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Interesting concept.
I am a proponent of vacuum drying.
I have a pressure/vacuum chamber with heaters in my shop for molding/degassing processes. I just put the heat on low and toss in a pile of damp clothes and hit the vacuum. A couple minutes later, the water has boiled out and all is dry!
Maybe an ultrasonic generator could add to the efficiency of a low pressure vacuum dryer resulting in a marketable appliance? Shoot, that's a good idea. And I just spilled it on the internet.
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