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Performance of a scroll compressor with R134a at medium temperature heat pump conditions
Author(s) -
Carrington C. G.,
Bannister P.,
Liu Q.
Publication year - 1996
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/(sici)1099-114x(199608)20:8<733::aid-er187>3.0.co;2-c
Subject(s) - isentropic process , scroll compressor , gas compressor , heat pump , thermodynamics , volumetric efficiency , scroll , suction , materials science , refrigerant , coefficient of performance , mechanics , reciprocating compressor , heat exchanger , mechanical engineering , engineering , physics
The isentropic and volumetric efficiency of a scroll hermetic compressor is measured using R134a under medium temperature heat pump conditions. The evaporating temperature ranges from 3 to 36°C and the condensing temperature from 34 to 78°C. The efficiency parameters are fitted to functions of the suction and discharge pressures. At the same port pressures, there are only small differences between the isentropic and volumetric efficiency parameters for R134a and those for R22, the latter determined from the manufacturer's data. The efficiency parameters for R134a are used to compare the performance of the compressor with R12, R134a and R152a in a medium temperature heat pump cycle. The COP and heating capacity exhibit trends similar to those in previous experimental data for a reciprocating compressor.