Page 195 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

Refrigerant or
Fire Suppression Also
Compound Referred
(Chemical Formula) to as ODP ∗ GWP ∗ Common Building Application
r r
Chlorofluorocarbons
CFC-11 (CCl F) 1 4,680 Centrifugal chillers
3
CFC-12 (CCl F ) 1 10,720 Refrigerators, chillers
2 2
CFC-114 (ClF C-CClF ) 0.94 9,800 Centrifugal chillers
2 2
CFC-500 0.605 7,900 Centrifugal chillers, humidifiers
CFC-502 0.221 4,600 Low-temperature refrigeration
Halons
Halon 1211 (CBrClF ) 6 1,860 Fire suppression
2
Halon 1301 12 7,030 Fire suppression
Halon 2402 <8.6 1,620 Fire suppression
Hydrochlorofluoro-
carbons
HCFC-22 (CHClF ) R-22 0.04 1,780 Air conditioning, chillers
2
HCFC-123 R-123 0.02 76 CFC-11 replacement
Hydrofluorocarbons
HFC-23 (CHF ) ~0 12,240 Ultralow-temperature refrigeration
3
HFC-134a (CF CFH ) R-134a ~0 1,320 CFC-12 or HCFC-22
3 2
replacement
HFC-245fa R-245fa ~0 1,020 Insulation agent, centrifugal
(CF CH CHF ) chillers
3 2 2
HFC-404a ~0 3,900 Low-temperature refrigeration
HFC-407c R-407c ~0 1,700 HCFC-22 replacement
HFC-410a R-410a ~0 1,890 Air conditioning
HFC-507a (mix of ~0 3,900 Low-temperature refrigeration
CF CF H and CF CH )
3 2 3 3
Natural refrigerants
Carbon dioxide (CO ) ~0 1
2
Ammonia (NH ) ~0 0
3
Propane ~0 3

∗ The units for ODP are lb /lb , and the units for GWP are lb /lb for each refrigerant compound r, where
r CFC11 r r CO2 r
lb represents the mass (in pounds) of the respective refrigerant or fire suppression chemical, lb represents
r CFC11
the mass (in pounds) of CFC-11, and lb represents the mass (in pounds) of CO .
CO2 2
The values for the refrigerants are also valid for LEED 2009. Some representative chemical formulas are also
shown.
Source: Courtesy LEED-NC 2.2 Reference Guide.
TABLE 4.4.1 Some Relative Ozone Depletion Potentials (ODPs) and Global Warming Potentials (GWPs).

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