humidification

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humidification

[yü‚mid·i·fə′kā·shən]
(engineering)
The process of increasing the water vapor content of a gas.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Humidification

The process of increasing the water-vapor content (humidity) of a gas. This process and its reverse operation, dehumidification, are important steps in air conditioning for human comfort and in many industrial operations. See Air conditioning, Dehumidifier

Air (or other gas) can be humidified by direct injection of water vapor (steam) or, more commonly, by the evaporation of liquid water in contact with the airstream. When evaporation occurs, heat is required to provide the latent heat of vaporization. If no external source of heat is provided, either the water or the air, or both, will be cooled. The cooling of water by this process is the basis of operation for industrial cooling towers, whereas evaporative air coolers often used in hot, dry climates depend upon the air-cooling effect. In both these types of apparatus, humidification of the air occurs, although it is not the prime objective of the operation. In units designed primarily for humidification, the incoming air is usually heated to provide the latent heat of evaporation and to permit the air to leave the unit at controlled levels of both temperature and humidity. See Cooling tower

McGraw-Hill Concise Encyclopedia of Engineering. © 2002 by The McGraw-Hill Companies, Inc.

humidification

The process of adding moisture to a volume of air; for example, to an air-conditioning system.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
In 1988, hospital staff nurses reported symptoms of eye and upper respiratory tract irritation after the nitrogen of CHA and morpholine (a similar nitrogen-containing corrosion inhibitor) into boiler water used to humidify a nursery and neonatal intensive care unit (NIOSH, unpublished data).
As a result of the investigation in this report, NIOSH recommended that the electronics manufacturer discontinue use of amine-based corrosion-inhibiting chemicals in boiler steam that is intentionally released to humidify occupied buildings.
"From a consumer standpoint, one of the key elements they consider when purchasing a humidifier is that the output will take care of the area they want to humidify, so offering a variety of sizes is important," Bruns says.
Also, because with this type of system humidifying capacity is minimally affected by temperature or humidity, dependable moisturizing is provided even in low-temperature ambient environments normally difficult to humidify. The humidifiers also consume minimal energy and are outstandingly quiet: 27-29 decibels (dB).
The unit has a 10-gallon maximum output and can humidify 2,500 square feet of space.
There are two models, which can humidify up to 2,750 square feet of space.
With this system, humidifying capacity is unaffected by temperature or humidity, and dependable moisturizing is provided even in low-temperature ambient environments normally difficult to humidify. The humidifiers are possible to set to the "ECO" operating mode, in which humidifying capacity is curbed.
The firm's space-saving, 6-gallon Moisture Max Natural Moisture Console Humidifier is designed to humidify an entire house, up to 2,355 square feet.
With this system, humidifying capacity is unaffected by temperature or humidity, and dependable moisturizing is provided even in low-temperature ambient environments normally difficult to humidify. When set to the "ECO" operating mode, humidifying capacity is curbed and power consumption is reduced by some 30 percent during normal operation.
A fan blows the water - soaked into the wick - through the air to humidify the room.
"Evaporative humidifiers are the most logical, natural way to humidify the air," says Jim Perella, Lasko vice president of marketing.
The most popular technologies used to humidify homes are not new.