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Goff–Gratch Equation for Water

The Goff–Gratch equation is an experimental correlation proposed to estimate the saturation water vapor pressure at a given temperature.

The Goff-Gratch equation describes a nonlinear relationship between temperature and saturation vapor pressure over water.

Formula

Log[Quantity[0.0009869232667160128, "Hectopascals"^(-1)]*QuantityVariable[Subscript["P", "w"], "Pressure"]]/Log[10] == 0.008132799999999999*(-1 + 10^(-3.49149*(-1 + Quantity[373.15, "Kelvins"]/QuantityVariable["T", "Temperature"]))) - 1.3816*^-7*(-1 + 10^(11.344*(1 + Quantity[-0.0026798874447273215, "Kelvins"^(-1)]*QuantityVariable["T", "Temperature"]))) + 2.1836673985681023*Log[Quantity[373.15, "Kelvins"]/QuantityVariable["T", "Temperature"]] - 7.90298*(-1 + Quantity[373.15, "Kelvins"]/QuantityVariable["T", "Temperature"])

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Goff\[Dash]Gratch Equation for Water"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Goff\[Dash]Gratch Equation for Water"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[
 ResourceObject[
  "Goff\[Dash]Gratch Equation for Water"], {QuantityVariable[
   "T","Temperature"] -> Quantity[27, "DegreesCelsius"]}]
Out[3]=

Source Metadata

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