Building EQ


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David Eldridge of Grumman / Butkus Associates present the ASHRAE Building Energy Quotient Labeling Program at the 2012 Chicago Energy Modeling Conference.

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  • How do you spell it? It is shown both as “bEQ” and “BeQ”
  • Building Energy Labeling: What's the Point? A building energy labeling program provides information on the potential and actual energy use of buildings.Beyond the benefit received by individual building owners and managers, the increased availability of building data will be a valuable research tool for the building community.Building owners and operators can see how their building compares to peer buildings to establish a measure of their potential for energy performance improvement. Building owners can use the information provided to differentiate their building from others to secure potential buyers or tenants. Potential buyers or tenants can gain insight into the value and potential long-term cost of a building. Operations and maintenance staff can use the results to inform their decisions on maintenance activities and influence building owners and managers to pursue equipment upgrades and demonstrate the return on investment for energy efficiency projects.
  • You can’t change what you can’t measure.Informed decisions by purchasers and renters of property.Differentiation between peer group of high-performing buildings.
  • Current Efforts Related to Labeling• Significant efforts in the international community - European Union, Singapore, Canada and others• U.S. efforts include various rating systems:• EPA ENERGY STAR – Energy rating with baseline IEQ criteria• USGBC LEED – Sustainability rating• GBI Green Globes – Sustainability rating• BOMA 360 – Energy is one of six O&M-focused criteria• State programs– California, New York, DC, Massachusettes• ASHRAE is working with ENERGY STAR, DOE Energy Efficient Building Hub in U.S. and CIBSE internationally
  • EUIAs-Built: Source energy use of actual building design computed using standard occupancy and operational schedules, Site-source conversion based on typical conversion factorsEUIStandard: Representative middle-of-distribution performance
  • Communication scale for bEQOther scales – ENERGY STAR is a statistical scale
  • System EUIs – the need to compare this data is specialized – repeated here
  • The Coleman A. Young Municipal Center is a government office building in Downtown Detroit. The international style, high-rise building was constructed in 1951 and completed in 1954. It is 20 floors high, with one basement floor, for a total of 21. The building is used as a library, a court-house, a county government facility and as a city hall, replacing the now-demolished Detroit City Hall. McCormack:Built in the mid 1970s, the 21-story building is located directly across from Massachusetts State House and houses many state executive branches and state agencies. The building was designed as an open floor office building with minimal enclosed offices and a dedicated main frame information technology system. In addition, it was designed to provide comfort through a municipal steam fed mechanical system. Throughout the years, the building has experienced many changes, including change in the mechanical system, the floor spaces where individual offices and the main frame has been replaced by servers, desktop PCs and printers. City Hall Annex is a 4 story office building encompassing approximately 32,000 square feet. It is a LEED Gold rated building that was gutted and renovated about 6 years ago. The building has a ground source heat pump/forced air system, with no conventional backup. There is also a 26.5 kW solar PV system on the roof. City Hall Annex is located at 344 Broadway in Cambridge, MA.
  • Building EQ

    1. 1. Presentation to:Chicago Energy Modeling Conference February 14, 2012
    2. 2. Why Building Energy Labeling?
    3. 3. Information for Consumers to AllowEducated Choices is Not New Restaurant Sanitation RatingsCar FuelEconomyEstimates Nutrition Facts Label
    4. 4. Building Energy Labels. . .Promote the value of energy efficiency in the marketplace Differentiate buildings with good performance for potential tenants/buyers Enhance building owner’s ability to identify energy efficiency measures to help improve operations
    5. 5. Building Energy Labels. . .Provide clear communication of energy performance to the publicContribute to building performance databases – potential and actual energy use Highlight the drive toward Net Zero Energy Buildings
    6. 6. Current “Building Label” Efforts in the US: – Energy Star – DOE – LEED Certifications – Green Globes – BOMA 360 All of these Programs are Voluntary
    7. 7. Mandatory labeling requirements: – European Union – Canada – California – Washington, DC
    8. 8. Why Should Professionals & Owners Care?• Professionals – An additional service for consulting firms and others – Required certifications demonstrate competency• Owners – Benchmarking – Recognition for participation can enhance a company’s image and reputation – Economic benefit of improving design and operation – Potential for mandatory labeling and related requirements in future
