A method and system for testing heat storage and heat exchange performance

Abstract

This invention discloses a method and system for testing the performance of heat storage and heat exchange. The method includes: controlling the switch to heat storage mode; controlling the heating power of the heat storage and heat exchange device under test to be increased to a preset power value, and then executing a heating timer; when the temperature of the heat storage material meets the preset heating conditions, stopping the timer to obtain the heating time; controlling the switch to exhaust mode; after exhausting, controlling the switch to heat release mode; controlling the detection mechanism to start working and executing a heat release timer, obtaining the detection results fed back by the detection mechanism, and stopping the timer when the detection results meet the preset heat release conditions to obtain the heat release time; calculating the heat storage and heat exchange ratio based on the heating time, the detection results, and the heat release time. The method disclosed in this application calculates the heat storage and heat exchange ratio, which can be used as a unified evaluation standard among different types of heat storage and heat exchange devices, thereby achieving accurate measurement of the overall performance of different types of heat storage and heat exchange devices.

Description

Technical Field

[0001] This invention relates to the field of performance testing technology, and in particular to a method and system for testing the performance of heat storage and heat exchange. Background Technology

[0002] In the current technology, the production and testing stage of thermal storage and heat exchange devices faces the following problem: the lack of a unified performance evaluation standard; because thermal storage and heat exchange devices may contain a variety of different numbers of thermal storage components, design outlet water temperatures, heating element types, and types of thermal storage materials, these differences lead to the complexity of performance evaluation; therefore, it is currently difficult to directly compare and comprehensively evaluate the performance of different thermal storage and heat exchange devices.

[0003] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a method for testing the heat storage and heat exchange performance. The calculated heat storage and heat exchange ratio serves as a unified evaluation standard among different types of heat storage and heat exchange devices, enabling accurate measurement of the overall performance of different types of heat storage and heat exchange devices.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for testing the performance of heat storage and heat exchange, the heat storage and heat exchange performance testing system includes a control device and a conveying mechanism, an exhaust mechanism, and a testing mechanism, all electrically connected to the control device. The input end of the conveying mechanism is connected to an external water supply device, the output end of the conveying mechanism is connected to the inlet of the heat storage and heat exchange device under test, the exhaust mechanism is connected to the outlet of the heat storage and heat exchange device under test, the first output end of the exhaust mechanism is connected to the testing mechanism, and the second output end of the exhaust mechanism is connected to an external collection device. The heat storage and heat exchange performance testing method includes:

[0007] Control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to heat storage mode;

[0008] After controlling the heating power of the heat storage and heat exchange device under test to be increased to the preset power value, the heating time is executed. When the temperature of the heat storage material of the heat storage and heat exchange device under test meets the preset heating conditions, the timing is stopped to obtain the heating time.

[0009] Control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to exhaust mode;

[0010] After exhausting the heat, control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to the heat release mode.

[0011] The control and testing mechanism starts working and executes the heat release timing. The test results fed back by the testing mechanism are obtained. When the test results meet the preset heat release conditions, the timing is stopped, and the heat release time is obtained.

[0012] The heat storage and heat exchange ratio is calculated based on the heating time, test results, and heat release time.

[0013] In the heat storage and heat exchange performance testing method, the conveying mechanism includes a first valve body, a conveying pump, and a second valve body, all electrically connected to the control device. The venting mechanism includes a third valve body, a fourth valve body, and a fifth valve body, all electrically connected to the control device. The inlet of the first valve body is connected to an external water supply device. The outlet of the first valve body is connected to the inlet of the second valve body via the conveying pump. The outlet of the second valve body is connected to the inlet of the heat storage and heat exchange device under test. The inlet of the third valve body is connected to the outlet of the heat storage and heat exchange device under test. The first outlet of the third valve body is connected to the input end of the testing mechanism via the fifth valve body. The second outlet of the third valve body is connected to the inlet of the fourth valve body. The outlet of the fourth valve body is connected to an external collection device. Controlling and adjusting the working states of the conveying mechanism and the venting mechanism to switch the heat storage and heat exchange performance testing system to heat storage mode specifically includes:

[0014] The control conveying mechanism includes closing the first valve body, closing the second valve body, and stopping the conveying pump;

[0015] The system controls the closure of the first output port of the third valve body and the fifth valve body of the exhaust mechanism, and controls the opening of the input port and the second output port of the third valve body, and controls the opening of the fourth valve body. The heat storage and heat exchange performance testing system switches to heat storage mode.

