Ozone Layer depleting mechanism
CFC
CFCl
2
Cl Ozone
(O
3
)
O
2
ClO
Cl
sunbeam
What is CFC and HCFC?
CFC : Chloro-Fluoro-Carbon
High ODP( ozone depletion potential ) chemical compound, including chlorine. (ODP:0.6-1.0)
For example : R12 (for refrigerator and car air-conditioner)
Low ODP chemical compound, including chlorine and hydrogen. (ODP:0.02-01)
HCFC : Hydro-Chloro-Fluoro-Carbon
For example : R22 (for air-conditioner)
R134a (for Car air conditioner)
HFC
3 : Hydro-Fluoro-Carbon
R407C (for air conditioner)
Refrigerant characteristics
R22
Composition
(wt%)
R22
(100)
Boiling Point
- 40.8
Behavior ---
Pressure at 54.5
C
(kPa)
2,151
Temperature Glide
(deg)
0
ODP 0.055
R407C
R32/R125/R134a
(23/25/52)
-43.6
zeotrope
2,262
5.4
0
R410A
R32/R125
(50/50)
- 51.4
near azeotrope
3,406
0.11
0
06-06
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