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Refrigeration cycle and compressor performance for various low GWP refrigerants

Number: pap.1335

Author(s) : ONG J. G. E., OOI K. T.

Summary

The recent meetings of the global leaders in COP21 have gathered global consensus to fight the global warming. One of the important approaches in aiding toward fighting global warming is to use environmental friendly refrigerants. Recently a few new low GWP refrigerants have been introduced. In this paper, we will discuss the energy efficiencies of some new low GWP refrigerants as compared to the existing ones. Cycle performance calculations assuming an ideal vapor compression cycle from a pressure-enthalpy diagram and those from a comprehensive compressor mathematical model will be shown and compared. Refrigerants which are considered are R32, R134A, R404A, R407C, R1234ZE and R1234YF, and the results quoted will be normalized using data from R410A, which is currently a widely used refrigerant. The results shows that, when compared to the predictions from the compressor mathematical model, the results from the P-h diagram using the ideal cycle may overestimate the COP by up to 2 times, and this is caused by the up-to 50% of underestimation on the compressor work input.

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Pages: 8 p.

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Details

  • Original title: Refrigeration cycle and compressor performance for various low GWP refrigerants
  • Record ID : 30019553
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Publication date: 2016/07/11

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