Absolute humidity

Absolute humidity: x [g/kg]

By absolute humidity x we mean the amount of water in grams, which is contained in one kilogram of air. In the tables and h-x diagram, therefore, the absolute humidity x is given in [g/kg].

x = 0,622 * 610,78 * EXP(Tdb / (Tdb + 238,3) * 17,2694) * RH / 100 / (p * 1000 – 610,78 * EXP(Tdb / (Tdb + 238,3) * 17,2694)) * 1000