Corresponding fitting formula between saturated steam enthalpy and pressure
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Table values: ABCDEFGx; Pressure in kg/cm2; Calculated values; Saturated steam enthalpy in KJ/Kg: 2800.885702, -2.988366, 2.421349, 15.375790, 41.966300, 0.005180, -0.000036; 2660.867000, 25.000000, 2802.140000. Formula: H = A*x + B/x + C*x^0.5 + D*lnx + E*x^2 + F*x^3 + G
It’s best to use a texture, and indicate where it comes from
It’s written too vaguely; I don’t understand.
Request an explanation of the formula. Source, and the basis for the source.
H is the enthalpy value, in units of KJ/KG; X is the pressure, in units of KG/CM2. By substituting the values for A-G into the formula and using EXCEL to perform the calculations, you can find the result. Compare this with the values listed in the table (the values in the post correspond to a pressure of 25 KG/CM2)
This is useful for those who develop their own thermal calculation programs; it’s of no use to others