Unique Steam Turbine for Kizildere Geothermal Power Plant in Turkey

Abstract

This paper introduces the unique steam turbine supplied to Kizildere Geothermal Power Plant in Turkey, which was commissioned in September 2013. This power plant adopts a triple-flash system. The steam turbine and generator are rotated with the steam with three different pressures (high, intermediate and low) to generate electricity. A back-pressure system is adopted for a HP turbine which uses high-pressure steam, and a condensing system is adopted for ILP turbine, which uses intermediate and low pressure steam. This turbine system is tandem by coupling these two turbines to a single shaft. In addition to the uniqueness of steam turbine configuration, the high-pressure steam is also unique because it includes 16.7 weight% non-condensable gas, which is extremely high concentration compared with other geothermal power plants.