Heat storage performance test system and test method
By designing a multi-flow thermal storage performance testing system, the problem of insufficient applicability of existing systems was solved, enabling comprehensive testing of different thermal storage devices and improving the accuracy and versatility of the tests.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA ENERGY INVESTMENT CORP LTD
- Filing Date
- 2024-11-27
- Publication Date
- 2026-05-29
AI Technical Summary
Existing thermal energy storage equipment performance testing systems lack diverse testing applicability, cannot be applied to different types of thermal energy storage equipment, and have overly specific requirements for heat exchange media, resulting in insufficient versatility and accuracy of the testing systems.
A thermal storage performance testing system was designed, including a first flow path, a second flow path, and a third flow path, which are used to input and output different types of heat exchange media, respectively. The system monitors heat exchange parameters in real time through a measuring component, enabling performance testing of thermal storage equipment under different operating conditions and reducing specific requirements on the heat exchange media.
It improves the versatility and applicability of the testing system, ensures the accuracy and reliability of performance evaluation, and can adapt to the testing needs of various heat exchange scenarios.
Smart Images
Figure CN122108648A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the technical field of thermal energy storage performance testing, specifically to a thermal energy storage performance testing system and testing method. Background Technology
[0002] Performance testing of thermal storage equipment is a crucial step in verifying equipment quality. If the thermal storage equipment lacks sufficient heat storage capacity after being put into use, it will be unable to meet heating demands. Current testing systems typically only target single testing scenarios, lacking applicability testing for other temperature ranges or different operating conditions, thus failing to meet diverse testing needs. For example, patent application CN202010093415.3 provides a performance testing system for thermal storage equipment using steam as the working medium. This system, designed to test and evaluate the heat storage performance of steam-based thermal storage equipment, is only applicable to steam-based thermal storage equipment and lacks applicability to other heat transfer media or thermal storage equipment, failing to provide a universal testing solution for various types of thermal storage equipment. Summary of the Invention
[0003] The purpose of this disclosure is to provide a thermal storage performance testing system and method that can at least partially solve the technical problems existing in the related art.
[0004] To achieve the above objectives, this disclosure provides a thermal storage performance testing system, comprising: The first flow path is used to input the first heat exchange medium into the thermal storage device to be tested; The second flow path is used to input the second heat exchange medium into the thermal storage device; A third flow path is used to discharge the first and second heat exchange media that have completed heat exchange with the thermal storage device; and The first measuring component is used to measure the changes in parameters of the first and second heat exchange media before and after heat exchange with the thermal storage device.
[0005] Optionally, the first flow path includes: The thermal management unit is used to output the first heat exchange medium; A burner, connected to the thermal management unit, is used to increase the temperature of the first heat exchange medium; and A first heat exchanger is connected between the burner and the heat storage device for regulating the temperature of the first heat exchange medium supplied to the heat storage device.
[0006] Optionally, it also includes a first branch, the inlet end of which is connected to the pipe sidewall between the thermal storage device and the first heat exchanger, and the outlet end of which is connected to the pipe sidewall between the thermal storage device and the third flow path.
[0007] Optionally, the second flow path includes: A fan is used to transport the second heat exchange medium; and A second heat exchanger is installed between the fan and the heat storage device to regulate the temperature of the heat storage medium before delivering it to the heat storage device.
[0008] Optionally, it also includes a second branch, the inlet end of which is connected to the pipe sidewall between the second heat exchanger and the heat storage device, and the outlet end of which is connected to the pipe sidewall between the heat storage device and the third flow path.
[0009] Optionally, the third flow path includes a third heat exchanger, which is used to regulate the discharge of the first and second heat exchange media after heat exchange is completed.
[0010] Optionally, it also includes: Cooling towers provide a third heat exchange medium; A first water pump is used to pump a third heat exchange medium to circulate it between the cooling tower and the first heat exchanger, and to exchange heat with the first heat exchange medium; and The second water pump is used to pump the third heat exchange medium so that it circulates between the cooling tower and the third heat exchanger and exchanges heat with the first and second heat exchange media after heat exchange.
