Photo-thermal circulation phase change energy storage and supply system

Abstract

The utility model relates to the technical field of solar energy utilization, and provides a photo-thermal circulation phase change energy storage and supply system which comprises a circulating pump, a solar heat collection component and a phase change energy storage and supply component which are sequentially communicated and form a loop. The top of the phase change energy storage and supply component is provided with a pressure reducing valve and a steam outlet which are communicated with the internal space of the phase change energy storage and supply component. The circulating pump is used for conveying saturated water stored in the phase change energy storage and supply part to the solar heat collection part; the solar heat collection component is used for collecting sunlight to heat saturated water flowing through the solar heat collection component so as to form superheated water, and the phase change energy storage and supply component is further used for storing the superheated water output from the solar heat collection component; the pressure reducing valve is used for reducing the pressure of the upper portion of the phase change energy storage and energy supply component when water vapor needs to be output, so that superheated water stored in the phase change energy storage and energy supply component is reduced to form water vapor, and the vapor outlet is used for being communicated with a user. The utility model aims to provide a photo-thermal circulation phase change energy storage and supply system capable of providing water vapor.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy utilization, and in particular to a photothermal cycle phase change energy storage and supply system. Background Art

[0002] Compared with other energy sources, solar energy is abundant, clean and harmless, and is an ideal energy source. For example, the use of fossil energy (such as oil, natural gas and coal) will lead to serious environmental pollution, such as smog, acid rain and global warming. Solar energy is a clean and pollution-free energy source. It does not produce harmful substances during use and is harmless to the environment. The use of solar energy can effectively reduce human dependence on fossil energy, thereby reducing environmental pollution. In addition, solar energy is an inexhaustible energy source. As long as the sun exists, humans can continue to use its energy. By using solar energy, we can improve the energy consumption structure and ease energy shortages. It has significant ecological, economic and social benefits. Therefore, with the advancement of technology, the application of solar energy is becoming more and more extensive.

[0003] At present, the utilization of solar energy mainly includes two methods: photothermal conversion and photoelectric conversion. Among them, photothermal conversion is the most direct and fastest way to utilize solar energy. The efficiency of photothermal conversion is relatively high, which can reach more than 80%, and it is suitable for occasions where energy does not need to be transported over long distances. Photothermal conversion converts sunlight into an energy form that people can directly use through direct heat exchange energy conversion.

[0004] In the existing technology, photothermal conversion mainly uses solar energy concentrating and collecting equipment. Among the application technologies of photothermal conversion, solar water heaters are a typical technical application. However, solar water heaters are used to provide domestic water and are not suitable for providing water vapor. Therefore, it is necessary to propose a photothermal cycle phase change energy storage and supply system that can provide water vapor. Utility Model Content

[0005] The main purpose of the utility model is to provide a photothermal cycle phase change energy storage and supply system capable of providing water vapor.

[0006] To achieve the above-mentioned purpose, the photothermal cycle phase-change energy storage and supply system proposed in the utility model comprises a circulation pump, a solar thermal collection component and a phase-change energy storage and supply component which are connected in sequence to form a loop; a pressure reducing valve and a steam outlet which are connected to the internal space of the phase-change energy storage and supply component are respectively arranged on the top of the phase-change energy storage and supply component, and the phase-change energy storage and supply component is used to store saturated water; the circulation pump is used to transport the saturated water stored in the phase-change energy storage and supply component to the solar thermal collection component; the solar thermal collection component is used to collect sunlight to heat the saturated water flowing through to form superheated water, and the phase-change energy storage and supply component is also used to store the superheated water output from the solar thermal collection component; the pressure reducing valve is used to reduce the pressure on the upper part of the phase-change energy storage and supply component when it is necessary to output water vapor, so that the superheated water stored in the phase-change energy storage and supply component is reduced in pressure to form water vapor, and the steam outlet is used to communicate with a user to provide water vapor to the user.

