R-123 is a transitional "hydrochlorofluorocarbon", its use being limited in time by the Montreal Protocol.
Used for industrial air conditioning and building climatisation for water and intermediary fluids cooling. In order to preserve the stratosferic ozone layer, R-123 is used as a replacement for R-11 (CFC) for high power air conditioning systems, fitted with centrifugal compressors (one or more stages).
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Naphthenic mineral oil specially designed for refrigeration compressor lubrification.
R-1233zd is a fluorinated gas from the HFO family. This product has a very low GWP and low pressure. It is suitable for new industrial air conditioning applications and the cooling of buildings where cooling water or intermediate fluids are used in large systems with centrifugal compressors (one or more stages) where R-123 may have been used in the past.