TWI834172B - Heat storage and pressure storage cycle power generation system and control method thereof - Google Patents

Abstract

A heat storage and pressure storage cycle power generation system, including a heat storage and pressure storage unit connected to a heat source. The heat source absorbs and transmits thermal energy to the heat storage and pressure storage unit to heat and pressurize a first working fluid in the heat storage and pressure storage unit before conversion. 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 power generation device flowing through the first power generation device. The first working fluid of the device is used to perform heat exchange and store thermal energy, and a cooling tank receives the first working fluid from the heat storage tank, and causes the first working fluid to change its phase state into a liquid state and then transfers it to the heat storage tank. The pressure storage unit forms a cycle.

Description

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

The invention discloses a heat storage and pressure storage cycle power generation system that converts thermal energy into electrical energy.

The Republic of China Patent Publication No. TW202037860 applied by the applicant discloses a heat pipe type power-generating water heater system including: at least one heat pipe body to provide a working fluid flow pipe, heat conduction and other devices, and at least one first power generation device is provided in The flow pipes of the heat pipe body are used to convert the fluid kinetic energy of the working medium into electrical 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 thermal energy to provide hot water.

Previous technologies aimed at using solar energy, waste heat from electrical appliances, or small temperature differences to generate electricity and store thermal energy. However, the heat pipes in the original structural design could withstand limited pressure, which limited the selection of working fluids and power generation efficiency.

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. The heat energy of the heat source is transmitted to the heat storage and pressure storage unit to heat and increase the temperature of a first working fluid in the heat storage and pressure storage unit. The pressure is converted 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 unit The tank receives the first working fluid flowing through the first power generation device and stores the thermal energy generated when the first working fluid performs heat exchange. A cooling tank receives the first working fluid from the heat storage tank and makes the The first working fluid undergoes a phase change and is then transferred to the heat storage and pressure storage unit, and a water tower is disposed 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 and speed up the heat exchange, and allows 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 isolating and reducing heat 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 flows back to the heat storage and pressure storage unit.

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

Preferably, a temperature control valve is disposed between the first power generation device and the heat storage tank. The first working fluid flows through the first power generation device to generate electricity and then flows through the temperature control valve. The temperature control valve According to the temperature of the waste heat after power generation of the first working fluid, the first working fluid is controlled to flow into the high-temperature layer or the medium-low temperature layer for heat exchange, thereby maintaining the temperature of the high-temperature layer to maintain the benefits of energy storage and nighttime power generation.

Preferably, there is also a circulation return pipe disposed between the first power generation device and the temperature control valve to facilitate continuous operation of the first power generation device with flywheel blades.

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

There are also a plurality of control valves arranged in the heat storage and pressure storage unit, including 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. Port control valves, these control valves are used to control the inlet and outlet of thermal energy and the inlet and outlet 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 thermal storage and pressure storage tanks of the thermal storage and pressure storage unit store the liquid first working fluid, thereby reducing the time to wait for the first working fluid to heat up and the thermal storage and pressure storage tanks to cool down. Improve power generation efficiency.

Preferably, the present invention also has a working fluid adjustment device disposed between the heat storage and pressure storage unit and the first power generation device or the cooling tank. When a change in external ambient temperature is detected, the second working fluid adjustment device will be adjusted. The basic pressure of the system maintained by the mass is changed to improve the cycle efficiency by changing the condensation temperature of the first working fluid.

Preferably, the present invention also has a liquid level detector disposed in the heat storage tank. When detecting that the first working fluid is insufficient, the working fluid adjusting device will be turned on to replenish the first working fluid to allow the first working fluid to flow. Mass flow for thermal circulation.

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 fluid flows into the air bag of the water tower and expands the air bag, the water originally stored in the water tower is The liquid flows out and drives the second power generation device. When the first working fluid condenses and flows out of the cooling tank, the air bag shrinks. At this time, the liquid flows back into the water tower and drives the second power generation device again, thereby generating more efficient power.