[0007] Preferably, the solar heat collection component comprises a solar heat collection plate and a heat collection tube for circulating saturated water, wherein the solar heat collection plate is used to collect sunlight and irradiate the collected sunlight onto the heat collection tube, thereby adding saturated water in the heat collection tube.

[0008] Preferably, the solar thermal collecting panel can be unfolded and folded to adjust the area for collecting sunlight.

[0009] Preferably, the internal space of the phase change energy storage and supply component includes a lower liquid storage space and an upper flash space, the liquid storage space is used to accommodate saturated water, the flash space is used to accommodate water vapor, the steam outlet is connected to the upper part of the flash space, and the liquid inlet of the circulating pump is connected to the lower part of the liquid storage space through a pipeline.

[0010] Preferably, the photothermal cycle phase change energy storage and supply system further comprises a water replenishment pump, the liquid inlet of the water replenishment pump is connected to the liquid storage space to supply saturated water into the liquid storage space.

[0011] Preferably, the phase-change energy storage and supply component is provided with a liquid level monitoring element and a pressure monitoring element, the liquid level monitoring element is used to measure the water level inside the phase-change energy storage and supply component, and the pressure monitoring element is used to measure the gas pressure in the flash space.

[0012] Preferably, the phase-change energy storage and supply component is further provided with a pressure relief port, the pressure relief port is communicated with the flash space, and a safety valve is provided at the pressure relief port.

[0013] Preferably, the liquid outlet of the circulation pump is connected to the liquid inlet of the solar thermal collection component through a pipeline, and the liquid outlet of the solar thermal collection component is connected to the upper part of the liquid storage space through a pipeline.

[0014] Preferably, the photothermal cycle phase change energy storage and supply system further includes a deoxygenation component, the liquid outlet of the deoxygenation component is connected to the liquid inlet of the water replenishment pump, and the liquid inlet of the deoxygenation component is used to connect to an external water source to input saturated water.

[0015] Preferably, the solar thermal collection component is any one of a Fresnel linear solar thermal system, a trough solar thermal system, a tower solar thermal system and a dish solar thermal system.

[0016] In the technical solution of the utility model, saturated water is stored inside the phase-change energy storage and supply component, the circulating pump extracts the saturated water in the phase-change energy storage and supply component and transmits the saturated water to the solar thermal collection component, the solar thermal collection component gathers the heat of sunlight and heats the saturated water flowing through the solar thermal collection component, the saturated water absorbs the heat of sunlight to become superheated water and then is transmitted to the inside of the phase-change energy storage and supply component, the pressure reducing valve is opened when water vapor is needed, the pressure inside the phase-change energy storage and supply component is suddenly reduced, part of the superheated water in the phase-change energy storage and supply component flashes to form saturated water vapor, and the water vapor is supplied to the user through the steam outlet;

[0017] In summary, by providing the circulation pump, the solar energy collection component and the phase change energy storage and supply component which are connected in sequence to form a loop, the solar energy collection component heats saturated water, which then enters the phase change energy storage and supply component, and when water vapor is needed, the pressure reducing valve of the phase change energy storage and supply component is opened, the pressure in the phase change energy storage and supply component is suddenly reduced, and part of the superheated water in the phase change energy storage and supply component flashes to form saturated water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the photothermal cycle phase change energy storage and supply system of the utility model.

[0020] Description of Figure Numbers:

[0021] 1-circulation pump; 2-solar thermal collection component; 21-controller; 3-phase change energy storage and supply component; 4-liquid level monitoring element; 5-pressure monitoring element; 6-safety valve; 7-steam outlet; 8-water supply pump; 9-deoxygenation component.

[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The utility model provides a photothermal cycle phase change energy storage and supply system.

