However, if with the same air flow we try to cool down a drop of water, we could reach a lower temperature than 20✬. If we try to cool down a solid object with an air flow of, let´s say, 20✬, the minimum temperature that theoretically we can reach for this solid object Relative Humidity in Production and Process Environments - Recommended relative humidity in production and process environments - like libraries, breweries, storages and more.The wet bulb temperature is the minimum temperature that can be reached by evaporative cooling.Moist Air - Transforming the Mollier Diagram to a Psychrometric Chart - or vice versa - The relationship between the psycrometric chart and the Mollier diagram.Moist Air - Psychrometric Terms - Dry and wet bulb temperature, specific volume, relative humidity, enthalpy and more.
Moist Air - Cooling and Dehumidifying - Cooling and dehumidifying processes of moist and humid air - sensible and latent cooling.Mixing of Humid Air - The change in state wwhen mixing moist air - enthalpy, heat, temperature and specific humidity.Heat Recovery Efficiency - Classification of heat recovery efficiencies - temperature efficiency, moisture efficiency and enthalpy efficiency - online heat exchanger efficiency calculator.Evaporation from a Water Surface - Evaporation of water from a water surface - like a swimming pool or an open tank - depends on water temperature, air temperature, air humidity and air velocity above the water surface - online calculator.Dehumidifiers - Classification of dehumidifiers.Cooling and Heating Equations - Latent and sensible cooling and heating equations - imperial units.Air Drying Force - The drying force of air depends on the air moisture holding capacity and the water surface to air evaporation capacity.Air - Psychrometric Chart for Standard Atmospheric Conditions - Imperial Units - Psychrometric chart for air at barometric pressure 29.921 inches of Mercury and temperature ranging 20 oF to 120 oF.Air - Humidity measured by the 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 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 - The study of 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.Īlternatively - if the dry bulb temperature is 19 oC and the wet bulb temperature is 12 oC - the state of the air can be visualized in the Mollier chart like:įrom the chart we can see that the enthalpy of the air is approximately 33 kJ/kg and the specific humidity is approximately 0.0056 kg/kg. The specific humidity is approximately 0.0076 kg/kg. The wet bulb temperature is approximately 14.5 oC. The state of air with dry bulb temperature 21 oC and relative humidity 50% is indicated in the Moliier chart below:įrom the Mollier chart the enthalpy of the moist air is approximately 40 kJ/kg. Transform between Mollier diagram and psychrometric chart.The Mollier diagram is a variant of the psychrometric chart. The Mollier diagram is a graphic representation of the relationship between air temperature, moisture content and enthalpy, and is a basic design tool for building engineers and designers. Air is a mixture of mostly oxygen, nitrogen and water vapor.
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