They're normally a closed system full of (IIRC) ammonia that is heated by the burning gas (or electric element when on 12V) and that cools when it has a change of state inside the fridge. Simple, inefficient and fairly much indestructible. The do however have to be perfectly level (or very close to) and not moving about to get decent cooling.
In news: snipped-for-privacy@4ax.com, Tim Hobbs blithered:
Back to front!
Its called an absorption refrigerator, and the ammonia is dissolved in water
Steve
That's the 'Combi - Cool ' etc isn't it Jason?
We nearly bought one when I wasn't sure if the second hand Camping Gaz one was working properly on gas (would go out on 'low' and smelled 'fumey' when tested indoors.
I stripped, cleaned, re lubed and re-assembled the fridge gas mech.. It now stays on on 'low' and the fuming seems to be better (less ? but still present). Could be the 'newness' burning off ..
Anyway, we had it on gas in the small porch awning for 3 days with a monoxide alarm beside it and there were no 'bleeps' ..
All the best ..
T i m
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