What is the refrigerant number assigned to Ammonia?

Ammonia is assigned the refrigerant number R-717. This designation reflects its chemical nature and is used within the refrigeration industry to identify ammonia as a refrigerant. Ammonia is known for its efficiency as a cooling agent and its properties, which make it suitable for a variety of industrial refrigeration applications.

R-717 is recognized for its high thermal efficiency, low cost, and minimal environmental impact, as it does not contribute to ozone depletion or global warming. When handling ammonia, it is essential to be aware of its toxicity and the appropriate safety measures, which emphasizes the importance of proper training for refrigeration operators.

In contrast, the other refrigerant numbers listed represent different substances. R-404A and R-134A are commonly used hydrofluorocarbons (HFCs) that are often utilized in commercial refrigeration and air conditioning systems, whereas R-22 is a hydrochlorofluorocarbon (HCFC) that was widely used in residential and commercial air conditioning before being phased out due to environmental concerns. Understanding these designations helps in recognizing the various refrigerants and their applications within the industry.