[0029] Please refer to Figure 1The photothermal cycle phase-change energy storage and supply system comprises a circulation pump 1, a solar thermal collection component 2 and a phase-change energy storage and supply component 3 which are connected in sequence to form a loop; a pressure reducing valve and a steam outlet 7 which are connected to the internal space of the phase-change energy storage and supply component 3 are respectively arranged on the top of the phase-change energy storage and supply component 3, and the phase-change energy storage and supply component 3 is used to store saturated water; the circulation pump 1 is used to transport the saturated water stored in the phase-change energy storage and supply component 3 to the solar thermal collection component 2; the solar thermal collection component 2 is used to collect sunlight to heat the saturated water flowing through to form superheated water, and the phase-change energy storage and supply component 3 is also used to store the superheated water output from the solar thermal collection component 2; the pressure reducing valve is used to reduce the pressure on the upper part of the phase-change energy storage and supply component 3 when it is necessary to output water vapor, so that the superheated water stored in the phase-change energy storage and supply component 3 is reduced in pressure to form water vapor, and the steam outlet 7 is used to communicate with a user to provide water vapor to the user. The saturated water here refers to a state in which liquid water and steam are in dynamic equilibrium. In this state, the temperatures of liquid water and steam are the same, which is called the saturation temperature, and the pressure of the steam is called the saturation pressure; the circulating pump 1 extracts the saturated water in the phase change energy storage and supply component 3 and transports it to the solar thermal collection component 2. The solar thermal collection component 2 collects the heat of sunlight and heats the saturated water flowing through. The solar thermal collection component 2 can heat the saturated water to increase the temperature of the saturated water; in this embodiment, the phase change energy storage and supply component 3 is also provided with an insulation layer, which is coated on the outer wall of the phase change energy storage and supply component 3. The insulation layer is provided to insulate the saturated water inside the phase change energy storage and supply component 3.

[0030] Specifically, the thermal insulation layer can ensure that the heat loss of the saturated water in the phase-change energy storage and supply component 3 does not exceed 3% within 24 hours.

[0031] In the technical solution of the utility model, saturated water is stored inside the phase-change energy storage and supply component 3, the circulating pump 1 extracts the saturated water in the phase-change energy storage and supply component 3 and transmits the saturated water to the solar thermal collection component 2, the solar thermal collection component 2 collects the heat of sunlight and heats the saturated water flowing through the solar thermal collection component 2, the saturated water absorbs the heat of sunlight to become superheated water and then is transmitted to the inside of the phase-change energy storage and supply component 3, when water vapor is needed, the pressure reducing valve is opened, the pressure in the phase-change energy storage and supply component 3 is reduced, part of the superheated water in the phase-change energy storage and supply component 3 flashes to form saturated water vapor, and the vapor is supplied to the user through the vapor outlet 7;

[0032] In summary, by providing the circulation pump 1, the solar energy collection component 2 and the phase change energy storage and supply component 3 which are connected in sequence and form a loop, the solar energy collection component 2 heats the saturated water, which then enters the phase change energy storage and supply component 3, and when water vapor is needed, the pressure reducing valve of the phase change energy storage and supply component 3 is opened, the pressure in the phase change energy storage and supply component 3 is reduced, and part of the superheated water in the phase change energy storage and supply component 3 flashes to form saturated water vapor.

[0033] Preferably, the solar heat collection component 2 includes a solar heat collection panel and a heat collection pipe for circulating saturated water, wherein the solar heat collection panel is used to collect sunlight and irradiate the collected sunlight onto the heat collection pipe, thereby adding saturated water in the heat collection pipe. In this embodiment, the liquid inlet of the heat collection pipe is connected to the liquid outlet of the circulation pump 1 through a pipeline, and the liquid outlet of the heat collection pipe is connected to the internal space of the phase change energy storage and supply component 3 through a pipeline.

[0034] Preferably, the solar thermal collector can adjust the area of ​​sunlight collected. Specifically, the solar thermal collector can adjust the area of ​​sunlight collected by unfolding and folding, or adjust the area of ​​sunlight collected by adjusting the angle of the solar thermal collector facing the sun; the above unfolding, gathering, or adjusting the angle toward the sun can be achieved by manual adjustment. Of course, if automatic control is required, a controller 21 can also be provided to automatically adjust through the controller 21.

