...is why they were so anxious for us to be done fixing the air separation heat exchangers at the cryogenic gas plant outside of Findlay, Ohio, back in about 1981 or whenever it was I went up there. They had a tanker of liquid nitrogen coming the next morning to pre-cool the exchangers so they could start the pumps back up. And they DID NOT want that tanker sitting in the hot sun for ANY amount of time, because boom. (Well, or because they'd have to start venting it off, and what a waste that would have been.)
More energy than you'd think in cryogenic fluid.
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