The Case Studies of Mid-low Temperature Geothermal Power Plant in China

Geothermal energy has the potential to play an important role in the future energy supply of China. Based on mid-low-temperature geothermal resource and waste heat resource, the paper introduces the energy efficiency of single-flash and binary cycle geothermal power plant. The result shows that binary cycle plant is favorable for power generation when water temperature is below 130℃, otherwise, flash steam power plant is a better choice. Furthermore, two project cases were analyzed in the end, focusing on the operating parameters and thermal efficiency. The two types could be improved energy efficiency of low-grade resources and both widely utilized in China.