Tuesday, August 22nd, 2017

World geothermal power production status: Energy, environmental and economic study of high enthalpy technologies

Publication year: 2011brbSource:/b Energy, In Press, Corrected Proof, Available online 18 July 2011brCésar R., Chamorro , María E., Mondéjar , Roberto, Ramos , José J., Segovia , María C., Martín , …brThe current world status of geothermal electricity production, including installed capacities, number of units and energy produced by exploitation technology, is presented in this paper. Four geothermal model plants based on different modes of high enthalpy technologies are analyzed from energy, environmental and economic points of view for specific reservoir characteristics. Once process parameters are optimized for the best plant operation, a cost and financial analysis is performed within a given economic frame. This analysis shows that Dry Steam power plants are the most efficient. Flash steam power plants increase their exergy efficiency with increasing reservoir temperature. Double Flash technology…br Highlights: ► Four high enthalpy geothermal power model plants are defined and analyzed. ► Double flash technology raises energy produced respect Single Flash between 17 and 25%. ► An additional third flash process increases power production in 10%. ► Double flash technology improves economic parameters, but Triple Flash do not necessary improve them any more.


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