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Research Papers

Mechanism Analysis of Weakening Reverse Compression Waves in Gas Wave Refrigerator

[+] Author and Article Information
Peiqi Liu, Kehan Wu, Sheng Liu, Wenhu Tan, Che Zhu, Dapeng Hu

Institute of Chemical Engineering,
Dalian University of Technology,
Dalian 116024, Liaoning, China

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received January 16, 2018; final manuscript received June 12, 2018; published online August 31, 2018. Assoc. Editor: Wei Li.

J. Thermal Sci. Eng. Appl 10(6), 061013 (Aug 31, 2018) (7 pages) Paper No: TSEA-18-1023; doi: 10.1115/1.4040895 History: Received January 16, 2018; Revised June 12, 2018

Pressure oscillating tubes are core components of the gas wave refrigerator. The reverse compression waves will limit refrigeration efficiency by reheat cooling gas. The promotion from traditional rotation gas wave refrigerator with single opened pressure oscillating tubes to the streamlined pressure exchange gas wave refrigerator with double opened pressure oscillating tubes is mainly in terms of this issue. However, through weakened, reverse compression waves are still inevitable. For further development, the concept of a wave attenuator has been proposed, installed at the high-temperature (HT) port. Numerical simulation has been utilized to analyze mechanism of wave attenuator and the practical effect has been proved by experiment research. The conclusions are as follows: due to structure of wave attenuator, the intensity of reverse compression waves has been weakened; the optimal structure of wave attenuator has been obtained; the refrigeration efficiency of the refrigerator has been significantly increased because of wave attenuator in HT port.

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Figures

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Fig. 1

The structure scheme of rotation gas wave refrigerator

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Fig. 2

The structure scheme of pressure exchange refrigerator

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Fig. 3

Wave system in the pressure exchange refrigerator

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Fig. 4

The structure of wave attenuator and HT port

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Fig. 5

The model of HT port: (a) without wave attenuator, (b) 0.2 times, (c) 0.4 times, and (d) 0.8 times

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Fig. 6

The 2D model of pressure exchange gas wave refrigerator

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Fig. 7

Test section and measuring points (unit: mm)

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Fig. 8

Static pressure time trace at P10 (experiment)

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Fig. 9

Static pressure time trace at P10 (simulation)

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Fig. 10

Local diagram of gas wave refrigerator

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Fig. 11

Pressure contour of HT port in the earlier exhaust

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Fig. 12

Wave state along with oscillating tube after passing HT port

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Fig. 13

Comparison of temperature in oscillating tubes: (a) without wave attenuator and (b) with wave attenuator

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Fig. 14

Isentropic efficiency of different structures

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Fig. 15

The flow chart of experiment system

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Fig. 16

Isentropic efficiency with and without wave attenuator

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