[0011] Optionally, the first measurement component includes: A first measuring element, positioned near the inlet of the thermal storage device, is used to measure the inlet temperature and flow rate of the first and second heat exchange media; and The second measuring element is located near the outlet of the thermal storage device and is used to measure the discharge temperature and discharge flow rate of the first and second heat exchange media after heat exchange.
[0012] Optionally, it further includes a second measuring component, the second measuring component comprising: A third measuring element, installed on the side wall of the pipeline between the first heat exchanger and the heat storage device, is used to monitor the state parameters of the first heat exchange medium; and The fourth measuring element is installed on the side wall of the pipeline between the second heat exchanger and the heat storage device, and is used to monitor the state parameters of the second heat exchange medium.
[0013] A second aspect of this disclosure provides a method for testing thermal storage performance, wherein the method applies the thermal storage performance testing system described above to test the thermal storage performance of a thermal storage device.
[0014] Through the above technical solution, the first and second flow paths transport different heat exchange media to the thermal storage device for heat exchange, thereby realizing heat storage or heat release in the thermal storage device. After the heat exchange is completed, the heat exchange media is discharged in a timely manner through the third flow path. This allows the test system to not only perform performance tests on the thermal storage device for different heat exchange scenarios, but also reduces the specific requirements for the heat exchange media, effectively improving the versatility and applicability of the test system. In addition, by using the first measurement component to monitor the thermal storage device in real time during the heat exchange process, changes in the parameters of the heat exchange media and the thermal storage device itself can be detected in a timely manner, effectively ensuring the accuracy of the test system's performance evaluation of the thermal storage device.
[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is an overall schematic diagram of the thermal storage performance testing system provided in the exemplary embodiments of this disclosure; Figure 2 This is a schematic diagram of the thermal storage performance testing system provided in the exemplary embodiments of this disclosure under the thermal storage conditions of the thermal storage equipment; Figure 3 This is a schematic diagram of the thermal storage performance testing system provided in the exemplary embodiments of this disclosure under the thermal storage equipment over-temperature condition; Figure 4 This is a schematic diagram of the thermal storage performance testing system provided in the exemplary embodiments of this disclosure under the heat release condition of the thermal storage device; Figure 5 This is a schematic diagram of the thermal storage performance testing system provided in the exemplary embodiments of this disclosure under the condition of heat release overheating of the thermal storage device; Figure 6 This is a flowchart of a thermal storage performance testing method provided by an exemplary embodiment of this disclosure.
[0017] Explanation of reference numerals in the attached figures 1-Heat storage equipment; 11-Inlet; 111-First inlet; 112-Second inlet; 12-Outlet; 121-First outlet; 122-Second outlet; 2-First flow path; 21-Thermal energy management unit; 22-Burner; 23-First heat exchanger; 24-First valve; 25-Second valve; 26-Third valve; 27-Fourth valve; 28-Fifth valve; 3-Second flow path; 31-Fan; 32-Second heat exchanger; 33-Molecular sieve; 34-Sixth valve; 35-Seventh valve; 36-Eighth valve; 37-Ninth valve; 38-Tenth valve; 39-Eleventh valve; 4-Third flow path; 41-Third heat exchanger; 42-Twelfth valve; 4 3-Thirteenth valve; 44-Fourteenth valve; 45-Fifteenth valve; 46-Sixteenth valve; 51-First branch; 511-Seventeenth valve; 52-Second branch; 521-Eighteenth valve; 61-Cooling tower; 62-First water pump; 63-Second water pump; 64-Nineteenth valve; 65-Twentieth valve; 66-Twenty-first valve; 67-Twenty-second valve; 68-Twenty-third valve; 69-Twenty-fourth valve; 71-First thermometer; 72-First flow meter; 73-Second thermometer; 74-Second flow meter; 75-Third thermometer; 81-First pressure reducing valve; 82-Second pressure reducing valve; 83-First safety valve; 84-Second safety valve. Detailed Implementation
[0018] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.
[0019] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to the outline of the corresponding component itself. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not have sequential or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings denote the same or similar elements.
