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Posted by Dale Farmer on June 24, 2005, 10:03 pm
nicksanspam@ece.villanova.edu wrote:
>
> >Even better are the cool vests. I decided to buy one this year
> >because of the excessive heat we had last summer. While they don't
> >prevent sweating or being hot, they do prevent overheating...
> >They are expensive...
>
> EBIce makes a more expensive (~$250 vs $175) cooler with a 2'x2' flat
> flexible gadget filled with tubing for medical purposes. Wrap the gadget
> around some body part, eg a shoulder, put ice and water into the cooler,
> and a 22 W pump moves cold water out one hose to the gadget and back into
> the cooler through another, but it's hard to get a good thermal connection
> between the gadget and the body part without impeding blood circulation,
> and the pump has a cycle timer vs a temp control on the gadget, and you
> have to unplug yourself whenever you get up to walk around the room, and
> the cooler is only 6"x6"x10" inside.
>
> We might improve this with a larger cooler and a $10 10W 1 gpm fountain
> pump and a 12" flat spiral of 1/4" tubing on top of some foamboard that
> sits on a chair under a person or on top of the cooler, under a person.
> It might have frozen 1-liter soda bottles floating in water instead of
> 1-pound $25 Cool Vest ice/gel packs, like the frugal fan in Toronto, but
> less wasteful of energy, since 32 F water is never discarded, and
> we are only cooling a person vs a whole room.
>
> Then again, we have concrete chairs. And a B12 (12 ga 2x3 U-shape) Unistrut
> armchair with webs of closely-spaced struts touching a body and flanges
> facing away might be a good heat sink. We might use 150' of strut (about
> 400 pounds) with lots of 1/2" bolts and right-angle connectors.
>
> Nick
The mind boggles. Do you have pictures on the web someplace of these
chairs?
--Dale
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