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Influence of suction conditions and refrigerant fluid on scroll compressor mass flow rate and extrapolation strategies.

Number: 1500

Author(s) : MARCHANTE-AVELLANEDA J., OSSORIO R., NAVARRO-PERIS E., SHRESTHA S. S.

Summary

This paper explores how suction conditions and refrigerant selection affect the mass flow rate of fixed-speed scroll compressors. The current compressor characterization standard only provides guidelines for correcting compressor performance with suction conditions, relying on the 1981 Dabiri correlation. This study seeks to analyze if the correction reported in the standard is adequate and also to supply an adequate correction when it is intended to extrapolate to another refrigerant. In order to conduct the following analysis, the calorimeter tests included in the AHRI-11, AHRI-21 and AHRI-33 reports have been used. These reports were published some years ago by the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) within the Low-GWP Alternative Refrigerants Evaluation program. They include the analysis of two Copeland scroll compressors of different sizes (20 and 51 cm3), tested under several suction conditions (SH = 11K, SH = 22K, Ti = 18ºC) and by using different refrigerant fluids (R134a, R32, R410A, R404A, …). Prior research has examined the response surfaces for the energy consumption and mass flow rate variables for these scroll compressors. This study intends to extend the analysis by first determining the optimal strategy to extrapolate the mass flow rate prediction — correlated at specific suction conditions — to other suction conditions. Furthermore, it aims to identify the most suitable approach for extrapolating when changing the refrigerant fluid.

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  • Original title: Influence of suction conditions and refrigerant fluid on scroll compressor mass flow rate and extrapolation strategies.
  • Record ID : 30033625
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 27th International Compressor Engineering Conference at Purdue.
  • Publication date: 2024/07/18

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