Calculators
Centrifugal Compressor Performance
Polytropic head, gas horsepower, and discharge temperature using the polytropic (Schultz) method. Suitable for recycle gas, wet gas, and process gas services.
Method: Polytropic head Hp = Zavg · R · T1 · [n/(n−1)] · [(P2/P1)(n−1)/n − 1] / MW. Polytropic exponent from n/(n−1) = k/(k−1) · ηp. Discharge temperature T2 = T1 · (P2/P1)(n−1)/n. Gas horsepower GHP = W · Hp / (33,000 · 60). Source: ASME PTC 10, GPSA Engineering Data Book, Section 13.
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