Abstract
This paper deals with simulation studies of a heat pump which has solar collectors as the evaporator. The influence of solar radiation intensity, wind velocity and the ambient air temperature on the COP of a heat pump using flat-plate collectors (l.9m^2),a finned tube collector (1.1m^2) or combination of these two kinds of collectors arranged in parallel was investigated. The rated capacity of the compressor was 250W. The influence of solar radiation was large for the heat pump with the flat-plate collectors. When there was little wind velocity, the influence of solar radiation on COP of the heat pump with the convection type collector was fairly large. When there was much wind velocity, COP did not change even if. the convective type collector area was reduced to the half. The COP of the heat pump with the combined collectors was highest in most of the cases.
