Editing Clothes line (section)

==Drying laundry in freezing conditions==
Laundry may be dried outdoors when the temperature is well below the freezing point. First, the moisture in the laundry items will freeze and the clothing will become stiff. Then the frost on the clothes will [[Sublimation (phase transition)|sublimate into the air]], leaving the items dry. It takes a long time and it is usually much quicker to dry them indoors, but indoor drying transfers heat from the air to water vapor, so it is a trade-off between speed and [[Efficient energy use|energy efficiency]]. The added humidity cancels out the reduction in air temperature to some extent.