    9. 9. Why ASHRAE?• Over 100 years of experience in the building sciences• Strong technical expertise across all aspects of building design and operation• Historic focus on developing consensus- based, non-commercial documents• Respect and credibility within the building community• Proven history working with DOE and other professional organizations
    10. 10. What is bEQ? • A voluntary certification program • A technical method that draws on successful features of other US and European building certifications • Complements other green building rating systems and energy certification programs • Can be a tool to stimulate adoption of high performance building techniques
    11. 11. Developing bEQ• bEQ Development Committee – International team of experts – Representatives from the Energy Star and EU labeling programs – Building energy modeling experts – Representatives from utilities, government, and advocacy community• Technically sound and widely applicable program• Validate and enhance the program using ASHRAE’s broad technical resource network
    12. 12. Types of Ratings In Operation Rating (Operational)• Actual measured energy use of a building• Based on combination of structure and features of the building and how it is operated• Applicable for existing buildings• Applicable for new buildings after 12-18 months of operation
    13. 13. Types of Ratings In Operation Rating (Operational)• Building characteristics • Design goals (if applicable) • Other certifications • Conditioned area, floors, age, contact • Building HVAC and envelope systems• Energy calculations • Normalized EUI compared to median value • Raw utility usage
    14. 14. Types of Ratings In Operation Rating (Operational)• IEQ certification • Thermal comfort – temperature and humidity, air velocity, temperature asymmetry • Lighting quality – horizontal / vertical fc, ballast types, daylight • Indoor air quality –OA calculations from design / measured rates • Surveys – occupant survey from CBE• Measurements to back up evaluation!
    15. 15. Types of Ratings In Operation Rating (Operational) Energy Use (kWh/ft2-yr)*• Energy end-use breakdown• Metered vs calculated Supply Fans Exhaust/Return Fans 16.2% 3.2% Plug Loads 28.5% Energy Use End Use (kWh/ft2-yr) Supply Fans 3.18 Cooling Exhaust/Return Fans 0.62 Equipment Cooling Equipment 1.62 8.2% Lighting 4.22 Domestic Hot Condenser Water Water Pumping 0.99 0.5% Electric Heat 3.34 Domestic Hot Water 0.09 Electric Heat 17.0% Lighting Plug Loads 5.60 21.5% Total Energy Entered 19.66 Condenser Water Pumping 5.1%
    16. 16. Types of Ratings In Operation Rating (Operational)• Listing of possible energy efficiency measures (EEMs) for the building• ASHRAE Level 1 effort for rigor of evaluation – focus on energy savings, not necessarily cost savings• Source energy comparison
    17. 17. Types of Ratings In Operation Rating (Operational)• Building characteristics• Energy calculations• IEQ certification • Thermal comfort • Lighting quality • Indoor air quality • Surveys • Measurements• Energy end-use breakdown
    18. 18. Types of Ratings As Designed Rating (Asset)• Assessment of the building based on design components: mechanical, envelope, orientation, and lighting.• Based on results of a building energy model• Applicable to both new and existing buildings• Can be used to make choices between potential building designs
    19. 19. Features of bEQ Program:• Potential side-by-side comparison of As Designed (asset) and In Operation (operational) Ratings• Building assessment identifies both peak demand reduction and energy management opportunities• Recognizes energy use from on-site renewables• Includes measurement-based Indoor Environmental Quality (IEQ) indicators to assure levels of service are maintained
    20. 20. Relationship to Other Programs• Europe – Directive 2002/91/EC on the energy performance of buildings – Standard EN 15217 Energy performance of buildings—methods for expressing energy performance and for energy certification of buildings (2007) – Explicit effort to learn from EU experience Austria England & Wales Greece Italy
    21. 21. bEQ and Existing ―Green‖ Programs like LEED or GreenGlobes?• Focuses on a building’s energy use while also ensuring adequate building IEQ• Helps identify opportunities for improving energy performance
    22. 22. bEQ and EPA’s Energy Star Program?• Greater differentiation for high performing buildings• Emphasis on top performers and net zero energy operation.• Required site visit to validate information and IEQ• Applies to all building types• Measures IEQ performance• Expanded information provided for how to improve energy performance
    23. 23. Visible Products of bEQThe Label: • Most visible component of the program • Simple to understand – targets general public • Suitable for display in building lobbies and marketing materials • Satisfies public disclosure requirements at the state and local level