[0016] In the aforementioned method for testing the heat storage and heat exchange performance, the step of stopping the timing and obtaining the heating time when the temperature of the heat storage material in the heat storage and heat exchange device under test meets the preset heating conditions specifically includes:

[0017] The timing stops when the temperature of the heat storage material in the heat storage and heat exchange device under test is greater than or equal to the preset heating temperature.

[0018] Record the time required for the heat storage material to heat up from room temperature to the preset heating temperature to obtain the heating time.

[0019] In the aforementioned heat storage and heat exchange performance testing method, controlling and adjusting the working states of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to exhaust mode specifically includes:

[0020] The control conveying mechanism includes the opening of the first valve body, the opening of the second valve body, and the start of operation of the conveying pump;

[0021] The first output port of the third valve body and the fifth valve body of the exhaust mechanism are closed, and the input port and the second output port of the third valve body are opened. The fourth valve body is opened, and the heat storage and heat exchange performance detection system is switched to exhaust mode.

[0022] In the aforementioned heat storage and heat exchange performance testing method, the step of controlling and adjusting the working state of the conveying mechanism and the exhaust mechanism after exhaust is completed, so that the heat storage and heat exchange performance testing system switches to the heat release mode, specifically includes the following steps:

[0023] Obtain the outlet temperature of the heat storage heat exchange device under test. When the obtained outlet temperature is lower than the preset heat release stop exhaust temperature, it indicates that the exhaust is complete.

[0024] The control conveying mechanism includes the opening of the first valve body, the opening of the second valve body, and the start of operation of the conveying pump;

[0025] The second output port of the third valve body and the fourth valve body of the exhaust mechanism are closed, and the input port and the first output port of the third valve body are opened. The fifth valve body is opened, and the heat storage and heat exchange performance detection system is switched to heat release mode.

[0026] In the heat storage and heat exchange performance testing method, the testing mechanism includes a water inlet, which is equipped with a weighing device for measuring water volume and a temperature measuring device for detecting water temperature. The method controls the testing mechanism to start working and executes a heat release timing sequence, acquiring the testing results fed back by the testing mechanism. When the testing results meet the preset heat release conditions, the timing is stopped, and the heat release time is obtained. Specifically, this includes:

[0027] The control and detection mechanism begins operation and executes exothermic timing;

[0028] Obtain the timing of heat release and the real-time water output from the weighing device.

[0029] The timing stops when the real-time temperature fed back by the temperature measuring device is less than or equal to the preset heat release temperature;

[0030] Record the time required for the real-time temperature to drop to the preset heat release temperature to obtain the heat release time.

[0031] The present invention also provides a thermal storage and heat exchange performance testing system. The thermal storage and heat exchange performance testing system uses any of the above-described thermal storage and heat exchange performance testing methods to achieve operation control. The thermal storage and heat exchange performance testing system includes a control device and a conveying mechanism, an exhaust mechanism, and a testing mechanism, which are electrically connected to the control device. The input end of the conveying mechanism is used to connect to an external water supply device, the output end of the conveying mechanism is used to connect to the inlet of the thermal storage and heat exchange device to be tested, the exhaust mechanism is used to connect to the outlet of the thermal storage and heat exchange device to be tested, the first output end of the exhaust mechanism is connected to the testing mechanism, and the second output end of the exhaust mechanism is used to connect to an external collection device.

