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Originally Posted by ducis
with pre-cooled compounds you have little control over how quickly they boil off especially in low sessions there temps very a lot, where as in Refrigeration you know the temps your going to get and keep.
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Actually I would contend the oposite. If I built a vapor compression refrigerator and a LN2 pot the temperature and consumption of the LN2 pot would be much closer to my predictions than the refrigerator.
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Originally Posted by ducis
pre-cooled compounds are undoubtedly colder but Its proven that there not great for long sessions
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Of course they're not for long sessions at high power, but then we are talking about benchmark cooling here.
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Originally Posted by ducis
I think as soon as you drop below ambient condensation should be a concern whether it likely or not I think its a good habit to get it to
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I'm not saying that you shouldn't prepare for it, but understanding the process correctly can only help.
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Originally Posted by ducis
The more stages you add the more there is to go wrong hence cascades = more dangerous
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Though I would agree that there may be a better chance that a mistake will be made, the danger comes from higher pressure for certain refrigerants. A mistake isn't typically dangerous unless there is high pressures involved, electrical problems aside.