Energy And Atmosphere Flashcards
Carbon offset requirement
Green-e climate
What uses most energy in commercial buildings
Space heating
Commissioning pay back period
0.7 years
Building commissioning
Verify building, document that system meet owner project requirements, during substantial completion phase
Baseline building performance
Determined W/ ASHRAE 90.1 - so hot! global warming ahh
Lighting power density
Lighting power per unit area
CFC’s
Ozone layer depletion don’t use or phase out as a prereq for new buildings - Montreal protocol 1987
Minimum contract length for renewable energy credits
5 years, rec are tradable not carbon offset
Carbon offset
Unit of carbon dioxide avoided or captured to compensate for emissions
Median commissioning payback period
4.8 years
Process energy
Energy used in building operations
EPA energy star portfolio manager
Comparing operating performance with intended - used for entire portfolio of buildings
which domain has most points
energy and atmosphere! ->connection to global warming and energy efficiency
EPA’s Target Finder
helps architects and building owners set aggressive, realistic energy
targets and rate a building design’s estimated energy use.
Buildings account for
36% of total energy use
65% of electricity consumption
30% of greenhouse gas emissions
Right-sizing
Building the correct size for the project, LEED for homes does points adjustment based on square footage
Five natural refrigerants
CO2, Water, Ammonia, Hydrocarbons, Air (lowest ODP and GWP followed by HCFCs)
Water reductions saves energy too
Because of energy to heat, cool, and treat water
Thermal mass
property of the mass of a building that enables it to store heat and provide inertia against temperature fluctuations - higher is better
HVAC uses
30% energy in commercial and 50% in residential
Light bulb efficiency
incandescent < fluorescent < LED
BAS
Building Automation System
MERV
HVAC filter - 8 for construction and 13 for occupancy
ASHRAE 52.2 and 62.1
ventilation
Commissioning
prerequisite for all rating systems - avg building wastes 20% energy
Building level energy metering
also a prereq for LEED, share data with LEED every 5 years
Passive solar and geothermal don’t count
)-: encouraged but no
