Study of Performance Changes in Centrifugal Compressors Working in Different Refrigerants

Yintao Wang () and Jin Yan
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Yintao Wang: Danfoss Turbocor Compressors, Tallahassee, FL 32310, USA
Jin Yan: Danfoss Turbocor Compressors, Tallahassee, FL 32310, USA

Energies, 2024, vol. 17, issue 11, 1-17

Abstract: Centrifugal compressors are commonly used in heating, ventilation, and air conditioning (HVAC) systems. The current generation of refrigerants in HVAC systems have very low ozone depletion potential, but most of them are still considered as containing high global warming potential (GWP) chemicals. Facing the regulatory pressure to eliminate the high-level GWP refrigerants, some of the existing HVAC systems will need to switch to low-GWP refrigerants. In this paper, we studied the performance changes in a refrigerant centrifugal compressor when switching from R134a to R1234ze(E) and R1234yf through a method that combined numerical simulation and an 1D meanline code. By combining these two methods, a reliable compressor performance change prediction was generated using limited results from the computational fluid dynamics (CFD) simulations. The results show that the property differences in the working fluid can significantly change the refrigerant compressor performance, including the compressor efficiency, pressure ratio, power consumption, working range and cooling capacity.

Keywords: centrifugal compressor; low-GWP refrigerant; simulation; efficiency; operating range; power consumption (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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