    24. 24. Visible Products of bEQThe Certificate: Detailed Technical information that includes: • Energy saving features • Emissions • IEQ compliance • History of operational ratings
    25. 25. Visible Products of bEQ• bEQ is normalized Energy Use Intensity – Energy per unit area – Measured for the operational rating – Modeled for the asset rating – Represented as % Value – Smaller number is better – percent of median
    26. 26. Visible Products of bEQThe Certificate: Detailed Technical information that includes: • Energy saving features • Emissions • IEQ compliance • History of operational ratings
    27. 27. Visible Products of bEQThe Certificate: Detailed Technical information that includes: • Energy saving features • Emissions • IEQ compliance • History of operational ratings
    28. 28. Visible Products of bEQThe Certificate: Detailed Technical information that includes: • Energy saving features • Emissions • IEQ compliance • History of operational ratings
    29. 29. How Does The Rating Scale Work? Technical potential scales can rate performance that falls outside the current distribution, like net zero or net positive buildings
    30. 30. Communication – bEQ Scales
    31. 31. Operational Rating for MinimumENERGY STAR
    32. 32. Operational Rating for MinimumENERGY STAR Most good buildings will get a grade of ―B‖
    33. 33. bEQ and Professional Certification Building Certification Requires Certified Professionals• In Operation rating – Building Energy Assessment Professional (BEAP)• As Designed rating – Building Energy Modeling Professional (BEMP)• ASHRAE Certification information web page
    34. 34. Building Energy Assessment Professional• Certify ability to audit and analyze residential, commercial, and industrial buildings, including: • determining project scope • collecting data • analyzing building performance • interpreting results • evaluating alternatives • recommending energy conservation • measures • assisting with ECM implementation• ~100 certified since start of program in Feb. 2011• Certificants from US, Argentina, Puerto Rico
    35. 35. Building Energy Modeling Professional• Certify ability to: • Evaluate, choose, use and calibrate interpret the results of energy modeling software when applied to building and systems energy performance and economics for new and existing buildings• ~200 certified since start of program in 2010• Certificants from US, Brazil, Canada, India, Irelan d, Turkey, Brazil
    36. 36. Timeline for bEQ
    37. 37. About the Operational Pilot Participation of Prominent Building Owners/DevelopersParticipants:
    38. 38. What Tools?Portable Equipment: • Temperature, humidity, CO2, velocity, airflowUtility usage data – spreadsheets!Monitored energy end-use from meters/BASStandard Forms! • Complete the standard forms (coming soon…) • Components of a Level 1 Assessment • Monitored energy end-use
    39. 39. Energy Modelers Report for DutyThe Asset Rating: • An evaluation of the ―As-Designed‖ efficiency • Can be applied to new and existing buildings • Common set of assumptions – COMNET, Appendix G • Suitable for display in building lobbies and marketing materials • What is level of effort?
    40. 40. Energy Modelers Report for DutyThe Asset Rating: • Current status – two pilot buildings • Each being assessed by three BEMP consultants • Will assessments agree? • One of these is ASHRAE HQ • LEED Platinum, advanced IAQ systems
    41. 41. For More Information:• Visit the ASHRAE bEQ web site:• Illinois ASHRAE Chapter Members David Eldridge – Benny Skelton –• Contact ASHRAE staff: Lilas Pratt – Manager, Special Projects Phone: 678-539-1193 Email:• ASHRAE bEQ Committee Chair, 2011-12 Thomas Phoenix Phone: 336-373-9800 Email:
    42. 42. Questions?
    43. 43. Level of Effort for bEQ • Estimated at roughly 35 to 40 hours • Not intended to be a cursory review
    44. 44. Case Study: Durst OrganizationOne Bryant Park, New York, NY 1155 Avenue of the Americas, New York, NY 4 Times Square, New York, NY
    45. 45. Case Study: Durst OrganizationOne Bryant Park, New York, NY 1155 Avenue of the Americas, New York, NY 4 Times Square, New York, NY
    46. 46. Case Study: Public Buildings Coleman A. Young Municipal Center, Detroit, MI John W. McCormack, State Building, Boston, Ma. Plymouth Trial Court, Plymouth, Ma.City Hall Annex, Cambridge, MA.
    47. 47. Case Study: Research Buildings Sarofim Research Building, University of Texas Health Science Center, Houston, TXOmega Center for SustainableLiving, Rhinebeck, NY
    48. 48. Case Study: Research Buildings IRS Kansas City Service Center, Kansas City, MO
    49. 49. Recipients Database Access Recipients Database Label Recipients - COMING SOON
    50. 50. Recipients Database
    51. 51. Next Steps for ASRHAE bEQThe Asset Rating: • Current status – two pilot buildings • Each being assessed by three BEMP consultants • Will assessments agree? • Does modeling produce EUIs in-line with operational rating?Operational Rating • Develop marketing plan • Issue forms to public • Additional normalizations for building types