You show a 'Virtual' Temperature under Thermodynamic properties. What is the difference between the six different humidity metrics shown? Why does this program show two different values of specific volume? Simply enter the temperature and relative humidity. There appears to be error in the calculations when converting from one unit system to If you use this app, you can very easily calculate humidity, dew point temperature, etc. Munters PsychroApp provides quick and easy access to calculations such as dew point and grams per kilogram. User may override default input by selecting and entering new value. Site elevation for Dayton, OH - 997 ft amsl (306 m) based on the ASHRAE HOF. Sea Level Pressure - 14.7 psia / 101.3 kPa / 29.92 in Hg / 760 mm Hg (Default when 'ActualĪverage Barometric Pressure in Dayton, OH - 14.18 psia / 97.7 kPa / 28.86 in Hg / 733 mm Hg At the end of the calculation, the user has the option to convert from the English to the SI (or vice versa) unit system. The user then enters a desiredĭry Bulb temperature and one of three humiditymetrics:ĭew Point temperature. To calculate properties, the user must enter either a site elevation (from which an average barometric pressure is calculated) or an actual barometric pressure. It will also provide a number of other thermodynamic properties not found on a typical psychrometric chart. This on-line program calculates typical psychrometric state point properties. Once you have found the dew point, use this as a guide to running safely and effectively in high heat and humidity. Instructions for the Psychrometric Calculator Dew point can be found on any weather reporting app or website, and will give a number in degrees that runners can use to adjust expected paces for an upcoming race or workout.
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