Ammonia basics

[kiwi]

Hi TF12
over a long period of time loses some of it's volatility and will remain as a liquid even at atmospheric pressure. This is referred to as dead ammonia and it is in all old systems to varying degrees.

Please explain? I have yet to encounter such a thing. This is a degradation process?

the remaining ammonia can be blown down into water

This adds a new problem as you now have a hazardous material to dispose of. Convenient yes, just ecotoxic if disposed of incorrectly.

Ammonia should never be considered thermodynamically any differently than any other refrigeration fluid. It is a heat transfer medium as are all refrigerants.