[0020] Reference Figures 1-5This disclosure provides a thermal storage performance testing system for testing the thermal storage performance of a thermal storage device 1. The system may include a first flow path 2, a second flow path 3, a third flow path 4, and a first testing component. The first flow path 2 is used to input a first heat exchange medium into the thermal storage device 1 under test. The first heat exchange medium can be a high-temperature gas to exchange heat with the thermal storage device 1, thereby achieving thermal storage. The second heat exchange medium can be a low-temperature or room-temperature gas to exchange heat with the thermal storage device 1, thereby achieving heat release. The second flow path 3 is used to input a second heat exchange medium into the thermal storage device 1. In the embodiments provided in this disclosure, the first and second heat exchange media can be selectively supplied to the thermal storage device 1 to respectively achieve the heat storage and heat release processes of the thermal storage device 1, thereby enabling comprehensive testing of the thermal storage device 1. This can improve the reliability of the testing of the thermal storage device 1 and reduce the failure rate. In other embodiments, for example, when the thermal storage device 1 is at an extremely high temperature, both the first and second heat exchange media can be low-temperature heat exchange media, which will be described in detail later. Additionally, it should be noted that the high temperature, low temperature, or medium temperature mentioned in this disclosure refers to the current temperature of the thermal storage device 1. This allows for the selection of a suitable heat exchange medium based on the actual temperature state of the thermal storage device 1 and the testing requirements during performance testing, facilitating accurate assessment of the heat exchange capacity of the thermal storage device 1 during both the heat release and heat storage processes. The third flow path 4 can be used to discharge the first and second heat exchange media after heat exchange with the thermal storage device 1. By promptly discharging the media that have completed heat exchange, it is possible to ensure real-time measurement of the parameters of the heat exchange media after heat exchange, thereby improving the accuracy of performance testing. The first measuring component can be used to measure the changes in parameters of the first and second heat exchange media before and after heat exchange with the thermal storage device 1. Here, the changed parameters refer to the heat difference between the inlet and outlet of the heat exchange media in the thermal storage device 1, reflecting the heat release or dissipation of the thermal storage device 1 during operation. By calculating the formula Power (P) = Heat (Q) ÷ Time (T), the heat storage power or heat release power of the thermal storage device 1 can be calculated, i.e., the ability of the thermal storage device 1 to store or release heat per unit time.
[0021] Through the above technical solution, the first flow path 2 and the second flow path 3 transport different heat exchange media to the thermal storage device 1 for heat exchange, thereby realizing the heat storage or heat release of the thermal storage device 1. After the heat exchange is completed, the heat exchange media is discharged in time through the third flow path 4. This allows the test system to not only perform performance tests on the thermal storage device 1 for different heat exchange scenarios, but also reduces the specific requirements for the heat exchange media, effectively improving the versatility and applicability of the test system. In addition, by using the first measurement component to monitor the thermal storage device 1 in real time during the heat exchange process, the changes in parameters of the heat exchange media and the thermal storage device 1 itself can be detected in a timely manner, effectively ensuring the accuracy of the test system's performance evaluation of the thermal storage device 1.
