Visual experiment device for strengthening phase-change heat transfer

Abstract

The utility model relates to the technical field of testing devices, and particularly discloses a visual experimental device for strengthening phase-change heat transfer, which comprises an electric control box, a visual PCM heat storage box and a data acquisition module, the visual PCM heat storage box and the data acquisition module are mounted on the electric control box, a heat exchange device is arranged in the visual PCM heat storage box, and a heating assembly and a cooling assembly are arranged in the heat exchange device. A temperature measuring assembly is inserted into the heat exchange device and comprises a temperature measuring sensor, a metal probe block and a sleeve, the cooling assembly comprises a cooling pipeline and a water cooling circulation system, a first temperature collector and a second temperature collector are installed at the two ends of the cooling pipeline respectively, and the water cooling circulation system is used for conveying cold fluid into the cooling pipeline. A flow meter is mounted on the pipeline in the conveying direction, and the temperature measuring sensor, the flow meter, the first temperature collector and the second temperature collector are all electrically connected with a data acquisition module. According to the utility model, the measuring precision and the testing efficiency are improved, and the performance change of the phase-change material can be analyzed.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing devices, and in particular relates to a visual experimental device for strengthening phase change heat transfer. Background Art

[0002] Phase change materials (PCMs) are specialized materials that can change state while maintaining a constant temperature, absorbing or releasing large amounts of latent heat. Their unique phase change process offers promising applications in energy storage. This process not only exhibits significant changes in the material's physical properties but also enables efficient energy storage and release. It is a key cornerstone for building a green and energy-efficient society and has therefore been included in my country's national key R&D and utilization programs.

[0003] Phase change energy storage technology has been developed based on the property of phase change materials that they absorb or release large amounts of heat during the transformation process. During the energy storage process, heat absorption can be divided into three stages: sensible heat absorption before the phase change, latent heat absorption during the phase change, and sensible heat absorption after the phase change is complete. In order to accurately evaluate the performance of phase change materials, the temperature and flow rate of the inlet and outlet air must be precisely measured during the experiment to calculate the total heat and overall cycle efficiency during the heat storage or release process. At the same time, by monitoring the temperature changes in the heat storage box over time, the specific heat absorption or release of the phase change material, as well as the heat storage or release efficiency of the material, can be further analyzed.

[0004] However, current phase change material performance testing faces two major challenges: first, the material's inherently low thermal conductivity directly restricts the efficiency of heat transfer, leading to extended testing cycles; second, precise control of the heating and cooling stages during the test is difficult and prone to introducing errors, affecting the accuracy of temperature measurement. This in turn makes the phase change curve less accurate, making it difficult to fully reflect the material's true performance.

[0005] Therefore, we propose a visualization experimental device for enhanced phase change heat generation to solve the above technical problems. Utility Model Content

[0006] In order to solve the technical problems existing in the above-mentioned prior art, the utility model proposes a visualization experimental device for enhancing phase change heat generation.

[0007] The technical solutions adopted in this utility model are as follows:

[0008] A visualization experimental device for enhanced phase change heat transfer, comprising an electrical control box, a visualization PCM heat storage box and a data acquisition module, wherein the visualization PCM heat storage box is installed on the electrical control box, a heat exchange device is provided in the visualization PCM heat storage box, a heating component and a cooling component are provided inside the heat exchange device, a temperature measuring component is inserted and installed on the heat exchange device, the temperature measuring component comprises a temperature sensor, a metal probe block and a sleeve, the metal probe block is installed at the end of the temperature sensor and extends into the heat exchange device, the sleeve is sleeved on the outside of the temperature sensor, the cooling component comprises a cooling pipe and a water cooling circulation system, the cooling pipe is installed in the heat exchange device and a first temperature collector and a second temperature collector are respectively installed at both ends of the heat exchange device, the water cooling circulation system is used to transport cold fluid to the cooling pipe, and a flow meter is installed on the pipe in the transport direction, the temperature sensor, the flow meter, the first temperature collector and the second temperature collector are all electrically connected to the data acquisition module.

[0009] In a further technical solution, the heat exchange device includes a heat exchange tube body, the heating assembly and the cooling pipe are both arranged in the heat exchange tube body, the heat exchange tube body is provided with an exhaust port and a temperature measuring hole, and the sleeve is detachably installed at the temperature measuring hole.

[0010] In a further technical solution, an openable cover is provided at the opening of the visual PCM thermal storage tank, and a transparent window is provided on the cover.

