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Session: Poster session & Sponsor Exhibition
Session starts: Monday 07 October, 14:00

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Huixing Zhai ()
Qingsong An ()
Lin Shi (Professor)

Abstract:
Rational utilization of waste heat resources has great significance for energy saving and environmental protection. At present, medium and high (150-350℃) temperature waste heat from geothermal water, biomass fuel cannot use efficiently and waste heat from industry progress has generally been discarded. However, the most effective utilization is to generate power. Organic Rankine cycle (ORC) is an effective way to convert low-grade waste heat into power. This work studies the type, capacity and utilization situation of the 150-350℃ temperature waste heat in China, mainly including geothermal water, biomass fuel and waste heat from industry progress. The influence of the heat source characters on the ORC system’s payback time is studied based on the present technical status. Industry waste heat recovery system has the lowest cost while geothermal system needs an electricity price subsidy from the government. Finally, an approach to construct suitable heat sources for ORC systems in thermal dynamic and economic perspective is given, thus providing reference for the following ORC system research.