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Information × Registration Number 0224U001665, 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 Head Morozov Yurii P., Доктор технічних наук Registration Date 26-01-2024 Organization Institute of Renewable energy of the National Academy of Sciences of Ukraine popup.description2 A method of two-stage operation of geothermal energy source extraction systems for electricity production has been developed. The first stage involves the injection of geothermal heat carrier into the upper permeable horizon, at the second stage it is operated in the mode of a geothermal circulation system. This method makes it possible to significantly reduce the energy costs for the operation of GeoTES and improve its technical and economic indicators. Aquifers have been determined for the territory of Ukraine, which are promising for pumping natural coolant at the first stage of operation. According to the proposed technology, the technical and economic indicators of the Geothermal Power Plant with a capacity of 2.3 MW were calculated. Using the example of the deposit with abnormally high reservoir pressure in Mostytsk (Transcarpathian region), it was established that lowering the reservoir pressure using a Pelton bucket turbine reduces the useful electric power of GeoTES by 11%, while the cost of capital costs is reduced by 4-5 times compared to traditional GeoTES. The use of methane extracted from geothermal water with the use of a cogeneration gas-piston unit additionally allows obtaining 690 kW of electric power (under the condition of a concentration of 1 nm3/m3). With a higher concentration of methane, the additional power increases proportionally. The obtained results can be used in carrying out technical and economic justifications for construction projects of Geothermal Power Plant with excess formation pressure. The developed mathematical model and the method of finite differences (Runge-Kutta-Merson) obtained a solution to the problem of heat exchange of a liquid during its movement in a geothermal well, which allows to obtain the calculation of the coolant at the exit from the well under different parameters of the operation of the well. Product Description popup.authors Afanasev Ivan Petrovych Barylo Anastasia A Bacherikov Oleksandr V Dubovskyi Serhii V Zhokhin Anatolij S. Zurian Oleksii Volodymyrovich Lysak Oleh V Lobanova Ines V. Lobunets Yurii M. Morozov Yuriy P Oliinichenko Valerii Heorhiiovych Stvruk Volodymyr Volodymyrovich Dzhamalutdin M. Chalaiev Сhetveryk Hennadiy O. popup.nrat_date 2024-01-26 Close