The invention also includes a control method for a heat storage and pressure storage cycle thermal power generation system, which includes the following steps: (A) opening a heat storage and pressure storage unit and receiving thermal energy from a heat source, so that a first working device in the heat storage and pressure storage unit When the fluid reaches the working pressure and temperature, the first working fluid is converted into the vaporized first working fluid. The vaporized first working fluid is controlled to flow through a first power generation device and then reaches a heat storage tank, and the vaporized first working fluid is utilized. The fluid kinetic energy of the first working fluid drives the first power generation device to generate electricity; (B) After the vaporized first working fluid is transferred to the heat storage tank for heat exchange, the vaporized first working fluid flows into a cooling tank to condense back to the liquid first working fluid, and the liquid first working fluid is Return the mass to the heat storage and pressure storage unit; (C) close the heat storage and pressure storage unit; and (D) repeat steps (A) to (C) at least once to form a heat storage and pressure storage power generation cycle.

Preferably, step (A) also includes the following steps: (A1) Open a thermal energy inlet control valve and a thermal energy outlet control valve and switch to a first thermal energy storage and pressure storage tank; (A2) The first thermal energy storage and pressure storage tank Receive thermal energy from a heat source, and when the first working fluid in the first heat storage pressure storage tank reaches the working pressure and temperature so that the first working fluid reaches the vaporization working condition, a first working fluid outlet control valve is opened and switched to the first heat storage and pressure storage tank, and open a first working fluid return port control valve to switch to a third heat storage and pressure storage tank, so that the vaporized first working fluid flows through a first power generation device, and utilizes the vaporized first working fluid to flow through a first power generation device. The fluid kinetic energy of the first working fluid drives the first power generation device; and (A3) switch 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) flowing the vaporized first working fluid into an air bag in a water tower through the heat storage tank, inflating the air bag, and driving the original working fluid stored in the water tower. A liquid flows out of the water tower, and the fluid kinetic energy of the liquid is used to drive a second power generation device to generate electricity for the first time; and (B2) when the first working fluid condenses back to the liquid state, the air bag is deflated, and the liquid returns to the water tower. At the same time, the second power generation device is driven to generate electricity for the second time.

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:Second power generation device

32:Air bag

40:Heat storage tank

401:High temperature layer

402:Mesosphere

403: Low temperature layer

41: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 outlet control valve

63: First working fluid outlet control valve

64: First working fluid return port control valve

70: Working fluid adjustment device

Figure 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.

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

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

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

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

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

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

In order to clearly illustrate the specific implementation, structure and achieved effects of the present invention, the description is as follows with reference to the drawings: Please refer to Figure 1 which is a schematic diagram of a first implementation mode of a heat storage and pressure storage cycle power generation system, including a connection of a heat storage and pressure storage unit 20 A heat source 10. The thermal energy of the heat source 10 is transmitted to the heat storage and pressure storage unit 20 to heat and pressurize a first working fluid in the heat storage and pressure storage unit 20 and convert it into a gaseous state when released. A first power generation device 41 receives The high-temperature and high-pressure first working fluid is released from the heat storage and pressure storage unit 20 and converts the fluid kinetic energy of the first working fluid into electrical energy. A heat storage tank 40 receives the first working fluid flowing through the first power generation device 41. The first working fluid is heat exchanged to store thermal energy, and a cooling tank 50 receives the first working fluid from the heat storage tank 40 and causes the first working fluid to change its phase state into a liquid state and then transfers it to The heat storage and pressure storage unit 20 forms 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. The second working fluid is used to process the liquid first working fluid. pressure or Pressure reduction is to use the pressure generated by the second working fluid to control the temperature point at which the first working fluid undergoes phase change.

Please refer to FIG. 2 , which is a schematic diagram of a second embodiment of the heat storage and pressure storage cycle power generation system. In the second embodiment, a water tower 30 is provided between the heat storage tank 40 and the cooling tank 50 . The water tower 30 has an internal There is an air bag 32, and a second power generation device 31 is provided between the water tower 30 and the cooling tank 50. When the first working fluid flows into the air bag 32 of the water tower 30 to expand the air bag 32, the original working fluid stored in the water tower 30 is The liquid inside flows out and thereby drives the second power generation device 31. When the first working fluid is condensed and flows out of the cooling tank 50, the air bag 32 shrinks. At this time, the liquid flows back into the water tower 30 and drives the second power generation device 31 again, thereby Produce more efficient power generation. In this embodiment, the second power generation device 31 is a water turbine generator.

