CN114151297A - Wet helium gas circulating water and electricity cogeneration system based on solar drive and working method - Google Patents
Wet helium gas circulating water and electricity cogeneration system based on solar drive and working method Download PDFInfo
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- CN114151297A CN114151297A CN202111459147.3A CN202111459147A CN114151297A CN 114151297 A CN114151297 A CN 114151297A CN 202111459147 A CN202111459147 A CN 202111459147A CN 114151297 A CN114151297 A CN 114151297A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000001307 helium Substances 0.000 title claims abstract description 69
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 69
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000007789 gas Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000005611 electricity Effects 0.000 title claims abstract description 10
- 238000005338 heat storage Methods 0.000 claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 3
- 239000007924 injection Substances 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 239000013535 sea water Substances 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000013505 freshwater Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/006—Auxiliaries or details not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
A wet helium gas circulating water and electricity cogeneration system based on solar drive and a working method belong to the field of humidification turbine circulation and solar energy utilization. The system comprises a low-pressure compressor, a high-pressure compressor, a solar thermal collector, a heater, a heat storage tank, a turbine, a generator, a main shaft, an intercooler, an economizer, a condensate tank, a crystallizing tank, a saturator, a heat regenerator, a water pump, an air pump and a central clapboard. The solar energy is used as main supply energy of the system, so that the combustion process is avoided, the generation and discharge of pollutants are greatly reduced, and fresh water and crystals are obtained by processing seawater, thereby meeting the strategic requirements of national energy conservation and emission reduction and water resource sustainable development.
Description
Technical Field
The invention relates to a wet helium gas circulating water and electricity cogeneration system based on solar drive, and belongs to the field of humidification turbine circulation and solar energy utilization.
Background
In a conventional wet air turbine cycle, supplementary feed water is needed for air humidification, air enters a combustion chamber for combustion after being humidified, however, the continuous supplementary feed water and air are needed for realizing the cycle, water vapor in turbine exhaust is usually directly discharged and cannot be recycled, so that waste of water resources is caused, and combustion flue gas also contains various harmful substances to the environment. Therefore, helium is adopted to replace air, the helium is non-toxic and harmless and has stable property, and the circulation adopts closed circulation without helium supplement. The seawater is used as the feed water to absorb the exhaust waste heat of the turbine and the heat released by the intercooler, and the helium is humidified by adopting a mode of combining direct evaporation and indirect evaporation. Meanwhile, the wet helium is supplied with energy by adopting a solar heat collection mode so as to heat, so that the combustion process is avoided, the consumption of fossil fuel and the emission of harmful substances in exhaust smoke are reduced, the early realization of carbon peak reaching and carbon neutralization is facilitated, and the solar energy heat collection device has important application value.
Disclosure of Invention
The invention aims to provide an energy-saving and environment-friendly wet helium gas circulating water and electricity cogeneration system based on solar drive and a working method.
The utility model provides a wet helium circulation water and electricity cogeneration system based on solar drive which characterized in that includes low-pressure compressor, high-pressure compressor, solar collector, first oil pump, first valve, second oil pump, heat exchanger, third oil pump, oil tank, heat storage tank, heater, turbine, generator, main shaft, intercooler, feed pump, economic ware, water storage tank, first water pump, saturator, second water pump, regenerator, fan, centrifuge, central baffle.
The feed water is connected with the inlet of a feed pump, the outlet of the feed pump is respectively connected with the cold-end inlet of an intercooler and the cold-end inlet of an economizer, the cold-end outlet of the intercooler is connected with the left and right feed water inlets at the upper end of a saturator, the water outlet at the bottom of the saturator is connected with the inlet of a first water pump, and the outlet of the first water pump is connected with the inlet of a centrifuge; the cold end outlet of the economizer is connected with the right water supply inlet at the upper end of the heat regenerator, the water outlet at the lower end of the heat regenerator is connected with the inlet of a second water pump, and the outlet of the second water pump is connected with the inlet of the centrifuge.
