Design of a large-capacity multi-piston pulse tube cryocooler

Hu, Jianxing; Luo, Ercang; Wu, Zhanghua; Gao, Yu; Dai, Wei

doi:10.1063/1.4706962

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…The pulse tube refrigerator was considered to be one of the best candidates, so the development and use of high-capacity pulse tube refrigerators boomed. At present, the cooling power of these refrigerators can exceed 1 kW at a temperature of 80 K, and a relative Carnot efficiency of 22% has been achieved [5][6][7][8][9]. Although this efficiency is quite high, some studies have indicated that the room temperature heat exchanger could be further improved [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Water-Cooled Heat Exchanger on the Performance of a Pulse Tube Refrigerator

Wang

et al. 2017

Applied Sciences

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Abstract:The water-cooled heat exchanger is one of the key components in a pulse tube refrigerator. Its heat exchange effectiveness directly influences the cooling performance of the refrigerator. However, effective heat exchange does not always result in a good performance, because excessively reinforced heat exchange can lead to additional flow loss. In this paper, seven different water-cooled heat exchangers were designed to explore the best configuration for a large-capacity pulse tube refrigerator. Results indicated that the heat exchanger invented by Hu always offered a better performance than that of finned and traditional shell-tube types. For a refrigerator with a working frequency of 50 Hz, the best hydraulic diameter is less than 1 mm.

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