HEATING AND COOLING SUPPLY OF PUBLIC BUILDINGS BASED ON RENEWABLE ENERGY SOURCES AND HEAT PUMPS

Abstract

Abstract. Introduction. Heat pumps are among the most efficient devices used for heating and cooling buildings. However, the main problem with heat pumps is the significant deviation of the external ambient temperature, during both summer and winter, from the optimal temperature required for the effective operation of the heat pump. Additionally, due to the high number of consumers during this period, the voltage in electrical networks drops, necessitating the use of expensive rectifiers.

Methods and materials. To address the aforementioned issues, groundwater can be utilized, as its temperature is close to the optimal conditions for heat pumps, positively affecting their efficiency. Furthermore, photovoltaic and wind power stations can be installed to maintain voltage at nominal levels and generate energy.

Results. Based on preliminary calculations, it can be stated that using this method increases the energy efficiency of heat pumps by 30%. Moreover, since several renewable energy sources are employed in the proposed scheme, it also enhances the efficiency and reliability of the specified system. It is also worth noting the short payback period, making it a promising approach.

Conclusions. By applying the methods outlined below, it is possible to reduce the load on energy systems, increase the efficiency of heat pumps, and address water supply issues in certain areas.