phoenix convention center phoenix, arizona goal setting and performance based contracting track 7:...
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Phoenix Convention Center • Phoenix, Arizona
Goal Setting and Performance Based Contracting
Track 7: Building Performance
Session 5: Constructing High Performance New Buildings
Paul A. Torcellini, Ph.D., P.E.National Renewable Energy Laboratory
August 12, 2015
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Energy Exchange: Federal Sustainability for the Next Decade2
Goal Setting and Performance Based ContractingPresenter: Paul Torcellini, NRELDescription: Learn to set goals in constructing high performance new buildings and how to maximize the use of performance based contracts to achieve those goals Implementation Lessons and ResultsPresenter: Shanti Pless, NREL Description: Review lessons learned and results in implementation of practices to best help guarantee building performance. A View from a ContractorPresenter: Phil Macey, JE Dunn Construction Description: Develop an understanding from the contractor’s perspective in understanding the process in designing and constructing high performance new buildings.
Session Overview
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Energy Exchange: Federal Sustainability for the Next Decade3
Learning Objectives
• Understanding how to set goals in constructing high performance new buildings and how to maximize the use of performance based contracts to achieve those goals.
• Understanding the process in designing and constructing high performance new buildings and the tools and resources available to help you along the way.
• Reviewing lessons learned and results in implementation of practices to best help guarantee building performance.
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Energy Exchange: Federal Sustainability for the Next Decade
• FEMP is accredited by the International Association for Continuing Education & Training and has awarded 0.2 CEUs (60 Min = 0.1 CEUs, 90 Min = 0.2 CEUs) for this session.
• To earn CEUs and a certificate of completion, participants must:– attend the session– complete a short assessment (3-5 questions) and brief
evaluation by logging on to: http://www.wbdg.org/education/energyexchange2015.php
• Note: participants must register once with the National Institute of Building Sciences’ Whole Building Design Guide (WBDG.org) to complete the requirements and obtain their certificate.
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Obtaining CEUs and Certificates
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• RSF uses 50% less energy than if it were built to current commercial codes at no extra capital cost
• RSF increases space at NREL by 60% but only increases energy use by 6%
NREL/17833
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Energy Exchange: Federal Sustainability for the Next Decade
Many Pieces
• So many ways to assemble the pieces
• Design is about making decisions – need motivation to make the right decisions
• Who are the decision makers?
Used by permission: Paul Torcellini/NREL
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Great Potential in Commercial Buildings
Clockwise from top: NREL/09202, 10884, 10140, 09249, 12637, 11097
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Energy Exchange: Federal Sustainability for the Next Decade8
Vision
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Setting Goals
• Measurable goals are better• From bad to good…
– I want a green building– Design a LEED <rating> building– Design a building to use 30% less energy than
ASHRAE 90.1-2013– Design a building to use less than 25,000 BTU/sqft– Design a [NET] ZERO ENERGY BUILDING
• Influencing purchasing decision—the owner
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What are Zero Energy Buildings?
•Conceptually, a building that has no adverse energy [or environmental] impact [because of its operation]•ZERO is not easy to define!•Not easy to design to if not well defined
– Disconnect all utility interfaces?– What is the energy performance metric?– Net energy transfer across boundary?– Where is the boundary?
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Goal
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Goal
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Goal
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Goal
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Goal
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III
III IV
Value Added
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Creating Goal Based Solutions
• Set measurable goals early (before you hire anyone).– Where to find goals
• Your portfolio and past experiences• Percentage off industry averages• Target finder• Examples from others (or just slightly better)
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Set Goal Tiers
• 35 kBtu/sqft• 25 kBtu/sqft• 0 kBtu/sqft• -5 kBtu/sqft• Let the market compete on what goals you
should have for the amount of money you are willing to spend.
