Quick automatic phase-change material thermocycling determination multi-hole-position device and determination method thereof
A technology of phase change material, cold and heat cycle, applied in measurement devices, material thermal analysis, analysis materials, etc., can solve the problems of time-consuming and laborious measurement process, large error in experimental results, low work efficiency, etc., and achieve rapid heating and cooling. , reduce errors and improve the effect of accuracy
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Embodiment 1
[0078] This embodiment provides a porous position device and its measurement method for measuring the cold and heat cycle of phase change materials, such as figure 1 As shown, the device includes a sample stage 1, a cold liquid tank 3, a refrigeration system, a control system 21 and a measurement output system 23;
[0079] Wherein, the sample table 1 has a cubic structure, and five holes are opened on the top as the sample chamber 4. The sample table 1 includes an electric heater 5, a brine pipeline 6, a first temperature sensor 7, and a third temperature sensor. 9 and a fourth temperature sensor 10, such as image 3 As shown, the electric heater 5 includes 12 electric heating tubes and the electric heating tubes are arranged in an array, the brine pipeline 6 includes 6 serpentine tubes arranged in an array, the electric heater 5 and the carrier The refrigerant pipeline 6 is arranged crosswise inside the sample stage 1; the electric heater 5 is arranged on one side of the sam...
Embodiment 2
[0093] This embodiment provides a porous position device for measuring the cold and heat cycle of phase change materials and its measurement method. The structure of the device refers to the structure of the device in Example 1, the only difference is that the number of sample chambers 4 is 6, and the electrical The heater 5 includes 14 electric heating tubes arranged in an array, and the brine pipeline 6 includes 8 serpentine tubes arranged in an array.
[0094] The assay method of the device is the same as in Example 1.
Embodiment 3
[0096] Using the device in Example 1 to measure a certain hydrated salt phase change material, the phase change temperature of the hydrated salt phase change material is about 29° C., and the latent heat of phase change is 130 kJ / kg.
[0097] Set the heating temperature of the electric heater 5 to 50°C, the temperature of the cold liquid tank 3 to 0°C, and the upper and lower limits of the temperature of the two temperature sensors in the sample stage 1 to be 40°C and 10°C. Take 30g of the sample and put it into the test tube into the sample chamber 4, put the temperature probe into the sample and connect the record output device. Click the start button on the touch screen 22 and the measurement output system 23, the device runs automatically. When the required number of cycles is reached, stop the operation of the device, take out the test tube sample, and export the "time-temperature" curve and data.
[0098] In this example, it takes about 5 minutes to complete one cycle, ...
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