TW202305237A - Heat storage and pressure accumulation cycle power generation system and control method thereof capable of converting heat energy into electrical energy - Google Patents

Abstract

Provided is a heat storage and pressure accumulation cycle power generation system, which includes a heat storage and pressure accumulation unit connected to a heat source, wherein the heat source absorbs and transmits heat energy to the heat storage and pressure accumulation unit, so that a first working substance in the heat storage and pressure accumulation unit is heated and pressurized for being transformed into the gaseous state; a first power generation device for receiving the high-temperature and high-pressure first working substance released from the heat storage and pressure accumulation unit, and converting the fluid kinetic energy of the first working substance into electrical energy; a heat storage tank for receiving the first working substance flowing through the first power generation device for performing heat exchange and heat energy storage; and a cooling tank for receiving the first working substance from the heat storage tank, and subjecting the first working substance to a phase change for being converted into the liquid state and then transmitted to the heat storage and pressure accumulation unit, thereby forming a cycle.

Description

Heat storage and pressure storage cycle power generation system and its control method

The invention discloses a heat storage and pressure storage cycle power generation system for converting heat energy into electric energy.

The Republic of China Patent Publication No. TW202037860 applied by the applicant discloses a heat pipe power generation water heater system comprising: at least one heat pipe body for providing working medium flow pipes, heat conduction and combining other devices, at least one first power generation device is arranged on The flow pipes of the heat pipe body are used to convert the fluid kinetic energy of the working fluid into electric energy; at least one heat storage and pressure storage unit is used to exchange heat with the heat conduction part of the heat pipe body and store heat energy to provide hot water.

The previous technology aimed at using solar energy, electrical waste heat or small-scale temperature difference to generate electricity and store heat energy. However, in the original structural design, the pressure that the heat pipe could withstand was limited, which limited the working fluid and power generation efficiency that could be selected.

The object of the present invention is to provide a heat storage and pressure storage cycle power generation system, which includes a heat storage and pressure storage unit connected to a heat source, and the thermal energy of the heat source is transmitted to the heat storage and pressure storage unit to raise the temperature and increase the temperature of a first working medium in the heat storage and pressure storage unit. pressure into a gaseous state, a first power generation device receives the high-temperature and high-pressure first working fluid released from the heat storage and pressure storage unit and converts the fluid kinetic energy of the first working fluid into electrical energy, and a heat storage tank receives the first working fluid flowing through the first working fluid. The first working fluid of a power generation device, and store the heat energy generated when the first working fluid performs heat exchange, and a cooling tank receives the first working fluid from the heat storage tank, and makes the first working fluid undergo phase After the state changes, it is transmitted to the heat storage and pressure storage unit, and a water tower is arranged between the heat storage tank and the cooling tank.

The heat storage tank has a plurality of heat exchangers inside to increase the surface area to speed up heat exchange, and for the first working fluid to flow in for heat exchange. The heat storage tank has a high-temperature layer, a medium-temperature layer and a low-temperature layer The layer has the function of isolation and reduces thermal diffusion, so that high temperature can stay in the high-temperature layer, and the first working fluid flows through the cooling tank after heat exchange in the heat storage tank and then returns to the heat storage and pressure storage unit.

There is also a second working substance used to pressurize or depressurize the liquid first working substance, that is, use the pressure generated by the second working substance to control the temperature point at which the first working substance undergoes phase change.

Preferably, a temperature division control valve is arranged between the first power generation device and the heat storage tank, the first working fluid flows through the temperature division control valve after flowing through the first power generation device to generate electricity, and the temperature division control valve According to the waste heat temperature of the first working fluid after power generation, the first working fluid is controlled to flow into the high-temperature layer or the medium-low temperature layer for heat exchange, so as to maintain the temperature of the high-temperature layer, so as to maintain the benefits of energy storage and power generation at night.

Preferably, there is also a circulation return pipe arranged between the first power generation device and the partial temperature control valve, so as to maintain the continuous operation of the first power generation device with the flywheel blades.

Preferably, there is also a heater installed in the heat storage tank, using low-priced off-peak electricity or redundant green electricity for high-temperature heat storage, and using the heat storage energy during peak electricity consumption periods with higher prices It is used to generate power to balance the power grid and make profits.

There are also a plurality of control valves arranged on the heat storage and pressure storage unit, which are respectively a thermal energy inlet control valve, a thermal energy outlet control valve, a first working fluid return port control valve, and a first working fluid outlet control valve. The control valve is used to control the entry and exit of heat energy and the entry and exit of the first working fluid of a first heat storage and pressure storage tank, a second heat storage and pressure storage tank and a third heat storage and pressure storage tank of the heat storage and pressure storage unit.

