Thermodynamics study of flash-binary cycle in geothermal power plant

摘要

This paper was conducted to evaluate the performance of a flash-binary cycle if applied to geothermal power plant (PLTP), where the source of heat came from the residual brine from the separator which was generally re-injected into wells. In the study of flash-binary cycle, there are four types of organic working fluids considered for the binary cycle, namely i-pentane, n-pentane, i-butane, and n-butane. Optimization process was carried out on the performance of plant systems. This paper also discussed the limitation factor to get maximum net power, like: flash pressure, evaporator pressure, A pinch temperature, scaling formation, and thermal design in heat exchanger (preheater, evaporator, and air cooled condenser).