CN218917254U - Device for measuring thermal performance of phase-change energy storage component - Google Patents
Device for measuring thermal performance of phase-change energy storage component Download PDFInfo
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- CN218917254U CN218917254U CN202222849571.5U CN202222849571U CN218917254U CN 218917254 U CN218917254 U CN 218917254U CN 202222849571 U CN202222849571 U CN 202222849571U CN 218917254 U CN218917254 U CN 218917254U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model discloses a device for measuring thermal properties of a phase change energy storage member. The device includes two heat transfer boards, and the inside of heat transfer board is equipped with first temperature sensor and is used for detecting its inside temperature, and the upper and lower surface at the phase change energy storage component test block that awaits measuring is established in the inboard subsides of two heat transfer boards, and the upper and lower surface of the phase change energy storage component test block that awaits measuring all is equipped with second temperature sensor and heat flow sensor, and the outside of two heat transfer boards all is equipped with semiconductor refrigerator, and semiconductor refrigerator is connected with the power commutator electricity, and the power commutator is connected with outside power electricity, and first temperature sensor, second temperature sensor, heat flow sensor and power commutator all are connected with control system electricity. The utility model can realize the function of rapid heat supply or refrigeration, and can synchronously monitor the temperature change of the sample when the phase-change energy storage component is subjected to thermal cycle test so as to study the thermophysical property of the sample, and can also test the thermophysical property of the low-temperature phase-change material.
Description
Technical Field
The utility model relates to the technical field of thermal performance detection, in particular to a device for measuring thermal performance of a phase-change energy storage component.
Background
The ability of a phase change material to store or release thermal energy is largely dependent on the heat storage capacity, the thermal conductivity, the melting temperature, and the outdoor environment to which it is exposed.
From a thermal point of view, the phase change energy storage member and phase change material powder thermal physical characterization methods are very different. When the phase change material powder is characterized, the thermal property of the material can be characterized by using a classical calorimetric method. However, characterization of phase change energy storage components incorporated into a solid matrix (mortar or gypsum) is not applicable. The existing phase-change energy storage component characterization mainly uses a heat flow meter method, a sample is placed between two aluminum plate heat exchangers connected with a constant temperature tank, the constant temperature tank mainly realizes temperature regulation through oil bath or water bath, and the defects of low temperature regulation rate, narrow temperature regulation range, difficulty in testing the thermal performance of a low-temperature phase-change material and the like exist.
Disclosure of Invention
The present utility model aims to address the above-mentioned deficiencies of the prior art by providing a device for measuring thermal properties of a phase change energy storage member.
The device for measuring the thermal performance of the phase-change energy storage component comprises two heat exchange plates, wherein a first temperature sensor is arranged in each heat exchange plate and used for detecting the internal temperature of each heat exchange plate, the inner sides of the two heat exchange plates are attached to the upper surface and the lower surface of a phase-change energy storage component test block to be measured, the upper surface and the lower surface of the phase-change energy storage component test block to be measured are respectively provided with a second temperature sensor and a heat flow sensor, the outer sides of the two heat exchange plates are respectively provided with a semiconductor refrigerator, the semiconductor refrigerators are electrically connected with a power supply commutator, the power supply commutator is electrically connected with an external power supply, and the first temperature sensor, the second temperature sensor, the heat flow sensor and the power supply commutator are electrically connected with a control system.
Further, the first temperature sensor and the second temperature sensor are thermocouples.
Further, the control system comprises a temperature control structure and a data acquisition structure, the first temperature sensor and the power commutator are electrically connected with the temperature control structure, and the second temperature sensor and the heat flow sensor are electrically connected with the data acquisition structure.
Further, a water cooling jacket is also arranged on the semiconductor refrigerator.
Further, the heat exchange plate is an aluminum plate.
Further, the device is wrapped with a heat insulation layer.
Further, the heat insulation layer is a polyethylene expansion foam layer.
