THERMAL SCIENCE

International Scientific Journal

Lijuan He

,

Ningyu Sun

,

Yuze Han

,

Wenxuan Yang

,

Jiaohong Huang

EXPERIMENTAL INVESTIGATION ON THE EFFECT OF EQUIPMENT STRUCTURE ON REFRIGERATION PERFORMANCE OF COMBINED MAGNETIC REFRIGERATION SYSTEM

ABSTRACT
A combined magnetic refrigeration system that consists of external rotating magnetic field part of the rotary magnetic refrigerator and the flow path of the reciprocating magnetic refrigeration part was presented in this work. Experiments were carried out to investigate the influence of the structure for heat exchanger and active regenerator port on the refrigeration performance. With an operating frequency of 0.2 Hz and a magnetic field varying from 0 T to 1.3 T, a 22.2 K temperature span has been obtained when the heat exchanger with inner threaded coil tube was applied in the cold end. On the research of the hot end structure, the refrigeration temperature span of the plate heat exchanger is 22.7 K, the temperature of the cold end with fans is 6 K lower than that of the heat exchanger without fans. A 24.1 K temperature span of the combined magnetic refrigeration system can be obtained when the gradually varied port is used to the active magnetic regenerator.
KEYWORDS
combined magnetic refrigeration system, equipment structure, heat exchangers, temperature span, rare earth materials
PAPER SUBMITTED: 2022-01-22
PAPER REVISED: 2022-06-06
PAPER ACCEPTED: 2022-06-09
PUBLISHED ONLINE: 2022-07-09
DOI REFERENCE: https://doi.org/10.2298/TSCI220122105H
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 5, PAGES [4401 - 4411]
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Experimental investigation on the effect of equipment structure on refrigeration performance of combined magnetic refrigeration system

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence