Presentation Transcript

1. Greening Public Health at The George Washington University Washington, DC Speakers: NANCY GIAMMATTEO, AIA, –GWU SCOTT SPANGENBERG, PE, LEED – AEI BRENDON BURLEY, PhD – AEI SONG ZHANG, PhD, PE, LEED AP – AEI KEY DESIGN & CONSTRUCTION TEAM - PAYETTE /AYERS SAINT GROSS AFFILIATED ENGINEERS PALADINO TADJER COHEN WHITING TURNER April 15, 2013
2. AGENDA Project Background Sustainability Goals & Process Modeling to Solutions Measurement & Verification Next Steps
3. PROJECT BACKGROUND The GW School of Public Health and Health Services Established in 1997 and remains the only School of Public Health in DC Over 1200 students from every state and 38 nations More than 50 degree options, including 21 master’s degrees, 17 graduate certificates, 3 undergraduate degrees, and 7 doctoral degrees This new ‘home of its own’ (away from the medical school) will consolidates all 7 departments for the first time “We are not only contributing to public health, we are living it, shaping it, and influencing its future.”
4. PROJECT BACKGROUND The GW School of Public Health and Health Services The Building is located on Washington Circle; it is the new “Front Door” to the Foggy Bottom Campus Insert Different Map
5. PROJECT BACKGROUND East Façade (Looking South from Washington Circle)
6. PROJECT BACKGROUND South Façade (Looking North from 24th NW)
7. PROJECT BACKGROUND North & West Façades (Looking South from K Street)
8. PROJECT BACKGROUND Private Offices Public Spaces Open Offices Classrooms
9. PROJECT BACKGROUND
10. SUSTAINABILITY GOALS GW Office of Sustainability Signatory of ACUPCC Reduce carbon emissions 40% by 2025 over 2008 baseline Climate neutrality by 2040 GW Office of Facilities Services $5 M Eco-Building Program to implement energy and water efficiency projects in existing buildings GW Office of Facilities Planning & Design LEED Silver minimum for all new buildings 5 LEED Gold buildings since April 2010; first university in DC to achieve LEED Gold! 7 additional projects currently registered
11. SUSTAINABILITY GOALS Evolution from LEED Silver to Platinum Dean’s Vision Showcase of Environmental Design Marketability of School to Students & Faculty Re-thinking the Budget for Sustainability Design Efficiency Donor Opportunities
12. SUSTAINABILITY GOALS GW SPHHS Project Design Expectations Integrated Design Team 3rd party LEED Consultant Active real-time Energy Modeling
13. MODELING TO SOLUTIONS MODELING TO SOLUTIONS PRE-CONCEPTS TO REALITY
14. Green Power MODELING TO SOLUTIONS Possible Solutions Green Roof Wind Turbines Water Reuse Combined Heat & Power Geothermal Photovoltaics LED Lighting Chilled Beam Heat Wheels Ice Storage Daylighting
15. MODELING TO SOLUTIONS Energy Modeling Use and Application Predicts energy use Compares different design options Test compliance with ASHRAE 90.1 baseline model (Appendix G) Verifies and optimizes control sequences Simulates calibrations for Measurement & Verification
16. SUMMARY
17. MODELING TO SOLUTIONS Why Trane TRACE 700 Easy conversion from load calculations to energy calculations. Unlimited max number of zones Capability of modeling different airside systems plus many HVAC plant configurations and control strategies, including Displacement Ventilation Systems, Active/Passive Chilled Beam Systems, Variable Refrigerant Volume Systems, Demand Control Ventilation, etc. that cannot be modeled with other energy modeling software Comprehensively and actively updated frequently to accommodate newly developed systems
18. MODELING TO SOLUTIONS Future Trends BIM Integrated Energy Models Combined Computational Fluid Dynamics (CFD) and Energy Models
19. MODELING TO SOLUTIONS Energy Modeling Throughout the Design Process Concept: Preliminary studies; load calculations Schematic Design: Identifies the primary energy uses Design Development: Conducts parametric analyses to evaluate alternative specifications & understand trade-offs between initial cost & life-cycle cost Construction Documents: Necessary to document compliance with codes such as the Energy Cost Budget method in the ASHRAE Standard 90.1 or the Total Building Performance section of the IECC
20. MODELING TO SOLUTIONS Water side economizer Air side economizer Daylighting Ice storage Water reuse Water efficient plumbing fixtures Natural ventilation Operable windows Rainwater harvesting Sunshade screen Dedicated Outdoor Air Systems Solar Hot Water Heating Possible Solutions Combined heat & power Triple glazing window Low e windows Chilled beam Displacement Ventilation LED Lighting Advanced Lighting Controls Photovoltaics Heat recovery chillers Heat wheels Geothermal Green power Green roof Wind Turbines
21. MODELING TO SOLUTIONS Dedicated Outside Air Systems Variable Air Volume Chilled Beams Improved Building Envelop Variable Air Volume Under Floor Displacement Heat Recovery Chiller
22. MODELING TO SOLUTIONS Skin Performance Terracotta Rain Screen – Open joints allow for air flow in the cavity behind the tiles. This creates a pressure balanced system when combined with compartmentalization of the cavity. Gaskets and overlapped joints are used to discourage water from entering the cavity while still allowing ventilation of the cavity. The air space and insulation increase the thermal performance of the exterior wall system.