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Problem Definition: RFP Objectives
MISSION CRITICALAttain safe work performance/Safe Design PracticesLEED PlatinumEnergy Star “Plus”
HIGHLY DESIRABLE800 staff Capacity25kBTU/sf/yearArchitectural integrityHonor future staff needsMeasurable ASHRAE 90.1Support culture and amenitiesExpandable buildingErgonomicsFlexible workspaceSupport future technologiesDocumentation to produce a “How to” manual“PR” campaign implemented in real-timeAllow secure collaboration with outsidersBuilding information modelingSubstantial Completion by 2010
IF POSSIBLENet Zero/design approachMost energy efficient building in the worldLEED Platinum PlusASHRAE 90.1 + 50%Visual displays of current energy efficiencySupport public toursAchieve national and global recognition and awardsSupport personnel turnover
RFP also required maximum use of natural ventilation and 90% of floor space fully daylit
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The Process
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• Owner made tough decisions up-front• Set budget• Sought maximum value for that budget• Prioritized goals
• Design-Build procurement process• Managed the team to the RFP and its
substantiation criteria• Rewards
• Allowed design-build team to use creativity to maximize value--innovation
• Owner did not solve the problem (but knew the solution existed)
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Owner Role• Spend the time to get RFP right
• Design/build team will study to pass the test• Set up acquisition process to “force”
integrated design• Energy modeling guides conceptual design
decisions• Architecture and envelope
are also efficiency measures
NREL/17833
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Owner Role
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• Unwavering commitment to problem statement• Unleash power of design/build team of experts to
meet your needs • true value engineering
• Commit to your objectives and the prioritization and don’t adjust
Clockwise from top: NREL/18784, 24690, 17823
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Steps…
• RFQ: Short list to 3 teams• Pay for conceptual design (share the risk)• Select best value for fixed price• Incentives• Require substantiation
NREL/21806
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Day vs. Night Plug and Process Loads
Annual Plug Load Energy Use Intensity (kBtu/ft2)
Unoccupied Hours Power Density (W/ft2)0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50
Occupied
Hours Power Density (W/ft2)
0.10 3.0 5.2 7.4 9.7 11.9 14.1 16.3 18.6 20.8 23.0 25.2 27.4 29.7 31.9 34.10.20 3.8 6.0 8.2 10.4 12.7 14.9 17.1 19.3 21.5 23.8 26.0 28.2 30.4 32.7 34.90.30 4.5 6.8 9.0 11.2 13.4 15.6 17.9 20.1 22.3 24.5 26.8 29.0 31.2 33.4 35.60.40 5.3 7.5 9.7 12.0 14.2 16.4 18.6 20.9 23.1 25.3 27.5 29.7 32.0 34.2 36.40.50 6.1 8.3 10.5 12.7 15.0 17.2 19.4 21.6 23.8 26.1 28.3 30.5 32.7 35.0 37.20.60 6.8 9.1 11.3 13.5 15.7 17.9 20.2 22.4 24.6 26.8 29.1 31.3 33.5 35.7 38.00.70 7.6 9.8 12.0 14.3 16.5 18.7 20.9 23.2 25.4 27.6 29.8 32.1 34.3 36.5 38.70.80 8.4 10.6 12.8 15.0 17.3 19.5 21.7 23.9 26.2 28.4 30.6 32.8 35.0 37.3 39.50.90 9.1 11.4 13.6 15.8 18.0 20.3 22.5 24.7 26.9 29.1 31.4 33.6 35.8 38.0 40.31.00 9.9 12.1 14.4 16.6 18.8 21.0 23.2 25.5 27.7 29.9 32.1 34.4 36.6 38.8 41.01.10 10.7 12.9 15.1 17.3 19.6 21.8 24.0 26.2 28.5 30.7 32.9 35.1 37.3 39.6 41.81.20 11.4 13.7 15.9 18.1 20.3 22.6 24.8 27.0 29.2 31.4 33.7 35.9 38.1 40.3 42.61.30 12.2 14.4 16.7 18.9 21.1 23.3 25.5 27.8 30.0 32.2 34.4 36.7 38.9 41.1 43.31.40 13.0 15.2 17.4 19.6 21.9 24.1 26.3 28.5 30.8 33.0 35.2 37.4 39.7 41.9 44.11.50 13.7 16.0 18.2 20.4 22.6 24.9 27.1 29.3 31.5 33.8 36.0 38.2 40.4 42.6 44.9
Only occupied about ⅓ of the time-Nights Unoccupied-Weekends Unoccupied-Holidays Unoccupied
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Energy Exchange: Federal Sustainability for the Next Decade
Plug Loads
• 4 Quads—20% of commercial building energy use • Office equipment is 7% of total
electrical use• Very diverse and diffuse making
them hard to manage and control• Evaluated current plug loads• Developed a process to reduce
– Unused equipment– Space conditioning– Lighting needs
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Resources
• Buildingdata.energy.gov/cbrd• https://buildingdata.energy.gov/cbrd/energy_b
ased_acquisition/
• Case Studies• Annotated RFPs.• Search on Plug Loads
– https://buildingdata.energy.gov/cbrd/resource/1550• www.nrel.gov/rsf
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Moving to the Mainstream…
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• Assistance available to implement process• Works for any owner willing to set goals early
and prioritize needs• Fix the budget upfront• Competitively procure for meeting prioritized
needs
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Energy Exchange: Federal Sustainability for the Next Decade
Accelerate Performance
• Need to unleash the creativity of design and construction professionals
• Incentivize the process, not the products• We can create zero energy buildings today at
little or no incremental cost