LEED Flash Cards Deck 2
Reductions in potable water consumption from water efficient landscaping are attributed to what techniques?
Choosing the correct plant species, density and microclimate factors, Irrigation efficiency, use of captured rainwater, use of recycled wastewater, use of water treated and conveyed by a public agency specifically for nonpotable uses or absolutely no potable water use.
Who would be included in determining your FTE population?
Identify the total number of full-time and part-time occupants. In building with multiple shifts, use only the highest-volume shift in the FTE calculation.
What are some ways to capture stormwater to
prevent runoff?
Rain gardens, Green roofs, Retention pond, Bioretention pond
What factors are used to establish a baseline water demand when calculating for water efficiency in commercial or residential applications?
Calculations are based on estimated occupancy usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves.
In LEED Water Efficiency addresses what environmental concerns for building use and disposal?
Monitoring water consumption performance, reduction in indoor potable water consumption, reduction in water consumption to save energy and improve environmental well-being, and practice water-efficient landscaping.
PROCESS WATER is used for what purpose?
Process water is used for industrial processes such as cooling towers, boilers, and chillers. The term can also refer to water used in operational processes, such as dishwashing, clothes washing, and ice making.
What is an AQUIFER?
An aquifer is an underground water-bearing rock formation or group of formations that supply groundwater, wells, or springs.
Low-flow fixtures use less water than what standard?
EPAct 1992
What are some examples of applications that use AUTOMATIC FIXTURE SENSORS?
Lavatories, sinks, water closets, and urinals.
Wastewater from toilets is what type of water?
Blackwater
Wastewater from kitchen sinks is what type of water?
Blackwater
Wastewater from faucets is what type of water?
Graywater
What is WaterSense?
WaterSense is a partnership program sponsored the EPA, helping consumers identify water-efficient products and programs.
What type of water is DRINKING WATER?
Potable water
What are adaptive plants?
Non-nativeplantsthatuselessfertilizer,pesticidesand water in a given landscape. These plants have adapted to the local climate and are not considered invasive plants or weeds.
What is irrigation efficiency?
Thepercentageofwaterdeliveredbyirrigationequipment that is actually used for irrigation and does not evaporate, blow away, or fall on hardscape. (USGBC). Drip irrigation has an efficiency of 90% while conventional overhead sprinklers have an efficiency of 65%.
What is the baseline flow rate of a faucet?
2.2 gpm (gallons per minute)
What is the baseline flush rate of a urinal?
1.0 gpf (gallons per flush)
What is the baseline flush rate of a water closet?
1.6 gpf (gallons per flush)
How much water does a waterless urinal consume?
None
What type of water is municipally supplied reclaimed/recycled water?
Nonpotable water
The water use of a faucet is measured using what units?
Gallons per Minute (gpm)
The water use of a water closet is measured in what units?
Gallons per Flush (gpf)
What are the benefits of NATIVE PLANTS?
Native plants require less water, less maintenance, less fertilizer, and are more pest resistant.
What is RECLAIMED WATER?
Reclaimed water is water that has been treated for reuse.
What types of plants does LEED recommended using in landscape design?
Native and/or adaptive plants.
What is CONVENTIONAL IRRIGATION?
Conventional irrigation is watering using above-ground sprinkler heads.
What is an ECOSYSTEM?
A collection of living things and the environment in which they live. For example, a prairie ecosystem includes coyotes, rabbits , streams, and grasses among many other living things.
What is HARVESTED RAINWATER?
Harvested rainwater is rainwater that has been collected for uses such as landscaping irrigation, toilet flushing, or other non-potable water uses.
What are some types of flow fixtures?
Shower+head, Spray valve, Lavatory faucet
What are some types of flushing fixtures?
Urinal, Water closet (toilet)
What are the most efficient types of flushing fixtures?
Waterless urinals, Composting toilets
What is the baseline water demand of a building?
The estimated occupant usage of a project’s fixtures and fittings using the flush and flow rates from the EPAct 1992 standard
What standard is used to determine the baseline water demand of a building?
EPAct 1992
What minimum water savings are LEED v3 projects required to achieve?
20%
What standard defines green power?
Green-e
What are HCs?
Hydrocarbons - natural refrigerants such as propane, butane, ethane, isobutene, and isopentane.
What are CFCs?
CFC stands for Chlorofluorocarbon. This is a type of hydrocarbon that is used in most types of refrigerants for building applications such as centrifugal chillers, refrigerators, and humidifiers. Most applications were installed prior to ozone concerns and they are currently being phased out by the Montreal Protocol.
What are HCFCs?
the stratospheric ozone layer. These are us in refrigerants that are being phased out with the signing of the Montreal Protocol and due to their ODP (ozone depletion potential). Though HCFCs deplete the ozone layer, they are more efficient than some more ozone neutral counterparts.
What are HALONS?
Halons are a group of chemical compounds used in fire suppression systems and fire extinguishers that contribute to ozone depletion.
What types of systems use CFCs?
Centrifugal chillers, -Refrigerators, -Humidifiers
What is an HFC?
Hydro fluorocarbons which are refrigerants that do not deplete the stratospheric ozone layer but may have high global warming potential. HFCs are not considered environmentally benign.
