If anyone has ever looked at an rv refrigerator they might notice that it runs off heat. either from propane or an electric heating element. One of the largest consumers of electricity is an A/C system, why not build a big version of an rv frig and run it on solar. The thing would work better the hotter the sun got. the only electrical part would be the small fan motor inside the house which could be on a PV cell. Another thing I have wanted to do but don't have time.

Hello
A few days ago was on keeleynet a report about a chinese Company
that is producing such technology.

Helmut

@Helmut

have youan link about that ?

Gustav Pes?

http://ch.to/FE

Quote from: d3adp00l on April 16, 2007, 01:20:30 AM
If anyone has ever looked at an rv refrigerator they might notice that it runs off heat. either from propane or an electric heating element. One of the largest consumers of electricity is an A/C system, why not build a big version of an rv frig and run it on solar. The thing would work better the hotter the sun got. the only electrical part would be the small fan motor inside the house which could be on a PV cell. Another thing I have wanted to do but don't have time.

Decompressed propane have a freezing point at approx -17 degrees Celsius. The decompressed gas are put on fire and not reused as in compressor based cooling systems. In compressor based systems, the gas is compressed, then it heats up, are cooled down by cooling ribs before it is decompressed to cool down the frig inside.
The heat is caused by compression or decompressed propane put on fire. So it does not run on heat.

Br.

Vidar

Vidar it does run on heat it uses an amonia/ h2o separator system amonia picks up water in one section which has different evaporative properties than just amonia. It then goes through a h2o separator phase  which changes temp of sytem. One, google how rv friges work, 2, there are no moving parts in an rv frig which is why they run silently, even when running on electricity.