Please refer to Figure 3. The present invention also has a plurality of control valves arranged in the heat storage and pressure storage unit 20. 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. Heat storage and pressure storage tank 23, these 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. The valve is used to control the inlet and outlet of thermal energy and the inlet and outlet of the first working fluid in 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 one is an empty tank. When the first working fluid in one of the heat storage and pressure storage tanks vaporizes, it flows through the first power generation unit. The device 41, the heat storage tank 40, the water tower 30 and the cooling tank 50 will be stored in the empty tank, so that the heat storage and pressure storage tank that originally stored the first working fluid forms an empty tank to store the first working fluid in the next cycle. The heat storage and pressure storage tank of the working fluid can reduce the time of 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.

Please refer to Figure 4. The heat storage tank 40 has a high temperature layer 401, a medium temperature layer 402 and a low temperature layer 403. 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. The effect of this is 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 Heat exchange is performed 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 night use or as a backup.

In order to balance the power grid and obtain the benefits of the electricity price difference, in other embodiments, two heaters 46 can be installed in the heat storage tank 40 and located in the high-temperature layer 401 and the medium-temperature layer 402 respectively, so as to utilize the lower price. Off-peak power or excess green power is used for high-temperature heat storage, and the stored heat energy is used to generate electricity during peak power consumption periods with higher prices to balance the power grid and achieve profitability.

In the second embodiment, there is also a 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 heat storage tank 40. The temperature control valve 42 controls the first working fluid to flow into the high temperature layer 401 or the middle and low temperature layers 402 and 403 according to the temperature of the waste heat after power generation for heat exchange, thereby maintaining the temperature of the high temperature layer 401. To maintain the efficiency of nighttime power generation and energy storage.

A circulation return pipe 43 is also provided between the first power generation device 41 and the temperature 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 performing heat exchange in the heat storage tank 40 . 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 the second 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 the second embodiment, there is also a working medium 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). 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 opened to replenish the first working fluid. Or when a change in external ambient temperature is detected, the working fluid adjusting device 70 will adjust the second working fluid to maintain the system base pressure to change the condensation temperature of the first working fluid to improve cycle efficiency.

Referring to Figures 5 to 10, the present invention also provides a control method for a 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, and the first working fluid reaches the vaporization working condition and is converted into vaporization. The first working fluid is controlled to flow through the first power generation device 41 into a heat storage tank 40 , and the fluid kinetic energy of the vaporized first working fluid is used to drive the first power generation device 41 Generate electricity; (B) After the vaporized first working fluid is transferred to the heat storage tank 40 for heat exchange, the vaporized first working fluid flows into the cooling tank 50 to condense back to the liquid first working fluid, and the The liquid first working fluid returns to the heat storage and pressure storage unit 20; (C) closes the heat storage and pressure storage unit 20; and (D) repeats steps (A) to (C) at least once to form a heat storage and pressure storage power generation cycle.

