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Appl. Sci. 2017, 7(3), 229; doi:10.3390/app7030229

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

1
TKey Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2
The College of Materials Science and Opto-electronic Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Academic Editor: Artur Jaworski
Received: 4 January 2017 / Revised: 8 February 2017 / Accepted: 23 February 2017 / Published: 28 February 2017
(This article belongs to the Special Issue Heat Transfer Processes in Oscillatory Flow Conditions)
View Full-Text   |   Download PDF [3041 KB, uploaded 28 February 2017]   |  

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. View Full-Text
Keywords: heat exchanger; pulse tube refrigerator; shell-tube types heat exchanger; pulse tube refrigerator; shell-tube types
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, W.; Hu, J.; Xu, J.; Zhang, L.; Luo, E. Influence of the Water-Cooled Heat Exchanger on the Performance of a Pulse Tube Refrigerator. Appl. Sci. 2017, 7, 229.

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