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Question
Give reasons for the following:
Liquid ammonia is used as a refrigerant in ice plants.
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Solution 1
Liquid ammonia takes a lot of energy to vaporise. This heat is taken from the surrounding bodies which are consequently cooled down. Thus, it is used as a refrigerant in ice plants.
Solution 2
Liquid ammonia acts as a refrigerant in ice plants. Evaporation needs heat energy, and when liquid ammonia vapourises, it absorbs a large amount of heat without changing its temperature. For these reasons, ammonia is widely used as a refrigerant.
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