Synchronization Of Heat Pump Operation With Positive Daily Gains Of Ambient Air Temperature

Goal of this paper is to present concept of air source heat pump control dependently on the predictable daily gains of ambient air temperature in order to achieve more efficient operation of the pump and savings of electric energy consumed by the pump. Therefore variations of ambient air were measured and recorded in the site of our university campus during the space heating season, and regularities of the variations were analysed. It was determined that differences of air temperature measured in daytime and night, as the rule, are positive and usually can make up from 2-3 degrees C to 15-16 degrees C. This fact allows presuming that that it would be useful to change currently practiced concept of heat pump control. The pump control system should be set on the positive daily gains of air temperature to produce more heat energy for the less electric energy consumed. Heat energy produced by the pump should be stored in hot water tank. System of heating premises have to operate independently from the system mentioned above. Efficiency of the proposed heat pump control system can be significantly enhanced by means of solar collectors for air heating specially installed in the building for this purpose. Theoretical concept given in this paper is intended to check experimentally. (c) 2018