Heat powered cooler?

It's rather warm around here. And by "rather warm," I mean it's 105 in the shade, and it's 89 in the house with the swamp at full blast. Does anyone have an idea for powering a cooler with pure heat? Perhaps similar to those lightbulb-looking devices that have an inner bit that spins around when placed in direct sunlight, except that is running a little generator that is then running a computer fan, like the ice box air conditioner spotted on this site. The main thing is I'd like the device to actually be powered by heat. Just for the heck of it. Even if it's just heat mechanically powering something to power a fan that I could have just plugged into the wall. So no solar cells making electricity. I can make parabolic reflectors easily if needed, so don't be afraid to use them. What's the best way you can think of to cool off using heat? "Best" can include inefficient but really awesome, like a fresnel lens pointed at a boiler that is providing steam to run a gigantic fan. I'll go get my goggles, ray gun, and keys to the airship.

sort by: active | newest | oldest
1-10 of 25Next »
NachoMahma9 years ago
. You can't run anything off of "pure heat." There must be a differential - just as with electricity, hydraulics, &c. Ie, one "side" has to be "hotter" (more energetic) than the other to do any work.
. Just about any of the "free" power sources you can find (photovoltaic, wind turbine, hydraulic ram, solar boiler, &c, can be used to drive your cooler.
. BTW, the "lightbulb-looking devices that have an inner bit that spins" thing is called a Crookes Radiometer. As you've probably figured out by now, they don't produce any power to speak of.
Rishnai (author)  NachoMahma9 years ago
Ha, I guess you're right about the "pure heat," but it rules out photovoltaic (unless I heat something up until it glows, and then take the miniscule amount of power from that light hitting a PV to power something). In keeping with the Rube Goldberg-type concept, perhaps using a Crookes Radiometer and shining a laser through it to a detector of some sort. The more often the beam is interrupted, the faster an electric fan turns. Now I just need to figure out how to have a fan's power source be controlled by a laserbeam. If not powered by heat, it would at least be regulated by the amount of heat in the room.
"regulated by the amount of heat in the room"? i'm afraid that's called a thermostat, :P when the tempurature goes up, the ac turns on...
Rishnai (author)  AnarchistAsian9 years ago
Har har har. Of course, if it ain't broke, it doesn't have enough features yet. Why have a regular thermostat when you can make a hideously overcomplicated one?
i totally agree with you! :D overcomplication is quite hilarious sometimes...
The radiometer, to my knowledge, runs from radiant heat shining directly on it (like sunlight). If this is what you are looking for, then I apologize for my comment.
got one of those hand made in germany, they're pretty cool.
how about: get iceblocks from the grocery store and put them on a piece small "half pipe" (tilted down) then put a turbine (connected to a fan blade) at the bottom of it, when the heat makes the ice melt, the water will turn the turbine (with fan) to cool down. innefficient but it's an idea!
Rishnai (author)  AnarchistAsian9 years ago
I like it!
1-10 of 25Next »