There is one other modality where water is wicked up into a membrane and
air is blown across it to evaporate that water.
The "Swamp cooler" or evaporative air conditioner works that way.
You don't have to "boil" water to evaporate it.
If your cool mist humidifier doesn't physically direct water into a
motorized impeller to be "thrown" out the discharge, it's probably a
swamper and that is the most common type sold today with concerns over
water contaminants being inhaled by people with allergies. [or water born
bacterium and fungi]
I haven't seen a wet impeller type for decades.
Some of the ultrasonics use a biocide ion exchange resin in the water
filter..sometimes silver. [Look for the "AgION" logo ]
You may not want to run an ultrasonic without that filter unless you put
some CS in the water...or use sterile water.
If you do put CS in there, it's a good idea to remove or gut the filter
as the resins may capture the CS.
ode
The cool mist vaporizers act either by ultrasonic or mechanical means
to break the water up into tiny droplets -- which will still contain
whatever is dissolved or suspended in the water! The water is turned
directly into tiny droplets, rather than being turned to steam first
and then condensed.
I hope that explains it. Good question!
Be well,
Mike D.
[Mike Devour, Citizen, Patriot, Libertarian]
[[email protected] ]
[Speaking only for myself... ]
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