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Modelling of reciprocating and scroll compressors.

Author(s) : DUPREZ M. E., DUMONT E., FRERE M.

Type of article: Article, IJR article

Summary

This paper presents simple and thermodynamically realistic models of two types of compressors widely used in domestic heat pumps (reciprocating and scroll compressors). These models calculate the mass flow rate of refrigerant and the power consumption from the knowledge of operating conditions and parameters. Some of these parameters may be found in the technical datasheets of compressors whereas others are determined in such a way that the calculated mass flow rate and electrical power match those given in these datasheets. The two models have been tested on five reciprocating compressors and five scroll compressors. This study has been limited to compressors with a maximum electrical power of 10 kW and for the following operating conditions: evaporating temperatures ranging from -20 to 15°C and condensing temperatures ranging from 15 to 60°C. The average discrepancies on mass flow rate and power for reciprocating compressors are 1.10 and 1.69% (for different refrigerants: R-134a, R-404A, R-22, R-12 and R-407C). For scroll compressors, the average discrepancies on mass flow rate and power are 2.42 and 1.04% (for different refrigerants: R-134a, R-404A, R-407C and R-22).

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Pages: 873-886

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Details

  • Original title: Modelling of reciprocating and scroll compressors.
  • Record ID : 2007-1515
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 5
  • Publication date: 2007/08

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