FP> I have a question (and I'll freely admit I have little 
 FP> technical knowledge in this particular area)..
 FP> I know that at least some motor home refrigerators have a 
 FP> system whereby one would heat an Ammonia and water system to 
 FP> produce the cooling required for the fridge. What would prevent 
 FP> someone from installing a similar system, say for cooling an 
 FP> average sized mobile home, thereby having a solar powered 
 FP> central air conditioning system?
 FP>  
 FP> I live in southern Arizona, where it is usually warm (hot 
 FP> during the summer). Why not use that heat to produce cooling 
 FP> which would not cost anything to run all day long if desired? 
 FP> (Please no answers about the electric company being concerned 
 FP> about losing money, etc.)
 FP> I guess one question here would be how much heat would it take 
 FP> to evaporate the Ammonia combination, another would be whether 
 FP> or not this system would be self regulating (i.e. when the 
 FP> weather did get cold, the system would not have enough heat to 
 FP> evaporate the Ammonia, etc and would effectively shut off.)
 FP> Any ideas here??
I don't know that much about the technical aspects of this stuff,  but I do 
know that those systems are nowhere near as common as they used to be.  I too 
have one of those little refrigerators outside in an RV,  although I'm 
renovating the beast and have no idea as to whether it works or not at this 
point.
The thing that impresses me the most about larger-scale ammonia-based cooling 
systems is that they're *dangerous*.  There was an incident around here not 
too long ago where a line was ruptured in a warehouse, and a guy died as a 
result.
Something to consider,  I guess...
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