Calculators
Steam Turbine Performance
Shaft power, electrical power, theoretical vs actual steam rate, exhaust quality, and cycle heat rate for a back-pressure or condensing steam turbine. User enters inlet/exhaust enthalpies from steam tables.
References: GPSA Engineering Data Book 14th ed. Section 15 (Drivers); Bloch & Soares, Steam Turbines: Design Application and Re-rating, 2nd ed.; ASME PTC 6 (Performance Test Code, Steam Turbines). Formulas: TSR = 3412.14/(h1 − h2s) [lb/kWh]; ASR = TSR/ηisen; Pshaft = ṁ/ASR × ηmech; heat rate HR = Qin/Pshaft. Enter enthalpies from steam tables at the inlet and isentropic exhaust states.
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