4.2.1.1.Halo carbon refrigerant

Unit 4 - Refrigerants

4.2.1.1.Halo carbon refrigerant
The American society of Heating, Refrigeration and Air-conditioning Engineers (ASHARAE) identified 42 halo carbon compounds as refrigerants but few of them are commonly used. The halo carbon compounds are all synthetically produced and were developed as a Freon family refrigerants eg, R11, R12, R 22, etc.

Azetrope refrigerant
The term ‘azetrope’ refers to a stable mixture of refrigerants whose vapour and liquid phases retain identical compositions over a wide range of temperature

Refrigerant number Azeotropic mixing refrigerants Chemical formula
R.500 73.8% R-12 and 26.2% R-152 Cc12 F2 / CH3 CHF2
R-502 42.8% R -22 and 51.2% R -115 CHC1F2 / CC1 F2CF3
R-503 40% / R-23 and 59.9% R-13 CHF3/CC1F3
R-504 48.2%. R-32 and 51.8%.R-115 CH2 F2/CC1F3

Last modified: Monday, 29 August 2011, 6:55 AM