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Indexed by:期刊论文

Date of Publication:2017-03-01

Journal:SHOCK WAVES

Included Journals:SCIE

Volume:27

Issue:2

Page Number:325-332

ISSN No.:0938-1287

Key Words:Wave rotor; Refrigeration; Thermodynamic analysis; Numerical simulation

Abstract:To overcome the bottleneck of traditional gas wave refrigeration, an improved wave rotor refrigerator (WRR) cycle has been proposed, in which the expansion work was recycled during the process of refrigeration. Thermodynamic analysis of the two cycles shows that the refrigeration efficiency of the improved WRR cycle has been greatly increased compared with the traditional WRR. The performance of an improved WRR was investigated by adjusting the major operational parameters, such as the rotational speed of the wave rotor, port size, and inflow overpressure. The experimental results show that pressure loss can be reduced by nearly 40 % in this improved refrigeration system. Meanwhile, a two-dimensional numerical simulation was performed to understand the wave interactions that take place inside the rotor channels.