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During sensible heating of air _________ decreases.

  • During sensible heating of air Relative humidity decreases.
  • In the sensible heating process, the temperature of the air is increased without changing its moisture content.
  • During sensible heating and sensible cooling process, no moisture is added to or removed from the air. That is humidity ratio of the air remains constant (w = constant).
  • It is to be noted that the relative humidity of air decreases during a heating process even if the humidity ratio remains constant.
  • This is because relative humidity is the ratio of the moisture content to the moisture capacity of air at the same temperature, and moisture capacity increases with temperature.