The semiconductor refrigerator is used for replacing a constant temperature tank for realizing temperature regulation through oil bath or water bath, the semiconductor refrigerator can realize the function of rapid heat supply or refrigeration, and when the thermal cycle test is carried out on the phase-change energy storage component, the monitoring of the temperature change of a sample can be synchronously realized so as to research the thermal physical property of the sample, and the thermal physical property of the low-temperature phase-change material can be tested.
In the utility model, the semiconductor refrigerator is electrically connected with the power supply commutator, the power supply commutator is electrically connected with an external power supply, the first temperature sensor and the power supply commutator are electrically connected with the control system, the temperature of the heat exchange plate is preset through the control system, the control system controls the semiconductor refrigerator to heat or refrigerate through the power supply commutator, thereby realizing the accurate control of the temperature of the heat exchange plate, changing the temperature change of the heat exchange plate through adjusting the temperature setting of the control system, widening the temperature test range, realizing the accurate control and quick response of the temperature adjustment, and simplifying the device structure.
The second temperature sensor, the heat flow sensor and the control system are electrically connected, the second temperature sensor and the heat flow sensor are used for measuring temperature change and heat flux of the sample during the test, and detected data are transmitted to the control system to record the data.
Drawings
FIG. 1 is a schematic diagram of an apparatus for measuring thermal properties of a phase change energy storage member according to the present utility model;
fig. 2 isbase:Sub>A sectional view ofbase:Sub>A-base:Sub>A of fig. 1.
1. A heat exchange plate; 2. a first temperature sensor; 3. a phase change energy storage component test block; 4. a second temperature sensor; 5. a heat flow sensor; 6. a semiconductor refrigerator; 7. an external power source; 8. a power commutator; 9. a control system; 91. a temperature control structure; 92. a data acquisition structure; 10. and (5) a water cooling jacket.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 and 2, the device for measuring the thermal performance of the phase-change energy storage component of the utility model comprises two heat exchange plates 1, wherein a first temperature sensor 2 is arranged in each heat exchange plate 1 and used for detecting the internal temperature of the heat exchange plates, the inner sides of the two heat exchange plates 1 are attached to the upper surface and the lower surface of a phase-change energy storage component test block 3 to be measured, the upper surface and the lower surface of the phase-change energy storage component test block 3 to be measured are respectively provided with a second temperature sensor 4 and a heat flow sensor 5, the outer sides of the two heat exchange plates 1 are respectively provided with a semiconductor refrigerator 6, the semiconductor refrigerators 6 are electrically connected with a power supply commutator 8, the power supply commutator 8 is electrically connected with an external power supply 7, and the first temperature sensor 2, the second temperature sensor 4, the heat flow sensor 5 and the power supply commutator 8 are electrically connected with a control system 9.
According to the utility model, the semiconductor refrigerator 6 is used for replacing a constant temperature tank for realizing temperature regulation through an oil bath or a water bath, the semiconductor refrigerator 6 can realize the function of rapid heat supply or refrigeration, and when the phase change energy storage component is subjected to thermal cycle test, the monitoring of the temperature change of a sample can be synchronously realized so as to research the thermophysical property of the sample, and the thermophysical property of the low-temperature phase change material can be tested.
In the utility model, the semiconductor refrigerator 6 is electrically connected with the power supply reverser 8, the power supply reverser 8 is electrically connected with the external power supply 7, the first temperature sensor 2 and the power supply reverser 8 are electrically connected with the control system 9, the temperature of the heat exchange plate 1 is preset through the control system 9, the control system 9 controls the semiconductor refrigerator 6 to heat or refrigerate through the power supply reverser 8, so that the accurate control of the temperature of the heat exchange plate 1 is realized, the temperature change of the heat exchange plate 1 is changed by adjusting the temperature setting of the control system 9, the temperature test range is widened, the regulation and control are flexible, the accurate control and the quick response of the temperature regulation can be realized, and meanwhile, the device structure is simplified.
The second temperature sensor 4, the heat flow sensor 5 and the control system 9 are electrically connected, the second temperature sensor 4 and the heat flow sensor 5 to measure the temperature change and heat flux through the sample during the test and to transmit the detected data to the control system 9 to record the data.
