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Green Building Design and Construction LEEDv3.0

Energy and Atmosphere v3.0 Tonight's topics. Discuss each credit in EA category3 prerequisitesPossible pointsNC 35 pointsSchools 32 pointsC

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Green Building Design and Construction LEEDv3.0

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    1. Green Building Design and Construction – LEEDv3.0 For Design Construction and Major Renovations of Commercial and Institutional Buildings including Core & Shell and K-12 School Projects ENERGY & ATMOSPHERE Presented by: Patricia King – Scott McKenzie

    2. Energy and Atmosphere v3.0 Tonight’s topics Discuss each credit in EA category 3 prerequisites Possible points NC – 35 points Schools – 32 points C&S – 33 points Review the intent and requirements Include: synergies with other categories list the responsible party Regional priority credits – if applicable Practice test questions Review case study Summary

    3. EA Prerequisite 1: Fundamental Cx of Building Energy Systems Intent Verify that the buildings energy related systems are installed, calibrated and perform according to the owner’s project requirements (OPR), basis of design (BOD), and construction documents (CD). Benefits of Cx Reduced energy use, lower operating costs, contractor callback, better building documentation, improved occupant productivity and verification that the system performs well - Effects on-going O&M Systems may include; 1. HVAC&R system with associated controls 2. Lighting and daylighting controls 3. Domestic hot water systems 4. Renewable energy systems – wind, solar, etc.

    4. EA Prerequisite 1: Fundamental Cx of Building Energy Systems What is Cx? – Quality Control Verification of OPR/BOD/CD What is Enhanced Cx? – EA credit 3 (2 points) LEED manual page 220 – 221 Project Phases Fundamental vs Enhanced CxA Qualifications LEED manual page 230 - review chart

    5. EA Prerequisite 2: Minimum Energy Performance Intent Establish the minimum level of energy efficiency for the proposed building and system. Requirements Schools – EPA’s target finder rating tool NC, Schools, CS – Establish a 10% improvement for NC and a 5% improvement for major renovations compared to baseline building and comply with ASHRAE 90.1-2007 EA credit 1 –optimizing (max points - up to 19 - 21)

    6. EA Prerequisite 3: Fundamental Refrigerant Management Intent Reduce Stratospheric Ozone Depletion Requirements Zero use of CFC-based refrigerants LEED Manual – page 253 (Related - EA Credit 4 – Enhanced Refrigerant Mgmt)

    8. EA Credit 1: Optimize Energy Performance NC, Schools 1-19 points, CS 1-21 points Intent Achieve increasing levels of energy performance above the baseline in the prerequisite standard to reduce environmental and economic impacts associated with excessive energy use.

    9. EA Credit 1: Optimize Energy Performance Focus Buildings consume 39% of all energy and 75% of all electricity produced in the United States Result 50% of the points required to get certified are available in this category (integrated approach will be required)

    10. EA Credit 1: Optimize Energy Performance Requirements Select 1 of 3 compliance paths and If documenting these points, it is assumed EA Prerequisite 2 has been met

    11. EA Credit 1: Optimize Energy Performance Option 1 – Whole Building Energy Simulation (1-19 or 21 points) Option 2 – Comply with prescriptive ASHRAE Advanced Energy Design Guide (1 point) Option 3 – Comply with prescriptive New Buildings Institute - Advanced Building Core Performance Guide (1-3 point)

    12. EA Credit 1: Optimize Energy Performance Perspective Energy Usage Quotient – BTU/sqft per yr Baseline – Median building stock – 100% (Commercial/Retail Bldg 85,000 to 100,000 Btu/sqft per year) ASHRAE 90.1 – 1999 Target - 90% of baseline – LEED 2.1 ASHRAE 90.1 – 2004 Target - 80% of baseline – LEED 2.2 ASHRAE 90.1 – 2007 Target - 72% of baseline – LEED 3.0 ASHRAE 90.1 – 2010 Target - 60% of baseline . . . . ASHRAE 90.1 – 2030 Target - 0% of baseline

    13. EA Credit 1: Optimize Energy Performance (1-21 points)

    14. EA Credit 1: Optimize Energy Performance (1-21 points) Points available for energy usage reduction below the baseline

    15. EA Credit 1: Optimize Energy Performance (1-21 points) Can I simulate a bad baseline building and get lots of points?

    16. EA Credit 1: Optimize Energy Performance (1-21 points) Baseline

    17. Hourly Load Analysis

    18. EA Credit 1: Optimize Energy Performance

    19. EA Credit 1: Optimize Energy Performance

    20. EA Credit 1: Optimize Energy Performance

    21. EA Credit 1: Optimize Energy Performance

    22. EA Credit 1: Optimize Energy Performance

    23. EA Credit 1: Optimize Energy Performance

    24. EA Credit 1: Optimize Energy Performance

    26. EA Credit 1: Optimize Energy Performance (1-21 points) Option 2 – Prescriptive Compliance Path (1 point) Comply with the prescriptive measures of the ASHRAE Advanced Energy Design Guide Small office buildings (<20,000 sqft) - 2004 Small retail (<20,000 sqft) – 2006 Warehouse (<50,000 sqft) – 2008 K-12 Schools (<200,000 sqft) - 2008 Design by climate zone Prescription for saving 30% energy over ASHRAE 90.1 -1999

