This is the first I've ever heard of an "ambiator," but I expect not the last. When I googled it, I only saw Indian companies working on it, so it makes sense that you'd know.

I understand that it is a two-stage evaporative cooler. Evaporative cooling such as a 'swamp cooler' works great on a moving vehicle, so I imagine a two-stage would be even better. They are, however, not so great on a stopped vehicle. I guess you'll have to have a big fan on the ambiator to cool when stopped or very humid.

Also, you'll need to fill-up with soft or distilled water pretty often if you're cooling alot. Still, you're right, no CFC's, no compressor. Probably lots cheaper.

The idea came to me, when I was thinking of a cooling system for theoccupant in the single door car. A cheap A/c which does notstrain the low powered engine. It will not work in a stopped car,a small air ambiator combined with a good air intake system shouldwork wonders in cooling the small cubic area inside the car.

The air ambiator will not be efficient in Highly damp conditions.