E3S Web of Conf.
Volume 230, 2021IV International Scientific and Technical Conference “Gas Hydrate Technologies: Global Trends, Challenges and Horizons” (GHT 2020)
|Number of page(s)||10|
|Published online||18 January 2021|
Mining of methane from deposits subaquatic gas hydrates using OTEС
1 Central Ukrainian National Technical University, Department of Electrical Engineering Systems and Energy Management, 8 Universytetskyi Ave., 25006, Kropyvnytskyi, Ukraine
2 Odessa National Academy of Food Technologies, V.S. Martynovsky Institute of Refrigeration, Cryotechnologies and Ecoenergetics, 112 Kanatna St, 65039, Odesa, Ukraine
* Corresponding author: firstname.lastname@example.org
The article proposes to using Ocean Thermal Energy Conversion (OTEC) to increase the energy efficiency mining of methane from deposits subaquatic gas hydrates on the gas hydrate cycle (GHET), that will allow not to spend 10-15% of the extracted methane for power supply of a gas-producing complex (GPC). The circuit-technological solution GPC is described, according to which carbon dioxide is introduced into the gas hydrate layer to extract methane from gas hydrates. To improve the kinetics of the process of replacement of methane with carbon dioxide in gas hydrates, it is proposed do recirculation part of CO2. The scheme and cycle of gas-hydrate energy-technological installation GHET are given, which operates using OTEC and generates together with electricity for GPC, fresh water and cold. Based on the method proposed in this paper, a comparative thermodynamic analysis of installations using OTEC for Black Sea conditions was performed. by GHET and Anderson cycles and it is shown that the specific useful work obtained in the GHET cycle, approximately 3 times more, and energetic efficiency 1.5 times more.
© The Authors, published by EDP Sciences, 2021
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