23. MODELING TO SOLUTIONS Chilled Beams on Dedicated Outside Air Chilled beams reduce the need for cooling by air, allowing the use of dedicated ventilation.
24. MODELING TO SOLUTIONS Heat Recovery Chiller Utilizes year-round cooling demands to generate heating water for HVAC use. Water use is also reduced at evaporative cooling towers.
25. MODELING TO SOLUTIONS Under Floor Displacement Ventilation Displacement ventilation limits cooling to the occupied area and takes advantage of natural air currents to improve environmental quality.
26. MODELING TO SOLUTIONS Daylighting, Lighting, and Controls Integrating Artificial & Natural Lighting: Automated reduction of artificial lighting in response to daylight conditions on both interior and exterior. Energy Efficient Lighting: Extensive use of CFL and selected use of LED lights reduce energy use from required lighting. Controls: Lighting Management System in public spaces. Extensive use of occupancy sensors and timer switches throughout the building.
27. MODELING TO SOLUTIONS Storm Water Management and Reclamation
28. MODELING TO SOLUTIONS What Did NOT Apply & Why Combined Heating and Power: Project Scale; Initial Cost Photovoltaics: Irregular Roof Shape, Not Enough Roof Space Thermal Massing: Building Façade, Cost Natural Ventilation: Climate in Washington DC Area; Hot & Humid in Summer (Expand)
29. MODELING TO SOLUTIONS Combined Heat and Power Utilize locally consumed fuel to simultaneously generate power. Requires sustained demand for heating to run a generator.
30. MODELING TO SOLUTIONS Photovoltaics Can be applied to rooftops, and emerging technology includes facades. Requires large amounts of real estate.
31. MODELING TO SOLUTIONS Annual Energy Use Comparison Proposed Design vs. ASHRAE 90.1-2007 Baseline
32. MODELING TO SOLUTIONS Lessons Learned There is no one size fits all solution for a sustainable building. Systems can work against each other, do not make decisions in isolation. Be aware of the limitations of your energy model; complex systems cannot always be modeled out of the box. Energy models are predictive of, but not guar Try to minimize the glass area of the building. This project had 10% more glass allowed beyond Appendix G; which penalized the project of X energy points.
33. MEASUREMENT & VERIFICATION “Begin with the end in mind” (Steven Covey) Data Collection (Metering) Data Transfer (Trending) Data Management (Optimization)
34. MEASUREMENT & VERIFICATION
35. MEASUREMENT & VERIFICATION
36. MEASUREMENT & VERIFICATION
37. MEASUREMENT & VERIFICATION Importance Better building maintenance Improved real return on investment Benefits to future projects from knowledge developed
38. MEASUREMENT & VERIFICATION GW Leadership Approach Facility Services (Jim Schrote): Commissioning Manager Leadership (Joe Lenzi) Energy & Environmental Management (Doug Spengal) Operations & Maintenance Leadership (Bob Oakley) CX Manager EEM O&M
39. NEXT STEPS Building Dashboard: Education on Display
40. NEXT STEPS BIM Data Model
41. NEXT STEPS Current LEED Point Standing CurrentPoints Targeted / Possible Points 26 / 26 pts. Sustainable Sites 10 / 10 pts. Water Efficiency 27 / 35 pts. Energy & Atmosphere 6 / 14 pts. Materials & Resources 12 / 15 pts. Indoor Environmental Quality 6 / 6 pts. Innovation & Design Processes 4 / 4 pts. Regional Priority 91 / 110 pts. 40 50 60 80 110 Certified Gold Platinum Silver
42. NEXT STEPS Future of SPPHS Project
43. Greening Public Health at The George Washington University Washington, DC Speakers: NANCY GIAMMATTEO, AIA, –GWU SCOTT SPANGENBERG, PE, LEED – AEI BRENDON BURLEY, PhD – AEI SONG ZHANG, PhD, PE, LEED AP – AEI KEY DESIGN & CONSTRUCTION TEAM - PAYETTE /AYERS SAINT GROSS AFFILIATED ENGINEERS PALADINO TADJER COHEN WHITING TURNER April 15, 2013