[0032] In the heat storage and heat exchange performance testing system, the conveying mechanism includes a first valve body, a conveying pump, and a second valve body, which are electrically connected to the control device respectively. The inlet of the first valve body is used to connect to an external water supply device, the outlet of the first valve body is connected to the inlet of the second valve body through the conveying pump, and the outlet of the second valve body is used to connect to the inlet of the heat storage and heat exchange device to be tested.

[0033] In the heat storage and heat exchange performance testing system, the exhaust mechanism includes a third valve body, a fourth valve body, and a fifth valve body, which are electrically connected to the control device respectively. The input port of the third valve body is used to connect to the outlet of the heat storage and heat exchange device under test. The first output port of the third valve body is connected to the input end of the testing mechanism through the fifth valve body. The second output port of the third valve body is connected to the input port of the fourth valve body. The output port of the fourth valve body is used to connect to an external collection device.

[0034] In the heat storage and heat exchange performance testing system, the testing mechanism includes a water inlet, and the water inlet is equipped with a weighing device for measuring the water volume and a temperature measuring device for detecting the water temperature. The weighing device and the temperature measuring device are electrically connected to the control device.

[0035] Beneficial effects:

[0036] This invention provides a method for testing the performance of heat storage and heat exchange. The heat storage and heat exchange ratio can be calculated, and the heat storage and heat exchange ratio serves as a unified evaluation standard among different types of heat storage and heat exchange devices. This enables accurate measurement of the overall performance of different types of heat storage and heat exchange devices, allowing for performance comparison between heat storage and heat exchange devices with different parameters and types. This provides data support for the performance improvement and optimization of different types of heat storage and heat exchange devices. Attached Figure Description

[0037] Figure 1 The logic flowchart of the heat storage and heat exchange performance testing method provided by the present invention;

[0038] Figure 2The system structure diagram of the heat storage and heat exchange performance testing system provided by the present invention is shown.

[0039] Explanation of main component symbols: 11-First valve body, 12-Transfer pump, 13-Second valve body, 21-Third valve body, 22-Fourth valve body, 23-Fifth valve body, 31-Temperature measuring device, 32-Weighing device, 41-Water supply device, 42-Heat storage and heat exchange device to be tested. Detailed Implementation

[0040] This invention provides a method and system for testing the heat storage and heat exchange performance. To make the objectives, technical solutions and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] In the description of this invention, it should be understood that the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Please see Figure 1 This invention provides a method for testing the heat storage and heat exchange performance. The heat storage and heat exchange performance testing system includes a control device and a conveying mechanism, an exhaust mechanism, and a testing mechanism, all electrically connected to the control device. The input end of the conveying mechanism is connected to an external water supply device 41, the output end of the conveying mechanism is connected to the inlet of the heat storage and heat exchange device 42 to be tested, the exhaust mechanism is connected to the outlet of the heat storage and heat exchange device 42 to be tested, the first output end of the exhaust mechanism is connected to the testing mechanism, and the second output end of the exhaust mechanism is connected to an external collection device. The heat storage and heat exchange performance testing method includes:

[0043] 100. Control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to heat storage mode;

[0044] 200. After controlling the heating power of the heat storage heat exchange device 42 under test to be increased to the preset power value, the heating timer is executed. When the temperature of the heat storage material of the heat storage heat exchange device 42 under test meets the preset heating conditions, the timing is stopped to obtain the heating time.

[0045] 300. Control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to exhaust mode;

[0046] In this embodiment, the exhaust mode is executed before the heat release mode, which can first exhaust the high-temperature steam that may appear or exist in the pipeline to the outside of the detection system, avoiding direct contact between the high-temperature steam and the tester, thus ensuring the safety of the tester during the test process.

[0047] 400. After exhausting the heat, control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to the heat release mode.

