How do I use heat to create cooling?

[@nders]

Hi.

I'm looking for a easy way of using heat to create cooling. I am trying to make a device that will use the heat from one place, to cool something in another place down. Maybe this is more for the engineer forum, but what I need to know first of all is the names of the processes. For the cooling part is was thinking of using something like that, that is in a refrigerator. But first of all I don't know what it's, and I don't know how it works, since I don't know what to search after without a name for that process.
The refrigerator part obvious gets its power from the heat, but I don't know what device to use, to transform heat to power.

Cheers Anders

 

[russ_watters]

It depends on the specifics of your application, but there is such a device that uses heat for cooling called an absorption chiller: http://www.energybooks.com/toc/toc1133.htm

What exactly are you looking to do?

 

[kanzure]

Heat is the motion of energy from one area to another area; what you want to do is setup some sort of gradient such that you can get the source (kinetic energy) and turn it into some destination, just like http://www.makezine.com/blog/archive/2006/06/diy_1000_watt_wind_turbine.html work. The more heat you have, the more gas-like or plasma-like your substance becomes, and plasmas are basically known to be moving so quickly that atoms are ripped into ions, etc.

- Bryan

 

[mgb_phys]

A simple system http://en.wikipedia.org/wiki/Absorption_refrigerator
If you have a lot of heat or it is a greater distance away it might be better to use the heat source to directly drive a turbine and then use that to power a compressor in a conventional refrigerator.