[0011] In a further technical solution, a scale is provided on the transparent window.

[0012] In a further technical solution, the heating assembly includes a fin heating tube and a heating controller. The fin heating tube is installed inside the tube wall of the heat exchange device. The fin heating tube is electrically connected to the heating controller. A heating button is connected to the heating controller.

[0013] In a further technical solution, the water cooling circulation system includes a circulation pump and a water cooling box, the circulation pump and the water cooling box are connected, the two ends of the cooling pipe are respectively connected to the circulation pump and the water cooling box, and the circulation pump and the water cooling box are respectively connected to a water pump button and a refrigeration button.

[0014] In a further technical solution, a third temperature collector is provided on the water cooling box, and the third temperature collector is electrically connected to the data acquisition module.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] Improved measurement accuracy: The specially designed temperature measurement component improves the temperature sensitivity of the temperature sensor through the heat insulation effect of the sleeve and the increase of the detection area through the metal probe block, thereby improving the temperature measurement accuracy and laying a solid foundation for the accuracy of the test results.

[0017] Easy to observe and analyze: The design of the visual PCM thermal storage tank makes the phase change process intuitively visible, providing researchers with an intuitive and convenient means of observation, which helps to more deeply understand and analyze the performance changes of phase change materials.

[0018] Improved test efficiency: By increasing the heat exchange area, heat can be transferred to the heat exchange medium more effectively, thereby improving the heat exchange efficiency, greatly shortening the test cycle, and effectively improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal connections of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the heat exchange device of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the temperature measurement component of the utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See Figures 1-4The present invention provides a visualization experimental device for enhancing phase change heat transfer, comprising an electric control box 1, a visualization PCM heat storage box 2, and a data acquisition module 3. The visualization PCM heat storage box 2 is mounted on the electric control box 1. A heat exchange device is provided inside the visualization PCM heat storage box 2. A heating component and a cooling component are provided inside the heat exchange device. A temperature measuring component 4 is inserted and installed on the heat exchange device. The temperature measuring component 4 comprises a temperature sensor 41, a metal probe block 42, and a sleeve 43. The metal probe block 42 is mounted on the end of the temperature sensor 41. And extends into the heat exchange device, the sleeve 43 is sleeved on the outside of the temperature sensor 41, the cooling assembly includes a cooling pipe 5 and a water-cooling circulation system, the cooling pipe 5 is installed in the heat exchange device and a first temperature collector 6 and a second temperature collector 7 are respectively installed at both ends of the heat exchange device. The water-cooling circulation system is used to transport cold fluid to the cooling pipe 5, and a flow meter 8 is installed on the pipe in the transport direction. The temperature sensor 41, the flow meter 8, the first temperature collector 6 and the second temperature collector 7 are all electrically connected to the data acquisition module 3.

[0026] When this device is used to test phase change materials, the specific test process is as follows:

[0027] Preparation: First, a thorough inspection of all components within the device ensures they are in normal and stable working order to ensure smooth testing. Then, the phase change material is placed in the heat exchanger within the visualized PCM thermal storage tank 2 to facilitate subsequent observation of the phase change process.

[0028] Start the test: Start the heating component to heat the phase change material to start the phase change process. At the same time, the data acquisition module 3 starts recording the data from the temperature sensor 41, flow meter 8, first temperature collector 6 and second temperature collector 7 to ensure the continuity and integrity of the data.

[0029] Phase Change Heat Absorption Process Monitoring: During the heating process, the PCM thermal storage tank 2 visualizes the state changes of the phase change material, observing its transition from solid to liquid. Complete melting of the phase change material completes the phase change heat absorption process. At this point, combined with key parameters such as temperature and flow recorded by the data acquisition module 3, a comprehensive analysis is performed to evaluate the heat absorption performance of the phase change material.

[0030] Phase Change Heat Release Process Monitoring: When the PCM reaches the predetermined temperature or completes its phase change, the cooling assembly activates, delivering cold fluid to the heat exchanger via cooling pipe 5 to cool the PCM. During this process, the PCM thermal storage tank 2 continuously monitors the PCM's transition from liquid to solid until it fully solidifies, marking the end of the heat release process. Simultaneously, the data acquisition module 3 continuously records relevant data, providing a reliable basis for subsequent heat release performance analysis.

[0031] Data analysis: After the test is completed, the corresponding phase change curve is drawn based on the comprehensive data collected by the data acquisition module 3. Through in-depth analysis of the phase change curve, key performance indicators such as the heat storage capacity, heat release efficiency, and thermal conductivity of the phase change material can be accurately evaluated, providing strong data support for the research and application of phase change materials.

