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The analysis of the geothermal energy capacity for power generation in Serbia

2013; Vinča Institute of Nuclear Sciences; Volume: 17; Issue: 4 Linguagem: Inglês

10.2298/tsci120215033s

2334-7163

J. Stojković, Goran Marinković, Petar Papic, Mihailo Milivojevic, Maja Todorović, M. Ćuk,

Geochemistry and Geologic Mapping

An estimate of deep groundwater temperature is necessary for the research and utilization of this geothermal resource. Geothermometers are based on the temperature relation of some chemical reactions or the solubility of some minerals. Researchers mostly use silicon-based (quartz, chalcedony, amorphous silica) and cation-based (Na-K, Na-K-Ca, Na-K-Mg, and so forth) geothermometers. Temperatures of some prospectively abundant geothermal water resources in Serbia are estimated using the silicon-based geothermometers. In the absence of hot water resources, temperature of deep thermal groundwater has to be estimated and considered for power generation with the Kalina or the Rankine binary cycle. Best thermal waters (temperatures from 130? to 160?C) for the purpose are located in the spa of Vrnjacka Banja, followed by Kursumlijska, Sijarinska and Josanicka spas and Bogatic of Macva. Pumped at the present rate of 200 l/s, the mentioned sources may generate 70 [MWt] , of which some 30 [MWt] the Vranjska Banja alone. Total power (for the five tested resources) is estimated at about 2200 [TJ] per year.