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An experimental evaluation of R11 as a heat pump working fluid in comparison with some other working fluids
Author(s) -
Ogbeide S. E.,
ElMeniawy S. A. K.,
Devotta S.,
Watson F. A.,
Holland F. A.
Publication year - 1983
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/er.4440070205
Subject(s) - working fluid , heat pump , thermodynamics , lubricant , thermal , range (aeronautics) , mechanical engineering , materials science , standard deviation , nuclear engineering , relative standard deviation , mechanics , engineering , environmental science , chemistry , mathematics , physics , chromatography , composite material , statistics , heat exchanger , detection limit
A water to water heat pump specially designed and instrumented for research has been used to determine the actual coefficients of performance of R11 for condensing temperatures in the range 70°C to 104°C. 101 experimental points were obtained and these lie on a smooth curve with a standard deviation of 6.32 per cent. The results are compared with data previously obtained for R12, R22, R12B1 and R114 on the same equipment. R11 with its relatively high critical temperature of 198°C is potentially an attractive working fluid provided that it can be operated in conjunction with a lubricant which does not facilitate thermal breakdown.