptual diagram of the thermoelectric cogeneration system in the 4th Embodiment of this invention. It is a time chart showing transition of heat storage energy.

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

  FIG. 1 is a conceptual diagram of a thermoelectric cogeneration system according to a first embodiment of the present invention.

  In the figure, reference numeral 11 denotes a thermoelectric cogeneration system. The thermoelectric cogeneration system 11 absorbs solar energy and receives heat from the solar energy absorption / storage unit 12 for storing heat and the solar energy absorption / storage unit 12. A thermoelectric conversion unit 13 that converts thermal energy into electric energy, an electric device Ld as a power consuming unit that is supplied with current generated in the thermoelectric conversion unit 13, and heat is consumed in the thermoelectric conversion unit 13. A heat recovery device 14 for recovering water, a water tank 15 as a reaction medium storage portion for storing and storing water as a reaction medium, a heat recovery device 16 for recovering heat in the water tank 15, etc. The solar energy absorption / heat storage unit 12 and the thermoelectric conversion unit 13 are connected through the first piping system 21 to thermoelectric conversion. 13 and the heat recovery device 14 via the second piping system 22, the solar energy absorption / heat storage unit 12 and the water tank 15 via the third piping system 23, the water tank 15 and the heat recovery device 16, Are connected via a fourth piping system 24. The water tank 15 and the third piping system 23 constitute a reaction medium supply / discharge device.

  The solar energy absorption / heat storage unit 12 is a light collecting unit 31 that collects sunlight, irradiated with sunlight collected by the light collecting unit 31, converts the sunlight into heat, and collects the converted heat. 32, and a reactor 33 or the like as a heat storage unit that stores and dissipates heat collected by the heat collection unit 32. The condensing unit 31 is a transparent material, and in the present embodiment, the heat collecting unit 32 is disposed outside the hermetically sealed casing 41 made of glass. The reactor 33 is formed in a space surrounded by the casing 32 and the casing 41. The housing 41 includes an outer wall and an inner wall, and a space between the outer wall and the inner wall is evacuated or filled with a rare gas to form a heat insulating structure. The inner wall of the inner wall is coated with a film that reflects long-wavelength infrared rays. A heat insulating material other than glass can be used for the housing 41, but it is preferable to use a transparent material, for example, glass, as the heat insulating material for the portion facing the light collecting portion 31.

  A pressure adjusting valve 43 as a pressure adjusting unit for adjusting the pressure in the reactor 33 is disposed at a predetermined location of the casing 41. By operating the pressure regulating valve 43 to adjust the pressure in the reactor 33 to be constant, the temperature of the reactor 33 (hereinafter referred to as “reactor temperature”) T is 250 [° C. corresponding to the amount of solar radiation. ] And a predetermined temperature of 300 [° C.] or less (hereinafter referred to as “heat storage temperature T1”), for example, 250 [° C.].

  The condensing part 31 is formed by arranging a plurality of lenses 35 in a matrix, and the surface of each lens 35 is covered with an antireflection film so that sunlight is not reflected. In addition, in this Embodiment, although the condensing part 31 and the heat collecting part 32 are arrange | positioned, only the heat collecting part 32 can be arrange | positioned.

  Further, on the surface of the heat collecting part 32, in order to increase the absorption efficiency of the infrared component of sunlight and reduce the heat loss due to radiation, a selective absorption film, for example, an infrared reflection preventing layer, an absorption / heat storage layer, and the like. A membrane consisting of is coated. The adsorption / heat storage layer can be formed by roughing the surface of a material, or can be formed by coating a film such as a nanotube black body or a metal black body.

The reactor 33 has a porous structure and is made of an inorganic material, such as magnesium oxide / water (MgO / H ₂ O), calcium chloride / methylamine (CaCl ₂ / CH ₃ NH ₂ ), calcium oxide / Heat storage material (chemical heat storage material) such as water (CaO / H ₂ O), calcium oxide / lead oxide / carbon dioxide (CaO / PbO / CO ₂ ), and magnesium oxide / water in this embodiment. Formed by.

In addition, when using magnesium oxide / water, calcium oxide / water, etc. as a heat storage material, when water uses calcium chloride / methylamine, methylamine is calcium oxide / lead oxide / carbon dioxide (CaO / PbO / When using CO ₂ ), carbon dioxide is the reaction medium.

Magnesium oxide / water is a reversible reaction between magnesium hydroxide and magnesium oxide,
Mg (OH) ₂ ⇔MgO + H ₂ O
To store and dissipate heat. Therefore, in the reactor 33, when magnesium hydroxide is heated by the heat collected by the heat collecting unit 32,
Mg (OH) ₂ → MgO + H ₂ O
In other words, an endothermic reaction occurs, magnesium oxide and water are generated, and heat is stored accordingly. In addition, water is produced | generated in the state of water vapor | steam.

When water is added to magnesium oxide,
MgO + H ₂ O → Mg (OH) ₂
That is, an exothermic reaction occurs, magnesium hydroxide is generated, heat is generated, and heat is released.

  In addition to the inorganic material, a heat storage material made of an adsorbent, a hydrogen storage alloy, an organic material, or the like can be used.

In the present embodiment, a bismuth tellurium (Bi ₂ Te ₃ ) thermoelectric module is used for the thermoelectric converter 13. The thermoelectric module includes a high temperature part Hp made of a metal plate, an n-type semiconductor, a p-type semiconductor, and a low temperature part Lp made of a metal plate, and the low temperature part Lp is heated by heating the high temperature part Hp and cooling the low temperature part Lp. The current flows in the order of the Lp metal plate, the n-type semiconductor, the high-temperature portion Hp metal plate, the p-type semiconductor, and the low-temperature portion Lp metal plate. In the present embodiment, for example, the power generation efficiency when the high temperature portion Hp is 250 [° C.] and the low temperature portion Lp is 30 [° C.] is 6 [%].

