Question

why Ammonia acts as a refrigerant?

Answer 1

Anhydrous ammonia is a clear liquid that boils at a temperature of -28°F. Inrefrigeration systems, the liquid is stored in closed containers under pressure. When the pressure is released, the liquid evaporates rapidly, generally forming an invisible vapor or gas. ... This is why ammonia is used inrefrigeration systems.

Answer 2

The compressor compresses theammonia gas. The compressed gas heats up as it is pressurized (orange). The coils on the back of the refrigeratorlet the hot ammonia gas dissipate its heat. The ammonia gas condenses intoammonia liquid (dark blue) at high pressure.