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BEAM P
LUS FOR
N
EW
B
UILDINGS
M
ATERIALS
A
SPECTS
(M
A
)
V
ERSION
1.2
M
A
8 O
ZONE
D
EPLETING
S
UBSTANCES
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 83
3
M
ATERIALS
A
SPECTS
3.2
S
ELECTION OF
M
ATERIALS
M
A
8 O
ZONE
D
EPLETING
S
UBSTANCES
E
XCLUSIONS
None.
O
BJECTIVE
Reduce the release of chlorofluorocarbons (CFCs) and
hydrochlorofluorocarbons (HCFCs) into the atmosphere.
C
REDITS ATTAINABLE
2
P
REREQUISITES
Compliance with the Ozone Layer Protection Ordinance Chapter 403.
C
REDIT REQUIREMENT
a) Refrigerants
1 credit for the use of refrigerants with a value less than or equal to the
threshold of the combined contribution to ozone depletion and global
warming potentials using the specified equation.
b) Ozone depleting materials
1 credit for the use of products in the building fabric and services that
avoid using ozone depleting substances in their manufacture,
composition or use.
A
SSESSMENT
a) Refrigerants
The air-conditioning and refrigeration equipments shall fulfill the following
equation which determines a maximum threshold for the combined
contributions to ozone depletion and global warming potentials:
LCGWP + LCODP
10
5
≤ 775
LCGWP = [GWPr
(Lr
Life + Mr)
Rc] / Life
LCODP = [ODPr
(Lr
Life + Mr)
Rc] / Life
LCGWP = Lifecycle Global Warming Potential (kg CO
2
/kw -Yr)
LCODP = Lifecycle Ozone Depletion Potential (kg CFC 11/kw-Yr)
GWPr = Global Warming Potential of Refrigerant (0 to 12,000 kg CO
2
/kg r )
ODPr = Ozone Depletion Potential of Refrigerant (0 to 0.2 kg CFC 11
/kg r )
Lr = Refrigerant Leakage Rate (0.5% to 2.0%; default of 2% unless
otherwise demonstrated)
Mr = End-of-life Refrigerant Loss (2% to 10%; default of 10% unless
otherwise demonstrated)
Rc = Refrigerant Charge (0.2 to 2.3 kg of refrigerant per kW of gross
ARI rated cooling capacity)
Life = Equipment Life (10 years; default based on equipment type,
unless otherwise demonstrated)
For systems with different types of equipment, a weighted average of all
air-conditioning and refrigeration equipments shall be calculated using
the following equation:
[ ∑ (
LCGWP + LCODP
10
5
)
Qunit ] / Qtotal ≤ 775
Qunit = Gross ARI rated cooling capacity of an individual air-
conditioning or refrigeration unit (kW)
Qtotal = Total gross ARI rate cooling capacity of all air-conditioning or
refrigeration (kW)