[0032] Through the above test process, the beneficial effects that can be obtained are as follows:

[0033] Improved measurement accuracy: The specially designed temperature measurement component 4 is used to improve the temperature sensitivity of the temperature sensor 41 through the heat insulation effect of the sleeve 43 and the increase in the detection area through the metal probe block 42, thereby improving the temperature measurement accuracy and laying a solid foundation for the accuracy of the test results.

[0034] Easy to observe and analyze: The design of the visual PCM thermal storage tank 2 makes the phase change process intuitively visible, providing researchers with an intuitive and convenient means of observation, which helps to more deeply understand and analyze the performance changes of phase change materials.

[0035] In a specific embodiment, see Figure 3 The heat exchange device includes a heat exchange tube body 9, the heating component and the cooling pipe 5 are both arranged in the heat exchange tube body 9, the heat exchange tube body 9 is provided with an exhaust port 10 and a temperature measuring hole 11, and the sleeve 43 is detachably installed at the temperature measuring hole 11.

[0036] The heat exchange tube 9 serves as the primary location for heat exchange, integrating the heating assembly and cooling pipe 5 within it. This not only reduces the space occupied by the equipment but also makes the entire device more compact. An exhaust port 10 provided on the heat exchange tube 9 exhausts gas from the device, ensuring internal pressure balance and minimizing the impact on test results. The temperature measuring hole 11 allows for the installation of the temperature measuring assembly 4, making temperature measurement more accurate and convenient.

[0037] In a specific embodiment, see Figure 1 The opening of the visual PCM thermal storage box 2 is provided with an openable cover 12 , and the cover 12 is provided with a transparent window 13 .

[0038] By installing a cover plate 12 at the opening of the visual PCM thermal storage tank 2 and a transparent window 13 on it, researchers can directly observe the phase change process, thereby more accurately determining key parameters such as the phase change point and phase change rate of the phase change material. It also provides a certain degree of protection, preventing the phase change material from splashing or leaking during the experiment, thereby ensuring the safety of experimenters and equipment.

[0039] In a specific embodiment, a scale is provided on the transparent window 13 .

[0040] The design of a scale on the transparent window 13 allows researchers to more directly and accurately measure the changes in the size of the phase change material within the window, such as the rise and fall of the liquid level, the expansion or contraction of the solid, etc. This intuitive measurement method helps reduce errors and improve the accuracy of test data. In addition, the scale provides a reference. For example, when taking photos for image processing and analysis, the scale on the photo facilitates the precise location of the solid-liquid interface in teaching experiments.

[0041] In a specific embodiment, see Figure 2 and Figure 3 The heating assembly includes a fin heating tube 14 and a heating controller 15. The fin heating tube 14 is installed inside the tube wall of the heat exchange device. The fin heating tube 14 is electrically connected to the heating controller 15. A heating button is connected to the heating controller 15.

[0042] By designing a finned heating tube 14 and installing it inside the tube wall of the heat exchange device, the heat exchange area is increased, allowing heat to be more effectively transferred to the heat exchange medium, thereby improving heat exchange efficiency, greatly shortening the test cycle, and effectively improving test efficiency. In addition, the equipped heating controller 15 is combined with a heating button. Through simple operation, researchers can quickly start or adjust the heating power, achieving rapid heating or precise temperature control, which is convenient for use.

[0043] In a specific embodiment, see Figure 2 The water cooling circulation system includes a circulation pump 16 and a water cooling box 17. The circulation pump 16 and the water cooling box 17 are connected. The two ends of the cooling pipe 5 are respectively connected to the circulation pump 16 and the water cooling box 17. The circulation pump 16 and the water cooling box 17 are respectively connected to a water pump button and a refrigeration button.

[0044] The circulating pump 16 serves as a power source and can drive the cold fluid to circulate between the cooling pipe 5 and the water cooling box 17, thereby realizing the rapid absorption and transfer of heat inside the heat exchange device. The water cooling box 17 is responsible for dissipating the absorbed heat through the refrigeration system to maintain the low temperature of the cooling medium. This efficient circulation mechanism ensures that the heat exchange device can obtain a continuous and stable cooling effect. It enables the heat exchange device to be maintained within the required temperature range during the test, thereby improving the accuracy and reliability of the test. Similarly, the setting of the water pump button and the refrigeration button allows the operator to easily start, stop or adjust the operating status of the circulating pump 16 and the refrigeration system, simplifying the operating process and improving work efficiency.

