Which of the following statement is correct for ammonia as a refrigerant?
Ammonia is the most environmentally friendly refrigerant. It belongs to the group of so-called “natural” refrigerants, and it has both GWP (Global Warming Potential) and ODP (Ozone Depletion Potential) equal to zero.
Some chemical/physical properties of ammonia are:
At room temperature, ammonia is a colorless, highly irritating gas with a pungent, suffocating odor.
Contact with ammonia is intensely irritating to the mucous membranes, eyes, and skin. Eye symptoms range from lacrimation and edema to a rise in intraocular
It requires a large displacement per TR compared to fluorocarbons.
In pure form, it is known as anhydrous ammonia and is hygroscopic (readily absorbs moisture).
Ammonia has alkaline properties and is corrosive.
It highly reacts with copper and its alloys
Ammonia gas dissolves easily in water to form ammonium hydroxide, a caustic solution, and a weak base.
Ammonia gas is easily compressed and forms a clear liquid under pressure.
Ammonia is usually shipped as a compressed liquid in steel containers.
Ammonia is not highly flammable, but containers of ammonia may explode when exposed to high heat.