What are alternatives to using refrigeration with CFCs?
Natural ventilation, Refrigerants with lower ODP and GWP, Natural refrigerants
What does GWP stand for?
Global Warming Potential
What is lighting power density?
Installed lighting power per unit area
Where does lighting power density apply to LEED projects?
Energy and Atmosphere (EA). Reducing the lighting power density reduces energy use.
What does ODP stand for?
Ozone Depletion Potential
What is PHOTOVOLTAIC (PV) energy?
Electricity from photovoltaic cells that convert the energy in sunlight into electricity.
What is a BASELINE BUILDING PERFORMANCE?
ASHRAE 90.1-2007, Appendix G. defines minimum standards of design. A building’s baseline building performance would be the annual energy cost for a building designed to those minimum standards.
What is natural ventilation?
Natural ventilation uses the natural forces of wind and buoyancy to deliver fresh air into buildings.
What is daylighting?
The practice of placing windows, or other transparent media, and reflective surfaces so that, during the day, natural light provides effective internal illumination.
What standard applies to natural ventilation?
ASHRAE 62.1-2007
Ammonia is what type of refrigerant?
A natural refrigerant
CO2 is what type of refrigerant?
A natural refrigerant
What type of impact do HFCs have on the ozone layer?
HFCs have a low impact on the ozone layer but many HFCs have a high Global Warming Potential (GWP)
What is free energy?
Energy with low/no-cost that comes as a result of building design. Examples include daylighting, natural ventilation, or onsite solar power/wind energy.
What is BIOMASS?
Biomass is plant material from trees, grasses, or crops that can be converted to heat energy to produce electricity.
What is BIOFUEL?
A biofuel is a solid, liquid or gaseous fuel derived from relatively recently dead biological material and is distinguished from fossil fuels which are derived from long dead biological material.
What is Global Warming Potential as it relates to refrigerants?
A measurement of how much effect the given refrigerant will have on global warming in relation to carbon dioxide, where CO2 has a GWP of 1. This is usually measured over a 100-year period. In this case the lower the value of GWP the better the refrigerant is for the environment.
What is Ozone Depletion Potential as it relates to refrigerants?
The potential for a single molecule of the refrigerant to destroy the Ozone Layer. The less the value of the ODP the better the refrigerant is for the ozone layer and therefore the environment.
Is it better for a refrigerant to have a higher or lower ODP and GWP?
Lower
What is fundamental refrigerant management?
A minimum threshold for refrigerant selection. LEED requires zero use of CFC-based refrigerants in new based building HVAC&R systems.
What is the intent of fundamental refrigeration management?
To reduce stratospheric ozone depletion
Are LEED projects allowed to use Halons in the building?
Yes. Projects can earn points for not using Halons in fire suppression systems.
GREEN POWER is synonymous with what term?
Renewable energy
What is the Montreal Protocol?
An international treaty designed to protect the ozone layer by phasing out the production of a number of substances
believed to be responsible for ozone depletion.
What refrigerants do not impact the ozone layer?
Natural refrigerants such as CO2, NH3, and Propane
What variables measure a refrigerants impact on the environment?
Global Warming Potential (GWP) and Ozone Depletion Potential (ODP)
What was the goal of the MONTREAL PROTOCOL?
To phase out CFCs and HCFCs in refrigerants for new and existing equipment.
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What year does the Montreal Protocol phase out HCFCs?
Most CFC use and production was phased out in 1995, while some other substances and derivatives will be phased out in 2010, and the less active HCFCs will be phased out in 2030.
What is the primary concern in the Clean Air Act, Title VI, Rule 608?
To reduce annual leakage of ozone-depleting refrigerants such as CFCs and HCFCs.
What are some types of NATURAL REFRIGERANTS?
- Carbon dioxide (CO2)
- Ammonia (NH3)
- Propane
- Air
- Water
- Hydrocarbons (HC)
Under the Montreal Protocol what year must developing countries who signed the protocol stop producing CFCs?
2010
What standard established regulations on using and recycling ozone-depleting compounds?
U.S. EPA Clean Air Act. This act defines the leakage rate as it applies to appliances that have refrigerants.
What does a PHASE-OUT plan pertain to?
Eliminating CFC-based refrigerants and converting them to less environmentally harmful refrigerants.
What does air pollution cause?
Harm or discomfort to humans or other living organisms, or damages the natural environment into the atmosphere.
What is a LIFE-CYCLE COST Analysis?
Life-cyclecostanalysiscalculatesexpectedfuture operating, maintenance, and replacement costs of designs and features used to assist owners in developing a realistic design and budget estimate.
What is NET METERING?
Itisameteringandbillingarrangementthatallowson-site generators to send excess electricity flows to the regional power grid; these flows offset a portion of the energy drawn from the grid. An example would be a company that generates solar power for its building. If it generates excess electricity, it can sell this to the local power company.
What does the U.S. EPA Clean Air Act, Title VI, Section 608 relate to?
Under the EPA Clean Air Act the EPA has established regulations on using and recycling ozone-depleting compounds.
BIOMASS is a form of what type of energy?
Renewable energy