Calculators — Gas & Steam

Five compressible/thermal calculators: single-stage centrifugal + Roots (PD) blower rating (GPSA §13 / API 617), an IAPWS-IF97 steam-property lookup (Regions 1/2/4), a Spirax-Sarco/TLV flash-steam & condensate-load enthalpy balance built on the steam tables, an ISA-75.01.01 (IEC 60534-2-1) compressible control-valve Cv/Kv sizer, and a Souders–Brown (GPSA §7 / API 12J) gas-liquid knock-out drum sizer. All are closed-form (no iterative solve) except the steam-property Gibbs-energy series evaluation.