Emissions of contaminants and CO2 are becoming a relevant issue for the development of geothermal energy projects. Organic Rankine (ORC) Cycles present in this light particular appeal in the light of the possibility of total reinjection of the geothermal fluid resource including Non-Condensable Gases (NCGs). The Castelnuovo (IT) case study conditions are considered a saturated vapour resource at 10 bar pressure. The performance of the ORC cycle for power generation from this geothermal resource is evaluated through mass and energy balances, stepping up to exergy, Life Cycle Analysis (LCA) and Exergo-Environmental analyses (EEvA). The applied methodology allows to identify the most critical components of the system and to evaluate the environmental indicators of the system.
Exergy and Exergo-Environmental analysis of an ORC for a geothermal application / Fiaschi D.; Manfrida G.; Mendecka B.; Shamoushaki M.; Talluri L.. - In: E3S WEB OF CONFERENCES. - ISSN 2267-1242. - ELETTRONICO. - 238:(2021), pp. 0-0. (Intervento presentato al convegno 2020 Applied Energy Symposium (ICAE), 100RES 2020 tenutosi a ita nel 2020) [10.1051/e3sconf/202123801011].
Exergy and Exergo-Environmental analysis of an ORC for a geothermal application
Fiaschi D.;Manfrida G.;Mendecka B.;Shamoushaki M.;Talluri L.
2021
Abstract
Emissions of contaminants and CO2 are becoming a relevant issue for the development of geothermal energy projects. Organic Rankine (ORC) Cycles present in this light particular appeal in the light of the possibility of total reinjection of the geothermal fluid resource including Non-Condensable Gases (NCGs). The Castelnuovo (IT) case study conditions are considered a saturated vapour resource at 10 bar pressure. The performance of the ORC cycle for power generation from this geothermal resource is evaluated through mass and energy balances, stepping up to exergy, Life Cycle Analysis (LCA) and Exergo-Environmental analyses (EEvA). The applied methodology allows to identify the most critical components of the system and to evaluate the environmental indicators of the system.
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