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Information × Registration Number 0225U001948, (0123U100984) , R & D reports Title To develop technical and technological methods of increasing the energy efficiency of geothermal installations based on the study of thermal and hydrodynamic processes of extraction systems and the use of geothermal resources popup.stage_title Дослідження процесів використання приповерхневих шарів Землі Head Morozov Yurii P., Доктор технічних наук Registration Date 12-02-2025 Organization Institute of Renewable energy of the National Academy of Sciences of Ukraine popup.description1 The purpose of the work is the development of methodological solutions based on research into the physical processes of the system of extraction of geothermal energy sources, which ensure its energy efficiency and ecological safety. Determination of the energy efficiency of heat accumulation in the underground permeable layers of the Earth popup.description2  Based on mathematical modeling of the process of temperature wave movement in unsaturated soils and aquifers, it is theoretically substantiated that the upper layers of the Earth below the freezing depth are an effective source of low-potential thermal energy for the construction of heating and energy supply systems using heat pumps. It is calculated that the depth of propagation of the heat wave is 0.94 m per day, which corresponds to half the temperature fluctuation period. It is analytically substantiated that the course of soil temperature depends to a greater extent on external factors: solar radiation, air temperature and humidity, snow cover, geographical coordinates of the area, nature of vegetation cover, relief, height above sea level. Internal factors, such as physical and thermophysical properties of soils, have a lesser influence. An analysis of the effectiveness of the use of gravity heat pipes for heat extraction from the upper layers of the Earth has been performed. Based on the calculations performed, it was proven that an ultra-long gravity heat pipe can transmit a heat flux of 4×107 W per 1 m2 of the cross-sectional area of the heat pipe over long distances with almost no losses. The energy potential of unsaturated soils and groundwater of the upper layers of the Earth in the territory of Ukraine was calculated, which is 15.7 million Gcal per year for petrothermal resources and 30.2 million Gcal per year for hydrothermal resources. Product Description popup.authors Barylo Anastasiia A. Bacherikov Oleksandr V. Dubovskyi Serhii V. Zhokhin Anatolii S. Zurian Oleksii V. Lysak Oleh V. Lobanova Inesa V. Morozov Yurii P. Oliinichenko Valerii H. Polishchuk Nataliia I. Sevriuk Volodymyr V. Chalaiev Dzhamalutdin M. popup.nrat_date 2025-02-12 Close