Temperature and Moisture Holding Capacity of Air

The moisture holding capacity of air varies with temperature

The moisture holding capacity of air increases dramatically with increasing air temperature.

Air Moisture Holding Capacity - SI Units

Moisture holding capacity of air - kg water per kg dry air:

air moisture holding capacity si units

Air Moisture Holding Capacity - Imperial Units

Moisture holding capacity of air - lb water per lb dry air:

air moisture holding capacity si units

Moisture holding capacity of air - lb water per 1000 cubic feet dry air:

air moisture holding capacity si units

Note that the moisture holding capacity of air at 100oF (38 oC) is 10 times the moisture holding capacity of air at 30oF (~ 0 oC). This is a very important observation - especially when working with drying processes where air is used for transport of moisture away from the process and the product.

In general

  • it is good energy economy to increase the temperature in a dryer as much as possible! - the increased moisture transport capacity of the air at a higher temperature will normally out weight the increased energy consumption for heating the dry air to a higher temperature!

Related Topics

  • Steam and Condensate - Steam & condensate properties - capacities, pipe sizing, systems configuration and more
  • Air Psychrometrics - The study of moist and humid air - air condition - psychrometric charts, Mollier diagrams, air temperature, absolute and relative humidity, moisture content and more
  • Thermodynamics - Thermodynamics of steam and condensate applications

Related Documents

Key Words

  • en: air moisture capacity temperature
  • es: humedad del aire de temperatura capacidad
  • de: Luftfeuchte Kapazit├Ąt Temperatur

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