[0048] 500. Control the detection mechanism to start working and execute the heat release timing, obtain the detection results fed back by the detection mechanism, and stop timing when the detection results meet the preset heat release conditions to obtain the heat release time;

[0049] 600. Calculate the heat storage and heat exchange ratio based on the heating time, test results, and heat release time.

[0050] This application discloses a method for testing the performance of heat storage and heat exchange. The heat storage and heat exchange ratio can be calculated, and the heat storage and heat exchange ratio serves as a unified evaluation standard among different types of heat storage and heat exchange devices. It enables accurate measurement of the overall performance of different types of heat storage and heat exchange devices, allowing for performance comparison between heat storage and heat exchange devices with different parameters and types. This provides data support for the performance improvement and optimization of different types of heat storage and heat exchange devices.

[0051] Further, please refer to Figure 2 The conveying mechanism includes a first valve body 11, a conveying pump 12, and a second valve body 13, all electrically connected to the control device. The venting mechanism includes a third valve body 21, a fourth valve body 22, and a fifth valve body 23, all electrically connected to the control device. The inlet of the first valve body 11 is connected to an external water supply device 41. The outlet of the first valve body 11 is connected to the inlet of the second valve body 13 via the conveying pump 12. The outlet of the second valve body 13 is connected to the inlet of the heat storage and heat exchange device 42 to be tested. The inlet of the third valve body 21 is connected to the outlet of the heat storage and heat exchange device 42 to be tested. The first outlet of the third valve body 21 is connected to the input of the detection mechanism via the fifth valve body 23. The second outlet of the third valve body 21 is connected to the inlet of the fourth valve body 22. The outlet of the fourth valve body 22 is connected to an external collection device. The control adjustment of the working state of the conveying mechanism and the venting mechanism to switch the heat storage and heat exchange performance testing system to heat storage mode specifically includes:

[0052] 101. The first valve body 11 of the control conveying mechanism is closed, the second valve body 13 is closed, and the conveying pump 12 stops working;

[0053] 102. The first output port of the third valve body 21 and the fifth valve body 23 of the exhaust mechanism are closed, and the input port and the second output port of the third valve body 21 are opened, and the fourth valve body 22 is opened, and the heat storage and heat exchange performance detection system is switched to heat storage mode.

[0054] Furthermore, when the temperature of the heat storage material in the heat storage and heat exchange device 42 meets the preset heating conditions, the timing is stopped to obtain the heating time, specifically including:

[0055] 201. When the temperature of the heat storage material in the heat storage and heat exchange device 42 under test is greater than or equal to the preset heating temperature, stop timing;

[0056] 202. Record the time required for the heat storage material to heat up from room temperature to the preset heating temperature, and obtain the heating time.

[0057] In this embodiment, when the heat storage mode is executed, the water supply device 41 is first ensured to be sufficient; then the heater of the heat storage heat exchange device 42 under test is controlled to start working. When the heating power of the heat storage heat exchange device 42 under test is ≥ the preset power value P, the timing starts; since the heat storage heat exchange device has a temperature protector, the heat storage material in the heat storage heat exchange device under test will gradually heat up. When the temperature of the heat storage material is ≥ the preset heating temperature t1, the temperature protector will cut off the circuit, and the heat storage heat exchange device 42 under test will stop working; the time required for the heat storage material to heat up from room temperature to the preset heating temperature is recorded to obtain the heating time, which is set as T1. The smaller T1 is, the better the heating performance of the heating body and the better the thermal conductivity of the heat storage material.

[0058] Furthermore, in this embodiment, when the heat storage mode is executed, the second output port of the third valve body 21 is always kept open. Since the heat exchange straight tube of the heat storage heat exchange device is in contact with the heat storage material, if the design temperature of the heat storage material is higher than 100°C, the water remaining in the heat exchange straight tube will be heated into water vapor. The water vapor needs to be discharged from the outlet of the heat storage heat exchange device 42 under test, the second output port of the third valve body 21, and the fourth valve body 22 to the external collection device in sequence to ensure the stability and safety of the entire detection process.

