Аңдатпа
The article discusses the issues of effective use of heat pumps in the northern region of Kazakhstan, Kostanay region. The purpose of this article is to study the physical and technological characteristics of various types of refrigerants for the effective use of heat pumps in the climatic conditions of Northern Kazakhstan, using the «Water – Water» coolant system, taking into account the external and internal parameters of the system’s interaction. An analysis of the estimated climatic and soil characteristics of the Kostanay region was carried out, and priority methods for designing heat pump systems were determined. The results of a computational experiment performed on the basis of a model and a developed algorithm for the conjugate calculation of the Water-Water heat pump system are presented, taking into account external and internal factors affecting the system. As a result of the research, it turned out that the efficiency of a heat pump when installed in the Kostanay region depends on internal (thermodynamic parameters of the installation system and refrigerant characteristics) and external (temperature characteristics of the external environment). and groundwater, operating conditions of the installation, depth of water resources, etc.) factors. The thermodynamic cycle of a heat pump has been determined depending on the refrigerant pressure P and refrigerant enthalpy h, heat conversion coefficients and their changes when the pump reaches its nominal operating mode. It has been proven that the best thermodynamic characteristics for the design and climatic conditions of the Kostanay region with internal influencing factors is the use of R513A refrigerant. The obtained research data can be used as the basis for calculating a joint analysis of the heat balance of rooms with heating equipment and technologies based on the use of heat pumps of the «Water-Water» system for the Kostanay region. Keywords: heat pump, climate, ecology, renewable energy sources, heating of buildings. heat supply, enthalpy, thermodynamics.