Air - Humidity Measurement from Dry and Wet Bulb Temperature - Relative humidity in moist air can estimated by measuring the dry and wet bulb temperature.Air - Humidifying with Steam, SI units - Using steam to humidify air.Air - Humidifying with Steam - Imperial Units - Estimate the amount of steam required (lb/h in 100 cfm) in humid air.Air - Humidifying by Adding Steam or Water - Air can be humidified by adding water or steam.Air - Heating, Cooling, Mixing, Humidifying or Dehumidifying Processes - Basic air changing state processes - heating, cooling, mixing, humidifying and dehumidifying by adding steam or water - psychometric diagrams and the Mollier charts.Air Psychrometrics - Moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content.Heating, Cooling, Mixing, Humidifying and Dehumidifying Air Processes by Adding Steam or Water - Visualized in the Mollier diagram.* grains of water is commonly used in psychrometrics The state of air with dry bulb temperature 70 oF and relative moisture 60% can be visualized in a psychrometric chart as indicated below:įrom the chart - the saturation temperature is approximately 61 oF and that the humidity ratio is approximately 66 grains of moisture per pound of dry air.Īir with saturation temperature 63 oF and dry bulb temperature 7 5 oF can be visualized in the psychrometric chart asįrom the chart - the relative humidity is approximately 50 % and the humidity ratio is approximately 66 grains* of moisture per pound of dry air. Transform between the Mollier diagram and the psychrometric chart.
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The psychrometric chart is made with the PsycPro software available from
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