(1 point)
Intent
To reduce ozone depletion and support early compliance with the Montreal Protocol while minimizing direct contributions to climate change.
Requirements
Option 1. No refrigerants or low-impact refrigerants (1 point)
Do not use refrigerants, or use only refrigerants (naturally occurring or synthetic) that have an ozone depletion potential (ODP) of zero and a global warming potential (GWP) of less than 50.
OR
Option 2. Calculation of refrigerant impact (1 point)
Select refrigerants that are used in heating, ventilating, air-conditioning, and refrigeration (HVAC&R) equipment to minimize or eliminate the emission of compounds that contribute to ozone depletion and climate change. The combination of all new and existing base building and tenant HVAC&R equipment that serve the project must comply with the following formula:
IP units
LCGWP |
+
|
LCODP
|
x
|
105
|
≤
|
100
|
|
SI units
|
Calculation definitions for LCGWP + LCODP x 105 ≤ 100 (IP units)
|
Calculation definitions for LCGWP + LCODP x 105 ≤ 13 (SI units)
|
LCODP = [ODPr x (Lr x Life +Mr) x Rc]/Life
|
LCODP = [ODPr x (Lr x Life +Mr) x Rc]/Life
|
LCGWP = [GWPr x (Lr x Life +Mr) x Rc]/Life
|
LCGWP = [GWPr x (Lr x Life +Mr) x Rc]/Life
|
LCODP: Lifecycle Ozone Depletion Potential (lb CFC 11/Ton-Year)
|
LCODP: Lifecycle Ozone Depletion Potential (kg CFC 11/(kW/year))
|
LCGWP: Lifecycle Direct Global Warming Potential (lb CO2/Ton-Year)
|
LCGWP: Lifecycle Direct Global Warming Potential (kg CO2/kW-year)
|
GWPr: Global Warming Potential of Refrigerant (0 to 12,000 lb CO2/lbr)
|
GWPr: Global Warming Potential of Refrigerant (0 to 12,000 kg CO2/kg r)
|
ODPr: Ozone Depletion Potential of Refrigerant (0 to 0.2 lb CFC 11/lbr)
|
ODPr: Ozone Depletion Potential of Refrigerant (0 to 0.2 kg CFC 11/kg r)
|
Lr: Refrigerant Leakage Rate (2.0%)
|
Lr: Refrigerant Leakage Rate (2.0%)
|
Mr: End-of-life Refrigerant Loss (10%)
|
Mr: End-of-life Refrigerant Loss (10%)
|
Rc: Refrigerant Charge (0.5 to 5.0 lbs of refrigerant per ton of gross AHRI rated cooling capacity)
|
Rc: Refrigerant Charge (0.065 to 0.65 kg of refrigerant per kW of AHRI rated or Eurovent Certified cooling capacity)
|
Life: Equipment Life (10 years; default based on equipment type, unless otherwise demonstrated)
|
Life: Equipment Life (10 years; default based on equipment type, unless otherwise demonstrated)
|
For multiple types of equipment, calculate a weighted average of all base building HVAC&R equipment, using the following formula:
IP units
|
|
SI units
|
∑ ( LCGWP + LCODP x 105 ) x Qunit
|
≤ 100
|
∑ ( LCGWP + LCODP x 105 ) x Qunit
|
≤ 13
|
Qtotal |
Qtotal |
Calculation definitions for [ ∑ (LCGWP + LCODP x 105) x Qunit ] / Qtotal ≤ 100
|
Calculation definitions for [ ∑ (LCGWP + LCODP x 105) x Qunit ] / Qtotal ≤ 13
|
(IP units) |
(SI units) |
Qunit = Gross AHRI rated cooling capacity of an individual HVAC or refrigeration unit (Tons)
|
Qunit = Eurovent Certified cooling capacity of an individual HVAC or refrigeration unit (kW)
|
Qtotal = Total gross AHRI rated cooling capacity of all HVAC or refrigeration
|
Qtotal = Total Eurovent Certified cooling capacity of all HVAC or refrigeration (kW)
|
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