  The first piping system 21 includes a heat exchanger he1 embedded in the reactor 33, a heat exchanger he2 disposed in contact with the high temperature portion Hp, and the heat exchanger he1. , He2 are provided with on-off valves vb1, vb2 as first and second valves.

  The second piping system 22 includes a heat exchanger he3 disposed in the low temperature part Lp, the heat recovery device 14, and a heat exchanger he3 disposed between the heat recovery device 14 and the heat recovery device 14. 3. Open / close valves vb3 and vb4 as fourth valves are provided.

  Further, the third piping system 23 collects the water vapor generated by the endothermic reaction in the reactor 33 and supplies the water tank 15 with a water vapor discharge pipe 45 as a reaction medium discharge pipe for discharging to the water tank 15. A water supply pipe 46 serving as a reaction medium supply pipe for supplying the stored and stored water to the reactor 33, and a fifth position having a check valve structure disposed at a predetermined position in the water vapor discharge pipe 45. A pressure valve vb5 serving as a valve, an on-off valve vb6 serving as a sixth valve disposed at a predetermined position in the water supply pipe 46, and the like.

  In the steam discharge pipe 45, the pressure valve vb5 is opened by the pressure difference between the pressure upstream of the pressure valve vb5, that is, the pressure on the reactor 33 side, and the downstream side of the pressure valve vb5, that is, the pressure on the water tank 15 side. The water vapor flows into the water tank 15, but the steam discharge pipe 45 can be provided with an opening / closing valve instead of the pressure valve, and the opening / closing valve can be opened by a solenoid or the like to allow the water vapor to flow. . In the water supply pipe 46, the water in the water tank 15 is supplied to the reactor 33 by its own weight. However, a pump is provided and supplied to the reactor 33 by the pump. it can. In the present embodiment, the pressure in the reactor 33 is lowered by opening a pressure release valve (not shown) disposed in the housing 41, and the supply of water to the reactor 33 by its own weight is promoted. ing.

  A discharge portion 45a is formed in a portion of the casing 41 of the water vapor discharge pipe 45, and a plurality of holes (not shown) for collecting and discharging water vapor in the discharge portion 45a are formed in the discharge portion 45a. A supply part 46a is formed in a part of the casing 41 of the water supply pipe 46, and a plurality of holes (not shown) are formed in the supply part 46a for supplying water into the reactor 33 and ejecting it. The Spray nozzles are disposed in the holes of the supply unit 46a, and water is injected into the reactor 33 by the spray nozzles.

  The fourth piping system 24 is disposed in the water tank 15, and heat exchanger he4 for condensing the water vapor discharged to the water tank 15 into water, the heat exchanger he4 and the heat exchanger On-off valves vb7 and vb8 are provided as seventh and eighth valves disposed between the collecting device 16 and the recovery device 16.

  Next, the control device of the thermoelectric cogeneration system 11 having the above configuration will be described.

  FIG. 2 is a control block diagram of the thermoelectric cogeneration system according to the first embodiment of the present invention.

  In the figure, 50 is a control unit that controls the entire thermoelectric cogeneration system 11, 51 is an operation unit that includes operation elements such as keys and buttons not shown, and 52 is a display that includes display elements such as LED screens that are not shown. Part.

  The control unit 50 includes a CPU as a calculation unit (not shown) that functions as a computer, and a memory such as a RAM and a ROM as a storage device (not shown). The operation unit 51 can also be formed by a touch panel, and in that case, also functions as a display unit.

  Reference numeral 53 denotes a solar radiation amount sensor serving as a solar radiation amount detection unit for detecting the solar radiation amount, and reference numeral 53 denotes a solar radiation amount sensor disposed in the light collector 31 for detecting the temperature of the light collector 31. A condenser temperature sensor 55 serving as a temperature detector for light, 55 is disposed in the reactor 33, and a reactor temperature sensor 56 serving as a temperature detector for heat storage / radiation for detecting the reactor temperature T, A reactor pressure sensor 58, which is disposed in the reactor 33 and detects the pressure in the reactor 33 as a pressure detector for heat storage and heat dissipation, 58 is disposed in the high temperature portion Hp and detects the temperature of the high temperature portion Hp. A high-temperature part temperature sensor 59 serving as a first thermoelectric temperature detecting unit is disposed in the low-temperature part Lp, and a low-temperature part temperature serving as a second thermoelectric temperature detecting unit for detecting the temperature of the low-temperature part Lp. Sensor, 43 is a pressure regulating valve, 60 is consumed by the electric device Ld A power meter 61 as a power detector for detecting the power to be detected, 61 is a steam flow meter as a first flow rate detector disposed at a predetermined location of the steam discharge pipe 45 and detects the flow rate of water vapor, 62 is the above-mentioned A water flow meter 63 as a second flow rate detector that is disposed at a predetermined location of the water supply pipe 46 and detects the flow rate of water, 63 is disposed in the water tank 15, and the temperature Tw in the water tank 15 A tank temperature sensor as a temperature detection unit for the reaction medium for detecting the reaction medium, 64 is disposed in the water tank 15, and a tank pressure sensor as a pressure detection unit for the reaction medium for detecting the pressure Pw in the water tank 15, vb1 to vb4 and vb6 to vb8 are open / close valves, and vb5 is a pressure valve. In the present embodiment, the solar radiation amount sensor 53 detects the solar radiation amount, but can detect the presence or absence of solar radiation.

  In the present embodiment, when the operator operates the operation unit 51, the heat storage mode as the first mode, the heat radiation power generation mode as the second mode, the direct power generation mode as the third mode, When a predetermined mode is selected from the heat storage power generation mode as the fourth mode, the normal power generation mode as the fifth mode, and the direct heat radiation power generation mode as the sixth mode, the pressure adjustment valve 43 and the on-off valve vb1 ˜vb4 and vb6 are opened and closed, and the thermoelectric cogeneration system 11 is operated in the selected mode. The operator can also operate the thermoelectric cogeneration system 11 in each mode by manually opening and closing the pressure regulating valve 43 and the on-off valves vb1 to vb4 and vb6.