The economizer hot end outlet is connected with the low-pressure compressor inlet, the low-pressure compressor outlet is connected with the intercooler hot end inlet, the intercooler hot end outlet is connected with the high-pressure compressor inlet, the high-pressure compressor outlet is connected with the saturator left helium inlet, the saturator upper end left wet helium outlet is connected with the regenerator lower end left wet helium inlet, the saturator upper end right dry helium outlet is connected with the regenerator lower end right dry helium inlet, the regenerator upper end left wet helium outlet is connected with the heater cold end inlet, the heater cold end outlet is connected with the turbine inlet, the turbine outlet is connected with the air pump inlet, the air pump outlet is connected with the regenerator left end inlet, the regenerator upper end right outlet is connected with the economizer hot end inlet, and the economizer hot end outlet is respectively connected with the low-pressure compressor inlet and the water storage tank inlet. The low-pressure compressor, the high-pressure compressor, the turbine and the generator are connected through the main shaft, the heat regenerator is also provided with a longitudinal central partition plate, and the longitudinal central partition plate is fully distributed with pores which only allow airflow to pass but not allow water to pass.
The working medium outlet of the solar heat collector is connected with the inlet of the first oil pump, the outlet of the first oil pump is respectively connected with the hot end inlet of the heat exchanger and the inlet of the third oil pump through the first valve, the outlet of the third oil pump is connected with the hot end inlet of the heater, the outlet of the hot end of the heater is connected with the inlet of the solar heat collector through the second valve, the outlet of the hot end of the heat exchanger is connected with the inlet of the solar heat collector, the oil tank is connected with the inlet of the second oil pump, the outlet of the second oil pump is connected with the cold end inlet of the heat exchanger, and the outlet of the cold end of the heat exchanger is connected with the inlet of the heat storage tank.
The working method of the wet helium gas circulating water and electricity cogeneration system based on solar drive comprises the following processes: in the system, feed water is divided into two branches after passing through a feed water pump, the first branch enters an intercooler to absorb heat and then enters a saturator from a left water filling port and a right water filling port at the upper end of the saturator, a water outlet at the lower end of the saturator enters a centrifugal machine through a water pump, the second branch enters an economizer to absorb heat and then enters a heat regenerator from a right water filling port at the upper end of the heat regenerator, and a water outlet at the lower end of the heat regenerator enters the centrifugal machine through the water pump. The dry helium enters the low-pressure compressor for boosting, enters the high-pressure compressor for compression after heat release of the intercooler, enters from the left end of the saturator, is cooled in a pipeline of the saturator, wherein one air flow returns to the shell side of the saturator to be in direct contact with a first branch of water for heat transfer and mass transfer, enters from a wet helium inlet at the lower end of the regenerator after humidification, flows out from a dry helium outlet at the upper end of the saturator after the residual air flow is converged, enters from a dry helium inlet at the right side at the lower end of the regenerator, is provided with a longitudinal central partition plate which is fully distributed with pores and only allows the air flow to pass but not allow water to pass, directly contacts with a second branch of water injected at the upper end of the regenerator for humidification and absorbs heat, converges with a first flow of helium in the regenerator, flows out from a wet helium outlet at the upper end of the regenerator, enters the heater for absorbing heat and then heats up, and enters the turbine for doing work, wet helium at the outlet of the turbine enters from the left end of the regenerator, heat is transferred to the helium entering from the saturator, the helium flows out from the outlet at the upper end of the regenerator and enters the economizer to be condensed, condensed water enters the water storage tank to be collected for use, and dry helium enters the low-pressure compressor to circulate. In daytime, the heat absorption working medium absorbs heat from the solar heat collector and rises in temperature, and is divided into two branches, one branch enters the heat absorber to release heat, the other branch enters the heat exchanger to release heat, the two branches converge after releasing heat and enter the solar heat collector again, and the heat absorption working medium enters the heat exchanger from the oil tank to absorb heat and enters the heat storage tank to store energy. Closing the first valve and the second valve at night, enabling the high-temperature working medium in the heat storage tank to enter the heat exchanger) to release heat, enabling the working medium from the heat absorber to absorb the heat released by the high-temperature working medium in the heat exchanger, enabling the working medium to enter the circulation again, and continuously releasing heat in the heat absorber to the humid helium side.