[0059] Furthermore, the control and adjustment of the working states of the conveying mechanism and the exhaust mechanism, so that the heat storage and heat exchange performance testing system switches to exhaust mode, specifically includes:

[0060] 301. The first valve body 11 of the control conveying mechanism is opened, the second valve body 13 is opened, and the conveying pump 12 starts to work;

[0061] 302. The first output port of the third valve body 21 and the fifth valve body 23 of the exhaust mechanism are closed, and the input port and the second output port of the third valve body 21 are opened, and the fourth valve body 22 is opened, and the heat storage and heat exchange performance detection system is switched to exhaust mode.

[0062] In this embodiment, when the exhaust mode is executed, the delivery pump 12 delivers water from the water supply device 41 to the heat storage heat exchange device 42 under test. The heat storage heat exchange device 42 under test preheats the water to the initial temperature. The high-temperature fluid is discharged sequentially from the outlet of the heat storage heat exchange device 42 under test, the second output port of the third valve body 21, and the fourth valve body 22 to the external collection device. Because this part of the high-temperature fluid may still be water vapor exceeding 100°C, the exhaust mode is set to discharge the high-temperature water vapor, ensuring the stability and safety of the detection process.

[0063] Furthermore, after exhausting the wastewater, controlling and adjusting the working state of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to the heat release mode specifically includes the following steps:

[0064] 401. Obtain the outlet temperature of the heat storage heat exchange device 42 to be tested. When the obtained outlet temperature is less than the preset heat release stop exhaust temperature, it indicates that the exhaust is completed.

[0065] In this embodiment, the preset exothermic stop exhaust temperature is 99°C.

[0066] 402. The first valve body 11 of the control conveying mechanism is opened, the second valve body 13 is opened, and the conveying pump 12 starts to work;

[0067] 403. The second output port of the third valve body 21 and the fourth valve body 22 of the exhaust mechanism are closed, and the input port and the first output port of the third valve body 21 are opened. The fifth valve body 23 is opened, and the heat storage and heat exchange performance detection system is switched to the heat release mode.

[0068] Further, please refer to Figure 2 The detection mechanism includes a water inlet, within which a weighing device 32 for measuring water volume and a temperature measuring device 31 for detecting water temperature are installed. The control mechanism starts operation and executes a heat release timing process, acquiring the detection results fed back by the mechanism. When the detection results meet preset heat release conditions, the timing stops, yielding the heat release time. Specifically, this includes:

[0069] 501. The control and detection mechanism starts working and executes the exothermic timing;

[0070] 502. Obtain the real-time water output rate fed back by the weighing device 32 at the time of heat release timing, and set it as Q;

[0071] 503. When the real-time temperature fed back by the temperature measuring device 31 is less than or equal to the preset heat release temperature, stop timing;

[0072] 504. Record the time required for the real-time temperature to drop to the preset heat release temperature to obtain the heat release time.

[0073] In this embodiment, when the heat release mode is executed, the delivery pump 12 delivers water from the water supply device 41 to the heat storage and heat exchange device 42 under test. The heat storage and heat exchange device 42 under test heats the water. The high-temperature fluid is sequentially output from the outlet of the heat storage and heat exchange device 42 under test, the first output port of the third valve body 21, and the fifth valve body 23 to the water intake port. The detection result is obtained through the weighing device 32 and the temperature measuring device 31 set in the water intake port. When the real-time temperature is ≤ the preset heat release temperature t2, the timing is stopped. The time required for the real-time temperature to drop to the preset heat release temperature is recorded to obtain the heat release time, which is set as T2. The larger T2 is, the better the heat storage and heat exchange performance of the heat storage and heat exchange device 42 under test.

