(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
|
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) |
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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