A porous position device and its measurement method for rapid and automatic measurement of phase change material cooling and heating cycles
A technology of phase change materials and cooling and heating cycles, which is applied in measuring devices, material thermal analysis, and analyzing materials, etc. It can solve the problems of time-consuming and labor-intensive measurement process, large error in experimental results, and low work efficiency, and achieve rapid heating and cooling , reduce error and improve accuracy
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Embodiment 1
[0078] This embodiment provides a porous position device for measuring the cooling and heating cycle of a phase change material and a measuring method thereof, 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 stage 1 has a cubic structure, and five holes are opened at the top as the sample chamber 4. The sample stage 1 includes an electric heater 5, a refrigerant 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 refrigerant pipeline 6 includes 6 serpentine tubes arranged in an array, the electric heater 5 and the electric heating tubes are arranged in an array. The refrigerant pipelines 6 are arranged crosswise inside the sample...
Embodiment 2
[0093] This embodiment provides a porous position device for measuring the cooling and heating cycle of a phase change material and a method for measuring the same. The structure of the device is the same as that of the device in Embodiment 1. The only difference is that the number of sample chambers 4 is 6 and the electric The heater 5 includes 14 electric heating tubes arranged in an array, and the refrigerant line 6 includes 8 serpentine tubes arranged in an array.
[0094] The measurement method of the device was the same as in Example 1.
Embodiment 3
[0096] The device in Example 1 is used 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 temperature limits of the two temperature sensors in the sample stage 1 to be 40°C and 10°C. Take 30 g of the sample and put it into a test tube and put it into the sample chamber 4, put a temperature probe into the sample and connect the recording output device. Click the start button on the touch screen 22 and the measurement output system 23, and the device runs automatically. When the required number of cycles is reached, the device is stopped, the test tube sample is taken out, and the "time-temperature" curve and data are derived.
[0098] In this example, it takes about 5 minutes to complete one ...
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