  Next, modes for operating the thermoelectric cogeneration system 11 will be described.

  FIG. 3 shows the operation of the thermoelectric cogeneration system in the heat storage mode in the first embodiment of the present invention, and FIG. 4 shows the operation of the thermoelectric cogeneration system in the heat dissipation power generation mode in the first embodiment of the present invention. FIG. 5 is a diagram showing the operation of the thermoelectric cogeneration system in the direct power generation mode in the first embodiment of the present invention, and FIG. 6 is the thermoelectric cogeneration in the thermal storage power generation mode in the first embodiment of the present invention. FIG. 7 is a diagram showing the operation of the system, FIG. 7 is a diagram showing the operation of the thermoelectric cogeneration system in the normal power generation mode in the first embodiment of the present invention, and FIG. 8 is the direct heat radiation power generation in the first embodiment of the present invention. It is a figure which shows operation | movement of the thermoelectric cogeneration system in mode. In addition, each said figure is simplified.

  First, when the operator operates the operation unit 51 to select the heat storage mode, the heat storage heat treatment means as the mode setting processing means (not shown) of the control unit 50 performs the heat treatment as the mode setting process, and the pressure regulating valve 43. The opening / closing valves vb1 to vb4, vb6 are closed, the opening / closing valves vb7, vb8 are opened, and the thermoelectric cogeneration system 11 is operated in the heat storage mode. In the heat storage mode, the sunlight collected by the light collecting unit 31 is irradiated to the heat collecting unit 32 (arrow A in FIG. 3), and the sunlight irradiated to the heat collecting unit 32 is converted into heat and converted. Heat is transferred to the reactor 33 and the reactor 33 is heated. As a result, the reactor temperature T is maintained at the heat storage temperature T1.

And the reactor 33 is made to function as a heat storage material, and magnesium hydroxide is heated in the reactor 33,
Mg (OH) ₂ → MgO + H ₂ O
Endothermic reaction occurs, and magnesium oxide and high-temperature water are generated in the state of water vapor. Thereby, heat storage is performed in the reactor 33.

  The generated water vapor is collected by the discharge unit 45a and discharged to the water tank 15 (arrow B in FIG. 3). At this time, the pressure valve vb5 is opened by the pressure of water vapor. In addition, since the reactor 33 has a porous structure, water vapor is circulated through the reactor 33 and is smoothly collected in the discharge part 45a.

  The water vapor discharged to the water tank 15 is cooled and condensed by water (cooling water) as a heat recovery medium by the heat exchanger he4, and when the pressure of the reactor 33 is 1 atm, the water vapor is 100 [° C.]. Become water. The cooling water is heated as the water vapor condenses, and is sent to the heat recovery device 16, where heat is recovered. In addition, the heat | fever collect | recovered in the heat recovery apparatus 16 can be stored in a building frame, a floor, etc. as needed, and can be utilized for heating. In the heat recovery device 16, a refrigerant can be used as a heat recovery medium.

  In this case, the heat storage means maintains the pressure in the reactor 33 at a constant value by adjusting the opening of the pressure regulating valve 43. Thereby, the pressure of water vapor becomes constant, and the heat of condensation in the water tank 15 becomes constant, so that the heat recovery device 16 can recover heat at a constant temperature.

  When the operator operates the operation unit 51 to select the heat radiation power generation mode, the heat radiation power generation processing means as the mode setting processing means performs the heat radiation power generation processing as the mode setting processing, and the on-off valves vb1 to vb4, b6 is opened, the on-off valves vb7 and vb8 are closed, and the thermoelectric cogeneration system 11 is operated in the heat radiation power generation mode. In the heat radiation power generation mode, the water in the water tank 15 is sent to the supply unit 46a through the water supply pipe 46 (arrow C in FIG. 4), and supplied from the supply unit 46a into the reactor 33 and ejected.

The reactor 33 is caused to function as a heat storage material, and in the reactor 33, water is added to magnesium oxide,
MgO + H ₂ O → Mg (OH) ₂
Exothermic reaction occurs, magnesium hydroxide is generated, and heat is generated.

  The heat generated in the reactor 33 is transferred to water as a heat transfer medium by the heat exchanger he1, transferred to the high temperature part Hp by the heat exchanger he2, and heats the high temperature part Hp. Moreover, the low temperature part Lp is cooled with the cooling water as a heat recovery medium by the heat exchanger he3. And this cooling water is heated by the low temperature part Lp, is sent to the heat recovery apparatus 14 (arrow D in FIG. 4), and heat is recovered in the heat recovery apparatus 14. In addition, the heat recovered in the heat recovery device 14 can be stored in a building frame, a floor, or the like as needed, similarly to the heat recovery device 16, and used for heating. Further, in the heat recovery device 16, a refrigerant can be used as a heat recovery medium, or water heated to a predetermined temperature by geothermal heat can be used.

  And when the high temperature part Hp is heated and the low temperature part Lp is cooled, electric power generation is performed in the thermoelectric conversion part 13, and a current corresponding to the temperature difference between the temperature of the high temperature part Hp and the temperature of the low temperature part Lp is generated. It is done. Therefore, the current can be sent to the electric device Ld, and electric power can be used in the electric device Ld.

  In this case, if the amount of water supplied to the reactor 33 or the flow rate is made constant by adjusting the opening degree of the on-off valve vb6, the heat dissipation power generation processing means will adjust the pressure in the reactor 33 (water vapor partial pressure). Becomes constant. Therefore, since the reactor temperature T is maintained at the heat storage temperature T1, the temperature difference between the temperature of the high temperature portion Hp and the temperature of the low temperature portion Lp can be maintained constant. As a result, power generation by the thermoelectric conversion unit 13 can be performed in a highly efficient temperature range. The heat radiation power generation processing means can adjust the opening degree of the pressure adjusting valve 43 in conjunction with adjusting the opening degree of the on-off valve vb6.

