EXPERIMENTAL RESULTS OF AN AIR-TO-WATER HEAT PUMP WITH A VARIABLE SPEED COMPRESSOR
This paper presents results of a few months monitoring of an air-to-water residential heat pump used for space heating in a single-family house. The refrigerant used is R410A. The heat pump is equipped with a variable speed compressor. The scope of this project is to show how the COP of the heat pump is influenced by the variable-speed. When low variable speed is used, the phase change temperatures are close to the source and sink temperatures leading to an improvement of the COP. The thermal heat may be adapted to the thermal demand, avoiding the short-cycle working.