Preferably, two of the heat storage and pressure storage tanks of the heat storage and pressure storage unit store the first working fluid in a liquid state, thereby reducing the time for waiting for the temperature of the first working fluid to rise and the temperature of the heat storage and pressure storage tank to cool down. Improve power generation efficiency.

Preferably, the present invention also has a working fluid adjustment device arranged between the heat storage and pressure storage unit and the first power generation device or the cooling tank, and when it detects a change in the external ambient temperature, it will adjust the second working fluid. The base pressure of the system maintained by the mass is used to change the condensation temperature of the first working fluid to improve the cycle efficiency.

Preferably, the present invention also has a liquid level detector installed in the heat storage tank, when it detects that the first working fluid is insufficient, it will open the working fluid adjustment device to replenish the first working fluid so that the first working fluid Mass flow for thermal cycling.

In addition, an air bag is provided in the water tower, and a second power generation device is provided between the water tower and the cooling tank. When the first working medium flows into the water tower to expand the air bag, the liquid originally stored in the water tower flows out and In this way, the second power generation device is driven, and when the first working fluid condenses and flows out, the air bag shrinks, and the liquid flows back into the water tower at the same time to drive the second power generation device again, thereby generating more efficient power.

The present invention also includes a control method for a heat storage and pressure storage cycle thermal power generation system, which includes the following steps: (A) Turn on the heat storage and pressure storage unit and receive heat energy from a heat source, so that a first working fluid in the heat storage and pressure storage unit reaches the working pressure and temperature to convert the first working fluid into a vaporized first working fluid , controlling the vaporized first working fluid to flow through the first power generation device to reach a heat storage tank, and using the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device to generate electricity; (B) After the vaporized first working medium is transferred to the heat storage tank for heat exchange, the vaporized first working medium flows into the cooling tank to condense back to the liquid first working medium, and the liquid first working medium is The substance is returned to the heat storage and pressure storage unit; (C) shutting down the thermal storage and pressure storage unit; and (D) Step (A) to step (C) are repeated at least once to form a heat storage pressure storage power generation cycle.

Preferably, step (A) also includes the following steps: (A1) Open a heat energy inlet control valve and a heat energy outlet control valve and switch to a first heat storage pressure storage tank; (A2) The first heat storage and pressure storage tank receives heat energy from a heat source. When the first working medium in the first heat storage and pressure storage tank reaches the working pressure and temperature to make the first working medium reach the working condition of vaporization, a The first working fluid outlet control valve is opened and switched to the first heat storage and pressure storage tank, and a first working fluid return port control valve is opened to switch to a third heat storage and pressure storage tank, so that the vaporized first working medium flows through a first power generation device, and utilize the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device; and (A3) Switching the thermal energy inlet control valve and the thermal energy outlet control valve to a second heat storage and pressure storage tank.

Preferably, step (B) also includes the following steps: (B1) Make the vaporized first working fluid flow into a water tower after passing through the heat storage tank, expand an airbag in the water tower, drive a liquid originally stored in the water tower to flow out, and use the fluid kinetic energy of the liquid to drive a the second power generating means to generate the first power; and (B2) When the first working medium is condensed back to liquid state, the air bag is deflated, and the liquid is returned to the water tower, and at the same time, the second power generation device is driven to generate electricity for the second time.

In order to clearly illustrate the specific implementation mode, structure and achieved effects of the present invention, the accompanying drawings are described as follows:

Please refer to FIG. 1 to FIG. 4, which illustrate a heat storage and pressure storage cycle power generation system, which includes a heat storage and pressure storage unit 20 connected to a heat source 10, and the heat energy of the heat source 10 is transmitted to the heat storage and pressure storage unit 20 to make the heat storage and pressure storage unit 20 A first working fluid is heated and pressurized and converted into a gaseous state when it is released. A first power generation device 41 receives the high-temperature and high-pressure first working fluid released from the heat storage and pressure storage unit 20 and converts the first working fluid Fluid kinetic energy is converted into electrical energy, a heat storage tank 40 receives the first working fluid flowing through the first power generation device 41, performs heat exchange on the first working fluid to store thermal energy, and a cooling tank 50 receives heat from the heat storage tank 40 The first working fluid in the tank 40 is transferred to the heat storage and pressure storage unit 20 after the phase change of the first working fluid to a liquid state to form a cycle. The heat source 10 may be process waste heat, solar heat collection or other heat sources.

