All air has some water vapor in it so humidifiers just increases the amount of water vapor in the air. There are a few types of humidifiers but the most basic version has a water holder that dispenses water into the wicking filter. A fan blows through the filter, evaporating some of the water and entering the air in the room. The more humidity in the room, the less water will evaporate into the air so in this way it is self-regulating.
For some different types of humidifiers, look here: http://home.howstuffworks.com/humidifier4.htm
Humidifiers work to add moisture to the air through a number of processes, perhaps the most familiar is through evaporation. By creating a large enough surface area in the resevoir of the humidifier, you promote greater evaporation. The amount of evaporation and moisture it adds to the air in a room depends on the moisture that already exists in the air; in a room with dry air, the evaporative process is quicker and more efficient. On the other hand in a humid room, the process is slow and inefficient. Therefore humidifiers are self regulating depending on the current levels of humidity. A vaporizer humidifier achieves the same basic goal but it does so by heating water, creating steam, and blowing the steam throughout the room; some say that this is a safer way to humidify a room but it does require a higher input of energy to boil the water.
Humidifiers are often used to make a room more comfortable, as extremely dry air leaves you feeling like it’s colder than it actually is. There are many different types of humidifiers on the market, including steam, impeller, and ultrasonic models. Steam humidifiers work just like they sound- by releasing steam into the air. With impellers, diffusers are used to produce cool water droplets much in the same fashion as ultrasonic humidifiers. There’s also the wick/evaporating system which works by self-regulating according to the water content already present in the air.
Good question, Kody. There are many different types of humidifiers, and all of them work a little bit differently. The main ones are steam, impeller, ultrasonic, and evaporative humidifiers. Steam designs heat water up to create steam, much like the steam that is created when you take a hot shower. Impeller humidifiers use a sort of fan that shoots water through a diffuser, creating little droplets of water that go into the air. Ultrasonic humidifiers use a small metal diaphragm that vibrates rapidly to create small water droplets. Evaporative humidifiers use a sheet that absorbs water and a fan blowing across it, evaporating the water from the sheet into the air. The one thing they all have in common, though, is that they add water vapor to the air.
Hope this helps!
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