  When the operator operates the operation unit 51 to select the direct power generation mode, the direct power generation processing unit as the mode setting processing unit performs the direct power generation processing as the mode setting processing, and opens the on-off valves vb1 to vb4. Open and close the on-off valves vb6 to vb8, and operate the thermoelectric cogeneration system 11 in the direct power generation mode. In the direct power generation mode, the sunlight collected by the light collecting unit 31 is irradiated to the heat collecting unit 32, the sunlight irradiated to the heat collecting unit 32 is converted into heat, and the converted heat is supplied to the reactor 33. Although transmitted, the reactor 33 is caused to function as a heat transfer member, neither endothermic reaction nor exothermic reaction occurs, and the transmitted heat is directly transmitted to the heat exchanger he1 (arrow E in FIG. 5). .

  And the heat transmitted to heat exchanger he1 is transmitted to the water as a heat transfer medium, is transmitted to high temperature part Hp by heat exchanger he2, and heats high temperature part Hp. Moreover, the low temperature part Lp is cooled with the cooling water as a heat recovery medium by the heat exchanger he3. The cooling water is heated by the low temperature part Lp, sent to the heat recovery device 14, and heat is recovered in the heat recovery device 14.

  And when the high temperature part Hp is heated and the low temperature part Lp is cooled, electric power generation is performed in the thermoelectric conversion part 13, and a current corresponding to the temperature difference between the temperature of the high temperature part Hp and the temperature of the low temperature part Lp is generated. It is done. Therefore, the current can be sent to the electric device Ld, and electric power can be used in the electric device Ld.

  In this case, since the reactor 33 has a porous structure, the water vapor is circulated through the reactor 33 and smoothly transfers heat.

  When the operator operates the operation unit 51 to select the heat storage power generation mode, the heat storage power generation processing means as the mode setting processing means performs the heat storage power generation processing as the mode setting processing, and the on-off valves vb1 to vb4, vb7 and vb8 are opened, and the thermoelectric cogeneration system 11 is operated in the heat storage power generation mode. In the heat storage power generation mode, the light collecting unit 31 irradiates the collected sunlight to the heat collecting unit 32 (arrow F in FIG. 6), and the heat collecting unit 32 converts the irradiated sunlight into heat, and converts the converted heat. Is transferred to the reactor 33.

The reactor 33 functions as a heat storage material and a heat transfer member. In the reactor 33, magnesium hydroxide is added by a predetermined amount of heat transferred from the heat collecting section 32, in this embodiment, 50%. Is heated,
Mg (OH) ₂ → MgO + H ₂ O
Endothermic reaction occurs, and magnesium oxide and high-temperature water are generated in the state of water vapor. Thereby, heat storage is performed in the reactor 33.

  The generated water vapor is collected in the discharge part 45a and discharged to the water tank 15 (arrow G in FIG. 6). At this time, the pressure valve vb5 is opened by the pressure of water vapor.

  And the water vapor | steam discharged | emitted by the water tank 15 is cooled with the cooling water as a heat recovery medium with the heat exchanger he4, is condensed, and turns into 100 [degreeC] water. The cooling water is heated as the water vapor condenses, and is sent to the heat recovery device 16, where heat is recovered.

  Further, since the reactor 33 also functions as a heat transfer member, the remainder of the heat transferred from the heat collecting section 32, that is, 50 [%] is transferred as it is to the heat exchanger he1 (arrow in FIG. 6). H).

  And the heat transmitted to heat exchanger he1 is transmitted to the water as a heat transfer medium, is transmitted to high temperature part Hp by heat exchanger he2, and heats high temperature part Hp. Moreover, the low temperature part Lp is cooled with the cooling water as a heat recovery medium by the heat exchanger he3. The cooling water is heated by the low temperature part Lp, sent to the heat recovery device 14, and heat is recovered in the heat recovery device 14.

  And when the high temperature part Hp is heated and the low temperature part Lp is cooled, electric power generation is performed in the thermoelectric conversion part 13, and a current corresponding to the temperature difference between the temperature of the high temperature part Hp and the temperature of the low temperature part Lp is generated. It is done. Therefore, the current can be sent to the electric device Ld, and electric power can be used in the electric device Ld.

  In this case, the heat storage power generation processing means adjusts the opening degree of the on-off valves vb1 and vb2, and sets the amount of water flowing through the heat exchangers he1 and he2, so that the heat transferred from the heat collection unit 32 is Adjust the rate of heat to heat the magnesium hydroxide.

  When the operator operates the operation unit 51 to select the normal power generation mode, the normal power generation processing unit as the mode setting processing unit performs the normal power generation processing as the mode setting processing, and opens the on-off valves vb1 to vb4. Open and close the on-off valves vb6 to vb8, and operate the thermoelectric cogeneration system 11 in the normal power generation mode. In the normal power generation mode, the sunlight collected by the light collecting unit 31 is irradiated to the heat collecting unit 32 (arrow I in FIG. 7), and the sunlight irradiated to the heat collecting unit 32 is converted into heat and converted. However, neither the endothermic reaction nor the exothermic reaction takes place, and the heat transferred to the reactor 33 is already transmitted to the reactor 33. The heat stored in the reactor 33 is transferred to the heat exchanger he1 (arrow J in FIG. 7).

  And the heat transmitted to heat exchanger he1 is transmitted to the water as a heat transfer medium, is transmitted to high temperature part Hp by heat exchanger he2, and heats high temperature part Hp. Moreover, the low temperature part Lp is cooled with the cooling water as a heat recovery medium by the heat exchanger he3. The cooling water is heated by the low temperature part Lp, sent to the heat recovery device 14, and heat is recovered in the heat recovery device 14.

  And when the high temperature part Hp is heated and the low temperature part Lp is cooled, electric power generation is performed in the thermoelectric conversion part 13, and a current corresponding to the temperature difference between the temperature of the high temperature part Hp and the temperature of the low temperature part Lp is generated. It is done. Therefore, the current can be sent to the electric device Ld, and electric power can be used in the electric device Ld.

