TY - JOUR
TI - The case study of binary power plant based on thermoeconomics in Sichuan, China
AU - Luo Chao
AU - Wang Yongzhen
AU - Gong Yulie
AU - Ma Weibin
AU - Zhao Jun
AU - An Qingsong
JN - Thermal Science
PY - 2018
VL - 22
IS - 2
SP - 1003
EP - 1014
PT - Article
AB - In China, renewable energy power plant will be built from the year 2016 to  2020, because of CO2 emission assignment and energy company demand. A  geothermal power plant will be designed in Sichuan province. The wet  temperature 15°C is selected for cooling temperature. Thermoeconomics of  geothermal power system are analyzed using the Engineering Equation Solver.  The results show that the capacity of binary power system is 3506 kW and  optimum vaporizing pressure is 28 bar, the thermal and exergy efficiency is  13% and 45%.; The turbine shaft work of flash power system is 2301 kW and the  parasitic load is 71kW, the optimum flash pressures is 0.95 bar, the thermal  and exergy efficiency is 7.9% and 34.7%. the total capital investment of  binary system is about 9,767,000 US$, the average annual profit is 1,308,000  $/year; the average rate of return is 13.39%; the payback period is less than  6 years; Condenser destruction and loss exergy is more than other components  in the power system. The geothermal power production cost is 0.04 US$/kWh in  Sichuan province.