Wherein, the heat storage tank 40 or the cooling tank 50 also has a second working fluid filled in the space outside the liquid first working fluid, and the second working fluid is used to heat the liquid first working fluid. Pressure or decompression, that is, using the pressure generated by the second working substance to control the temperature point at which the first working substance undergoes phase change.

Please refer to Fig. 2, a water tower 30 is also arranged between the heat storage tank 40 and the cooling tank 50, an air bag 32 is arranged in the water tower 30, and a second power generation device 31 is arranged between the water tower 30 and the cooling tank 50 When the first working fluid flows into the water tower 30 to expand the air bag 32, the liquid originally stored in the water tower 30 flows out to drive the second power generation device 31, and the air bag 32 shrinks when the first working fluid condenses and flows out At this time, the liquid flows back into the water tower 30 and at the same time drives the second power generation device 31 again, thereby generating more efficient power. In this embodiment, the second power generating device 31 is a water turbine generator. The foregoing paragraphs have revealed that the first working fluid condenses back into a liquid state in the air bag 32 .

Please refer to FIG. 3 , the present invention also has a plurality of control valves arranged on the heat storage and pressure storage unit 20, and the heat storage and pressure storage unit 20 includes a first heat storage and pressure storage tank 21, a second heat storage and pressure storage tank 22 and a third heat storage and pressure storage tank 22. Heat storage and pressure storage tank 23, the control valves are respectively a thermal energy inlet control valve 61, a thermal energy outlet control valve 62, a first working fluid return port control valve 64 and a first working fluid outlet control valve 63, these control The valve is used to control the entry and exit of thermal energy and the entry and exit of the first working fluid of the heat storage and pressure storage tanks.

In actual use, two of the heat storage and pressure storage tanks store the first working fluid inside, and the other is an empty tank. When the first working medium in one of the heat storage and pressure storage tanks is vaporized, it flows through the first power generation The device 41, the heat storage tank 40, the water tower 30 and the cooling tank 50 will be stored in the empty tank afterward, so that the heat storage and pressure storage tank originally storing the first working fluid will form an empty tank for storing the first working fluid in the next cycle. The heat storage and pressure storage tank of the working fluid can reduce the time for waiting for the first working fluid to heat up and the heat storage and pressure storage tank to cool down, thereby improving the power generation efficiency.

Referring to Fig. 4, the heat storage tank 40 has a high temperature layer 401, a medium temperature layer 402 and a low temperature layer 403, and the heat storage tank 40 is divided into a high temperature layer 401, a medium temperature layer 402 and a low temperature layer 403 with isolation In order to reduce the thermal diffusion of heat storage energy, when the first working fluid flows through the heat storage tank 40, the first working fluid performs heat exchange in the heat storage tank 40, so that the residual temperature of the first working fluid can be Stored in the heat storage tank 40, thereby providing nighttime use or as a backup.

In order to balance the grid and obtain the benefits of electricity price differences, in other implementations, two heaters 46 can also be installed in the heat storage tank 40 to be located in the high-temperature layer 401 and the middle-temperature layer 402 respectively, so as to utilize the lower-priced Off-peak electricity or excess green electricity is used for high-temperature heat storage, and the heat storage energy is used for power generation during peak electricity consumption with higher prices to achieve the effect of balancing the grid and making profits.

In this embodiment, there is also a partial temperature control valve 42 disposed between the first power generation device 41 and the heat storage tank 40, the first working fluid flows through the first power generation device 41 to generate electricity and then flows through the branch. The temperature control valve 42, the temperature division control valve 42 controls the first working fluid to flow into the high temperature layer 401 or the middle and low temperature layers 402, 403 according to the temperature of the waste heat after the first working fluid generates electricity, thereby maintaining the temperature of the high temperature layer 401 to To maintain the benefits of night-time power generation and energy storage.

A circulation return pipe 43 is also provided between the first power generation device 41 and the temperature division control valve 42 to facilitate continuous operation of the first power generation device 41 with flywheel blades.

The first working fluid flows into the cooling tank 50 after heat exchange in the heat storage tank 40 , and the cooling tank 50 condenses the first working fluid back into a liquid form and then flows back to the heat storage and pressure storage unit 20 . In this embodiment, the heat storage tank 40 has a plurality of heat exchangers 44 inside to increase the surface area and speed up the heat exchange.