  In this case, since the reactor 33 has a porous structure, the water vapor is circulated through the reactor 33 and smoothly transfers heat.

  When the operator operates the operation unit 51 to select the direct heat radiation power generation mode, the direct heat radiation power generation processing means as the mode setting processing means performs the direct heat radiation power generation processing as the mode setting processing, and the on-off valve vb1. ˜vb4 and vb6 are opened, and the thermoelectric cogeneration system 11 is operated in the direct heat radiation power generation mode. In the direct heat radiation power generation mode, the sunlight collected by the light collecting unit 31 is irradiated to the heat collecting unit 32 (arrow K in FIG. 8), and the sunlight irradiated to the heat collecting unit 32 is converted into heat and converted. The generated heat is transmitted to the reactor 33, but the reactor 33 is caused to function as a heat storage material and a heat transfer member, no endothermic reaction occurs, and the transferred heat is transferred to the heat exchanger he1 as it is.

  Further, the water in the water tank 15 is sent to the supply unit 46a through the water supply pipe 46 (arrow L in FIG. 8), and supplied from the supply unit 46a into the reactor 33 and ejected.

Since the reactor 33 also functions as a heat storage material, water is added to magnesium oxide in the reactor 33,
MgO + H ₂ O → Mg (OH) ₂
Exothermic reaction occurs, magnesium hydroxide is generated, and heat is generated.

  The heat transferred from the heat collecting part 32 to the reactor 33 and the heat generated in the reactor 33 are transferred to water as a heat transfer medium by the heat exchanger he1, transferred to the high temperature part Hp by the heat exchanger he2, The high temperature part Hp is heated. Moreover, the low temperature part Lp is cooled with the cooling water as a heat recovery medium by the heat exchanger he3. The cooling water is heated by the low temperature part Lp, sent to the heat recovery device 14 (arrow M in FIG. 8), and heat is recovered in the heat recovery device 14.

  And when the high temperature part Hp is heated and the low temperature part Lp is cooled, electric power generation is performed in the thermoelectric conversion part 13, and a current corresponding to the temperature difference between the temperature of the high temperature part Hp and the temperature of the low temperature part Lp is generated. It is done. Therefore, the current can be sent to the electric device Ld, and electric power can be used in the electric device Ld.

  In this case, when the amount of water supplied to the reactor 33 or the flow rate is set according to the amount of solar radiation by adjusting the opening degree of the on-off valve vb6, the direct heat radiation power generation processing means The pressure (water vapor partial pressure) becomes constant. Therefore, since the reactor temperature T is maintained at the heat storage temperature T1, the temperature difference between the high temperature portion Hp and the low temperature portion Lp can be maintained. As a result, power generation by the thermoelectric conversion unit 13 can be performed in a highly efficient temperature range. In addition, the opening degree of the pressure adjustment valve 43 can be adjusted together with adjusting the opening degree of the on-off valve vb6.

  Further, the direct heat radiation power generation processing means adjusts the opening degree of the on-off valve vb6 to thereby obtain a predetermined amount of heat transferred to the high temperature portion Hp, in this embodiment, 50 [%]. 32, and the remaining heat is the heat generated in the reactor 33.

  Next, the state of the reactor 33 and the water tank 15 when the operator selects the heat storage power generation mode and then selects the heat radiation power generation mode will be described.

  FIG. 9 is a time chart showing the transition of the reactor temperature in the first embodiment of the present invention, FIG. 10 is a time chart showing the transition of the reaction rate of the reactor in the first embodiment of the present invention, FIG. Is a time chart showing the transition of the stored energy of the reactor in the first embodiment of the present invention, FIG. 12 is a time chart showing the transition of the temperature in the water tank in the first embodiment of the present invention, FIG. These are time charts showing the transition of the amount of water in the water tank in the first embodiment of the present invention.

  When the operator selects the heat storage power generation mode and the light collection by the light collecting unit 31 is started at the timing t0, the heat collecting unit 32 converts the irradiated sunlight into heat, and converts the converted heat. The reaction is transmitted to the reactor 33 and the reactor 33 is heated. As a result, as shown in FIG. 9, at the timing t1, the reactor temperature T becomes the heat storage temperature T1, for example, 250 [° C.], and then is maintained at 250 [° C.].

  During this time, magnesium hydroxide is heated in the reactor 33 to cause an endothermic reaction, and magnesium oxide and water are generated. Thereby, heat storage is performed in the reactor 33. Therefore, as shown in FIG. 10, the ratio of the endothermic reaction in the magnesium hydroxide, that is, the reaction rate γ of the reactor 33 increases with time, and as shown in FIG. The energy stored in the reactor 33, that is, the heat storage energy Q, increases with the passage of time.

  Further, the water vapor generated in the reactor 33 is discharged to the water tank 15 and condensed, and the temperature Tw of the water in the water tank 15 is maintained at 100 [° C.] as shown in FIGS. The amount S of water in the tank 15 increases with time.

  As described above, when the reactor temperature T reaches 250 [° C.] at the timing t1, power generation by the thermoelectric conversion unit 13 is started, the endothermic reaction continues, and the reaction rate γ increases with time. . During this time, the rate of change of the heat storage energy Q decreases as power generation is performed.

  Then, at the timing t2, the endothermic reaction of all the magnesium hydroxide is completed, and as shown in FIG. 10, when the reaction rate γ reaches 100 [%], as shown in FIG. The amount of water S is maximized. Along with this, the heat storage power generation mode ends.

  Subsequently, when the operator selects the heat radiation power generation mode, the supply of water in the water tank 15 to the reactor 33 is started. In the reactor 33, water is added to the magnesium oxide to cause an exothermic reaction, and hydroxylation occurs. Magnesium is produced. Thereby, heat dissipation is performed in the reactor 33.

