A system and method for rapidly and automatically measuring the cooling and heating cycles of phase change materials in a wide temperature range

Abstract

The invention provides a quick and automatic wide temperature range system of determining hot and cold cycles of a phase-change material and a determination method of the system. The system comprisesa sample detection chamber, a hot liquid tank, a cold liquid tank, a first temperature control system, a second temperature control system, a control system, a measurement output system, a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, wherein the hot liquid tank is connected with the first temperature control system; the cold liquid tank is connected with the second temperature control system; a sample to be detected in the sample detection chamber is connected with the measurement output system via the third temperature sensor; the second temperature sensor is arranged in the hot liquid tank; the fourth temperature sensor is arranged in the cold liquid tank; the first temperature sensor is arranged in the sample detection chamber; the first temperature sensor, the second temperature sensor and the fourth temperature sensor are connected with the control system. The system can automatically control temperature rise and drop according to an input procedure to allow the phase-change material to change phases repeatedly to accomplish a durability experiment, can record the temperature and the number of the cycles ofthe phase-change material in real time, and saves time and labor.

Description

technical field [0001] The invention belongs to the field of material testing equipment, and relates to a system for measuring the cold and heat cycle of a phase change material in a wide temperature region and a measuring method thereof, in particular to a system for rapidly and automatically measuring the cold and heat cycle of a phase change material in a wide temperature region and a measuring method thereof . Background technique [0002] Phase change materials use latent heat of phase change to store and release energy. During the phase change process, the phase change material stores and releases energy through endothermic and exothermic heat, so as to achieve the purpose of controlling the temperature of the surrounding environment. Due to its high energy storage density and approximately isothermal phase transition process, it has broad application prospects in the fields of building energy saving, solar energy, grid "peak shaving and valley filling", aerospace and...

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Problems solved by technology

[0005] Aiming at the problems of poor stability, large error in experimental results, time-consuming and labor-intensive measurement process and low work efficiency in the performance test of phase change materials in the prior art, the present invention provides a rapid and automatic measurement of cold and heat of phase change materials in a wide temperature range. Circulatory system and its measurement method

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