[0022] Reference Figure 1 and Figure 2 The first flow path 2 may include a thermal management unit 21, a burner 22, and a first heat exchanger 23. The thermal management unit 21 can be used to output the first heat exchange medium. In the embodiments provided in this disclosure, the thermal management unit 21 can be a gas storage tank. Correspondingly, the first heat exchange medium can be a medium-temperature gas. The gas storage tank can be made of a medium-temperature resistant metal material, such as carbon steel or stainless steel. The shape of the gas storage tank can be a vertical column, a horizontal column, or a spherical shape, etc., which are not limited in this disclosure. The internal structure of the gas storage tank can adopt an external insulation and internal pressure bearing type. The insulation material can be, for example, ceramic fiber or other insulation materials, so that its thermal conductivity at room temperature is ≤0.02W / mK. Furthermore, the tank body of the heat storage tank can be equipped with safety components to ensure the stable operation of the test system. These safety components can be, for example, a safety valve, a pressure gauge, a thermometer, and a pressure regulating valve, etc., to facilitate real-time monitoring of the first heat exchange medium contained within it, ensuring that the pressure and temperature inside the tank remain within a stable range, and improving the safety of the heat storage device 1 during performance testing. The burner 22 can be connected to the thermal management unit 21 to increase the temperature of the first heat exchange medium. When the first heat exchange medium is the aforementioned medium-temperature gas, the burner can burn the first heat exchange medium to form a high-temperature gas, thereby reducing the heat exchange pressure of the subsequent first heat exchange medium and facilitating the evaluation of the thermal storage performance of the thermal storage device. The first heat exchanger 23 can be connected between the burner 22 and the thermal storage device 1. The first heat exchanger 23 can be used to regulate the temperature of the first heat exchange medium delivered to the thermal storage device 1, so that the first heat exchange medium can be adjusted to a suitable temperature and delivered to the thermal storage device 1 for thermal storage according to specific temperature requirements. In the embodiments provided in this disclosure, the first heat exchanger 23, the second heat exchanger 32 mentioned below, and the third heat exchanger 41 can be made of metal materials, such as carbon steel, stainless steel, etc., and their types can be shell-and-tube type, plate-fin type, plate type, etc., which are not limited in this disclosure.
[0023] Reference Figure 1The thermal storage performance testing system provided in this disclosure also includes multiple control valves. These valves can be opened and closed according to different testing requirements. To avoid redundancy, they will not be listed here, but will be shown one by one when describing each operating condition later.
[0024] Reference Figure 1 and Figure 2 During normal operation of the thermal storage device 1, under the condition of testing the thermal storage performance of the thermal storage device 1, the first flow path 2 delivers the first heat exchange medium to the thermal storage device 1. Specifically, the thermal storage device 1 may include an inlet 11 and an outlet 12. The inlet 11 may include a first inlet 111, and the outlet 12 may include a first outlet 121. The first valve 24, the second valve 25, the third valve 26, the fourth valve 27, and the fifth valve 28 on the first flow path 2 are opened. At the same time, the A and B ports of the thirteenth valve 43 and the sixteenth valve 46, as well as the twelfth valve 42 on the third flow path 4 are opened. The medium-temperature first heat exchange medium is output through the thermal energy management unit 21, flows through the burner 22 for heating, and flows through the first heat exchanger 23 for temperature fine-tuning before being delivered to the thermal storage device 1 through the first inlet 111. After exchanging heat with the thermal storage device 1, the first heat exchange medium is discharged through the first outlet 121 to the third flow path 4. In the embodiments provided in this disclosure, the third flow path 4 may include a third heat exchanger 41. After the heat exchange is completed, the first heat exchange medium can flow through the third heat exchanger 41 and then be discharged. For example, when the first heat exchange medium is discharged to the atmosphere after the heat exchange is completed, the third heat exchanger 41 may be a cooling heat exchanger to reduce the first heat exchange medium to a safe discharge temperature before discharge, so as to effectively prevent safety accidents caused by high temperature and avoid thermal shock to the test system.
[0025] Accordingly, this disclosure provides a method for testing thermal storage performance, referring to... Figure 1 , Figure 2 as well as Figure 6 The method includes step S100, in which the first heat exchange medium is heated by the burner 22, flows through the first heat exchanger 23 for temperature fine adjustment and then exchanges heat with the heat storage device 1, and is then discharged through the third flow path 4.
[0026] Reference Figure 1 and Figure 4The second flow path 3 may include a fan 31 and a second heat exchanger 32. The fan 31 can provide conveying power for the second heat exchange medium to output the second heat exchange medium in a direction closer to the heat storage device 1. In the embodiments provided in this disclosure, the second heat exchange medium can be the atmosphere. The second flow path 3 may also include a molecular sieve 33 to filter impurities in the air flowing to the heat storage device 1 to avoid safety hazards. The specific structure and working principle of the molecular sieve 33 are well known to those skilled in the art and will not be described in detail here. The second heat exchanger 32 can be set between the fan 31 and the heat storage device 1 to adjust the temperature of the heat storage medium before delivering it to the heat storage device 1, so that the second heat exchange medium can be adjusted to a suitable temperature and delivered to the heat storage device 1 for heat release according to specific temperature requirements.
