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press the bell icon on the youtube app and never miss another update [Music] we are going to understand in the first part the psychometric properties of air part 2 psychometric chart part 3 relationship of air and temperature we are going to see in details part 1 part 2 and part 3 so let us begin with the first part psychometric properties of air the first properties of air is type of temperature white bulb temperature dew point temperature relative humidity humidity ratio enthalpy specific volume vapor pressure so let us understand all these properties in detail drive up temperature a dry bulb temperature are read from any ordinary thermometer that has a dry pulp wet bulb temperature wet world temperatures are read from any ordinary thermometer whose bulb is covered by a wet wick the difference between the wet bulb and the dry bulb temperature is caused by the cooling effect produced by the evaporation of moisture from the wick the evaporation effects reduce the temperature of the wet
