Research and application of psychrometric table

The relationships between the parameters of moist air is transformed to self-defining Excel functions defined by Visual Basic code. Then the saturated water vapour pressure, humidity ratio, specific enthalpy, dew-point temperature, wet-bulb temperature of moist air can be calculated in an Excel table with concise way, and a psychrometric table is obtained. Manual errors in calculating air treatment process using psychrometric chart can be greatly decreased by means of this table.