The wet helium gas circulating water and electricity cogeneration system based on solar drive is characterized by comprising the following processes:
according to the wet helium gas circulating water and electricity cogeneration system based on solar drive, the intercooler, the heat exchanger, the heater and the economizer adopt the tubular heat exchanger, and the saturator and the heat regenerator adopt the shell-and-tube heat exchanger.
Compared with the prior art, the invention has at least the following advantages: the invention uses helium as a circulating working medium to replace the traditional air, provides the idea of wet helium turbine circulation, and has important application prospect due to the advantages of no toxicity, no harm, stable physical and chemical properties, easy humidification and the like of helium. Adopt closed circulation, the operation of this system only needs fixed quantity's cycle working medium, need not processes such as helium replenishment, uses the sea water as the feedwater, utilizes many places waste heat as heat source heating feedwater, and high-efficient humidifying helium collects the comdenstion water and uses as fresh water, and remaining high salt waste liquid that contains carries out crystallization operation. The solar heat collection mode is adopted to provide energy for power circulation, so that the combustion process of fossil energy is avoided, and the emission of harmful substances is reduced. The whole system is clean and harmless in the working process, the use of water resources is powerfully saved, and the strategic requirements of national energy conservation and emission reduction are met.
Drawings
Fig. 1 is a wet helium gas circulation water and power cogeneration system based on solar drive, and fig. 2 is a schematic diagram of a saturator and a regenerator in the system. The system comprises a low-pressure compressor 1, a high-pressure compressor 2, a solar heat collector 3, a first oil pump 4, a first valve 5, a second valve 6, a second oil pump 7, a heat exchanger 8, a third oil pump 9, an oil tank 10, a heat storage tank 11, a heater 12, a turbine 13, a generator 14, a main shaft 15, an intercooler 16, a water feeding pump 17, an economizer 18, a water storage tank 19, a first water pump 20, a saturator 21, a second water pump 22, a heat regenerator 23, a fan 24, a centrifuge 25 and a central partition plate 26.
Detailed Description
A solar-powered wet helium gas cycle cogeneration system is described below with reference to fig. 1.
In the system, feed water is divided into two branches after passing through a feed water pump, the first branch enters an intercooler to absorb heat and then enters a saturator from a left water filling port and a right water filling port at the upper end of the saturator, a water outlet at the lower end of the saturator enters a centrifugal machine through a water pump, the second branch enters an economizer to absorb heat and then enters a heat regenerator from a right water filling port at the upper end of the heat regenerator, and a water outlet at the lower end of the heat regenerator enters the centrifugal machine through the water pump. The dry helium enters the low-pressure compressor for boosting, releases heat through the intercooler, enters the high-pressure compressor for compression, enters from the left end of the saturator, is cooled in a saturator pipeline, one air flow returns to the shell side of the saturator to be in direct contact with a first branch of water for heat transfer and mass transfer, enters from a wet helium inlet at the lower end of the regenerator after humidification, flows out from a dry helium outlet at the upper end of the saturator after the other residual air flows are converged, enters from a dry helium inlet at the right side at the lower end of the regenerator, is provided with a longitudinal central partition plate which is fully distributed with pores and only allows the air flow to pass but not water to pass, is in direct contact with a second branch of water injected at the upper end of the regenerator for humidification and heat absorption, converges with the first flow of helium in the regenerator after passing through the central partition plate, flows out from the wet helium outlet at the upper end of the regenerator, enters the heater for heat absorption and then heats up, and enters the turbine for doing work, wet helium at the outlet of the turbine enters from the left end of the regenerator, heat is transferred to the helium entering from the saturator, the helium flows out from the outlet at the upper end of the regenerator and enters the economizer to be condensed, condensed water enters the water storage tank to be collected for use, and dry helium enters the low-pressure compressor to circulate. In daytime, the heat absorption working medium absorbs heat from the solar heat collector and rises in temperature, and is divided into two branches, one branch enters the heat absorber to release heat, the other branch enters the heat exchanger to release heat, the two branches converge after releasing heat and enter the solar heat collector again, and the heat absorption working medium enters the heat exchanger from the oil tank to absorb heat and enters the heat storage tank to store energy. And at night, the first valve and the second valve are closed, the high-temperature working medium in the heat storage tank enters the heat exchanger to release heat, the working medium from the heat absorber absorbs the heat released by the high-temperature working medium in the heat exchanger and enters the circulation again, and the heat is continuously released to the wet helium side in the heat absorber.
