Geothermal Steam Flash Fraction & Power Potential Calculator
Determine steam mass fraction (x) from high-temperature geothermal brine flash separation and calculate net electrical turbine power output (MWe).
Brine Inflow & Separator Pressure
Steam Production & Power Output
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Frequently Asked Questions
What is isenthalpic flash separation in geothermal power generation?
High-temperature pressurized liquid brine is depressurized into a cyclone separator without heat transfer (constant enthalpy). As pressure drops, liquid water vaporizes into clean, dry saturated steam that drives condensing turbines.
What determines the steam flash fraction (x)?
Flash fraction is governed by the energy balance x = (h_in - h_f) / h_fg. High-enthalpy reservoirs (e.g., 280°C brine with h_in ≈ 1250 kJ/kg) yield 20% to 30% steam, while lower-temperature reservoirs (160°C) yield less than 10%.
Why is dual-flash power generation more efficient than single-flash?
In a dual-flash plant, residual hot brine from the high-pressure separator is flashed a second time in a low-pressure separator (e.g., 1.5–2.0 bar), recovering 20% to 35% additional electricity from the same well flow.