Refer to the other page Advanced Psychrometric Calculator which mathematically approximates values from the psychrometric chart with acceptable degree of accuracy.Įnthalpy, h of moist air can be estimated from dry-bulb temperature, Tdb and Relative Humidity (RH%) based on the polynomial function below: In view of the relative simplicity of the mathematical model in this calculator, equations that resemble higher accuracies or effect from other factors such as elevation, shall be referred from ASHRAE or other more advanced psychrometric calculator sites. This calculator referred to various mathematical models from a number of websites that uses relatively simpler, spreadsheet-compatible mathematical equations to estimate values of variables: Relative Humidity (RH), Dry Bulb Temperature, Tdb, Wet Bulb Temperature, Twb, and Dew Point Temperature, Tdp, to a limited degree of accuracy, and within a specific range of temperature input. Psychrometric Equations are hard to represent in simple mathematical models with high degree of accuracies.
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