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Use a clothes dryer that combines the existing
clothes-drying
technology and add the microwave technology to this.
Microwave ovens cook food by heating up the water present
in
the food. Clothes dryers use heated air that is run throught
the drum to evaporate the water in your clothes.
A combination of both, microwaves heating the water and a
conventional tumbler to even the effect throught the
clothes.
And there you have it: a quick - and probably more energy
efficient - clothes dryer.
-- because of the aversion microwave oven have with metal,
i
guess a combination of the technologies would be useful for
clothes that have metal in them (i.e. jeans rivets and
zippers)
--
how it works...
http://www.gallawa....rotech/howcook.html
[po, Oct 04 2004]
A thought experiment...
http://www.testmagi...c.asp?TOPIC_ID=1917
And prior art. [waugsqueke, Oct 04 2004]
Microwave Clothes Dryer
http://www.pepco.co...h_launder.htm#micro
[phoenix, Oct 04 2004]
Microwave Dryer Technology On the Horizon
http://home.europa....topics/laundry.html
Scroll to the bottom. [phoenix, Oct 04 2004]
US5606804: Microwave clothes dryer and method with hazard detection
http://www.delphion...ils?pn=US05606804__
[phoenix, Oct 04 2004]
U.S. Patent Subclass 34 / 260
http://www.patentec...ss/defs/34/260.html
(A whole class of patents just for microwave dryers!) [phoenix, Oct 04 2004]
(?) you cannot beat wind technology
http://www.jarrotts.com/washing.jpg
[po, Oct 04 2004]
[link]
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//Microwave ovens cook food by heating up the water present in the food.// I think this premise is wrong, sorry. |
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Microwave ovens cook food by "agitating molecules of
water, fat, sugar, salt -as well as many others- within the
food". Just trying to keep it simple /po/. |
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Seems an interesting idea. The important thing when drying clothes (or anything) is to promote evaporation, not to heat the clothes and boil the water. Passing hot air through tumbling clothes in a conventional tumble dryer does this well. |
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I think the idea of microwaving the clothes would risk localised build-ups of temperature, which could have the potential to damage the clothes, but if the microwaves could be evenly distributed and the clothes were properly agitated this problem might not be insuperable. The other issue would be the screening required to stop the microwaves escaping. |
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However, any dryer that produces large amounts of exhaust hot air will not be very energy-efficient, no matter how it is heated. |
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phoe, those links are all a few years old. is this technology slow or stagnant? I can't see it working myself. |
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Clothes don't get dry because they're hot. They get dry because the AIR is hot and dry. Hot, dry air just sucks up moisture. As a side effect, it also warms up the clothes. |
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Heating the clothes by microwaving them would have a minimal effect on drying (it would increase the water's vapor pressure). But I'm not sure the average user would notice the time savings. And I don't think it would result in energy savings. |
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see link. are we still submitting views from back window? |
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"is this technology slow or stagnant?"
I'd be willing to be it's less efficient than what we have now. (I believe) You can't microwave the clothes themselves because of all the metal - you have to heat air or some intermediate substance which heats the air. |
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The reason I posted this idea is because it happens -too
often- that after my clothes dryer's run is over (an hour or
so) my clothes are still wet or damp. Instead of having to
fork another dollar in quarters (that I am either not
willing to spend, or because I just ran out of quarters) i
finish my clothes off in the microwave oven, suffling them
every half minute or so, and it does a pretty good job at
it. |
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The drawbacks of using an oven instead of a clothes dryer
are the fact that you need to toss them around once in a
while and also that humidity lingers as there is not vent
to allow water vapor - steam - to exit the microwave.
Both these issues can be used in a dryer with a tumbler
to replace the manual tossing, and a air and steam
outtake to allow fresh air (steam-free) to come in and out,
taking the steam away as it flows through the tumbler. |
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