Ammonia is a well-proven refrigerant in the major commercial and industrial applications. Ammonia has the technical properties that make it considered incompatible with copper, which is the preferred material for pipes and the motor windings for mass production of hermetic systems. Toxicity and the risk to the security of individuals in case of release, limit the applications where ammonia can be used safely and at an acceptable cost. Unusually strong and irritating smell emitted during ammonia can provoke people to panic, as they try to vacate the premises. On the positive side, however, this smell, also serves as a useful early warning signal in case of leaks system. The use of ammonia in the traditional sectors increased in many markets due to the desire to avoid the use of high-GWP refrigerants such as HFCs.
Ammonia is still used mainly in traditional applications of large industrial refrigeration systems, although it has also been introduced in some new segments such as large центральный Air conditioning system and small commercial systems in some markets.
One of the ways to reduce the risks of the use of ammonia to minimize the cost by creating a compact chillers that can be placed in the machine rooms specially designed for the purpose of addressing the risks. There are also systems designed to absorb any ammonia emissions in the spray of water before reaching the public area. Soluble oils for ammonia resulted in the development of dry-expansion of the system with less of simplified tax and oil return in comparison with flooded systems with non-miscible oil...
Refrigerants