Claims (3)
1. A wet helium circulating water and electricity cogeneration system based on solar drive is characterized by comprising a low-pressure compressor (1), a high-pressure compressor (2), a solar heat collector (3), a first oil pump (4), a first valve (5), a second valve (6), a second oil pump (7), a heat exchanger (8), a third oil pump (9), an oil tank (10), a heat storage tank (11), a heater (12), a turbine (13), a generator (14), a main shaft (15), an intercooler (16), a water feeding pump (17), an economizer (18), a water storage tank (19), a first water pump (20), a saturator (21), a second water pump (22), a heat regenerator (23), a fan (24), a centrifugal machine (25) and a central partition plate (26);
the feed water is connected with an inlet of a feed water pump (17), an outlet of the feed water pump (17) is respectively connected with a cold end inlet of an intercooler (16) and a cold end inlet of an economizer (18), a cold end outlet of the intercooler (16) is connected with a left feed water inlet and a right feed water inlet at the upper end of a saturator (21), a water outlet at the bottom of the saturator (21) is connected with an inlet of a first water pump (20), and an outlet of the first water pump (20) is connected with an inlet of a centrifuge (25); the cold end outlet of the economizer (18) is connected with the right feed water inlet at the upper end of the heat regenerator (23), the water outlet at the lower end of the heat regenerator (23) is connected with the inlet of a second water pump (22), and the outlet of the second water pump (22) is connected with the inlet of a centrifugal machine (25);
the hot end outlet of the economizer (18) is connected with the inlet of the low-pressure compressor (1), the outlet of the low-pressure compressor (1) is connected with the hot end inlet of the intercooler (16), the hot end outlet of the intercooler (16) is connected with the inlet of the high-pressure compressor (2), the outlet of the high-pressure compressor (2) is connected with the helium inlet at the left side of the saturator (21), the wet helium outlet at the left side of the upper end of the saturator (21) is connected with the wet helium inlet at the left side of the lower end of the heat regenerator (23), the dry helium outlet at the right side of the upper end of the saturator (21) is connected with the dry helium inlet at the right side of the lower end of the heat regenerator (23), the wet helium outlet at the left side of the upper end of the heat regenerator (23) is connected with the cold end inlet of the heater (12), the cold end outlet of the heater (12) is connected with the inlet of the turbine (13), the outlet of the turbine (13) is connected with the inlet of the air pump (24), the outlet of the air pump (24) is connected with the left end inlet of the heat regenerator (23), the heat end of the heat regenerator (23), and the outlet of the upper end of the economizer (18), the hot end outlet of the economizer (18) is respectively connected with the inlet of the low-pressure compressor (1) and the inlet of the water storage tank (19); the low-pressure compressor (1), the high-pressure compressor (2), the turbine (13) and the generator (14) are connected through a main shaft (15); the heat regenerator (23) is also provided with a longitudinal central clapboard (26), and the longitudinal central clapboard (26) is fully distributed with pores which only allow airflow to pass but not allow water to pass;
working medium outlet of the solar heat collector (3) is connected with inlet of the first oil pump (4), outlet of the first oil pump (4) is connected with hot end inlet of the heat exchanger (8) and inlet of the third oil pump (9) through the second valve (6), outlet of the third oil pump (9) is connected with hot end inlet of the heater (12), outlet of the hot end of the heater (12) is connected with inlet of the solar heat collector (3) through the first valve (5), outlet of the hot end of the heat exchanger (8) is connected with inlet of the solar heat collector (3), oil tank (10) is connected with inlet of the second oil pump (7), outlet of the second oil pump (7) is connected with inlet of the cold end of the heat exchanger (8), outlet of the cold end of the heat exchanger (8) is connected with inlet of the heat storage tank (11).