[0027] Reference Figure 1 and Figure 4 During normal operation of the thermal storage device 1, and under the condition of testing the heat release performance of the thermal storage device 1, the second flow path 3 delivers the second heat exchange medium to the thermal storage device 1. Specifically, the inlet 11 may also include a second inlet 112, and the outlet 12 may also include a second outlet 122. The sixth valve 34, the seventh valve 35, the eighth valve 36, the ninth valve 37, the tenth valve 38, and the eleventh valve 39 on the second flow path 3 are opened. At the same time, the A and C ports of the fourteenth valve 44, the fifteenth valve 45, and the sixteenth valve 46 on the third flow path 4, as well as the twelfth valve 42, are opened. The second heat exchange medium flows sequentially through the molecular sieve 33, the fan 31, and the second heat exchanger 32, and then enters the thermal storage device 1 through the second inlet 112. After exchanging heat with the thermal storage device 1, it is discharged through the second outlet 122. The second heat exchange medium after heat exchange flows through the third heat exchanger 41 and is discharged through the third flow path 4.
[0028] Accordingly, this disclosure provides a method for testing thermal storage performance, referring to... Figure 1 , Figure 4 as well as Figure 6 The method includes step S200, in which the second heat exchange medium is conditioned by the second heat exchanger 32 and then exchanges heat with the heat storage device 1, and is then discharged through the third flow path 4.
[0029] Reference Figure 1 and Figure 3The thermal storage performance testing system may also include a first branch 51. The inlet of the first branch 51 can be connected to the side wall of the pipe between the thermal storage device 1 and the first heat exchanger 23, and the outlet of the first branch 51 can be connected to the side wall of the pipe between the thermal storage device 1 and the third flow path 4. With this design, even if an overheating condition (exceeding the upper limit of the thermal storage temperature of the thermal storage device 1) occurs during the thermal storage performance testing of the thermal storage device 1, the second thermal storage medium can still output a medium-low temperature heat exchange medium. Specifically, the first valve 24, the second valve 25, the third valve 26 on the first flow path 2 and the seventeenth valve 511 on the first branch 51 are open; the sixth valve 34, the seventh valve 35, the eighth valve 36, the ninth valve 37, the tenth valve 38, and the eleventh valve 39 on the second flow path 3 are open; and the fourteenth valve 44, the fifteenth valve 45, the sixteenth valve 46 (ports A, B, and C) and the twelfth valve 42 on the third flow path 4 are open. It should be noted that port B of the sixteenth valve 46 is open. There is no connection between port C and port C. The fourth valve 27 and the fifth valve 28 are closed, and the burner 22 is closed. At this time, the first heat exchange medium flows through the thermal energy management unit 21 and is cooled by the first heat exchanger 23 before being sent to the first branch 51. Then it is discharged to the third flow path 4 through the first branch 51, and is cooled again by the third heat exchanger 41 before being discharged through the third flow path 4. The flow path of the second heat exchange medium is the same as the flow path under the condition of testing the heat release performance of the heat storage device 1 during normal operation, and will not be described again here.
[0030] Accordingly, this disclosure provides a method for testing thermal storage performance, referring to... Figure 1 , Figure 3 as well as Figure 6 The method includes step S300, in which the first heat exchange medium flows through the first heat exchanger 23 for temperature regulation, and then flows through the first branch 51 and the third flow path 4 in sequence before being discharged; the second heat exchange medium is regulated by the second heat exchanger 32 and then exchanges heat with the heat storage device 1, and then is discharged through the third flow path 4.