[0074] In this embodiment, the heat storage and heat transfer ratio can be calculated using the following formula:

[0075]

[0076] Where η is the heat release / storage heat exchange ratio, in L / W; Q is the real-time water output, in L; α is the outlet water temperature correction coefficient, dimensionless, with a value of 0.6-1.3 depending on the number of heat storage units; t2 is the preset heat release temperature, in °C; γ is the heat release time correction coefficient, dimensionless, with a value of 0.75-0.90 depending on the design value of the outlet water temperature of different heat storage and heat exchange devices; T2 is the heat release time, in s; P is the preset power value, in watts; δ is the heating time correction coefficient, dimensionless, with a value of 0.5-2.5 depending on the type of heating element; T1 is the heating time, in s; β is the heat storage material design temperature correction coefficient, dimensionless, with a value of 0.35-1.95 depending on the type of heat storage material; t1 is the preset heating temperature, in °C.

[0077] Please see Figure 2 The present invention also provides a thermal storage and heat exchange performance testing system. The thermal storage and heat exchange performance testing system uses any of the above-described thermal storage and heat exchange performance testing methods to achieve operation control. The thermal storage and heat exchange performance testing system includes a control device and a conveying mechanism, an exhaust mechanism, and a testing mechanism, which are electrically connected to the control device. The input end of the conveying mechanism is used to connect to an external water supply device 41, and the output end of the conveying mechanism is used to connect to the inlet of the thermal storage and heat exchange device 42 to be tested. The exhaust mechanism is used to connect to the outlet of the thermal storage and heat exchange device 42 to be tested. The first output end of the exhaust mechanism is connected to the testing mechanism, and the second output end of the exhaust mechanism is used to connect to an external collection device.

[0078] In this embodiment, the control device can be a microcontroller; the external water supply device 41 is used to hold pure water, and the outlet of the water supply device 41 is connected to the inlet of the first valve body 11 through a water pipe. The water supply device 41 is used to store the water source required to supply the heat storage and heat exchange device 42 to be tested; the external collection device is used to collect the discharged high-temperature steam for high-temperature steam recovery and utilization, thereby improving energy utilization.

[0079] Further, please refer to Figure 2 The conveying mechanism includes a first valve body 11, a conveying pump 12, and a second valve body 13, which are electrically connected to the control device. The inlet of the first valve body 11 is used to connect to an external water supply device 41, and the outlet of the first valve body 11 is connected to the inlet of the second valve body 13 through the conveying pump 12. The outlet of the second valve body 13 is used to connect to the inlet of the heat storage and heat exchange device 42 to be tested.

[0080] In this embodiment, the first valve body 11 and the second valve body 13 may be electric valves, and the delivery pump 12 may be a self-priming pump.

[0081] Further, please refer to Figure 2 The exhaust mechanism includes a third valve body 21, a fourth valve body 22, and a fifth valve body 23, which are electrically connected to the control device. The inlet of the third valve body 21 is used to connect to the outlet of the heat storage and heat exchange device 42 to be tested. The first outlet of the third valve body 21 is connected to the input end of the detection mechanism through the fifth valve body 23. The second outlet of the third valve body 21 is connected to the inlet of the fourth valve body 22. The outlet of the fourth valve body 22 is used to connect to an external collection device.

[0082] In this embodiment, the third valve body 21 may be an electrically controlled three-way valve, and the fourth valve body 22 and the fifth valve body 23 may be electrically controlled valves.

[0083] Further, please refer to Figure 2 The detection mechanism includes a water inlet, and a weighing device 32 for measuring water volume and a temperature measuring device 31 for detecting water temperature are installed inside the water inlet. The weighing device 32 and the temperature measuring device 31 are electrically connected to the control device.

[0084] In this embodiment, the weighing device 32 may be a flow meter, and the temperature measuring device 31 may be a temperature measuring device composed of multiple temperature sensors.

