Ultrasonic clothes dryer

[Gasoline Fumes]

I line dry. My biggest complaint is the bird s***.

[Xist]

Clothespin marks?

[niky]

We use hangers. Granted, if it's a heavy item, it can stretch down from the hanger, as well, but typically you spin dry the clothes so they're not sopping wet before you hang them on the line.

Also, sun bleaching isn't an issue if you hang them under an awning or a roof. We've got a roofed off open-air laundry area specifically for drying clothes.

[Xist]

I found some patents for vacuum clothes dryer, one was from 1962. All of them still use heat. I know you will not be pulling any industrial vacuums, but how much heat still radiates in a near-vacuum? Our planet is uninhabitably cold, right?

Still, couldn't you heat the vanes?

[niky]

Waste of energy. Why not drape your clothes over your car radiator?

[redpoint5]

Originally Posted by Xist

I found some patents for vacuum clothes dryer, one was from 1962. All of them still use heat. I know you will not be pulling any industrial vacuums, but how much heat still radiates in a near-vacuum?

I'd be curious to see how much energy it takes to dry by vacuum. The water boiling off would cause the cloths to loose heat since that is what happens when water changes phase from liquid to gas. Would the cloths freeze after enough water boiled away? Somehow I think drying by vacuum would still require heat input.

[jamesqf]

Originally Posted by redpoint5

I avoid the sun as much as possible.

Tastes differ, but from my point of view, that would be a pretty miserable way to live :-(

Have you ever tried line drying?

Yes, I seldom do anything else. 'Seldom' as the last time I used my dryer was one maybe 4 or 5 years ago, when we had what seemed like a couple of weeks of continual rain (AKA "Pineapple Express").

It fades cloths in just a few dryings. I remember having a hot pink shirt as a kid in the 80s, and it turned into a light pink in a matter of weeks when summer came and my mom started using the line.

You sure it was the line drying, and not the bleach your mom put in the wash? I can't say that I've ever noticed much fading myself, but then my taste runs more to lighter colors anyway.

[jamesqf]

Originally Posted by redpoint5

Would the cloths freeze after enough water boiled away? Somehow I think drying by vacuum would still require heat input.

In my experience, clothes hung on a line in cold weather (think northeast US, with high temp maybe 10F) will freeze dry if it's sunny and there's a good breeze.

With a vacuum dryer, I don't think the problem would be freezing so much as it would be maintaining a vacuum. That is, as you pump the chamber to a vacuum, some water evaporates from the clothes and raises the pressure up to an equilibrim point, so you have to keep pumping...

[redpoint5]

The answer to the question of whether water would boil or freeze under vacuum is, yes.

https://medium.com/starts-with-a-ban...f36#.83oa25yhc

https://www.youtube.com/watch?v=pOYgdQp4euc

[Gasoline Fumes]

Originally Posted by Xist

Clothespin marks?

Those are just proof of the energy and money I save!