OpenLegislation

Division 3.3.2.2 Dew point

United Kingdom

Original text. Later amendments are not shown.

If humidity is measured as a dew point, the amount of water in an ideal gas x H2O [mol/mol] shall be obtained by means of equation (7-79):

x H2O = p H2O p abs (7-79)

Where:

x H2O

  • amount of water in an ideal gas [mol/mol]

    • p H2O

  • vapour pressure of water at the measured dew point, T sat=T dew [kPa]

    • p abs

  • wet static absolute pressure at the location of dew point measurement [kPa]