Heat recovery heat pump experimental study

Air conditioner are more and more used in people’s working and living space along with society’s development and people attach more importance to the improvement of indoor surrounding. Air conditioner is mostly used in summer to depress the room temperature in our country （if it is a heat-pump one, it is also used in winter for heating）. Currently, the heat from condensation is let out of the room without any utilizing when the air conditioner worked in summer, so this is a sort of waste of energy; on the other hand, people always need clean hot water in working or living space for different purpose. For long time we heat water by multifarious boiler which heats water with electricity or burning fuel as energy source. The water gets heated by consume high quality energy, so this mode of consuming energy is something inconsequential.This paper designed a new type of heat-recycle heat pump equipment, and on the base of experiments on the equipment, investigated （1） the status of the equipment working in summer, in which the heat from condensation is recycled to heat water, namely, the study of the application of heat-recycle heat pump equipment in summer; at the same time in order to accelerate the development of multifunctional heat pump, investigated （2） in various condition, the status of the equipment working to heat water and the means to elevate the water’s temperature, namely, the study of application of the equipment as water heater; at last, investigated （3） the status of equipment heating room in cold climates with shallow solar pond as heating source, namely, the study of application of equipment for heating in winter. As a result, all studies above got good outcome.In the study of the application of heat-recycle heat pump equipment in summer, when using air as heating source, the performance coefficient of refrigeration（COP_r） came up to 3.04, while the performance coefficient of heating（COP_h） came up to 4, so the overall performance coefficient(COP_ov)was 7.04. When using water as heating source, COP_r came up to 3.10, the COP_h came up to 3.94, the COP_OV was 7.04 too, the effect of saving energy