A heat storage phase-change heat exchanger and a method for promoting the crystallization of sugar-alcohol phase-change materials and reducing the degree of subcooling

Abstract

The invention relates to a thermal storage phase change heat exchanger and a method for promoting crystallization of sugar alcohol phase change materials and reducing subcooling degree. The shell of the heat exchanger is composed of a metal shell, an insulating layer and an insulating plastic cavity from the outside to the inside; the heat exchanger body in the insulating plastic cavity is filled with a sugar-alcohol phase-change heat storage material mixed with stearate. The heat exchanger body in the insulating plastic cavity is also provided with an annular coil as a working medium flow channel and insulated from the shell. Both ends of the heat exchanger body are respectively provided with a One electrode, and the upper and lower electrodes are respectively connected to an external shock-resistant alternating power supply. When the invention is electrified and exothermic, it can promote the disturbance of various sugar alcohol phase change materials, further promote the crystallization process of the sugar alcohol phase change materials, and can obviously reduce the supercooling degree of the crystallization process.

Description

technical field [0001] The invention relates to the field of sugar alcohol phase change heat storage, and specifically discloses a heat storage phase change heat exchanger and a method for promoting the crystallization of sugar alcohol phase change materials and reducing the degree of supercooling. Background technique [0002] Recycling waste heat resources increases energy efficiency while reducing environmental impact. For medium-temperature waste heat resources with a temperature of 200-400 °C, low-grade thermal energy steam turbines and organic Rankine cycle power generation technology are usually used for recycling. In contrast, the utilization rate of low-temperature waste heat resources below 200 °C is lower. Using solar energy industrial waste heat as a heat source for winter heating can not only improve energy utilization efficiency, but also alleviate the increase in energy consumption caused by heating. The medium and low temperature heat energy such as industri...

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide a method for promoting the crystallization of sugar alcohol phase change materials and reducing the degree of supercooling, to a certain extent alleviate the problem of difficult crystallization of sugar alcohols, and promote the utilization of sugar alcohols in phase change heat exchangers

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