# Thermodynamic Properties of Water and Steam (IAPWS-IF97)

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## About the Calculators

The Knovel Steam Calculators are based on IAPWS IF-97.

Knovel’s steam calculators provide a full implementation of the 2012 cumulative update to IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam (IAPWS-IF97) by the International Association for the Properties of Water and Steam, as well as IAPWS releases for transport properties and surface tension. The data is presented in the form of a series of calculators, allowing for very fine control of conditions and the resolution of the results. You can choose specific input and output units as desired. As opposed to simple steam tables, the calculators support ranges and increments for temperature, pressure, and quality.

The calculators provide these steam and water properties:

Density Dynamic viscosity Enthalpy Entropy, Internal energy Isobaric heat capacity Isochoric heat capacity Pressure Specific enthalpy Specific entropy |
Specific internal energy Specific Isobaric Heat Capacity Specific Isochoric Heat Capacity Specific volume Speed of sound Surface tension Temperature Thermal conductivity Volume |