Geothermal flash-steam power plant (~90 MW)

A single-flash geothermal power plant on the IAPWS steam tables. A liquid-dominated geothermal well arrives at 240 °C / 35 bar and flashes across a separator down to 8 bar: about 15% of the brine becomes saturated steam and the rest is reinjected. The steam drives a condensing turbine to a 10 kPa vacuum (82% isentropic, exhaust quality ~0.9 — a real wet-steam expansion), a water-cooled condenser drops it to ~46 °C condensate, and a hotwell pump lifts it for reinjection alongside the brine. It converges to 89.9 MW of turbine shaft power. The separator (flash) pressure is the plant's key design knob: the defaultSensitivity sweeps it, trading a larger steam fraction at low pressure against higher steam enthalpy at high pressure — the flash-pressure optimization every single-flash geothermal plant makes. It runs on the rigorous IAPWS-95 water properties (steam package), and the turbine tracks steam quality into the two-phase dome rather than assuming a dry expansion.