On 04/17/2018 03:56 PM, Dave Cole wrote:
If you Google absorption chiller you will see that Ammonia
is again being considered for solar -refrigeration
systems. I really don't understand why, but there is a
lot of chatter on that topic.
Direct thermal refrigeration may make sense. Sun heats a
water loop, drives off the ammonia, and then it is
reabsorbed to cool the cold side. You could do the same
with lithium bromide, although that is a salt that could end
up clogging things.
Ammonia can be a hazard, but its used all of the time by
farmers for fertilizer around me. I've been exposed to
ammonia gas and it is not fun.
When confined to a building, it can cause MASSIVE
explosions. The fire marshalls just LOVE ammonia systems!
Jon
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