2. The solar drive based wet helium gas cycle cogeneration system of claim 1, wherein: the intercooler, the heat exchanger, the heater and the economizer adopt tube type heat exchangers, and the saturator and the heat regenerator adopt shell and tube type heat exchangers.
3. The method of operating a solar drive based wet helium cycle cogeneration system of claim 1, comprising the process of:
in the system, feed water is divided into two branches after passing through a feed water pump (17), the first branch enters an intercooler (16) to absorb heat and then enters a saturator (21) from a left water injection port and a right water injection port at the upper end of the saturator (21), and a water outlet at the lower end of the saturator (21) enters a centrifuge (25) through a first water pump (20); the second branch enters the economizer (18) to absorb heat and then enters from a right water injection port at the upper end of the heat regenerator (23), and a water outlet at the lower end of the heat regenerator (23) enters the centrifuge (25) through a second water pump (22); the dry helium enters a low-pressure compressor (1) for boosting, enters a high-pressure compressor (2) for compression after heat release through an intercooler (16), enters from the left end of a saturator (21), is cooled in a pipeline of the saturator (21), one air flow returns to the shell side of the saturator (21) and is in direct contact with first branch water for heat and mass transfer, enters from a wet helium inlet at the lower end of a heat regenerator (23) after humidification, flows out from a dry helium outlet at the upper end of the saturator (21) after residual air flow is converged, enters from a dry helium inlet at the right side of the lower end of the heat regenerator (23), the heat regenerator (23) is provided with a longitudinal central partition plate (26) which is fully distributed with pores, only allows the air flow to pass but cannot pass water, the dry helium directly contacts with second branch water injected at the upper end of the heat regenerator (23) for humidification and heat absorption, and converges with the first branch helium in the heat regenerator (23) after passing through the central partition plate (26) and then flows out from a wet helium outlet at the upper end of the heat regenerator (23), the wet helium enters the heater (12) to absorb heat and then is heated, enters the turbine (13) to do work, enters the turbine (13) from the left end of the heat regenerator (23), transfers the heat to the helium entering from the saturator (21), flows out from the outlet at the upper end of the heat regenerator (23), enters the economizer (18) to be condensed, condensed water enters the water storage tank (19) to be collected and used, and dry helium enters the low-pressure compressor (1) to be circulated; in daytime, the heat absorption working medium absorbs heat from the solar heat collector (3) and heats up, the working medium is divided into two branches, one branch enters the heat absorber (12) to release heat, the other branch enters the heat exchanger (8) to release heat, the two branches converge after releasing heat and enter the solar heat collector (3) again, and the heat absorption working medium enters the heat exchanger (8) from the oil tank (10) to absorb heat and enters the heat storage tank (11) to store energy; and at night, the first valve (5) and the second valve (6) are closed, the high-temperature working medium in the heat storage tank (11) enters the heat exchanger (8) to release heat, the working medium from the heat absorber (12) absorbs the heat release of the high-temperature working medium in the heat exchanger (8) and enters the circulation again, and the heat release in the heat absorber (12) is continued to give the humid helium.
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