Presentation on theme: "Certified Green Buildings: Why and How"— Presentation transcript:
1 Certified Green Buildings: Why and How Kristin Heinemeier, Ph.D, P.E.Technical DirectorBrooks Energy and Sustainability Lab
2 What is “Sustainability”? “We are not inheriting this world from our parents, we are borrowing it from our children.”Will we leave our children more than our parents left us?
3 Impact of Buildings 1/3 of energy use, 2/3 of electricity 12% of fresh water supplies88% of potable water supplies40% of raw materials1/3 of municipal solid waste36% of anthropogenic CO246% of SO2, 19% of NOx20% of US EconomyPlus…health effects on occupantsmanufacturing of bldg components, appliances, paper, computers, …transportation to and from bldgs: auto manufacturing, oil (foreign policy?), pollution, land use (streets, highways, parking lots, gas stations…)
5 What are bldg professionals to do? Question: Are we part of the problem or part of the solution?Answer: More and more, the latter.
6 Bldg Sustainability Considerations Energy efficiencyWater efficiencyIndoor environmental qualityRecyclingLocal or recycled building materialsConstruction processesLandscapingTransportation
7 Costs and Financial Benefits Report to California Sustainable Building Task Force, 10/03Study of 33 Sustainable buildingsabout $4/sqft premium in cost, mostly due to increased A/E costs for integrationNet Present Value significantly higher:Energy: $6/sqftEmissions: $1/sqftO&M: $8/sqftProductivity and Health: $37/sqftCost Premium: ($4/sqft)Total NPV: $49/sqft
8 Need for a Rating System To assist in specifying sustainabilityTo provide a guide for designing and assessing buildingsTo recognize those who build sustainable buildingsTo avoid “greenwashing”To educate building owners and the industry
9 Leadership in Energy & Environmental Design (LEED) Developed by the U.S. Green Building Council (a non-profit coalition of individuals, businesses, and other organizations representing the building industry)Consensus-based Point SystemCertified, Silver, Gold, PlatinumSelf-AssessingNo “LEED Police”, no inspectionsHigh production-value documentationSome calculations, modeling, plans, certification
10 LEED Family of Products New Construction and Major Renovation (v 2.1)Existing Buildings (pilot)Core and Shell (pilot)Commercial Interiors (pilot)Homes (in progress)Multiple Buildings (in progress)Lab Buildings (in progress)
11 Status of LEED Rating System To date126 Total Certified Projects1534 Total Registered Projects50 States with Projects12 Countries with Projects187,364,398 Gross Square Feet of ProjectsAs of last October51 certified~500 registered
12 Status of LEED in Texas5 certified59 registered (6.6M sqft)
13 Five Categories in the Rating Indoor Environmental QualityWater EfficiencySustainable SitesMaterials and ResourcesEnergy and Atmosphere
19 Energy & Atmosphere Prerequisites: Credits: Fundamental Building Systems CommissioningMinimum Energy PerformanceCFC Reduction in HVAC&R EquipmentCredits:Optimize Energy PerformanceRenewable EnergyAdditional CommissioningOzone DepletionMeasurement & VerificationGreen Power
20 the Role of HVAC&R Professionals Energy and Atmosphere CreditsEnergy efficient designCertification of compliance with energy codes (ASHRAE Std. 90)Energy modelingMeasurement and VerificationCommissioningRefrigerantsRenewable EnergyIndoor AirCO2 MonitoringVentilation EffectivenessConsulting, Research, PolicyEducation of Owners
21 Local Organizations Metropolitan Partnership for Energy USGBC USGBCMeets irregularlyAssociation of Energy EngineersMeets 4th Tuesday at lunch in San MarcosWorld Energy Engineering Congress in Austin, Sept 22-24ASHRAEMeets 3rd Tuesday in San AntonioSan Antonio Women Energy AssociatesMeets 1st Thursday at lunch in Alamo Heights