Heat Pump Unit in Heating and Air Recuperation of Premises

Energy-efficient methods of creating a microclimate of premises using renewable energy sources are considered. The feasibility of using heat recuperators of exhaust air is shown. Various types of recuperators are considered, their comparative characteristics are given. It has shown that the proposed calculations of their effectiveness give overestimated results, that does not correspond to reality. This work has developed a system for creating a microclimate of premises using an air heat pump of the Air–Water type. The use of such installations in areas with a cold climate is possible only with the use of the MOVEBIT de-icing system developed by us in the form of magneto-constrictive transducers installed on the surface of the heat exchanger of the evaporation unit. The microclimate system includes two evaporation circuits. The primary circuit works for heating using outdoor heat. The second evaporator connected in series to the first one is located in the exhaust air heat recovery circuit of the ventilation system. Heat exchanger of evaporation unit is made of aluminium and has certain shape, which is most favorable for de-icing. The tests showed an increase in the overall coefficient of performance (COP) of the complex heat pump installation by 20%.