Influence of temperature of return district water on the performance of a backpressure steam turbine installation

Abstract The district heating systems supply heat to a wide range of consumers. In the source such systems, highly efficient technologies are used for combined production electrical and thermal energy mainly based on steam turbine installations with backpressure turbines or adjustable extractions. Combined leads reduction in fuel consumption (fuel saving) compared separate two products. saving resulting from cogeneration reduces carbon dioxide emissions. affects amount saved, leading emitted emissions, both size load realize consumers temperature water that enters return pipeline into source. installations, is heated by boiler-condenser, extraction, it heater extracted turbine. purpose this paper study influence performance installation cogeneration.