Low-Temperature Geothermal Power Generation Technology

摘要

Using geothermal power generation will ease China's energy and environmental issues. However, most of the geothermal resources are mainly in the low-temperature geothermal, hence making the geothermal power generation less efficient. Another pressing issue is how to effectively use the low-temperature geothermal power. This paper will firstly introduce two methods of low-temperature geothermal power generation which are the single-stage expansion method and intermediate medium method. Secondly, the article analyses the calculation method of electric capacity and gross efficiency of low-temperature geothermal power plant. It then discusses the selection criteria of intermediate medium and solving equations of the single-stage and two-stage of optimal evaporating temperature. Finally, several issues of auxiliary power, optimum evaporation conditions, sealing performance, corrosion and fouling of low-temperature geothermal power plant are described.