[0035] Furthermore, the solar thermal collection system further includes a controller 21, which is connected to the solar thermal collector panel to adjust the area of ​​the solar thermal collector panel collecting sunlight. The controller 21 is set to control the solar thermal collector panel to be able to unfold and fold, thereby adjusting the area of ​​the solar thermal collector panel receiving sunlight, so as to adjust the heating power of the solar thermal collector panel to the saturated water in the heat collection tube. Setting the controller 21 to perform the above-mentioned unfolding, gathering, or adjusting the angle toward the sun is a prior art and will not be described in detail here.

[0036] Preferably, the internal space of the phase change energy storage and supply component 3 includes a liquid storage space at the bottom and a flash space at the top, the liquid storage space is used to accommodate saturated water, the flash space is used to accommodate water vapor, the steam outlet 7 is connected to the upper part of the flash space, and the liquid inlet of the circulating pump 1 is connected to the lower part of the liquid storage space through a pipeline.

[0037] Preferably, the photothermal cycle phase change energy storage and supply system further comprises a water replenishment pump 8, the liquid inlet of the water replenishment pump 8 is connected to the liquid storage space to deliver saturated water into the liquid storage space. The water replenishment pump 8 is arranged to deliver saturated water into the liquid outlet space to compensate for the saturated water in the phase change energy storage and supply component 3 that has been transformed into water vapor.

[0038] Preferably, the phase-change energy storage and supply component 3 is provided with a liquid level monitoring element 4 and a pressure monitoring element 5. The liquid level monitoring element 4 is used to measure the water level inside the phase-change energy storage and supply component 3, and the pressure monitoring element 5 is used to measure the gas pressure in the flash space. The liquid level monitoring element 4 is a liquid level gauge, and the pressure monitoring element 5 is a pressure gauge. When the operator sees that the liquid level in the phase-change energy storage and supply component 3 is lower than the first set liquid level, the operator adjusts the water replenishment pump 8 to increase the power to increase the rate of inputting saturated water into the phase-change energy storage and supply component 3. When the operator sees that the liquid level in the phase-change energy storage and supply component 3 is higher than the second set liquid level, the operator adjusts the water replenishment pump 8 to reduce the power to reduce the rate of inputting saturated water into the phase-change energy storage and supply component 3, thereby ensuring that the liquid level in the phase-change energy storage and supply component 3 is maintained at the first set liquid level. Between a set liquid level and a second set liquid level, the first set liquid level is lower than the second set liquid level; of course, liquid level regulation can also be achieved through automatic control, for example, the water make-up pump 8 is connected to the liquid level monitoring element 4, the water make-up pump receives the liquid level data of the liquid level monitoring element 4, and the water make-up pump 8 automatically adjusts power according to the liquid level in the phase change energy storage supply component 3 to ensure that the liquid level in the phase change energy storage supply component 3 is maintained within the set range. The water make-up pump 9 automatically adjusts the power according to the liquid level in the container, which is a prior art and will not be elaborated here.

[0039] Specifically, the first set liquid level is 70% of the total liquid level of the phase-change energy storage and supply component 3 , and the second set liquid level is 90% of the total liquid level of the phase-change energy storage and supply component 3 .

