Heat Drying

Heat drying is a mechanism of applying heat to a wet surface and removing the resulting evaporated moisture so that the surface dries. The heat provided the needed energy for evaporation, while the added air movement creates vapor pressure differences for the moisture laden air to move to an area of low pressure. As more vapor escapes from the surface it too will fill the temporary vacuum created by the pushed air. This continuous process results in drying of the surface.

This type of air exchange used in heat drying is known to remove large quantities of moisture quickly and efficiently- with a 2000 cubic feet per minute (cfm) heat drying system completely exchanging the air in a 2500 square foot building with 9 foot ceilings once every 11.25 minutes.

Air exchange is vital in keeping a fast evaporation rate in heat drying procedures.

Some larger heat drying systems are installed outside where it takes the moisture laden air and in turn pushes in dry air to replace it. As air is sucked out and dry air pushed in, the rate of heat drying is controlled. With the heat drying equipment, air is heated as it is pushed into the building and circulated.

Heat drying solutions are effective because both exposed and trapped moisture is easily evaporated, and once in a vapor state the water can be exhausted out of the building through a window or pulled out through a dehumidifier. Usually, the heat must be controlled to ensure it does not damage the building being dried.

Heat drying also has additional benefits such as eliminating the conditions that result in mold growth. The heat destroys mold spores and removes moisture from the building. Drying whether by heat or by dehumidifiers will eliminate the need to use antimicrobial solutions in a fresh water situation.  

Heat drying is a remarkable process that combines available technology and ideas to provide highly effective drying using controlled heat and air movements. However, technicians will need to be highly trained and have a good understanding of what makes heat drying work in order to set up a job properly. Once this is accomplished though, the desired results can be obtained within 48 hours with minimal structural damage.

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This article was published on Monday 21 January, 2013.

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