Turbo-Charger for cooling.

I beleive the that the exaust is still the "working fluid" and you are scavaging energy from the engine. Where will your energy come from? The Cooling comes from the JT effect of the expanding gas so you will have to put energy into the system to compress the air.

the kinetics is teh oldest form of working refrigeration, but quite simple.

the turbo charger bit is not the same as a car type the turbine input comes form the engine, hot exhaust gases, which then dump to atmoshpere the compressor picks up clean outside air and compresses it, leaving it hot. It is then cooled by air to air intercooler (still under pressure) then realeased through ventury nozzles into the cabin space reducing pressure and lowering the ambient inside temperature to fuel its expansion.

All you need is a compressor unit and drive. If you have a V8 or VW engine you can regrind the cams to use half pistons as motor and half as compressor ( alternatively replace half teh valves with self opening units) Black Poly pipe is ok for pressure side to nozzles. a coil of metal pipe or a series of old car aircon condensor coils immersed in water or buried in wet soil will work as the heat exchanger/cooler. On teh compressor side you can replace the piston rings with neoprene O-rings. You can also drive the whole thing from water wheels or place a piston air pump onto a windmill. you will need a very large pressure tank . Try used plastic bottles, clamp the screwcap on with a pipe bandclamp so it doesn't pop off.

You could use the turbo compressor by belt driving it from a large wheel such as a bicycle wheel rim wired to a windmill turbine to the center of teh shaft (leather belt or womens pantyhose belt (less woman)

apologies for the crook spelling.

Try a Ranke/Hilsch tube. No moving parts, just supply it with compressed air and get cold air from one end and hot air from the other. Simple to build and fairly efficient and not quite as noisy as the turbine but please do wear ear protection when experimenting with either.

These are commonly called Votex tubes. Here is one commercial device:

http://www.arizonavortex.com/vortex-tube/

It's called the Coleman refrigeration cycle, from ships, circa 1920