Fig. 3: Chemical Refrigerants
Examples of chemicals used as HVAC refrigerants and for other purposes with their R-number, Ozone Depletion Potential (ODP), and Global Warming Potential (GWP) values. ODP and GWP values are from “The Treatment by LEED® of the Environmental Impact of HVAC Refrigerants” by the TSAC HCFC Task Group, September 28, 2004, available from www.usgbc.org/Docs/LEED_tsac/TSAC_Refrig_Report_Final-Approved.pdf accessed on May 25, 2007.
|
R number |
Chemical Name |
Classification |
Trade Name |
ODP |
GWP |
|
R11 |
Trichlorofluoromethane |
CFC-11 |
Freon 11 |
1.0 |
4,680 |
|
R12 |
Dichlorodifluoromethane |
CFC-12 |
Freon 12, Halon 122 |
1.0 |
10,720 |
|
R22 |
Chlorodifluoromethane |
HCFC-22 |
Freon 22 |
0.04 |
1,780 |
|
R23 |
Trifluoromethane |
HFC-23 |
Freon 23 |
4x10-4 |
12,240 |
|
R123 |
2,2-Dichloro-1,1,1-trifluoroethane |
HCFC-123 |
SUVA 123 |
0.02 |
76 |
|
R134a |
1,1,1,2-Tetrafluoroethane |
HFC-134a |
|
10-5 |
1,300 |
|
R290 |
Propane |
|
Duracool |
0 |
3 |
|
R407C |
Mix of R-32/R-125/R-134a (23/25/52) |
|
|
10-5 |
1,700 |
|
R410A |
Difluoromethane and Pentafluoroethane |
HFC-410A |
Puron |
10-5 |
1,890 |
|
R717 |
Ammonia |
|
|
0 |
0 |
|
R718 |
Water |
|
|
0 |
0 |
|
R744 |
Carbon Dioxide |
|
|
0 |
1 |
|