In this embodiment, there is also a working fluid adjustment device 70 disposed between the heat storage and pressure storage unit 20 and the first power generation device 41 or the cooling tank 50, and a liquid level detector (not shown) is disposed In the heat storage tank 40, when the liquid level detector detects that the first working fluid is insufficient, the working fluid adjusting device 70 is turned on to supplement the first working fluid. Or when detecting changes in the external ambient temperature, the working fluid adjusting device 70 will adjust the second working fluid to maintain the system base pressure, so as to change the condensation temperature of the first working fluid to improve cycle efficiency.

Please refer to Fig. 5 to Fig. 10, the present invention also provides a control method for heat storage and pressure storage cycle thermal power generation system, which includes the following steps: (A) Transfer the thermal energy of a heat source 10 to the heat storage and pressure storage unit 20, so that a first working fluid in the heat storage and pressure storage unit 20 reaches the working pressure and temperature so that the first working fluid reaches the working condition of vaporization and converts to vaporization control the vaporized first working fluid to flow through the first power generation device 41 into a heat storage tank 40, and use the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device 41 power generation; (B) After the vaporized first working medium is transferred to the heat storage tank 40 for heat exchange, the vaporized first working medium flows into the cooling tank 50 to condense back to the liquid first working medium, and the liquid second working medium is A working fluid is returned to the heat storage and pressure storage unit 20; (C) shut down the heat storage pressure storage unit 20; and (D) Step (A) to step (C) are repeated at least once to form a heat storage pressure storage power generation cycle.

In this embodiment, step A1 to step A7, step B1 to step B3 and step C1 are included to form a more efficient cycle power generation, and the steps of the heat storage and pressure storage power generation cycle are: (A1) Open a heat energy inlet control valve 61 and a heat energy outlet control valve 62 and switch to a first heat storage pressure storage tank 21, now the first heat storage pressure storage tank 21 and the second heat storage pressure storage tank 22 have already A liquid first working fluid is stored, and the third heat storage and pressure storage tank 23 is an empty tank; (A2) The first heat storage and pressure storage tank 21 receives heat energy from a heat source 10, when a first working medium in the first heat storage and pressure storage tank 21 reaches the working pressure and temperature, the first working medium reaches the vaporization condition , open a first working fluid outlet control valve 63 and switch to the first heat storage and pressure storage tank 21, and open a first working fluid return port control valve 64 to switch to a third heat storage and pressure storage tank 23 to vaporize the The first working fluid flows through a first power generation device 41, and the first power generation device 41 is driven by the fluid kinetic energy of the vaporized first working fluid; (A3) switch the heat energy inlet control valve 61 and the heat energy outlet control valve 62 to a second heat storage pressure storage tank 22; (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the high temperature layer 401, the middle temperature layer 402 and the low temperature layer 403 or the middle temperature layer 402 and the low temperature layer 403 of the heat storage tank 40, and then flows into a water tower 30. After inflating an air bag 32 in the water tower 30, the liquid originally stored in the water tower 32 is driven out, and the fluid kinetic energy of the liquid is used to drive a second power generating device 31 to generate electricity for the first time; (B2) After the vaporized first working medium flows into a cooling tank 50, the vaporized first working medium is condensed back to a liquid state and returned to the third heat storage and pressure storage tank 23. When the first working medium is condensed back to a liquid state, the air bag 32 shrink, the liquid flows back into the water tower and simultaneously drives the second power generation device 31 to generate electricity for the second time, forming a first batch of power generation procedures. quality, and the first heat storage pressure storage tank 21 is an empty tank; (C1) closing the first working fluid return port control valve 64 and the first working fluid outlet control valve 63; (A4) The second heat storage and pressure storage tank 22 receives heat energy from the heat source 10, when a first working fluid in the second heat storage and pressure storage tank 22 reaches the working pressure and temperature, the first working fluid reaches the working condition of vaporization , open the first working fluid outlet control valve 63 and switch to the second heat storage pressure storage tank 22, and open a first working fluid return port control valve 64 to switch to a first heat storage pressure storage tank 21, and use the The fluid kinetic energy of the vaporized first working fluid drives the first power generation device 41; (A5) switch the heat energy inlet control valve 61 and the heat energy outlet control valve 62 to the third heat storage pressure storage tank 23; (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the high temperature layer 401, the middle temperature layer 402 and the low temperature layer 403 or the middle temperature layer 402 and the low temperature layer 403 of the heat storage tank 40, and then flows into the water tower 30. After inflating the air bag 32 in the water tower 30, drive the liquid originally stored in the water tower 30 to flow out, and use the fluid kinetic energy of the liquid to drive the second power generation device 31; (B2) The vaporized first working medium flows into the cooling tank 50 to condense the vaporized first working medium back to a liquid state and flow back to the first heat storage and pressure storage tank 21, and when the first working medium condenses back to a liquid state, the air bag 32 is contracted , the liquid flows back into the water tower 30 and at the same time drives the second power generation device 31 to generate power for the second time, forming a second batch of power generation procedures. At this time, the first heat storage and pressure storage tank 21 has stored the first liquid working medium , and the second heat storage and pressure storage tank 22 is an empty tank; (C1) closing the first working fluid return port control valve 64 and the first working fluid outlet control valve 63; (A6) The third heat storage and pressure storage tank 23 receives heat energy from the heat source 10, when a first working fluid in the third heat storage and pressure storage tank 23 reaches the working pressure and temperature, the first working fluid reaches the working condition of vaporization , open the first working fluid outlet control valve 63 and switch to the third heat storage and pressure storage tank 23, and open a first working fluid return port control valve 64 to switch to the second heat storage and pressure storage tank 22, using the vaporization The fluid kinetic energy of the first working medium drives a first power generation device 41; (A7) Switching the heat energy inlet control valve 61 and the heat energy outlet control valve 62 to the first heat storage and pressure storage tank 21; (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the high temperature layer 401, the middle temperature layer 402 and the low temperature layer 403 or the middle temperature layer 402 and the low temperature layer 403 of the heat storage tank 40, and then flows into the water tower 30. After inflating the air bag 32 in the water tower 30, drive the liquid originally stored in the water tower 30 to flow out, and use the fluid kinetic energy of the liquid to drive the second power generation device 31; (B2) The vaporized first working fluid flows into the cooling tank 50 to condense the vaporized first working fluid back to a liquid state and flow back to the second heat storage and pressure storage tank 22, and when the first working fluid condenses back to a liquid state, the air bag 32 shrinks , the liquid flows back into the water tower 30 and at the same time drives the second power generation device 31 to generate power for the second time, forming a third batch of power generation procedures. At this time, the second heat storage and pressure storage tank 22 has stored the liquid first working medium. And the third heat storage and pressure storage tank 23 is an empty tank; (C1) closing the first working fluid return port control valve 64 and the first working fluid outlet control valve 63; and (D) Repeating the aforementioned step (A1) to step (C1) for one heat storage and pressure storage power generation cycle.