In this embodiment, steps A1 to A7, B1 to B3 and C1 are included to form a more efficient cycle of power generation. The steps of the heat storage and pressure power generation cycle are: (A1) Open a thermal energy inlet The control valve 61 and a thermal energy outlet control valve 62 are switched to a first heat storage and pressure storage tank 21. At this time, the first heat storage and pressure storage tank 21 and the second heat storage and pressure storage tank 22 have stored a liquid first working fluid. , and the third thermal storage and pressure storage tank 23 is an empty tank; (A2) the first thermal storage and pressure storage tank 21 receives thermal energy from a heat source 10, when a first working fluid in the first thermal storage and pressure storage tank 21 reaches The working pressure and temperature are such that the first working fluid reaches the vaporization condition, a first working fluid outlet control valve 63 is opened and switched to the first heat storage and pressure storage tank 21, and a first working fluid return port control valve 64 is opened. Switch to a third heat storage and pressure storage tank 23 to allow the vaporized first working fluid to flow through a first power generation device 41, and utilize the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device 41; (A3 ) Switch the thermal energy inlet control valve 61 and the thermal energy outlet control valve 62 to a second heat storage and pressure storage tank 22; (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the heat storage tank 40 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 then flow into a gas in a water tower 30. In the bag 32, after the air bag 32 is inflated, the liquid originally stored in the water tower 30 is driven out, and the fluid kinetic energy of the liquid is used to drive a second power generation device 31 to generate electricity for the first time; (B2) the vaporized first working fluid flows in A cooling tank 50 then condenses the vaporized first working fluid back into a liquid state and flows back to the third heat storage and pressure storage tank 23. When the first working fluid is condensed back into a liquid state, the air bag 32 is deflated, and the liquid flows back into the water tower 30. At the same time, the second power generation device 31 is driven to generate power for the second time to form a first batch of power generation process. At this time, the liquid first working fluid is stored in the third heat storage and pressure storage tank 23, and the first heat storage and pressure storage tank 23 has a liquid first working fluid. The tank 21 is an empty tank; (C1) close 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 the thermal energy from the heat source 10, When a first working fluid in the second heat storage pressure storage tank 22 reaches the working pressure and temperature so that the first working fluid reaches the vaporization working condition, the first working fluid outlet control valve 63 is opened and switched to the second heat storage tank 22 . Pressure storage tank 22, and open a first working fluid return port control valve 64 to switch to a first thermal storage pressure storage tank 21, and use the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device 41; (A5) Switch the thermal energy inlet control valve 61 and the thermal energy outlet control valve 62 to the third heat storage and pressure storage tank 23; (B1) the vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the heat storage tank 40 The high temperature layer 401, the medium temperature layer 402 and the low temperature layer 403 or the medium temperature layer 402 and the low temperature layer 403 then flow into the air bag 32 in the water tower 30. After the air bag 32 in the water tower 30 is expanded, the water tower is driven to be stored. 30 liquid flows out, and the fluid kinetic energy of the liquid is used 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 into a liquid state and flow back to the first heat storage The pressure storage tank 21 shrinks the air bag 32 when the first working fluid condenses back to the liquid state, and the liquid flows back into the water tower 30 and drives the second power generation device 31 to generate electricity for the second time, forming a second batch power generation process. At this time, the first heat storage and pressure storage tank 21 has stored the liquid first working fluid, and the second heat storage and pressure storage tank 22 is empty; (C1) Close 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 the thermal energy from the heat source 10. When the third heat storage and pressure storage tank 23 When a first working fluid in the pressure tank 23 reaches the working pressure and temperature so that the first working fluid reaches the vaporization working condition, the first working fluid outlet control valve 63 is opened and switched 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, and use the fluid kinetic energy of the vaporized first working fluid to drive a first power generation device 41; (A7) open the thermal energy inlet control valve 61 And the thermal energy outlet control valve 62 is switched 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 and the middle temperature layer of the heat storage tank 40 402 and the low-temperature layer 403 or the medium-temperature layer 402 and the low-temperature layer 403 then flow into the air bag 32 in the water tower 30. After the air bag 32 in the water tower 30 is expanded, the liquid originally stored in the water tower 30 is driven out. The fluid kinetic energy of the liquid drives the second power generation device 31; (B2) the vaporized first working fluid flows into the cooling tank 50, causing the vaporized first working fluid to condense back into a liquid state and flow back to the second heat storage and pressure storage tank 22. When the When the first working fluid condenses back to the liquid state, the air bag 32 shrinks, and the liquid flows back into the water tower 30 and drives the second power generation device 31 to generate electricity for the second time, forming a third batch power generation process. At this time, the second thermal storage The pressure tank 22 has stored the liquid first working fluid, and the third thermal storage pressure tank 23 is an empty tank; (C1) close the first working fluid return port control valve 64 and the first working fluid outlet control valve 63; and (D) repeating the aforementioned steps (A1) to (C1) to form a heat storage and pressure storage power generation cycle.

