Heat storage phase change heat exchanger and method for promoting crystallization of sugar alcohol phase change material and reducing degree of supercooling

A technology of phase-change heat exchanger and phase-change material, which is applied in heat storage phase-change heat exchangers, promotes the crystallization of sugar alcohol phase change materials and reduces the degree of subcooling, and can solve problems such as difficulty in sugar alcohol crystallization

Active Publication Date: 2021-05-18
ZHEJIANG UNIV
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  • Claims
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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...

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  • Heat storage phase change heat exchanger and method for promoting crystallization of sugar alcohol phase change material and reducing degree of supercooling

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited thereto, and any technical concepts defined in the claims of the present invention and other simple transformations based on them are within the protection scope of the present invention.

[0022] Such as figure 1 As shown, the thermal storage phase change heat exchanger that can promote the crystallization of sugar alcohol phase change materials and reduce the degree of subcooling includes a heat exchanger body 1, and the outer shell of the heat exchanger body is composed of a metal shell, heat preservation layer and an insulating plastic cavity; the insulating plastic cavity is filled with sugar alcohol phase change heat storage material 2, and the insulating plastic cavity is also provided with an annular coil 3 as a working medium flow channel, and the annular coil...

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Abstract

The invention relates to a heat storage phase change heat exchanger and a method for promoting crystallization of a sugar alcohol phase change material and reducing the degree of supercooling. A shell of the heat exchanger is composed of a metal shell body, a heat preservation layer and an insulation plastic cavity from outside to inside. A heat exchanger body in the insulating plastic cavity is filled with a sugar alcohol phase change heat storage material mixed with stearate, and an annular coil pipe which serves as a working medium runner and is insulated from the shell is further arranged in the heat exchanger body in the insulating plastic cavity. The areas, located in the liquid-phase sugar alcohol phase change heat storage material, of two ends of the heat exchanger body are respectively provided with an electrode, and the upper electrode and the lower electrode are respectively connected with an external impact-resistant alternating power supply. When the heat exchanger is electrified to release heat, disturbance of various sugar alcohol phase change materials can be promoted, the crystallization process of the sugar alcohol phase change materials is further promoted, and the degree of supercooling in the crystallization process can be obviously reduced.

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 crystallization of sugar-alcohol phase-change materials and reducing 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 steam turbines and organic Rankine cycle power generation technologies are usually used for recycling. In contrast, the utilization rate of low-temperature waste heat resources below 200°C is lower. Using solar 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. Medium and low temperature heat energy such as industrial waste heat can be recovered and s...

Claims

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Application Information

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IPC IPC(8): F28D20/02
CPCF28D20/02Y02E60/14
Inventor 范利武石洪旖杨生罗佳豪张良俞自涛
Owner ZHEJIANG UNIV
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