    27. EA Credit 1: Optimize Energy Performance (1-21 points) Option 3 – Prescriptive Compliance Path: Advanced Buildings Core Performance Guide (ABCP) by the New Buildings Institute. (1 - 3 points) Building < 100,000 sqft Not applicable for Health Care, Warehouses or Laboratories Must fully comply with section 1 and 2 of the ABCP standard – 1 Point – reference page 265 for topics Additional points (2) are available for also implementing the recommendations of section 3 of the ABCP guide (1 point per 3 strategies used with some exceptions) see page 259

    28. EA Credit 2: On-site Renewable Energy (1-7 points – NC / Schools) (4 points Core and Shell) Intent Encourage and recognize increasing levels of on-site renewable energy self-supply in order to reduce environmental and economic impacts associated with fossil fuel energy use.

    29. EA Credit 2: On-site Renewable Energy (1-7 points) Requirements Use on-site renewable energy systems to offset building energy costs. Calculate project performance by expressing the energy produced by the renewable systems as a % of building annual energy cost. % level of renewable energy determines number of points. (1%=1, 3%=2, 5%=3,… 13%=7) Plus one exceptional point for 15%. See pg 289. Compare annual energy cost to model calculation or the DOE – CBECS database (use lowest) to determine %.

    30. EA Credit 2: On-site Renewable Energy (1-7 points) Potential Systems PV Wind Solar Thermal Bio-fuel powered electric (some fuel exceptions – see page 292) Geothermal heating or electric generating (lava) Hydro-generated power Wave and Tidal systems

    31. EA Credit 2: On-site Renewable Energy (1-3 points) Systems that do not receive credit Architectural features to save energy Passive solar Day-lighting Geo-exchange (ground source) Purchased green power

    32. EA Credit 2: On-site Renewable Energy (1-7 points) Selling power at a premium does not allow offsetting costs with the net earned dollars.

    33. EA Credit 3: Enhanced Commissioning (2 points) Intent To begin the commissioning process early during the design process and execute additional activities after systems performance verification in completed. Related credits – page 300 (218) Refer back to page 220 for discussion

    34. EA Credit 4: Enhanced Refrigerant Management (NC/CS 2 points, Schools 1 point) Intent Reduce ozone depletion and support early compliance with the Montreal Protocol while minimizing direct contribution to global warming. Montreal Protocol – all non-zero ODP’s gone by 2030

    35. EA Credit 4: Enhanced Refrigerant Management Requirements Option 1 – Do not use refrigerants. Option 2 – Select equipment that minimizes quantity Global warming compounds. See chart on page 310. LCGWP + LCODP x 105 < 100 (page 305) * Units with .5lbs of refrigerant or less are exempt

    37. EA Credit 4: Enhanced Refrigerant Management (1 point) Requirements And – In addition to both requirements above. Do not install fire suppression systems that contain ozone depleting substances such as CFCs, HCFCs or Halons.

    38. EA Credit 5 and 5.1 Measurement and Verification NC – 3 points, Schools – 2 points, CS – 3 points Intent Provide for the on-going accountability of building energy consumption use over time. Requirement Develop and implement a M&V plan and it shall cover a period of no less than one year of post- construction occupancy.

    39. EA Credit 5 and 5.1 Measurement and Verification Two optional measurement and verification plans: Calibrated Simulation Plan- whole building Energy Conservation Measure Isolation – isolated systems; HVAC, lighting, etc. Per International Performance Measurement and Verification Protocol guidelines. Pg 315

    40. EA Credit 5.2 Measurement and Verification CS- 3 points Automatic centrally monitored system capable of tenant sub-metering. Designed to enable a tenant to earn EA credit 3 in LEED for commercial interiors.

    41. EA Credit 6: Green Power (2 points) Intent Encourage the development and use of grid-source, renewable energy technologies on a net zero pollution basis. Requirement Engage in a 2-year contract that provides at least 35% of the buildings electricity from renewable sources Additional Requirements – Schools - can be purchased on a centralized basis and be allocated to a specific project CS – electricity usage of C&S sqft by BOMA standards

    42. EA Credit 6: Green Power (2 points) Three approaches to earning the credit 1. States with open electricity market – Green-e-certified provider - contract for 2 years 35% of consumption 2. States with closed market – the governing utility has a Green-e-certified provider 3. If not 1 and 2 – Renewable Energy Credits (REC) can be purchased thru a Green-e-certified provider. (Simple calculation – page LEED manual 328 – 329)

    43. Case study – Camdelle court

    44. Sample questions

    45. Sample questions Which two of the following are appropriate statements with regard to commissioning in the context of green building and E/A Prerequisite 1, Fundamental Commissioning of the Building Energy Systems? To be effective, the commissioning authority should be a principal member of the design team that is directly responsible for the project design or construction management. To be effective, the commissioning authority should be independent from those individuals that are directly responsible for project design or construction management (preferably from a separate firm). The commissioning authority is responsible for verifying the performance of building systems and equipment prior to installation.

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