The paper presents the possibility of using geothermal energy for electricity production at average temperatures. The authors considered two options for their study, namely binary cycles (organic Rankine and Kalina) and the thermoelectric generators. After a comparative study for the proposed solution, was chosen Kalina cycle and was proposed a solution for a geothermal power plant. The advantages are based on the fact in Oradea exists an important geothermal water reservoir at average temperatures, that can be used to successfully implement the solution to obtain electricity presented by the authors. This solution is among the newest in the field of geothermal waters at average temperatures.Index Terms-geothermal energy, power plant, binary cycle, electricity

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In this paper presents ternary diagrams for geothermal waters from two wells in Săcuieni: ternary diagram Na-K-Mg, ternary diagram Cl-SO4-HCO3 and calculation model, which allows location of geothermal fluids in these diagrams. Classification of geothermal water with the two diagrams, involving knowledge of their chemical composition. Thus, it was the chemical composition of geothermal water coming from drillings: 1704 Săcuieni and 752 Săcuieni, situated in Bihor county. Location of geothermal water on the two diagrams we will establish the type of water, depending to the presence in their content of major anions and cations, what is of great importance for use in various purposes of the geothermal fluids.

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