[0031] Reference Figure 1 and Figure 5The thermal storage performance testing system may also include a second branch 52. The inlet of the second branch 52 can be connected to the side wall of the pipe between the second heat exchanger 32 and the thermal storage device 1, and the outlet of the second branch 52 can be connected to the side wall of the pipe between the thermal storage device 1 and the third flow path 4. With this design, in the event of overheating (exceeding the lower limit of the thermal storage temperature of the thermal storage device 1) during the thermal release performance test of the thermal storage device 1, the first thermal storage medium can output a high heat exchange medium. Specifically, the first valve 24, the second valve 25, the third valve 26, the fourth valve 27, and the fifth valve 28 on the first flow path 2 are open; the sixth valve 34, the seventh valve 35, the eighth valve 36, and the ninth valve 37 on the second flow path 3 are open; the eighteenth valve 521 on the second branch 52 is open; the tenth valve 38 and the eleventh valve 39 are closed; and the A, B, and C ports of the fourteenth valve 44, the fifteenth valve 45, and the sixteenth valve 46 on the third flow path 4, as well as the twelfth valve 42, are open. It should be noted that there is no connection between ports B and C of the sixteenth valve 46. When the burner 22 is open, the first heat exchange medium flows through the thermal energy management unit 21 and is cooled by the first heat exchanger 23 before being sent to the heat storage device 1. Then it is cooled again by the third heat exchanger 41 and discharged through the third flow path 4. The second heat exchange medium flows sequentially through the molecular sieve 33, the fan 31, and the second heat exchanger 32, and then to the second branch 52, which leads to the third flow path 4. After being cooled again by the third heat exchanger 41, it is discharged through the third flow path 4.
[0032] Accordingly, this disclosure provides a method for testing thermal storage performance, referring to... Figure 1 , Figure 5 as well as Figure 6 The method includes step S400, in which the first heat exchange medium is conditioned by the first heat exchanger 23, then flows through the heat storage device 1, and is discharged through the third flow path 4; the second heat exchange medium is conditioned by the second heat exchanger 32, then flows through the second branch 52, and is discharged through the third flow path 4.
[0033] It should be noted that the above steps are only used to distinguish the flow modes of the first heat exchange medium and the second heat exchange medium under different operating conditions of the heat storage equipment 1, and do not have a chronological order.
[0034] Reference Figures 1-5The thermal storage performance testing system provided in this disclosure may further include a cooling tower 61, a first water pump 62, and a second water pump 63. In the embodiments provided in this disclosure, the first heat exchanger 23 and the third heat exchanger 41 mentioned above may each be a partition wall heat exchanger. The cooling tower 61 can provide a third heat exchange medium, and the first water pump 62 can be used to pump the third heat exchange medium so that the third heat exchange medium circulates between the cooling tower 61 and the first heat exchanger 23, exchanging heat with the first heat exchange medium, thereby enabling temperature regulation when the first heat exchange medium flows through the first heat exchanger 23. The second water pump 63 can be used to pump the third heat exchange medium so that it circulates between the cooling tower 61 and the third heat exchanger 41, exchanging heat with the first and second heat exchange media after heat exchange, thereby enabling temperature regulation when the first and second heat exchange media after heat exchange flow through the third heat exchanger 41 to meet the discharge temperature. The thermal storage performance testing system provided in this disclosure may further include a nineteenth valve 64, a twentieth valve 65, a twenty-first valve 66, a twenty-second valve 67, a twenty-third valve 68, and a twenty-fourth valve 69. It should be noted that ports A and B of the twentieth valve 65 are connected, ports A and C of the twentieth valve 65 are connected, and ports C and B of the twentieth valve 65 are not connected. Similarly, ports A and B of the twenty-first valve 66 are connected, ports A and C of the twenty-first valve 66 are connected, and ports C and B of the twenty-first valve 66 are not connected. Through these valves, the flow rate and velocity of the third heat exchange medium can be adjusted to meet the different heat exchange requirements of the first heat exchange medium, and to ensure that the first and second heat exchange media after heat exchange meet different emission requirements.