[0040] Preferably, the phase-change energy storage and supply component 3 is also provided with a pressure relief port, which is in communication with the flash evaporation space, and a safety valve 6 is provided at the pressure relief port. The safety valve 6 is provided to open and release pressure when the internal pressure of the phase-change energy storage and supply component 3 is too high, so that the pressure of the phase-change energy storage and supply component 3 is maintained within a normal range; when the operator sees that the pressure value of the pressure monitoring element 5 is higher than the first set pressure, the safety valve 6 is opened to release pressure, and the safety valve 6 is closed after the pressure value of the pressure monitoring element 5 is lower than the first set pressure. Of course, if automatic control is required, the opening and closing of the safety valve 6 can also be achieved through automatic control. For example, the pressure monitoring element 5 is connected to the safety valve 6, and the safety valve 6 is used to receive the pressure data of the pressure monitoring element 5, and when the pressure value of the pressure monitoring element 5 is higher than the first set pressure, it is opened to release the pressure until the pressure value of the pressure monitoring element 5 is lower than the first set pressure and then closed; the safety valve 6 monitors the pressure in the phase change energy storage supply component 3 through the pressure detection element 5, and automatically releases the pressure when the pressure in the phase change energy storage supply component 3 exceeds the set pressure. This is a common technical means in the field and will not be elaborated here.

[0041] Specifically, when the operator sees that the pressure value of the pressure monitoring element 5 is higher than the second set pressure, the operator can manually operate the solar thermal collection component 2 to reduce the focusing and heat collection area of ​​the solar thermal collection plate of the solar thermal collection component 2 to maintain the operating pressure of the phase change energy storage and supply component 3 not exceeding the first set pressure; of course, the focusing and heat collection area of ​​the solar thermal collection plate of the solar thermal collection component 2 can also be automatically controlled. For example, the pressure monitoring element 5 is also connected to the controller 21, and the controller 21 is used to receive the pressure data of the pressure monitoring element 5, and when the pressure value of the pressure monitoring element 5 is higher than the second set pressure, reduce the focusing and heat collection area of ​​the solar thermal collection plate of the solar thermal collection component 2 to maintain the operating pressure of the phase change energy storage and supply component 3 not exceeding the first set pressure.

[0042] Furthermore, the first set pressure is 3.82 MPa, the second set pressure is 3.44 MPa, and the safety valve 6 is a balanced bellows type safety valve 6 .

[0043] Preferably, the liquid outlet of the circulation pump 1 is connected to the liquid inlet of the solar heat collecting component 2 through a pipeline, and the liquid outlet of the solar heat collecting component 2 is connected to the upper part of the liquid storage space through a pipeline. The liquid outlet of the solar heat collecting component 2 is connected to the upper part of the liquid storage space through a pipeline to prevent the saturated water discharged from the solar heat collecting component 2 from directly passing through the flash space and affecting the steam generation in the flash space.

[0044] Preferably, the photothermal cycle phase-change energy storage and supply system further includes a deoxygenation component 9, the liquid outlet of the deoxygenation component 9 is connected to the liquid inlet of the water replenishment pump 8, and the liquid inlet of the deoxygenation component 9 is used to communicate with an external water source. The deoxygenation component 9 is provided to first remove oxygen and other gases dissolved in the external water source, and then input them into the liquid storage space through the water replenishment pump 8, so as to avoid the saturated water supplied by the external water source from corroding various components and pipelines in the photothermal cycle phase-change energy storage and supply system; in this embodiment, the liquid inlet of the deoxygenation component 9 is connected to the water storage tank.

[0045] Preferably, the solar thermal collection component 2 is any one of a Fresnel linear solar thermal system, a trough solar thermal system, a tower solar thermal system and a dish solar thermal system. In this embodiment, the operating pressure of the solar thermal collection component 2 and the pipeline in the solar thermal cycle phase change energy storage and supply system is less than or equal to 3.82MPa, and the operating temperature is less than or equal to 250°C. The system operates at a lower pressure and temperature, which can reduce the process requirements of the solar thermal cycle phase change energy storage and supply system for each component and pipeline, thereby reducing the manufacturing and maintenance costs of each component and pipeline of the solar thermal cycle phase change energy storage and supply system, and reducing the probability of leakage of each component and pipeline in the solar thermal cycle phase change energy storage and supply system due to high temperature and high pressure, thereby improving the safety of the solar thermal cycle phase change energy storage and supply system.

