Psychrometrie the thermodynamics of moist air. All conditions can be humid air as a gas-vapor mixture (dry air is known as "gas" water vapor as the "steam") constitute of dry air and water vapor. The gas-vapor mixture thus consists of condensing and non-condensing components and acts as his two components, on the meteorology and air conditioning (ventilation) typical boundary conditions concerning the same temperature and pressure as ideal gases .
Show
let the states and state changes of the humid air in the h, x diagram (enthalpy vs. Steam load of the air). is mainly in Germany, the Mollier diagram used
while in the U.S., the carrier-chart application place. In the Mollier diagram the considered area of the unsaturated with water vapor by the rotation of abscissa of the coordinate system is increased. The rotation was made so that the isotherm for zero degrees Celsius at just the right balance is. The Enthalpielinien run therefore not level, but run with a gradient of the slope, which corresponds to the heat of vaporization of water at zero degrees Celsius. are mentioned in the chart next to the isotherms, the relative humidity and the density of the air mixture as a parameter.
The states can be calculated mathematically.
I have programmed an example with VAB, available online. Psychometric calculations.
Here is the link to the program:
http://public. sheet.zoho.com / public / tryhagi hagipsychrometrie /
The formulas are openly available, descriptions of the calculations are written in separate documents.
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