[0035] In the embodiments provided in this disclosure, the first measuring component may include a first measuring element and a second measuring element (not shown in the figure). The first measuring element may be disposed near the inlet 11 of the thermal storage device 1, and the first measuring element may be disposed at the first inlet 111 and the second inlet 112 respectively, for measuring the inlet temperature and inlet flow rate of the first heat exchange medium and the second heat exchange medium respectively, that is, measuring the flow rate and temperature of the first heat exchange medium and the second heat exchange medium before heat exchange with the thermal storage device 1. The second measuring element may be disposed near the outlet 12 of the thermal storage device 1, and the second measuring element may be disposed at the first outlet 121 and the second outlet 122 respectively, for measuring the outlet temperature and outlet flow rate of the first heat exchange medium and the second heat exchange medium after heat exchange respectively. By comparing the temperature and flow rate of the heat exchange medium at the inlet 11 and the outlet 12, the testing accuracy and timeliness of the heat exchange capacity of the thermal storage device 1 can be effectively improved. In the embodiments provided in this disclosure, the thermal storage performance testing system may further include a plurality of fifth temperature measuring elements. The plurality of fifth temperature measuring elements are distributed on the thermal storage device 1 at intervals according to the specific structure of the thermal storage device 1, and are used to determine the temperature uniformity of the thermal storage device 1 itself, so as to select suitable thermal storage materials to manufacture the thermal storage device 1 according to the thermal storage requirements.
[0036] The thermal storage performance testing system may further include a second measuring component, which may include a third measuring element and a fourth measuring element. The third measuring element may be placed on the side wall of the pipeline between the first heat exchanger 23 and the thermal storage device 1 to monitor the state parameters of the first heat exchange medium. In the embodiments provided in this disclosure, the state parameters may be the pressure, flow rate, and temperature of the heat exchange medium. Figure 1 As shown, the third measuring element may include a first thermometer 71 and a first flow meter 72 to detect the temperature and flow rate of the first heat exchange medium before it is delivered to the heat storage device 1. The first water pump 62 can adjust the third heat exchange medium according to the detection result of the first thermometer 71, thereby adjusting the temperature of the first heat exchange medium. The burner 22 can adjust the combustion flow rate of the first heat exchange medium according to the feedback result of the first flow meter 72, thereby adjusting the combustion flow rate of the first heat exchange medium, thus stabilizing the flow rate of the first heat exchange medium before it is delivered to the heat storage device 1, ensuring the stability of the parameters of the first heat exchange medium at the first inlet 111, and thus improving the accuracy of the test. The fourth measuring element may be installed on the side wall of the pipeline between the second heat exchanger 32 and the heat storage device 1 to monitor the state parameters of the second heat exchange medium. The fourth measuring element may include a second thermometer 73 and a second flow meter 74 to detect the temperature and flow rate of the second heat exchange medium before it is delivered to the heat storage device 1. The second heat exchanger 32 can adjust the temperature of the second heat exchange medium according to the detection result of the second thermometer 73, and the fan 31 can adjust the flow rate of the second heat exchange medium according to the detection result of the second flow meter 74, so as to achieve stable temperature and flow rate of the second heat exchange medium before it is delivered to the heat storage device 1, and ensure stable parameters of the second heat exchange medium at the second inlet 112, thereby improving the accuracy of the test. In the embodiment provided in this disclosure, a third thermometer 75 may be provided on the third flow path 4. The third thermometer 75 can be used to measure the temperature of the first and second heat exchange media after heat exchange. The second water pump 63 can adjust the third heat exchange medium according to the detection result of the third thermometer 75, thereby controlling the discharge temperature of the first and second heat exchange media after heat exchange.
[0037] In the embodiments provided in this disclosure, the thermal storage device 1 may be equipped with a first pressure reducing valve 81 and a first safety valve 83. When the thermal storage device 1 experiences overpressure during the thermal storage or heat release process, the pressure can be released by opening the first pressure reducing valve 81 on the thermal storage device 1. When the pressure after pressure release is insufficient to meet safety requirements, the first safety valve 83 can be opened to further release the pressure of the thermal storage device 1, thereby reducing the internal pressure of the thermal storage device 1 to a safe range. A second pressure reducing valve 82 and a second safety valve 84 can be installed on the third flow path 4. The second pressure reducing valve 82 can be installed at the port of the third flow path 4 for discharging the first and second heat exchange media after heat exchange. The second safety valve 84 can be installed between the sixteenth valve 46 and the third heat exchanger 41. When the pressure of the first and second heat exchange media after heat exchange flows through the third flow path 4 exceeds the safe range, the pressure can be released by opening the second pressure reducing valve 82. When the pressure after pressure release cannot meet the safety requirements, the pressure in the pipeline of the third flow path 4 can be reduced by opening the second safety valve 84, thereby improving the stability of the first and second heat exchange media after heat exchange when they are discharged.