  Therefore, as shown in FIG. 13, the amount S of water in the water tank 15 decreases with time, and as shown in FIG. 10, the reaction rate γ decreases with time. During this time, as power generation is performed, the heat storage energy Q decreases with time as shown in FIG.

  Then, at the timing t3, the amount S of water in the water tank 15 becomes 0 [l] and the exothermic reaction of all the magnesium oxides is completed, and the reaction rate γ is 0 [%] as shown in FIG. 〕become. Along with this, the heat radiation power generation mode ends.

  Thus, in the present embodiment, in the reactor 33, an endothermic reaction occurs due to the heat collected by the heat collecting unit 32, water is generated, water is supplied, an exothermic reaction occurs, and heat is generated. At the same time, water generated in the reactor 33 is discharged from the reactor 33 and water is supplied to the reactor 33, so that the temperature of the reactor 33 can be adjusted.

  Therefore, solar energy can be stabilized and converted into electric energy in the thermoelectric converter 13.

  By the way, as described above, when the heat of the reactor 33 is transferred to the high temperature part Hp via the heat exchangers he1 and he2, in the thermoelectric conversion part 13, the temperature of the high temperature part Hp and the temperature of the low temperature part Lp A current corresponding to the temperature difference is generated, the current is sent to the electric device Ld, and electric power is used in the electric device Ld.

  Therefore, when predetermined electric power is consumed in the electric device Ld, it is necessary to transfer necessary electric power, that is, heat corresponding to the required electric power from the reactor 33 to the high temperature part Hp.

  Therefore, a second embodiment of the present invention in which the thermoelectric cogeneration system 11 is operated in the normal power generation mode, the heat radiation power generation mode, the direct power generation mode, and the direct heat radiation power generation mode according to the required power will be described. In addition, about the thing which has the same structure as 1st Embodiment, the same code | symbol is provided and the effect of the same embodiment is used about the effect of the invention by having the same structure.

  FIG. 14 is a flowchart showing the operation of the thermoelectric cogeneration system according to the second embodiment of the present invention. FIG. 15 is a first time chart and graph showing the transition of the reactor temperature according to the second embodiment of the present invention. 16 is a second time chart showing changes in the reactor temperature in the second embodiment of the present invention, and FIG. 17 is a third time chart showing changes in the reactor temperature in the second embodiment of the present invention. It is.

  First, when the operation of the thermoelectric cogeneration system 11 is started, a reactor information acquisition processing unit (not shown) of the control unit 50 performs a reactor information acquisition process and reads (acquires) the reactor temperature T and the solar radiation amount. (Step S1). Subsequently, a heat storage temperature setting processing unit (not shown) of the control unit 50 performs a heat storage temperature setting process, refers to a heat storage temperature map formed in the ROM, reads out a heat storage temperature T1 corresponding to the amount of solar radiation, and stores the heat storage temperature. A temperature T1 is set (step S2). In the heat storage temperature map, the amount of solar radiation and the heat storage temperature T1 (in the range of 250 [° C.] or more and 300 [° C.] or less) are associated with each other. The heat storage temperature T1 is recorded so as to decrease as the amount of solar radiation decreases. The first reference temperature is configured by the heat storage temperature T1.

  And the heat storage temperature setting processing means changes the pressure in the reactor 33 as the heat storage unit by adjusting the opening of the pressure adjustment valve 43 as the pressure adjustment unit, and the reactor temperature T becomes the heat storage temperature T1. Thus, when the heat storage temperature T1 is high, the pressure in the reactor 33 is increased, and when the heat storage temperature T1 is low, the pressure in the reactor 33 is decreased.

  Subsequently, as shown in FIG. 15, when the reactor temperature T reaches the heat storage temperature T <b> 1 at the timing t <b> 11, the heat storage means performs heat storage to adjust the opening of the pressure regulating valve 43, and The on-off valves vb1 to vb4 and vb6 as the fourth and sixth valves are closed, the on-off valves vb7 and vb8 as the seventh and eighth valves are opened, and the thermoelectric cogeneration system 11 is operated in the heat storage mode ( Step S3). In the heat storage mode, the sunlight collected by the light collecting unit 31 is irradiated to the heat collecting unit 32, the sunlight irradiated to the heat collecting unit 32 is converted into heat, and the converted heat is transmitted to the reactor 33. And the reactor 33 is heated.

  At this time, since the pressure valve vb5 as the fifth valve is opened by the pressure of water vapor, the heat storage means does not adjust the opening degree of the pressure valve vb5, but the opening degree of the on-off valves vb7, vb8, It adjusts according to the opening degree of the pressure valve vb5. For this purpose, the heat storage means reads the flow rate of water vapor detected by the water vapor flow meter 61 as the first flow rate detection unit, and adjusts the opening of the on-off valves vb7 and vb8 according to the flow rate of water vapor.

  Therefore, an endothermic reaction occurs in the reactor 33, and the reactor temperature T is maintained at the heat storage temperature T1 as shown in FIG. In addition, even after the endothermic reaction of all the magnesium hydroxide is completed at the timing t12, the heat collecting unit 32 continues to convert the irradiated sunlight into heat, so that the reactor temperature T rises from the heat storage temperature T1. Get higher.

  At timing t13, when the reactor temperature T reaches the limit temperature of the thermoelectric cogeneration system 11, that is, the system limit temperature Tmax, a power request determination processing unit (not shown) of the control unit 50 performs a power request determination process. The power detected by the wattmeter 60 serving as a power detection unit is read, and whether or not power is required for the thermoelectric conversion unit 13 by the electric device Ld serving as a power consumption unit, that is, whether there is a power request. Judgment is made (step S4).

  When there is a power request, direct power generation determination processing means (not shown) of the control unit 50 performs direct power generation determination processing to determine whether the thermoelectric cogeneration system 11 can be operated in the direct power generation mode (step S5, S6).

