Energy impacts
Adiabatic humidification can offer an advantage if humidification is required at the same time that cooling is needed. Some type of cooling is needed most of the year for many air-handling systems. This type of humidification will provide a free cooling effect along with the humidifying. However, during the heating season adiabatic humidification can result in increased space-heating energy. More heat may be required to maintain the desired space temperature. Isothermal humidification, on the other hand, does not significantly affect the temperature of the surrounding air.
There may be several reasons to choose one type of humidification over the other, including energy usage. Every system should be considered case-by-case to determine what is right for your application. When analysing the energy consumption of a humidification system, it is important to look at the whole picture. Focusing just on the humkidifiers can lead to some misleading results.
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