Application of material with abnormal piezocaloric effect in solid-state refrigeration and/or heat storage

Abstract

The invention innovatively applies an abnormal piezocaloric effect material with negative thermal expansion properties in solid state refrigeration and / or heat storage application. An in-situ high-pressure differential scanning calorimeter test is carried out on a preferred material NH4SCN to verify that the abnormal piezocaloric effect material generates heat absorption phase change when pressureis applied and generates heat release phase change when the pressure is unloaded, the pressure can effectively control the heat absorption and release process of the phase change, heat can be effectively stored, and an experimental theoretical basis is provided for practical application of the abnormal piezocaloric effect material.

Description

technical field

[0001] The invention belongs to the application field of refrigeration and heat storage, and in particular relates to the application of a material with anomalous pressure heat effect in solid-state refrigeration and / or heat storage. Background technique

[0002] Traditional gas compression refrigeration technology is widely used in modern refrigeration equipment. Freon, as an early refrigerant, caused a serious hole in the ozone layer, while the current refrigerants, perfluorocarbons and hydrofluorocarbons, aggravate the greenhouse effect. Therefore, it is particularly important to seek alternative environmentally friendly refrigeration methods. The new solid-state refrigeration technology has attracted much attention as a potential development object. The refrigeration process has no greenhouse gas emissions and provides an effective way to solve the environmental damage caused by traditional refrigeration methods. The principle of solid-state refrigeratio...

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