  Therefore, the direct power generation determination processing means includes the heat storage temperature T1, the temperature Tw in the tank 15 as the reaction medium storage unit detected by the tank temperature sensor 63 as the reaction medium temperature detection unit, and the tank pressure sensor 64. The pressure Pw in the tank 15 detected by the above is read, and the heat storage energy Q in the reactor 33 is calculated based on the heat storage temperature T1, the temperature Tw, and the pressure Pw. Then, the direct power generation determination processing means does not cause any endothermic reaction or exothermic reaction in the reactor 33 based on the heat storage energy Q and the amount of solar radiation, and only transfers the transmitted heat to the heat exchanger he1 as it is. Thus, it is determined whether or not the thermoelectric cogeneration system 11 can be operated in the direct power generation mode depending on whether or not the electric power required by the electric device Ld can be generated in the thermoelectric converter 13.

  For example, when the heat storage energy Q is 50% or more of the rated heat storage energy capacity of the reactor 33 determined by the weight of magnesium hydroxide in the reactor 33 and the solar radiation amount is sufficiently large, the direct The power generation determination processing unit determines that the thermoelectric cogeneration system 11 can be operated in the direct power generation mode.

  In the present embodiment, the direct power generation determination processing means determines whether or not the thermoelectric cogeneration system 11 can be operated in the direct power generation mode based on the heat storage energy Q and the amount of solar radiation. However, instead of the heat storage energy Q, the thermoelectric cogeneration system 11 can be operated in the direct power generation mode based on the amount of power required by the electrical equipment Ld (hereinafter referred to as “required power amount”) and the amount of solar radiation. You can determine whether you can. In that case, the required power amount is calculated based on the power detected by the power meter 60 by the required power determination processing means.

  When the thermoelectric cogeneration system 11 cannot be operated in the direct power generation mode, the normal power generation processing unit performs normal power generation processing, opens the on-off valves vb1 to vb4, closes the on-off valves vb6 to vb8, and The generation system 11 is operated in the normal power generation mode (step S7). During this time, when the amount of solar radiation is not sufficient, power generation is performed mainly using the heat stored in the reactor 33, so that the reactor temperature T is lowered as shown in FIG.

  Subsequently, a reactor temperature determination processing unit (not shown) of the control unit 50 performs a reactor temperature determination process to determine whether or not the reactor temperature T is higher than the heat storage temperature T1 (step S8).

  Then, as shown in FIG. 16, when the reactor temperature T becomes the heat storage temperature T <b> 1 at the timing t <b> 14, the heat dissipation power generation processing unit performs the heat dissipation power generation processing, and the heat storage energy Q and the amount of solar radiation are not sufficient. Then, the on-off valves vb1 to vb4 and vb6 are opened, the on-off valves vb7 and vb8 are closed, and the thermoelectric cogeneration system 11 is operated in the heat radiation power generation mode (step S9).

  Therefore, an exothermic reaction occurs in the reactor 33, and the reactor temperature T is maintained at the heat storage temperature T1. When the exothermic reaction of all the magnesium oxides ends at timing t15, the heat dissipation power generation processing unit ends the operation of the thermoelectric cogeneration system 11.

  In the direct power generation determination process, when it is determined that the thermoelectric cogeneration system 11 can be operated in the direct power generation mode, the direct power generation processing unit performs the direct power generation process and opens the on-off valves vb1 to vb4. Then, the on-off valves vb6 to vb8 are closed, and the thermoelectric cogeneration system 11 is operated in the direct power generation mode (step S10). Therefore, neither an endothermic reaction nor an exothermic reaction occurs in the reactor 33, and the heat converted by the heat collecting unit 32 is transmitted to the reactor 33, and electric power is generated in the thermoelectric conversion unit 13 by the transmitted heat. During this time, as shown in FIG. 17, the reactor temperature T is lowered until the timing t16.

  When the solar radiation amount becomes insufficient while the thermoelectric cogeneration system 11 is operated in the direct power generation mode, the thermal storage power generation processing means performs the thermal storage power generation processing, opens the on-off valves vb1 to vb8, and The generation system 11 can be operated in the heat storage power generation mode.

  Subsequently, the reactor temperature determination processing means determines whether or not the reactor temperature T is higher than the temperature at which heat release is preferably started, that is, the heat release start temperature T2 (step S11). The heat release start temperature T2 is set lower than the heat storage temperature T1, and the heat release start temperature T2 constitutes the second reference temperature.

  As shown in FIG. 17, when the reactor temperature T reaches the heat release start temperature T2 at the timing t16, the direct heat release power generation processing means performs the direct heat release power generation process, and the heat storage energy Q and the amount of solar radiation are sufficient. Therefore, the on-off valves vb1 to vb4 and vb6 are opened, and the thermoelectric cogeneration system 11 is operated in the direct heat radiation power generation mode (step S12).

  Accordingly, the heat converted by the heat collecting unit 32 is transmitted to the reactor 33, and an exothermic reaction occurs in the reactor 33, and the heat transmitted to the reactor 33 and the heat generated by the exothermic reaction, Electric power is generated in the thermoelectric converter 13.

  In this case, when the direct heat dissipation power generation process is started, the reactor temperature T can be set to the heat release start temperature T2 or higher, and when the reactor temperature T becomes lower and becomes the heat release start temperature T2 or lower, the on-off valve vb6. Is opened, the thermoelectric cogeneration system 11 is operated in the direct heat generation mode, and when the reactor temperature T becomes higher and becomes higher than the heat release start temperature T2, the on-off valve vb6 is closed, and the thermoelectric cogeneration system 11 is in the direct power generation mode. It is driven by. In addition, when the reactor temperature T is changed by a predetermined width between the heat storage temperature T1 and the heat release start temperature T2, the thermoelectric cogeneration system 11 can be operated in the heat storage power generation mode.

  When the exothermic reaction of all magnesium oxide is completed at timing t17, the direct heat radiation power generation processing unit ends the operation of the thermoelectric cogeneration system 11.