A~D: steps A1~A7: Steps B1~B2: Steps C1: step 10: heat source 20: Heat storage and pressure storage unit 21: The first heat storage and pressure storage tank 22: Second heat storage and pressure storage tank 23: The third heat storage and pressure storage tank 30: Water Tower 31: The second power generation device 32: airbag 40: heat storage tank 401: high temperature layer 402: Mesosphere 403: low temperature layer 41: The first power generation device 42: Temperature control valve 43: Circulation return pipe 44: heat exchanger 46: heater 50: cooling tank 61: Thermal energy inlet control valve 62: Thermal energy export control valve 63: The first working fluid outlet control valve 64: The first working fluid return port control valve 70: Working fluid adjustment device

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of another implementation aspect of the embodiment of the present invention.

Fig. 3 is a schematic diagram of the heat storage and pressure storage unit of the present invention.

Fig. 4 is a cross-sectional view of an embodiment of the present invention.

Fig. 5 is a schematic diagram of steps of thermal cycle power generation according to an embodiment of the present invention.

6 to 8 are steps A1 to A7 of the embodiment of the present invention.

FIG. 9 shows steps B1 to B2 of the embodiment of the present invention.

FIG. 10 is step C1 of the embodiment of the present invention.

none

10: heat source

20: Heat storage and pressure storage unit

30: Water Tower

40: heat storage tank

41: The first power generation device

42: Temperature control valve

43: Circulation return pipe

50: cooling tank

70: Working fluid adjustment device

Claims (16)

