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research-article

Improving refrigeration performance by using pressure exchange characteristic of wave rotor

[+] Author and Article Information
Dapeng Hu

School of Chemical Machinery, Dalian University of Technology, No.2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, PR China
hudp@dlut.edu.cn

Yang Yu

School of Chemical Machinery, Dalian University of Technology, No.2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, PR China
yuyang_oceany@163.com

Peiqi Liu

School of Chemical Machinery, Dalian University of Technology, No.2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, PR China
lpq21cn@dlut.edu.cn

Xiaolin Wu

School of Chemical Machinery, Dalian University of Technology, No.2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, PR China
arya_wu@yahoo.com

Yiming Zhao

School of Chemical Machinery, Dalian University of Technology, No.2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, PR China
545199342@qq.com

1Corresponding author.

ASME doi:10.1115/1.4041722 History: Received October 04, 2017; Revised October 05, 2018

Abstract

Wave rotor with pressure exchange function can be utilized to improve refrigeration performance. The objective of this paper is to verify the feasibility of the method by thermodynamic and experimental analysis. Firstly, a refrigeration process which contains wave rotor pressurization was established. Then, a thermodynamic model which reflects the refrigeration process was designed. The thermal performance was researched under various key parameters. Finally, based on the novel wave rotor refrigeration platform, the experimental work was carried out and the effects of main parameters of the device were systematically studied. The results showed that it was feasible to enhance the coefficient of performance (COP) by using pressure exchange characteristic of wave rotor. The COP could be improved substantially at relatively small expansion ratio. Under the design point, more than half of pressure energy could be restored. The performance curve of the novel equipment was also obtained. Enhancing the isentropic efficiency of expansion is the effective means to improve the COP and s of the system. The paper designed a way that contained a novel equipment to enhance the COP of wave rotor refrigeration.

Copyright (c) 2018 by ASME
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