[0038] According to a second aspect of this disclosure, a method for testing thermal storage performance is provided. This method uses a thermal storage performance testing system provided by this disclosure to test the thermal storage performance of a thermal storage device. To avoid redundancy, the specific operation process and details of this testing method can be found in the relevant sections above. Furthermore, this thermal storage performance testing method possesses all the beneficial effects of the thermal storage performance testing system provided by this disclosure, which will not be elaborated upon here.
[0039] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.
[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.
[0041] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.
Claims
1. A thermal storage performance testing system, characterized in that, include: The first flow path is used to input the first heat exchange medium into the thermal storage device to be tested; The second flow path is used to input the second heat exchange medium into the thermal storage device; The third flow path is used to discharge the first and second heat exchange media that have completed heat exchange with the heat storage device; as well as The first measuring component is used to measure the changes in parameters of the first and second heat exchange media before and after heat exchange with the thermal storage device.
2. The thermal storage performance testing system according to claim 1, characterized in that, The first flow path includes: The thermal management unit is used to output the first heat exchange medium; A burner, connected to the thermal management unit, is used to increase the temperature of the first heat exchange medium; and A first heat exchanger is connected between the burner and the heat storage device for regulating the temperature of the first heat exchange medium supplied to the heat storage device.
3. The thermal storage performance testing system according to claim 2, characterized in that, It also includes a first branch, the inlet end of which is connected to the pipe sidewall between the thermal storage device and the first heat exchanger, and the outlet end of which is connected to the pipe sidewall between the thermal storage device and the third flow path.
4. The thermal storage performance testing system according to claim 2 or 3, characterized in that, The second flow path includes: A fan is used to transport the second heat exchange medium; and A second heat exchanger is installed between the fan and the heat storage device to regulate the temperature of the heat storage medium before delivering it to the heat storage device.
5. The thermal storage performance testing system according to claim 4, characterized in that, It also includes a second branch, the inlet end of which is connected to the pipe sidewall between the second heat exchanger and the heat storage device, and the outlet end of which is connected to the pipe sidewall between the heat storage device and the third flow path.
6. The thermal storage performance testing system according to claim 4, characterized in that, The third flow path includes a third heat exchanger, which is used to regulate the discharge of the first and second heat exchange media after heat exchange is completed.
7. The thermal storage performance testing system according to claim 6, characterized in that, Also includes: Cooling towers provide a third heat exchange medium; A first water pump is used to pump a third heat exchange medium to circulate it between the cooling tower and the first heat exchanger, and to exchange heat with the first heat exchange medium; and The second water pump is used to pump the third heat exchange medium so that it circulates between the cooling tower and the third heat exchanger and exchanges heat with the first and second heat exchange media after heat exchange.
8. The thermal storage performance testing system according to claim 4, characterized in that, The first measurement component includes: A first measuring element, positioned near the inlet of the thermal storage device, is used to measure the inlet temperature and flow rate of the first and second heat exchange media; and The second measuring element is located near the outlet of the thermal storage device and is used to measure the discharge temperature and discharge flow rate of the first and second heat exchange media after heat exchange.
9. The thermal storage performance testing system according to claim 8, characterized in that, It also includes a second measuring component, the second measuring component comprising: A third measuring element, installed on the side wall of the pipeline between the first heat exchanger and the heat storage device, is used to monitor the state parameters of the first heat exchange medium; and The fourth measuring element is installed on the side wall of the pipeline between the second heat exchanger and the heat storage device, and is used to monitor the state parameters of the second heat exchange medium.
10. A method for testing thermal storage performance, characterized in that, The method uses the thermal storage performance testing system according to any one of claims 1-9 to test the thermal storage performance of the thermal storage equipment.