[0046] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A photothermal cycle phase change energy storage and supply system, characterized in that: The invention comprises a circulation pump (1), a solar heat collection component (2) and a phase change energy storage and supply component (3) which are connected in sequence to form a loop; the top of the phase change energy storage and supply component (3) is respectively provided with a pressure reducing valve and a steam outlet (7) which are connected to the internal space of the phase change energy storage and supply component (3); the phase change energy storage and supply component (3) is used to store saturated water; the circulation pump (1) is used to transport the saturated water stored in the phase change energy storage and supply component (3) to the solar heat collection component (2); the solar heat collection component (2) is used to collect sunlight to heat the saturated water flowing through to form superheated water; the phase change energy storage and supply component (3) is also used to store the superheated water output from the solar heat collection component (2); the pressure reducing valve is used to reduce the pressure on the upper part of the phase change energy storage and supply component (3) when it is necessary to output water vapor, so that the superheated water stored in the phase change energy storage and supply component (3) is reduced in pressure to form water vapor; the steam outlet (7) is used to communicate with a user to provide water vapor to the user.

2. According to claim 1, the photothermal cycle phase change energy storage and supply system is characterized in that: The solar heat collection component (2) comprises a solar heat collection plate and a heat collection pipe for circulating saturated water. The solar heat collection plate is used to collect sunlight and irradiate the collected sunlight onto the heat collection pipe, thereby adding saturated water in the heat collection pipe.

3. According to claim 2, the photothermal cycle phase change energy storage and supply system is characterized in that: The solar thermal collecting panel can be unfolded and retracted to adjust the area for collecting sunlight.

4. According to claim 1, the photothermal cycle phase change energy storage and supply system is characterized in that: The internal space of the phase-change energy storage and supply component (3) comprises a liquid storage space at a lower portion and a flash evaporation space at an upper portion, wherein the liquid storage space is used to contain saturated water, and the flash evaporation space is used to contain water vapor, the vapor outlet (7) is connected to the upper portion of the flash evaporation space, and the liquid inlet of the circulation pump (1) is connected to the lower portion of the liquid storage space via a pipeline.

5. The photothermal cycle phase change energy storage and supply system according to claim 4 is characterized in that: It also comprises a water replenishment pump (8), the liquid inlet of the water replenishment pump (8) being in communication with the liquid storage space so as to supply saturated water into the liquid storage space.

6. The photothermal cycle phase change energy storage and supply system according to claim 4 is characterized in that: The phase-change energy storage and supply component (3) is provided with a liquid level monitoring element (4) and a pressure monitoring element (5), wherein the liquid level monitoring element (4) is used to measure the water level inside the phase-change energy storage and supply component (3), and the pressure monitoring element (5) is used to measure the gas pressure in the flash space.

7. The photothermal cycle phase change energy storage and supply system according to claim 4 is characterized in that: The phase-change energy storage and supply component (3) is also provided with a pressure relief port, the pressure relief port is in communication with the flash evaporation space, and a safety valve (6) is provided at the pressure relief port.

8. The photothermal cycle phase change energy storage and supply system according to claim 4 is characterized in that: The liquid outlet of the circulation pump (1) is connected to the liquid inlet of the solar heat collection component (2) through a pipeline, and the liquid outlet of the solar heat collection component (2) is connected to the upper part of the liquid storage space through a pipeline.

9. The photothermal cycle phase change energy storage and supply system according to claim 5, characterized in that: It also comprises a deoxygenating component (9), the liquid outlet of the deoxygenating component (9) is connected to the liquid inlet of the water replenishment pump (8), and the liquid inlet of the deoxygenating component (9) is used to be connected to an external water source to input saturated water.

10. The photothermal cycle phase change energy storage and supply system according to any one of claims 1 to 9, characterized in that: The solar thermal collection component (2) is any one of a Fresnel linear thermal system, a trough thermal system, a tower thermal system and a dish thermal system.

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