UTILIZATION OF GEOTHERMAL WATER IN BINARY-CYCLE POWER PLANTS

The current state and the importance of the development of binary technologies for heat recovery from geothermal power plants are considered. The scope and spread "geography" of binary installations abroad is showed. The main approaches and design principles for Russian geothermal binary plants are presented. Issues of organic working fluids choice for power plants with binary cycle are considered. The technical characteristics and design features of the equipment for pilot binary plant (2.5 MW capacity) utilizing of discharged brine from Pauzhetskaya Geothermal Power Plant are examined. The results of calculation of variable operating modes depending on flow rate and temperature of the brine and cooling water for the Pauzhetskaya binary geothermal power plant turbine are proposed. This design features of the vacuum, filling and discharge system of the working fluid (R-134a) loop for Pauzhetskaya Geothermal Power Plant are described. The promising power energy projects on the base of binary technologies use are suggested. A list of the planned R&D investigations to simulate and improve the Russian binary energy technologies is proposed.

геотермальная электростанция, однофазный геотермальный теплоноситель, бинарный цикл, рабочее тело, турбогенератор, теплообменник, тепловая схема, оптимизационные исследования, geothermal power plant, geothermal water, binary cycle(organic Rankine cycle ORC), organic working fluid, turbine generator, heat exchanger, schematic of geothermal ORC, parameter optimization

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