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Performance characteristics of a high temperature water‐to‐water heat pump
Author(s) -
Parise J. A. R.,
Cartwright W. G.
Publication year - 1988
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.4440120407
Subject(s) - refrigerant , condenser (optics) , gas compressor , heat pump , air source heat pumps , thermodynamics , evaporator , water chiller , heat sink , nuclear engineering , mechanics , environmental science , materials science , heat exchanger , engineering , physics , light source , optics
A simulation model is utilized to predict the performance of a high temperature water‐to‐water heat pump, running on Refrigerant 11, over a range of evaporator and condenser water temperature (10 to 40°C and 40 to 70°C) and compressor speeds (500 to 3000 r.p.m.). It is shown that heat pump power output can be effectively controlled by varying compressor speed. Effects of compressor speed, heat source and heat sink (end‐use) temperature on the heat pump efficiency are presented. Special attention is devoted to the values of predicted refrigerant temperature at the compressor discharge. These are compared with the thermal limit of the refrigerant. Modifications to the system, to reduce refrigerant maximum temperature, are also discussed.