The structures of the first temperature sensor 2 and the second temperature sensor 4 are not limited herein, and examples thereof include: the first temperature sensor 2 and the second temperature sensor 4 may each be a thermocouple.
The structure of the control system 9 is various, in this embodiment, the control system 9 includes a temperature control structure 91 and a data acquisition structure 92, the first temperature sensor 2 and the power commutator 8 are electrically connected with the temperature control structure 91, and the second temperature sensor 4 and the heat flow sensor 5 are electrically connected with the data acquisition structure 92. When the first temperature sensor 2 detects that the temperature of the heat exchange plate 1 does not reach the preset value, the temperature control structure 91 controls the power commutator 8 to change the voltage direction, so as to control the semiconductor refrigerator 6 to heat or refrigerate to enable the temperature of the heat exchange plate 1 to reach the preset temperature. The second temperature sensor 4 and the heat flow sensor 5 to measure temperature changes and heat flux through the sample during the test and to transmit the detected data to the data acquisition structure 92 to record the data.
The semiconductor refrigerator 6 can be further provided with a water cooling jacket 10, the water cooling jacket 10 is respectively connected with a water inlet and a water outlet, and the water cooling jacket 10 is fixed on one side of the semiconductor refrigerator 6 for heat dissipation; the semiconductor refrigerator 6 can generate a large amount of heat energy in the heat supply or refrigeration process of the heat exchange plate 1, the water cooling jacket 10 can effectively dissipate heat, the semiconductor refrigerator 6 is prevented from being overheated and burnt out, and the device can operate efficiently.
The heat exchanger plate 1 may be an aluminum plate, i.e. an aluminum plate type heat exchanger.
The device is externally wrapped with a thermal barrier (not shown) wherein the barrier may be a layer of polyethylene expanded foam which is used to wrap the device and form an insulating cover around the device which will minimize heat transfer from the sides of the sample to the surrounding environment, and for ease of use the layer of polyethylene expanded foam may be split into two portions which facilitate placement of the sample between two aluminium plates.
The device for measuring the thermal performance of the phase-change energy storage component can be used for firstly preparing the phase-change energy storage component test block 3, wherein the test block is in a cuboid shape according to the design requirement of a thermal system testing device, the width of the test block is smaller than that of the heat exchange plate 1, and the surface of the phase-change energy storage component test block 3 is flat and smooth.
After the phase-change energy storage component test block 3 is manufactured, the device is used for testing the thermal property of the test block, and the test block is analyzed according to the test result of the thermal system, so that the thermal property of the phase-change energy storage material, including the phase-change temperature, the phase-change latent heat, the heat conductivity, the specific heat, the circulating heat stability and the like, is calculated. The phase change temperature, latent heat and heat conductivity are key indexes for measuring the performance of the phase change energy storage material.
Measurement of thermal conductivity
The thermal conductivity of the phase change energy storage member is measured at temperatures below and above the melting range of the phase change energy storage material. They are expressed as solid thermal conductivity (below the melting point) and liquid thermal conductivity (above the melting point). First, the temperature setting of the temperature control structure 91 is adjusted to maintain the two heat exchange plates 1 at a constant temperature T init Until the heat flux is constant (thermal steady state conditions). Then, the temperature control structure 91 is adjusted to bring the temperature from T init Change to T end The temperature change is applied to the top heat exchange plate 1 (aluminum plate type heat exchanger) and maintained at T end While the other heat exchanger plate 1 is held at T init Until a thermally stable state is reached. After reaching thermal steady state conditions, the top (T top ) And bottom (T) bottom ) The average temperature of the faces was recorded by the following relationship for the mass and the average heat flux on both faces
The thermal conductivity (lambda) is calculated by the formula (1), wherein A and d are each a phaseThe area and thickness of the energy storage member are varied.
