I am trying to calculate the steam dryness fraction(adsbygoogle = window.adsbygoogle || []).push({});

Working pressure of the boiler = 80 psi

The corresponding steam temperature at 80 psi = 162.194 C

The actual measured steam temperature = 115 C

Other useful details at 80 psi

Specific Enthalpy of Water (hf) = 685.231 kJ/kg

Specific Enthalpy of Evaporation (hfg) = 2075.15 kJ/kg

Specific Enthalpy of Steam (hg) = 2760.38 kJ/kg

The formula for Total enthalpy of wet steam

Actual Total Enthalpy = hf + hfg(X)

where (X) is the dryness Fraction

Actual Total Enthaply = 685.231 + 2075.15(X)

Q. What value do i take as the Actual Total Enthalpy in order to calculate the dryness Fraction of the steam? or is there a better way to calculate the steam dryness fraction using just the working pressure, saturated temp and actual stream temp?

Please advice

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# Calculating Steam Dryness Fraction

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