Heat regenerator based on phase change materials and stirling cycle system

A technology of phase change materials and regenerators, which is applied in the field of Stirling cycle systems, can solve the problems of less application and no filling of regenerators, and achieve the goal of increasing heat storage, reducing thermal fatigue damage, and reducing volume Effect
CN110273779APending Publication Date: 2019-09-24ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2019-09-24

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Abstract

The invention discloses a heat regenerator based on phase change materials. The heat regenerator comprises a shell and a packing portion filling in a chamber formed by the shell, one end of the chamber is a hot end for allowing a high-temperature gas working medium to flow therein, the other end of the chamber is a cold end for allowing a low-temperature gas working medium to flow therein, the high-temperature gas working medium and the low-temperature gas working medium alternately flow through the chamber of the heat regenerator through the hot end and the cold end of the chamber correspondingly, wherein the packing portion comprises a plurality of phase change components composed of the phase change materials with different melting points, and the phase change components at least comprise the first melting point phase change component and the second melting point phase change component, and the first melting point phase change component close to the hot end has a higher melting point relative to the second melting point phase change component close to the cold end. According to the provided heat regenerator using the phase change materials as the packing, the heat storage density of the heat regenerator can be improved, the heat regeneration amount can be increased, the size of the heat regenerator also can be reduced, the dead volume of a system can be reduced, and then the efficiency of the whole machine can be improved.
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Description

technical field

[0001] The present invention relates to a regenerator based on a phase change material, and also relates to a Stirling cycle system using the regenerator. Background technique

[0002] Regenerators are the core heat transfer components of Stirling engines, refrigerators, electronic equipment coolers and many other equipment. These devices use gas as the working fluid and work in a closed heat recovery cycle. When the working fluid absorbs heat and expands, the high-temperature airflow flows from the hot end to the cold end, and the regenerator stores a part of the gas heat in the packing; when the working fluid releases heat and compresses, the low-temperature airflow returns from the cold end to the hot end, and the regenerator will store The heat is released to the low-temperature airflow to complete the heat recovery. The regenerator is an energy-saving device that can improve the efficiency of the whole equipment, greatly reducing the workload of the he...

Claims

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