Tuesday, January 07, 2020

Personal Ultrasonic Air Cooler for the Smart Apartment

With the hot weather and smoke in South Eastern Australia, I needed a little personal cooling in the Smart Apartment, so I put a small low voltage ultrasonic humidifier up in front of a low voltage electric fan.  The humidifier produces a cloud of water droplets (looks like fog), and the fan blows it to me, making a cooling breeze. This is much more effective, and safer, than hanging a wet cloth in front of a mains powered fan.

I have a Beurer LB12 Mini Air Humidifier, from Appliances Online. This is similar to the Elechomes Ultrasonic Mini Cool Mist Humidifier, available on Amazon.These units run on low voltage, from a mains plug-pack. You use a plastic bottle as a water tank: fill the bottle, screw on a one-way valve and upend the bottle on the unit. A small bottle of water lasts a couple of hours. When the water runs out, the humidifier turns off.

Mini USB Personal Fan
I use a 12 volt fan from a computer, connected to a mains plug-pack. But if you don't want to worry about connecting wires, you could use a Mini USB Personal Fan.

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