In terms of circulating working fluid, non-azeotropic working fluid is proved to be better than single working fluid, among which ammonia-water mixture is considered to be the most ideal working fluid.
In terms of circulating working medium, non azeotropic working medium has been proved to be better than monoworking medium, and ammonia water mixture is considered to be the most ideal working medium.
Non-azeotropic refrigerant is proved to be superior to single refrigerant in circulating refrigerant, and ammonia mixture is considered as the most ideal refrigerant.