Steam Temperature =

Steam Pressure =

Specific volume Sat liq: Vf =

Specific volume Sat vap: Vg =

Int. Energy Sat liq Uf: =

Int. Energy Sat vap Ug: =

Enthalpy Sat liq Hf: =

Enthalpy Sat vap Hg: =

Entropy Sat liq Sf: =

Entropy Sat vap Sg: =

'Steam Properties' uses curve fit analysis to determine the best fit equations for different saturated steam properties. Calculated values can be off by as much as 5%, care must be taken in using this data for engineering calculations. For precise values, steam tables must always be consulted. These equations are valid from 212° F to 720° F

Contributed by Jerry Power

At atmospheric pressure water boils at 212° F. Note that pressure is not in absolute, but gage. This means pressure on the coastline is 0 PSIg. At 500° F saturated steam has a pressure of 665.3 PSIg. The calculation is off by less than 5%, but close enough as an estimate.

Steam Temperature

Steam Pressure

Specific volume Sat liq: Vf

Specific volume Sat vap: Vg

Int. Energy Sat liq Uf:

Int. Energy Sat vap Ug:

Enthalpy Sat liq Hf:

Enthalpy Sat vap Hg:

Entropy Sat liq Sf:

Entropy Sat vap Sg:

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