10:Heat source

20: Heat storage and pressure storage unit

30:Water Tower

40:Heat storage tank

41:First power generation device

42:Temperature control valve

43: Circulation return pipe

50: Cooling tank

70: Working fluid adjustment device

Claims (15)

A heat storage and pressure storage cycle power generation system includes: a heat storage and pressure storage unit connected to a heat source. The heat energy of the heat source is transmitted to the heat storage and pressure storage unit to heat and pressurize a first working fluid in the heat storage and pressure storage unit. Converted into a gaseous state when released; a first power generation device that 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; a heat storage tank , receiving the first working fluid flowing through the first power generation device, the first working fluid performs heat exchange and storing thermal energy; a cooling tank, receiving the first working fluid from the heat storage tank, and causing the first The working fluid undergoes a phase change and is then transferred to the heat storage and pressure storage unit; a water tower is provided between the heat storage tank and the cooling tank; and a second power generation device is provided between the water tower and the cooling tank. The heat storage and pressure storage cycle power generation system as claimed 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 and 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 and pressure storage cycle power generation system according to claim 3, wherein a temperature control valve is provided between the first power generation device and the heat storage tank. The heat storage and pressure storage cycle power generation system according to claim 4, wherein a circulation return pipe is provided between the first power generation device and the temperature dividing control valve. The heat storage and 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 provided inside the heat storage tank. The heat storage and pressure storage cycle power generation system according to claim 1, wherein a plurality of control valves are provided in the heat storage and pressure storage unit. The heat storage and pressure storage cycle power generation system as described in claim 1, wherein the heat storage and pressure storage unit includes 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, and the control valves are used for To control the thermal energy ingress and egress of the heat storage and pressure storage tanks and the ingress and egress of the first working fluid. The heat storage and pressure storage cycle power generation system as described in claim 9, wherein two of the heat storage and pressure storage tanks store the liquid first working fluid. The heat storage and pressure storage cycle power generation system according to claim 9, further comprising at least one working medium 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 an air bag is provided in the water tower. A control method for a heat storage and pressure storage cycle power generation system as described in claim 1, which includes the following steps: (A) a heat storage and pressure storage unit receives thermal energy from a heat source, causing a first working device in the heat storage and pressure storage unit to When the fluid reaches the working pressure and temperature, the first working fluid is converted into the vaporized first working fluid. The vaporized first working fluid is controlled to flow through a first power generation device and then reaches a heat storage tank, and utilizes the vaporized first working fluid. The fluid kinetic energy of the first working fluid drives the first power generation device to generate electricity; (B) after the vaporized first working fluid is transferred to the heat storage tank for heat exchange, the vaporized first working fluid flows into a cooling tank Condensing the first working fluid back to the liquid state, and returning the liquid first working fluid to the heat storage and pressure storage unit; (C) Turn off the heat storage and pressure storage unit; and (D) Repeat steps (A) to step (C) at least once to form a heat storage and pressure storage power generation cycle. The control method of the heat storage and pressure storage cycle power generation system as described in claim 13, wherein the step (B) also includes: (B1) causing the vaporized first working fluid to flow into an air bag in a water tower after passing through the heat storage tank. After the air bag is inflated, a liquid originally stored in the water tower is driven out, and the fluid kinetic energy of the liquid is used to drive a second power generation device to generate electricity for the first time; and (B2) when the first working fluid condenses back to a liquid state When the airbag is deflated, the liquid returns to the water tower and drives the second power generation device to generate electricity for the second time. The control method of the heat storage and pressure storage cycle power generation system as described in claim 13, wherein the heat storage and pressure storage unit has 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. This step (A) also includes the following steps: (A1) Open a thermal energy inlet control valve and a thermal energy outlet control valve and switch to the first thermal energy storage and pressure storage tank; (A2) The first thermal energy storage and pressure storage tank receives heat from a heat source. Thermal energy, when the first working fluid in the first heat storage pressure storage tank reaches the working pressure and temperature so that the first working fluid reaches the vaporization working condition, a first working fluid outlet control valve is opened and switched to the first heat storage tank. Pressure storage tank, and open a first working fluid return port control valve to switch to a third heat storage pressure storage tank, so that the vaporized first working fluid flows through a first power generation device, and utilizes the vaporized first working fluid The fluid kinetic energy drives the first power generation device; and (A3) switches the thermal energy inlet control valve and the thermal energy outlet control valve to a second thermal energy storage tank.

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