[0085] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A method for testing heat storage and heat exchange performance, characterized in that, The thermal storage and heat exchange performance testing system includes a control device and a conveying mechanism, an exhaust mechanism, and a testing mechanism, which are electrically connected to the control device. The input end of the conveying mechanism is used to connect to an external water supply device, the output end of the conveying mechanism is used to connect to the inlet of the thermal storage and heat exchange device under test, the exhaust mechanism is used to connect to the outlet of the thermal storage and heat exchange device under test, the first output end of the exhaust mechanism is connected to the testing mechanism, and the second output end of the exhaust mechanism is used to connect to an external collection device. The method for testing the heat storage and heat exchange performance includes: Control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to heat storage mode; After controlling the heating power of the heat storage and heat exchange device under test to be increased to the preset power value, the heating time is executed. When the temperature of the heat storage material of the heat storage and heat exchange device under test meets the preset heating conditions, the timing is stopped to obtain the heating time. Control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to exhaust mode; After exhausting the heat, control and adjust the working status of the conveying mechanism and the exhaust mechanism to switch the heat storage and heat exchange performance testing system to the heat release mode. The control and testing mechanism starts working and executes the heat release timing. The test results fed back by the testing mechanism are obtained. When the test results meet the preset heat release conditions, the timing is stopped, and the heat release time is obtained. The heat storage and heat exchange ratio is calculated based on the heating time, test results, and heat release time. The detection mechanism includes a water inlet, which is equipped with a weighing device for measuring water volume and a temperature measuring device for detecting water temperature. The control mechanism starts working and executes a heat release timing process, acquiring the detection results fed back by the mechanism. When the detection results meet preset heat release conditions, the timing stops, obtaining the heat release time. Specifically, this includes: The control and detection mechanism begins operation and executes exothermic timing; Obtain the timing of heat release and the real-time water output from the weighing device. The timing stops when the real-time temperature fed back by the temperature measuring device is less than or equal to the preset heat release temperature; Record the time required for the real-time temperature to drop to the preset heat release temperature to obtain the heat release time; The formula for calculating the heat storage-to-heat exchange ratio is as follows: ； Where η is the heat release / storage heat exchange ratio, in L / W; Q is the real-time water output, in L; α is the outlet water temperature correction coefficient, dimensionless, with a value of 0.6-1.3 depending on the number of heat storage units; t2 is the preset heat release temperature, in °C; γ is the heat release time correction coefficient, dimensionless, with a value of 0.75-0.90 depending on the design value of the outlet water temperature of different heat storage and heat exchange devices; T2 is the heat release time, in s; P is the preset power value, in watts; δ is the heating time correction coefficient, dimensionless, with a value of 0.5-2.5 depending on the type of heating element; T1 is the heating time, in s; β is the heat storage material design temperature correction coefficient, dimensionless, with a value of 0.35-1.95 depending on the type of heat storage material; t1 is the preset heating temperature, in °C.

2. The method for testing heat storage and heat exchange performance according to claim 1, characterized in that, The conveying mechanism includes a first valve body, a conveying pump, and a second valve body, all electrically connected to the control device. The venting mechanism includes a third valve body, a fourth valve body, and a fifth valve body, all electrically connected to the control device. The inlet of the first valve body is connected to an external water supply device. The outlet of the first valve body is connected to the inlet of the second valve body via the conveying pump. The outlet of the second valve body is connected to the inlet of the heat storage and heat exchange device under test. The inlet of the third valve body is connected to the outlet of the heat storage and heat exchange device under test. The first outlet of the third valve body is connected to the input end of the detection mechanism via the fifth valve body. The second outlet of the third valve body is connected to the inlet of the fourth valve body. The outlet of the fourth valve body is connected to an external collection device. The control and adjustment of the working states of the conveying mechanism and the exhaust mechanism, thereby switching the heat storage and heat exchange performance testing system to heat storage mode, specifically includes: The control conveying mechanism includes closing the first valve body, closing the second valve body, and stopping the conveying pump; The system controls the closure of the first output port of the third valve body and the fifth valve body of the exhaust mechanism, and controls the opening of the input port and the second output port of the third valve body, and controls the opening of the fourth valve body. The heat storage and heat exchange performance testing system switches to heat storage mode.

