Paper Title:
Study on Expander-Auxiliary Compressor Unit Used in Refrigeration System
  Abstract

The throttling valve used in the refrigeration system always causes energy loss. In this paper, an energy recovery device in the refrigeration system which was composed of an expander-auxiliary compressor unit to replace the throttling valve was investigated. On the basis of thermodynamic analysis, two typical arrangements which the auxiliary compressor was connected to the main compressor of the refrigeration system were compared and the system performance parameters were discussed. A prototype of an expander-auxiliary unit was manufactured to observe the expander performance using R410A as refrigerant. The results showed the reliability of the unit working in the two-phase flow condition with the rotation speed up to 21020 rpm. And the maximum increases in the cooling capacity by 3.9% and COP by 3.2% could be obtained under the testing condition.

  Info
Periodical
Advanced Materials Research (Volumes 354-355)
Chapter
Chapter 5: HVAC, Air Conditioning and Refrigeration
Edited by
Hao Zhang, Yang Fu and Zhong Tang
Pages
811-818
DOI
10.4028/www.scientific.net/AMR.354-355.811
Citation
T. He, Z. Y. Wang, Y. Q. Xue, "Study on Expander-Auxiliary Compressor Unit Used in Refrigeration System", Advanced Materials Research, Vols. 354-355, pp. 811-818, 2012
Online since
October 2011
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Price
$32.00
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