Free ~upd~ - Refprop 91

Supports over 120 pure fluids and a vast array of humid air properties. Cost: 100% free for both commercial and academic use. 2. DWSIM (Open-Source Process Simulator)

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: Refinements for low-global-warming-potential (GWP) refrigerants like R-1234yf and R-1234ze(E). Supports over 120 pure fluids and a vast

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Models for pure fluids and mixtures that often match experimental data uncertainties.