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Performance of a scroll compressor working with drop-in refrigerant replacements to R134a.

Number: 1491

Author(s) : CONTE R., AZZOLIN M., BERNARDINELLO S., DEL COL D.

Summary

Most of the countries around the world are adopting regulations and actions to reduce the use of hydrofluorocarbon (HFC) refrigerants with high Global Warming Potential (GWP). Among the HFCs, R134a, which has a GWP100years equal to 1530, is recognized by the IPCC as a major contributor and its atmospheric abundance increased by 71 % from 2011 to 2019. This work presents an experimental study on the performance of a new scroll compressor operating with six low-GWP refrigerants as drop-in alternatives to R134a. The refrigerants used are: R1234ze(E), R152a, R516A, R515B, R450A and R513A. The test system is a water-to-water chiller working with two large scroll compressors (swept volume for each compressor equal to 222.5 m3 h-1) and two brazed plate heat exchangers as the condenser and the evaporator. The experimental tests were conducted by fixing the inlet/outlet water temperatures in the heat exchangers when producing cold water at 7°C and 18°C. The data allow to evaluate and assess the compressor performance in terms of volumetric efficiency and global isentropic efficiency. Numerical correlations of Pierre (1982) and Navarro et al. (2013) to estimate the compressor efficiencies have been compared against the experimental data and new coefficients have been determined for those correlations.

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  • Original title: Performance of a scroll compressor working with drop-in refrigerant replacements to R134a.
  • Record ID : 30033623
  • Languages: English
  • Subject: Regulation
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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