%0 Journal Article %T RESEARCH OF GEOTHERMAL HEAT PUMP UNIT EFFICIENCY IN CLIMATIC CONDITIONS OF RUSSIAN REGIONS %A Trubaev, P.A. %A Koshlich, Y.A. %A Belousov, A.V. %A Buhanov, D.G. %A Grebenik, A.G. %A Prasol, D.A. %K heat pump, heating, temperature schedule, quality control, coefficient of transformation, COP %J Bulletin of Belgorod State Technological University named after. V. G. Shukhov %D 2025 %N 10 %P 18 %I Belgorod State Technological University named after V.G. Shukhov