[0045] In a specific embodiment, see Figure 2The water cooling box 17 is provided with a third temperature collector 18 , and the third temperature collector 18 is electrically connected to the data acquisition module 3 .

[0046] Based on the data provided by the third temperature collector 18, the temperature inside the water cooling box 17 can be measured in real time and accurately, so that the operating speed of the circulation pump 16 and the power of the refrigeration system can be dynamically adjusted to optimize the cooling efficiency and ensure the accuracy and reliability of the data.

[0047] It is worth mentioning that the data acquisition module 3 in the present invention is a relatively mature product in the prior art. It can be collected by a computer. Those skilled in the art can fully realize it, so it will not be described here in detail.

[0048] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

[0049] List of reference numerals:

[0050] 1-Electric control box

[0051] 2-Visual PCM thermal storage tank

[0052] 3-Data acquisition module

[0053] 4-Temperature measurement component

[0054] 41-Temperature sensor

[0055] 42-Metal probe block

[0056] 43-sleeve

[0057] 5-Cooling pipe

[0058] 6-First temperature collector

[0059] 7-Second temperature collector

[0060] 8-Flow meter

[0061] 9-Heat exchange tube

[0062] 10-Exhaust port

[0063] 11-Temperature measuring hole

[0064] 12-Cover

[0065] 13-Transparent window

[0066] 14-Fin heating tube

[0067] 15-Heating controller

[0068] 16-Circulation pump

[0069] 17-Water cooling box

[0070] 18- The third temperature collector.

Claims

1. A visual experimental device for enhancing phase change heat generation, characterized in that: It includes an electric control box (1), a visual PCM heat storage box (2) and a data acquisition module (3); The visual PCM heat storage box (2) is installed on the electric control box (1), a heat exchange device is provided in the visual PCM heat storage box (2), a heating component and a cooling component are provided inside the heat exchange device, and a temperature measuring component (4) is inserted and installed on the heat exchange device; The temperature measuring assembly (4) comprises a temperature sensor (41), a metal probe block (42) and a sleeve (43); the metal probe block (42) is mounted on the end of the temperature sensor (41) and extends into the heat exchange device; the sleeve (43) is sleeved on the outside of the temperature sensor (41); The cooling assembly comprises a cooling pipe (5) and a water-cooling circulation system. The cooling pipe (5) is installed in a heat exchange device, and a first temperature collector (6) and a second temperature collector (7) are respectively installed at both ends of the heat exchange device. The water-cooling circulation system is used to transport cold fluid into the cooling pipe (5), and a flow meter (8) is installed on the pipe in the transport direction. The temperature sensor (41), the flow meter (8), the first temperature collector (6), and the second temperature collector (7) are all electrically connected to the data acquisition module (3).

2. The visualization experiment device according to claim 1, characterized in that: The heat exchange device comprises a heat exchange tube body (9), the heating assembly and the cooling pipe (5) are both arranged in the heat exchange tube body (9), the heat exchange tube body (9) is provided with an exhaust port (10) and a temperature measuring hole (11), and the sleeve (43) is detachably mounted at the temperature measuring hole (11).

3. The visualization experiment device according to claim 1, characterized in that: An openable cover plate (12) is provided at the opening of the visual PCM thermal storage box (2), and a transparent window (13) is provided on the cover plate (12).

4. The visualization experiment device according to claim 3, characterized in that: A scale is provided on the transparent window (13).

5. The visualization experiment device according to claim 1, characterized in that: The heating assembly comprises a fin heating tube (14) and a heating controller (15); the fin heating tube (14) is installed inside the tube wall of the heat exchange device; the fin heating tube (14) is electrically connected to the heating controller (15); and a heating button is connected to the heating controller (15).

6. The visualization experiment device according to claim 1, characterized in that: The water cooling circulation system comprises a circulation pump (16) and a water cooling box (17), wherein the circulation pump (16) and the water cooling box (17) are in communication, and the two ends of the cooling pipe (5) are in communication with the circulation pump (16) and the water cooling box (17), respectively. The circulation pump (16) and the water cooling box (17) are respectively connected with a water pump button and a refrigeration button.

7. The visualization experiment device according to claim 6, characterized in that: The water cooling box (17) is provided with a third temperature collector (18), and the third temperature collector (18) is electrically connected to the data acquisition module (3).

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