3. The method for testing heat storage and heat exchange performance according to claim 2, characterized in that, When the temperature of the heat storage material in the heat storage and heat exchange device under test meets the preset heating conditions, the timing is stopped to obtain the heating time, specifically including: The timing stops when the temperature of the heat storage material in the heat storage and heat exchange device under test is greater than or equal to the preset heating temperature. Record the time required for the heat storage material to heat up from room temperature to the preset heating temperature to obtain the heating time.

4. The method for testing heat storage and heat exchange performance according to claim 2, characterized in that, The control and adjustment of the working states of the conveying mechanism and the exhaust mechanism, so that the heat storage and heat exchange performance testing system switches to exhaust mode, specifically includes: The control conveying mechanism includes the opening of the first valve body, the opening of the second valve body, and the start of operation of the conveying pump; The first output port of the third valve body and the fifth valve body of the exhaust mechanism are closed, and the input port and the second output port of the third valve body are opened. The fourth valve body is opened, and the heat storage and heat exchange performance detection system is switched to exhaust mode.

5. The method for testing heat storage and heat exchange performance according to claim 4, characterized in that, After exhausting the heat, the operating status of the conveying mechanism and the exhaust mechanism is controlled and adjusted to switch the heat storage and heat exchange performance testing system to the heat release mode. This process specifically includes the following steps: Obtain the outlet temperature of the heat storage heat exchange device under test. When the obtained outlet temperature is lower than the preset heat release stop exhaust temperature, it indicates that the exhaust is complete. The control conveying mechanism includes the opening of the first valve body, the opening of the second valve body, and the start of operation of the conveying pump; The second output port of the third valve body and the fourth valve body of the exhaust mechanism are closed, and the input port and the first output port of the third valve body are opened. The fifth valve body is opened, and the heat storage and heat exchange performance detection system is switched to heat release mode.

6. A heat storage and heat exchange performance testing system, characterized in that, The heat storage and heat exchange performance testing system adopts the heat storage and heat exchange performance testing method as described in any one of claims 1-5 to achieve operation control. The heat storage and heat exchange performance testing system includes a control device and a conveying mechanism, an exhaust mechanism, and a testing mechanism, which are electrically connected to the control device respectively. The input end of the conveying mechanism is used to connect to an external water supply device, the output end of the conveying mechanism is used to connect to the inlet of the heat storage and heat exchange device to be tested, the exhaust mechanism is used to connect to the outlet of the heat storage and heat exchange device to be tested, the first output end of the exhaust mechanism is connected to the testing mechanism, and the second output end of the exhaust mechanism is used to connect to an external collection device.

7. The heat storage and heat exchange performance testing system according to claim 6, characterized in that, The conveying mechanism includes a first valve body, a conveying pump, and a second valve body, which are electrically connected to the control device respectively. The inlet of the first valve body is used to connect to an external water supply device, the outlet of the first valve body is connected to the inlet of the second valve body through the conveying pump, and the outlet of the second valve body is used to connect to the inlet of the heat storage and heat exchange device to be tested.

8. The heat storage and heat exchange performance testing system according to claim 6, characterized in that, The exhaust mechanism includes a third valve body, a fourth valve body, and a fifth valve body, which are electrically connected to the control device respectively. The inlet of the third valve body is used to connect to the outlet of the heat storage and heat exchange device to be tested. The first outlet of the third valve body is connected to the input end of the detection mechanism through the fifth valve body. The second outlet of the third valve body is connected to the inlet of the fourth valve body. The outlet of the fourth valve body is used to connect to an external collection device.

9. A heat storage and heat exchange performance testing system according to claim 6, characterized in that, The detection mechanism includes a water intake, which is equipped with a weighing device for measuring water volume and a temperature measuring device for detecting water temperature. The weighing device and the temperature measuring device are electrically connected to the control device.

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