Evaluation of specific heat/latent heat
The latent heat and specific heat capacity of the phase change energy storage member are measured by the apparatus of the present utility model and then calculated by equation (2). The phase change energy storage component test block 3 is initially at T init The temperature is constant. Thereafter, the temperature setting of the temperature control structure 91 is adjusted to make the temperatures of the two heat exchange plates 1 change from T init Raised to T end Thereby heating it. T (T) init And T end Is determined according to the phase transition temperature of the phase change material. During testing, phase change energy storage member test block 3 (T top And T bottom ) Average heat flux on both sides
And the temperature are determined by the heat flow sensor 5 and the second temperature sensor 4, respectively, wherein the specific heat capacity (C p ) Calculated by equation (2), m is the mass of the sample.
Evaluation of thermal stability
The phase change energy storage member test blocks 3 can be subjected to thermal cycling by the device to investigate their thermal stability. In order to accelerate the thermal cycling effect, the temperature change of each thermal cycle can be set by adjusting the temperature control structure 91, the semiconductor refrigerator 6 can realize the function of rapid heating or cooling, and the monitoring of the temperature change of the sample can be synchronously realized when the thermal cycle test is performed on the phase-change energy storage component test block 3 so as to study the thermophysical property of the sample.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the foregoing examples are provided for the purpose of illustration only and are not intended to limit the scope of the utility model, and that various modifications or additions and substitutions to the described specific embodiments may be made by those skilled in the art without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the accompanying claims. It should be understood by those skilled in the art that any modification, equivalent substitution, improvement, etc. made to the above embodiments according to the technical substance of the present utility model should be included in the scope of protection of the present utility model.
Claims (7)
1. An apparatus for measuring thermal properties of a phase change energy storage member, comprising: including two heat transfer boards (1), the inside of heat transfer board (1) is equipped with first temperature sensor (2) and is used for detecting its inside temperature, and the upper and lower surface at waiting to measure phase change energy storage component test block (3) is established to the inboard subsides of two heat transfer boards (1), and the upper and lower surface of waiting to measure phase change energy storage component test block (3) all is equipped with second temperature sensor (4) and heat flow sensor (5), two the outside of heat transfer board (1) all is equipped with semiconductor refrigerator (6), semiconductor refrigerator (6) are connected with power commutator (8) electricity, and power commutator (8) are connected with external power source (7) electricity, first temperature sensor (2), second temperature sensor (4), heat flow sensor (5) and power commutator (8) all are connected with control system (9) electricity.
2. An apparatus for measuring thermal properties of a phase change energy storage member as defined in claim 1, wherein: the first temperature sensor (2) and the second temperature sensor (4) are thermocouples.
3. An apparatus for measuring thermal properties of a phase change energy storage member as defined in claim 1, wherein: the control system (9) comprises a temperature control structure (91) and a data acquisition structure (92), the first temperature sensor (2) and the power commutator (8) are electrically connected with the temperature control structure (91), and the second temperature sensor (4) and the heat flow sensor (5) are electrically connected with the data acquisition structure (92).
4. An apparatus for measuring thermal properties of a phase change energy storage member as defined in claim 1, wherein: the semiconductor refrigerator (6) is also provided with a water cooling jacket (10).
5. An apparatus for measuring thermal properties of a phase change energy storage member as defined in claim 1, wherein: the heat exchange plate (1) is an aluminum plate.
6. An apparatus for measuring thermal properties of a phase change energy storage member as defined in claim 1, wherein: the device is wrapped with a heat insulation layer.
7. An apparatus for measuring thermal properties of a phase change energy storage member as defined in claim 6, wherein: the heat insulation layer is a polyethylene expansion foam layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222849571.5U CN218917254U (en) | 2022-10-27 | 2022-10-27 | Device for measuring thermal performance of phase-change energy storage component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222849571.5U CN218917254U (en) | 2022-10-27 | 2022-10-27 | Device for measuring thermal performance of phase-change energy storage component |
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| CN218917254U true CN218917254U (en) | 2023-04-25 |
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| CN202222849571.5U Active CN218917254U (en) | 2022-10-27 | 2022-10-27 | Device for measuring thermal performance of phase-change energy storage component |
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- 2022-10-27 CN CN202222849571.5U patent/CN218917254U/en active Active
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