Exergy Analysis of Heat Pumps.
Exergy Analysis of Heat Pumps.
(1722 K)
Tsaros, T. L.; Gaggioli, R. A.; Domanski, P. A.
NT-37-17-3;
ASHRAE (American Society of Heating, Refrigeration and
Air-Conditioning Engineers) Transactions, Vol. 93, No.
Part 2, 1781-1797, 1987.
Keywords:
heat pumps; computer programs; equations; computer
models; heat transfer; refirgerants; valves
Abstract:
The HPSIM computer program for modeling heat pumps
(Domanski and Didion 1983) has been augmented to include
exergy analysis. Exergy transports between the
components, to the loads, and to the environment are
evaluated. The exergy consumptions in each component are
also presented for the operation of a nominal 3.5 ton
residential air-to-air heat pump, in both the cooling
and heating modes, at four loads. Among the
conclusions drawn for this particular heat pump, it is
predicted that overall economy would be improved by
increasing the heat transfer surface of the indoor coil,
say at the expense of outdoor coil surface.
