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10/19/2016
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United Therapeutics Net Zero HQUnderstanding the costs and procurement challenges and opportunities of ZNEOctober 13, 2016
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AGENDA• Why NZE HQ?• Project Overview• Lessons learned
– Design– Procurement
• Net Zero Premium
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United Therapeutics Mission• The development and commercialization of innovative
products to address the unmet medical needs of patients with chronic and life-threatening diseases.
Location: Silver Spring, MD
Size: 121,000 SF (office/retail)73,000 SF (parking)7 stories
Program: - Office- Retail, Public Space- Parking
Goals:- Net Zero Energy- All Renewables On Site- 75% Reduction in Energy- Landmark Building on East
Coast
4THE UNISPHEREPROJECT OVERVIEW
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Site Challenges5
• Mid-Atlantic Climate• Urban site• Neighboring high rises• Limited opportunities for solar
Energy Generation Becomes Limiting Factor
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STRATEGIES
Building OrientationExternal ShadingDay LightingNatural VentilationEarth LabyrinthEvaporative Cooling
DEVELOPING CRITERIA
Passive
Geo ExchangeEnergy RecoveryDemand ControlAutomated ShadingBuilding AutomationPlug Load MgmtRenewable Energy
Active
PASSIVE VS. ACTIVE STRATEGIES
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PLAN LAYOUT7OPTIMIZED FLOOR PLATE
Central AtriumShallow Floor Plate – Maximize Day Light PenetrationCreate a Hierarchy of Spaces - Mobile EnvironmentShared Common Spaces – PantriesEncourage Stair Travel
ENERGY PRODUCTION - PHOTOVOLTAICS81,000 KW BUILDING INTEGRATED SOLAR
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LIGHTING CONCEPTS9DAY LIGHT MODELING
DAYSIM Model
Dim Artificial Lighting System in Response to Day Light
Fully Addressable System
Glare Analysis
Incorporate into Energy Model
Day Light 100% of Office Spaces
Day Light is Adequate 70 – 80% of Occupied Hours
LIGHTING CONCEPTS10TECHNOLOGY ANALYSIS
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PASSIVE COOLING11NATURAL VENTILATION
BUILDING FORM12PRELIMINARY ATRIUM CONCEPT
Natural Ventilaiton
Passive Heating/Cooling- Earth Labyrinth- Solar Baffles- Water Feature
Thermal Chimney- Stack Effect- “Engine” for Natural
Ventilation
Thermal Pool- Lap Pool- Evaporative Cooling- Heat Rejection Source
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PASSIVE COOLING13NATURAL VENTILATION
Geothermal14
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PASSIVE HEATING & COOLING15EARTH LABYRINTH
WALL DETAIL
HVAC SYSTEM16ENERGY RECOVERY | ACTIVE CHILLED BEAMS
Princeton Theological Seminary – Radiant
Unisphere – Chilled Beams
SERC Sustainable Housing - Geoexchange
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PLUG LOAD MANAGEMENT17EQUIPMENT SELECTION
Systems Integration18
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Procurement Strategies
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• Integrated, automated MEP heavy facility
• Net Zero as a buzzword
• Systems Integration Manager
• Controls direct to CM
BAS Mock Up
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• Accelerates MEP equipment procurement
• Early IT involvement critical
• Controls software design
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Net Zero Premium21
Earth Labyrinth22
Labyrinth 1,455,000.00$ Concrete Labyrinth WallsConcrete - Labyrinth Mat & Perim WallsConcrete - Labyrinth LidAddl Insulation throughoutLabyrinth Steel WaterproofingLabyrinth ExcavationShoring at LabyrinthCaissons at Labyrinth
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Solar Arrays23
Solar Array 5,291,184.00$ Solar Tray framing at RoofSolar panel wallSolar panel supports at garageSolar framesCurtain Wall Solar Panel Supports Photovoltaic Panels
Envelope24
Envelope 2,638,000.00$ Increased insulation propertiesInsulation Values at Metal PanelsPremium for Tripple Pane Low E GlassSemi-rigid Insualtion below slabsOperable windows/louvers for natural ventilation
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Geothermal System25
Geothermal System 582,193.00$
Enhanced HVAC26
Enhanced HVAC 4,440,000.00$ $/SF premium for enhanced MEP systems incl. controlsTesting, Adjusting and Balancing
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Building Automation Integration27
Building Automoation 898,800.00$
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Questions & Discussion
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NET ZERO EXPERTISE29PROJECT TEAM
United Therapeutics, Silver Spring
Core Design Team Design Consultants Owner’s Representatives
Peer Reviewers
EwingCole, PhiladelphiaPlanningArchitectureStructural EngineeringMEP EngineeringFire Protection & Life SafetyLighting DesignEnergy Modeling
MHG, Montgomery VillageSite Civil Engineering
Oculus, Washington DCLandscape Architecture
Atelier Ten, London/NYPassive Design
J&A, Marietta GALow Voltage Design
Ted Wallover, Lancaster PAPool Design
Lerch Bates, Littleton COVertical Transportation
POWER Engineers, Hailey IDPhotovoltaic Analysis
Frener Reifer, Bressanone ITCurtain Wall Design
Stranix Assoc., Vienna VAProject Management
Facility Logix, Fulton MDI/T Coordinator
Transsolar, Stuttgart/NY
Cornerstone, Boxford MA
Façade Group, Philadelphia
Pristine Environment, San Diego
AtSite, Washington DC
RediCheck, Norfolk VA
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