  Next, in the case of solar energy, waste heat, and this embodiment, a third embodiment of the present invention in which power is generated by factory waste heat and heat is recovered will be described.

  FIG. 18 is a conceptual diagram of a thermoelectric cogeneration system according to the third embodiment of the present invention.

  In the figure, 13 is a thermoelectric conversion unit, 15 is a water tank as a reaction medium storage unit for storing water as a reaction medium, 33 is a reactor as a heat storage unit, 71 is a waste heat recovery device for recovering factory waste heat, he5 Is a heat exchanger disposed in the water tank 15 and connected to the waste heat recovery device 71.

  The factory waste heat recovered in the waste heat recovery device 71 is transferred to water as a waste heat transfer medium, and the water in the water tank 15 is heated by the heat exchanger he5 to 100 ° C. water.

  Therefore, in the heat radiation power generation mode or the direct heat radiation power generation mode, 100 [° C.] water can be supplied to the reactor 33 and power can be generated in the thermoelectric conversion unit 13.

  In the present embodiment, the factory waste heat is recovered by the waste heat recovery device 71, and the water in the water tank 15 is heated by the recovered factory waste heat, but instead of the waste heat recovery device 71, A geothermal utilization device is provided, and the water in the water tank 15 can be heated by the geothermal heat acquired by the geothermal utilization device.

  Next, a fourth embodiment of the present invention in which an exothermic reaction is caused in the reactor 33 without using the water stored and stored in the water tank 15 will be described.

  FIG. 19 is a conceptual diagram of a thermoelectric cogeneration system according to the fourth embodiment of the present invention.

  In the figure, 13 is a thermoelectric conversion unit, 16 is a heat recovery device, 33 is a reactor as a heat storage unit, and 72 is a water supply curan as a reaction medium supply source for supplying tap water as a reaction medium.

  In the heat storage mode and the heat storage power generation mode, the water vapor generated by the endothermic reaction in the reactor 33 is directly sent to the heat recovery device 16, and heat is recovered in the heat recovery device 16. In the present embodiment, power generation in the thermoelectric conversion unit 13 is performed in the heat storage power generation mode.

  Further, in the heat dissipation power generation mode and the direct heat dissipation power generation mode, water is supplied to the reactor 33 by opening the water supply currant 72, and an exothermic reaction is caused in the reactor 33. During this time, the thermoelectric converter 13 generates power.

  In the present embodiment, the water vapor generated by the endothermic reaction is directly sent to the heat recovery device 16, and the heat recovery device 16 recovers the heat. Can be released and discarded.

  Next, when the water tank 15 is connected to the reactor 33 (first embodiment of the present invention), when the waste heat recovery device 71 is connected to the reactor 33 (third embodiment of the present invention). And the change of each thermal storage energy when the water supply currant 72 is connected to the reactor 33 (4th Embodiment of this invention) is demonstrated.

  FIG. 20 is a time chart showing the transition of heat storage energy.

  In the figure, Qs is solar energy, Qt is heat storage energy when the water tank 15 is connected to the reactor 33, Qf is heat storage energy when the waste heat recovery device 71 is connected to the reactor 33, and Qk is the reactor 33. It is the heat storage energy when the water supply currant 72 is connected.

  Normally, all of the heat storage energy Qt, Qf, Qk is less than the solar energy Qs. However, when the waste heat recovery device 71 is connected to the reactor 33, depending on the temperature and amount of factory waste heat, the solar energy Qs A large amount of heat storage energy Qf ′ can be stored.

  In this case, it is assumed that the amount of solar radiation is constant and the amount of heat radiation is constant. Moreover, since the heat storage energy by the specific heat of the heat storage material of the reactor 33 is extremely smaller than the heat storage energy by the reaction of the reactor 33, it was ignored.

  The present invention is not limited to the above embodiments, and various modifications can be made based on the gist of the present invention, and they are not excluded from the scope of the present invention.

DESCRIPTION OF SYMBOLS 11 Thermoelectric cogeneration system 13 Thermoelectric conversion part 15 Water tank 23 3rd piping system 31 Condensing part 32 Heat collecting part 33 Reactor

Claims (7)

A light collecting unit that collects sunlight;
A heat collecting unit that converts sunlight collected by the light collecting unit into heat and collects the converted heat;
A reactor that receives heat collected by the heat collecting section to cause an endothermic reaction, generates a reaction medium, is supplied with the reaction medium to cause an exothermic reaction, and generates heat;
A thermoelectric converter that receives heat generated in the reactor and generates a current in accordance with a temperature difference between the high-temperature part and the low-temperature part;
A thermoelectric cogeneration system comprising: a reaction medium supply / discharge device for discharging the reaction medium generated in the reactor from the reactor and supplying the discharged reaction medium to the reactor.   The reaction medium supply / discharge device includes a reaction medium discharge pipe for discharging the reaction medium from the reactor, a valve disposed in the reaction medium discharge pipe, a reaction medium supply pipe for supplying the reaction medium to the reactor, The thermoelectric cogeneration system according to claim 1, further comprising a valve disposed in the reaction medium supply pipe.   The thermoelectric cogeneration system according to claim 2, wherein the valve disposed in the reaction medium discharge pipe is opened by a pressure difference between a pressure on the upstream side and a pressure on the downstream side of the valve.   The thermoelectric cogeneration system according to claim 1 or 2, further comprising a power consuming unit to which a current generated in the thermoelectric conversion unit is sent.   4. The reaction medium supply / discharge device according to claim 1, further comprising a reaction medium storage unit for storing the reaction medium discharged from the reactor and supplying the stored reaction medium to the reactor. The described thermoelectric cogeneration system.   The thermoelectric cogeneration system according to any one of claims 1 to 3, wherein in the reaction medium supply / discharge device, the reaction medium discharged from the reactor is discarded.   The thermoelectric cogeneration system according to claim 5, wherein the reaction medium is heated by waste heat in a reaction medium container.

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