So personal watercooling is neat.
There exist commercial personal cooling units- they basically run cooled liquid through a series of tubes sewn into garments.
One was posted recently.
I've googled around, and there doesn't seem to be a publicized DIY version, though seemingly all the components for one are
available. This surprises and delights me.
Specifications
-Cools a generic human unit
-Less than 25 pounds
-Less than .5 ft³
-Runs for a 3 hours (or easy battery changing)
-Is easy to build
-Costs less than 200$
these come with anything you stick on a meatsack:
-Non-Toxic (spills..)
-Comfortable
-Doesn't overheat
-Doesn't overcool
I see a few ways to go.
First, ice in the reservoir; probably won't last long.
Second, evaporative cooling from the reservoir. Might work well, requires a lot of tuning.
Third, unknown chemical concoction in a can. Compressed liquid nitrogen? Might make the pipes too brittle, have to cool the reservoir then pump it through.
My favorite is the evaporative cooling. Nothing exotic involved.
It'd need a high surface area heat sink thermally coupled to the piping system, and a fan blowing across it.
The easiest is probably ice in the reservoir.
Components
-Water pump
Low-voltage, small, quiet, high-flow and high-pressure are ideal
-Tubing
Thin-walled, flexible, durable. A thin plastic should suffice.
-Battery Pack
Probably 12V. NiCd or NiMH should suffice, Li-Poly or Li-Ion would be neat. Off-the-shelf R/C packs are ideal.
-Reservoir
Insulated plastic container, Camelbak might work. Cheap tupperware drink containers seem best now.
To attach the tubing to garments, you can just trace the route beforehand, then stitch it into place. The inside of a light under-undersuit would be a good place. Components in the backpack- the reservoir, the pump, the batteries- can be attached by ziptie, velcro, epoxy, tie wire, etc.
If we can make this happen, it would be a boon to anyone who wears a costume, or has to wear something uncomfortable in hot weather. I know I'd wear it a lot even without armor.. stupid Florida.
There exist commercial personal cooling units- they basically run cooled liquid through a series of tubes sewn into garments.
One was posted recently.
I've googled around, and there doesn't seem to be a publicized DIY version, though seemingly all the components for one are
available. This surprises and delights me.
Specifications
-Cools a generic human unit
-Less than 25 pounds
-Less than .5 ft³
-Runs for a 3 hours (or easy battery changing)
-Is easy to build
-Costs less than 200$
these come with anything you stick on a meatsack:
-Non-Toxic (spills..)
-Comfortable
-Doesn't overheat
-Doesn't overcool
I see a few ways to go.
First, ice in the reservoir; probably won't last long.
Second, evaporative cooling from the reservoir. Might work well, requires a lot of tuning.
Third, unknown chemical concoction in a can. Compressed liquid nitrogen? Might make the pipes too brittle, have to cool the reservoir then pump it through.
My favorite is the evaporative cooling. Nothing exotic involved.
It'd need a high surface area heat sink thermally coupled to the piping system, and a fan blowing across it.
The easiest is probably ice in the reservoir.
Components
-Water pump
Low-voltage, small, quiet, high-flow and high-pressure are ideal
-Tubing
Thin-walled, flexible, durable. A thin plastic should suffice.
-Battery Pack
Probably 12V. NiCd or NiMH should suffice, Li-Poly or Li-Ion would be neat. Off-the-shelf R/C packs are ideal.
-Reservoir
Insulated plastic container, Camelbak might work. Cheap tupperware drink containers seem best now.
To attach the tubing to garments, you can just trace the route beforehand, then stitch it into place. The inside of a light under-undersuit would be a good place. Components in the backpack- the reservoir, the pump, the batteries- can be attached by ziptie, velcro, epoxy, tie wire, etc.
If we can make this happen, it would be a boon to anyone who wears a costume, or has to wear something uncomfortable in hot weather. I know I'd wear it a lot even without armor.. stupid Florida.