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Research Papers

Thermodynamic Analysis of Wave Rotor Refrigerators

[+] Author and Article Information
Dai Yuqiang

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinadaiyuqiang@dlut.edu.cn

Zou Jiupeng

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinazoujiupeng@sohu.com

Zhu Che

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinazc3614@126.com

Liu Peiqi

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinalpq21cn@yahoo.com.cn

Zhao Jiaquan

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinazjqxxj@163.com

Zhang Liming

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinazlmdl78@sina.com

Hu Dapeng1

School of Chemical Machinery Engineering, Dalian University of Technology, Dalian 116012, P.R. Chinahudp@dlut.edu.cn

1

Corresponding author.

J. Thermal Sci. Eng. Appl 2(2), 021011 (Nov 08, 2010) (6 pages) doi:10.1115/1.4002756 History: Received May 21, 2010; Revised September 28, 2010; Published November 08, 2010; Online November 08, 2010

As a novel generation of rotary thermal separators, a wave rotor refrigerator (WRR) is an unsteady flow device used for refrigeration in whose passages pressured streams directly contact and exchange the energy due to the movement of pressure waves. In this work, the working procedure and wave diagram of WRR are investigated thoroughly. Based on this, a novel WRR thermodynamic analysis model has been established and validated by experiments. This performance assessment model shows the main contributing factors of expansion and compression processes. A particular analysis of WRR refrigeration system has revealed that expansion efficiency can be adversely affected by excessive high compression efficiency, which means that particular emphasis should be laid on wave rotors for supercharging or refrigeration.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Schematic diagram of four-port wave rotor refrigerator

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Figure 2

Wave diagram and refrigeration cycle of a reversible flow WRR (RFWRR)

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Figure 3

(a) p-h diagram and (b) T-s diagram of RFWRR

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Figure 4

Experimental results of compression ratio versus expansion ratio for RFWRR

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Figure 5

Thermodynamic analysis results for WRR at ηe=0.7 and ηc=0.25

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Figure 6

Peak temperature (TTH) and cooler duty (wc) for WRR at ηe=0.7 with different ηc

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Figure 7

Experimental results of εc and wex to εex at different εe with HP size of 15×16

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Figure 8

Refrigeration duty and exchanging work at ηc=0.3 with different ηe

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