Show artificial ice lc e the method commonly used la irl making ice lor for commercial production Is to sink oblong tin boxes containing distilled or filtered water into tanks tank of salt water through which run iron pipes then compressed ammonia gas gaa Is released in these pipes and by rapid expansion produces an intense cold that freezes the water in the tin boxes into cakes a raging to pounds pound sin in weight in cold storage th the same process Is used minus the water the iron pipes into which the corn coal pressed ammonia goes run on the tda side or top or both of the cold storage room ini bof cause it to become fretting colt cola |