Thermoacoustic driven magnetic refrigeration system

Abstract

The invention provides a thermoacoustic driven magnetic refrigeration system. A first thermoacoustic engine and a second thermoacoustic engine that are oppositely arranged communicate with each otherthrough two parallel first U-shaped tubes and second U-shaped tubes; a thermomagnetic conversion subsystem comprises a water cooler, a thermomagnetic material module and a hot end heat exchanger whichare arranged along the first U-shaped tubes; a magnetocaloric conversion subsystem comprises a water cooler, a magnetocaloric material module and a cold end heat exchanger which are arranged along the second U-shaped tubes, and the thermomagnetic material module is connected with the magnetocaloric material module by a magnetic circuit. The above thermoacoustic drive magnetic refrigeration systemuses a thermoacoustic engine to drive the heat exchange between a liquid heat exchange medium and a thermomagnetic material, and the heat exchange between the liquid heat exchange medium and a magnetocaloric material, the periodic "on" and "off" of a magnetic circuit is realized by the phase change of the thermomagnetic material around a Curie temperature, so that the magnetocaloric material is periodically magnetized and demagnetized, and then magnetic refrigeration is realized. The above thermoacoustic drive magnetic refrigeration system has no mechanical moving parts at all, a heat exchange structure is simple, the technical reliability is high, and thermally driven refrigeration is realized.

Description

Technical field [0001] The invention relates to the technical field of magnetic refrigeration, in particular to a thermoacoustic driven magnetic refrigeration system. Background technique [0002] A thermoacoustic engine is a heat-mechanical energy conversion device with no moving parts. It is generally a pipeline structure. When a certain section of the working fluid in the pipeline has an obvious axial temperature gradient, self-excited oscillation will occur in the pipeline. Constantly heating the hot end of the pipe and the cold end of the cooling pipe can maintain this self-excited oscillation and realize the continuous conversion of thermal energy to mechanical energy. [0003] The thermomagnetic effect means that when the thermomagnetic material is heated above the Curie temperature, it changes from a ferromagnetic state to a paramagnetic state, and the permeability is greatly reduced. When the thermomagnetic material is cooled back below the Curie temperature, it will Tran...

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Problems solved by technology

[0008] In view of this, it is necessary to provide a thermoacoustic driven magnetic refrigeration system without mechanical moving parts, which effectively solves the problems of low reliability and complex heat transfer structure in the prior art

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