Steam_SPX

Calculate the steam specific entropy as a function of pressure (P in kPa) and quality (vapor fraction). Use for only wet steam. By default, input arguments and returned values are in SI units. You can change the units of measure, for example, by using the Convert function.

Syntax

Steam_SPX(P, X)

Arguments

• P

  Pressure of the steam. P can range from 0.611212678 to 22064 kPa.

• X

  Steam quality (vapor fraction). X can range from 0.0 to 1.0.

Returns

Computed specific entropy of the steam in J/(g K)

Example

• Steam_SPX(15000, 0.7)

  [Returns 4.8229 J/(g K)]