A heat storage and pressure storage cycle power generation system, comprising: A heat storage and pressure storage unit, connected to a heat source, the thermal energy of the heat source is transferred to the heat storage and pressure storage unit, so that a first working fluid in the heat storage and pressure storage unit is heated and pressurized, and converted into a gaseous state when released; A first power generation device, receiving the high-temperature and high-pressure first working fluid released from the heat storage and pressure storage unit, and converting the fluid kinetic energy of the first working fluid into electrical energy; a heat storage tank, receiving the first working fluid flowing through the first power generation device, the first working fluid performs heat exchange and stores heat energy; a cooling tank, receiving the first working fluid from the heat storage tank, and transferring the first working fluid to the heat storage and pressure storage unit after undergoing a phase change; and A water tower is arranged between the heat storage tank and the cooling tank. The heat storage pressure storage cycle power generation system as described in Claim 1, wherein the heat storage tank and/or the cooling tank further has a second working fluid for pressurizing or depressurizing the liquid first working fluid. The heat storage pressure storage cycle power generation system as described in claim 1, wherein the heat storage tank has a plurality of heat exchangers inside. The heat storage pressure storage cycle power generation system as described in Claim 3, wherein a partial temperature control valve is arranged between the first power generation device and the heat storage tank. The heat storage pressure storage cycle power generation system as described in Claim 4, wherein a cycle return pipe is arranged between the first power generation device and the temperature division control valve. The heat storage pressure storage cycle power generation system as described in Claim 1, wherein the heat storage tank has a high temperature layer, a medium temperature layer and a low temperature layer. The heat storage and pressure storage cycle power generation system according to claim 1, wherein at least one heater is arranged inside the heat storage tank. The heat storage and pressure storage cycle power generation system as described in claim 1, wherein a plurality of control valves are arranged on the heat storage and pressure storage unit. The heat storage pressure storage cycle power generation system as described in Claim 1, wherein the heat storage pressure storage unit includes a first heat storage pressure storage tank, a second heat storage pressure storage tank and a third heat storage pressure storage tank, the control valves are To control the thermal energy entering and exiting the heat storage and pressure storage tanks and the first working fluid entering and exiting. The heat storage pressure storage cycle power generation system as described in Claim 9, wherein two of the heat storage pressure storage tanks store the first working fluid in a liquid state. The heat storage and pressure storage cycle power generation system as described in claim 9, further has at least one working fluid adjustment device disposed between the heat storage and pressure storage unit and the first power generation device or the cooling tank. The heat storage and pressure storage cycle power generation system as described in Claim 1, wherein a second power generation device is provided between the water tower and the cooling tank. The thermal storage and pressure storage cycle power generation system as described in Claim 1, wherein an air bag is arranged in the water tower. A control method for a heat storage and pressure storage cycle power generation system includes the following steps: (A) The heat storage and pressure storage unit receives heat energy from a heat source, so that a first working medium in the heat storage and pressure storage unit reaches the working pressure and temperature, and converts the first working medium into a vaporized first working medium, controlling the vaporized first working fluid to flow through the first power generation device to reach a heat storage tank, and using the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device to generate electricity; (B) After the vaporized first working medium is transferred to the heat storage tank for heat exchange, the vaporized first working medium flows into the cooling tank to condense back to the liquid first working medium, and the liquid first working medium is The substance is returned to the heat storage and pressure storage unit; (C) shutting down the thermal storage and pressure storage unit; and (D) Step (A) to step (C) are repeated at least once to form a heat storage pressure storage power generation cycle. The control method of the heat storage and pressure storage cycle power generation system as described in claim 14, wherein the step (B) also includes: (B1) Make the vaporized first working fluid flow into a water tower after passing through the heat storage tank, expand an airbag in the water tower, drive a liquid originally stored in the water tower to flow out, and use the fluid kinetic energy of the liquid to drive a the second power generating means to generate the first power; and (B2) When the first working medium is condensed back to liquid state, the air bag is deflated, and the liquid is returned to the water tower, and at the same time, the second power generation device is driven to generate electricity for the second time. The control method of heat storage pressure storage cycle power generation system according to claim 14, wherein the heat storage pressure storage unit has a first heat storage pressure storage tank, a second heat storage pressure storage tank and a third heat storage pressure storage tank, the step (A) also includes the following steps: (A1) Opening a heat energy inlet control valve and a heat energy outlet control valve and switching to the first heat storage and pressure storage tank; (A2) The first heat storage and pressure storage tank receives heat energy from a heat source. When the first working medium in the first heat storage and pressure storage tank reaches the working pressure and temperature to make the first working medium reach the working condition of vaporization, a The first working fluid outlet control valve is opened and switched to the first heat storage and pressure storage tank, and a first working fluid return port control valve is opened to switch to a third heat storage and pressure storage tank, so that the vaporized first working medium flows through a first power generation device, and utilize the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device; and (A3) Switching the thermal energy inlet control valve and the thermal energy outlet control valve to a second heat storage and pressure storage tank.

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