Anhydrous ammonia refrigeration uses r-717 refrigerant (ammonia) for cooling and freezing. Companies started using r-717 in the 1930s, and it still sees a lot of use today. Because its boiling point is low, it is one of the most efficient refrigerants on the market today. Although it’s used mostly in commercial applications, it plays a major role in keeping things cool today and here some important things to know about r-717 systems.
R-717 and Environment
Even though ammonia fumes are toxic, r-717 does not have a large impact on the environment. Unlike CFCs, which are hazardous to the ozone level, r-717 has a minimal effect on the soil and water systems. Global warming is another concern, as greenhouse gasses form a shield and insulate the earth. However, r-717 does not contribute to global warming. In fact, it has no global warming potential at all.
Properties of R-717
An anhydrous ammonia refrigeration system is very efficient. For example, it doesn’t need large compressors to pump refrigerant in commercial systems. Compressors are smaller on average than other systems, and this saves a lot of energy over time.
An r-717 system can use rotary compressors and centrifugal types. They are also well suited for reciprocating compressors, which gives these systems much versatility.
R-717 chillers are highly efficient. In fact, both flooded and expansion chillers work well. Flooded chillers are the most efficient types because of r-717’s high heat transferring properties.
Cost
R-717 is one of the most cost-effective refrigerants you can use. It is readily available and affordably priced. It’s also highly stable and does not mix with compressor oil. When you consider new installations for commercial cooling and chilling, an anhydrous ammonia refrigeration system is one of the best choices. Make sure to go with a trusted contractor specializing in r-717 systems, for best results.
