What is ammonia refrigeration system?

Ammonia refrigeration systems use ammonia (NH3) as the refrigerant in a vapor-compression cycle. Due to its excellent thermodynamic properties and high latent heat of vaporization, ammonia is an efficient refrigerant, especially in large industrial applications like food processing plants, cold storage facilities, and ice rinks. It works by absorbing heat from the surroundings as it evaporates and releasing heat as it condenses. Ammonia is toxic and flammable, so safety measures and leak detection are critical. It is often used in absorption chillers as well.