Half a croissant, on a plate, with a sign in front of it saying '50c'
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watershirt 2: the wickening

Blow air and cool people with it
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This water-wicking shirt would include a special patch on the back (or wherever it may be comfortable. Sleeves?). The patch would be waterproof on the inside, but designed to easily absorb and exude water on the outside. The water container would wick to it.

Blowing thereupon would be a battery powered fan, further reducing the temperature of that patch of cloth, and therefore the wearer.

Voice, Jul 26 2020

Octocool http://octocool.com/
One of the first search results for clothes with built in fans ... [kdf, Jul 26 2020]

And from Japan https://abcnews.go....s/story?id=14210492
[kdf, Jul 26 2020]

Thermoelectric personal coolers https://www.nature..../s41467-019-09707-8
[kdf, Jul 26 2020]


       A wicking shirt provides evaporative cooling all over, not just on one patch. Clothing with built in fans do exist, but not exactly as you’ve described.   

       I recall seeing product using peltier coolers (not fans) to provide point cooling on the neck or wrists, still trying to find link.
kdf, Jul 26 2020

       <Cursory internet search/>   

       There is apparently extensive Prior Art in the use of evaporative cooling of humans.   

       It's called "sweating" ... Baked and WKTE.   

       Probably more efficient to either (a) wear light clothing and allow natural cooling to occur, using the liquid supply to replace lost fluids by ingestion, or   

       (b) (much more effective) go somewhere cooler.
8th of 7, Jul 26 2020


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