going deep on plug loads - aventri · plugs alone = ~7.6 (3.1) kbtu/ft²‐yr‐with controls if...

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@ the Bullitt Center The Integrated Design Lab The Discovery Commons

http://www.bullittcenter.org http:/www.joelrogers.photoshelter.com http:/www.djc.om

Going Deep on Plug Loads: Strategies from the Bullitt Center12th Annual Energy/Facilities Connections (EFC) Conference4 May 2016Leavenworth, WA

Christopher Meek, AIA , IESNA Associate Professor + Director Integrated Design Lab

University of Washington Department of Architecture [email protected]

www.idlseattle.com© UW Integrated Design Lab, 2015

The Bullitt Center

- http://www.bullittcenter.org/

“The greenest commercial building in the world.”

© UW Integrated Design Lab, 2015

Image: Architectural Record

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The Bullitt FoundationThe Miller Hull Partnership

PAE EngineersSolar Design AssociatesLuma Lighting Design

The Berger PartnershipSpringline Design

DCI EngineersUW Integrated Design Lab

2020 EngineeringRDH

Point32Schuchart Construction

ClientArchitectureMechanical & ElectricalSolar Array ConsultantLightingLandscapeCivilStructuralDaylighting and Solar Shading DesignNatural Waste Treatment SystemsBuilding EnvelopeDeveloperGeneral Contractor

Design and Construction Team

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Net Zero Operation: CBECS Median US Office Building

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Net Zero Operation: Seattle Energy Code Building

Net Zero Operation: LEED Platinum Building

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Net Zero Operation: Bullitt Center Design

Solar Budget: Net‐Metering

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0

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SOLAR

DOMEST HOT WTR

ELEVATOR

VENTFANS

PUMPS & AUX

SPACE COOLING

SPACE HEATING

MISC EQUIP

IT SERVER

LIGHTS

The Road to Net Zero

Net‐Zero Operation

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MISC EQUIP

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The Road to Net Zero

Net‐Zero Operation

Annual Energy (kW

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Ground Source Heat Pump

Heavy Timber Structure: A 250 Year Building

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Courtesy: 2020 Engineering

Water Conservation

Water and Waste Systems: rainwater harvesting and composting toilets

Modeled End‐Use Energy Distribution


Diagram: PAE Engineering

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CBECS Climate Zone 3 Averages

Plug loads are ~ 17% on an EUI of 92 kBtu/ft²‐yr (15.6)

Plug Load Energy in NW Buildings

Office Building: Seattle Energy Code 2009 (SEC, 2009)

EUI ~42 kBtu/ft²‐yrPlug loads alone = ~12.8 kBtu/ft²‐yr

Plug Loads Consume Approx. 29%* of Seattle Energy Code Office Building Site Energy and

38% of Site Electricity (SEC, 2009)


*This is based on modeling done in 2009 – I presume the wattage is dropping somewhat die to adoption of

more laptop computers.

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Bullitt Center

EUI ~16 kBtu/ft²‐yr (Now operating ~10 kBtu/ft²‐yr)Plugs alone = ~7.6 (3.1) kBtu/ft²‐yr‐ with controls

If plug load reduction performance is not persistent over time the project will not meet net‐zero operation.


Plug Load Energy in NW Buildings

Office Building: Seattle Energy Code 2009 (SEC, 2009)

EUI ~42 kBtu/ft²‐yrPlug loads alone = ~12.8 kBtu/ft²‐yr

Plug Loads Consume Approx. 29%* of Seattle Energy Code Office Building Site Energy and

38% of Site Electricity (SEC, 2009)

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Daylighting!

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“Tenant Engagement” (Office Equipt. Plug Loads)

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Energy Conservation Measures

TYPICAL BUILDING

With ENERGY

CONSERVATION

With OCCUPANT

ENGAGEMENT

DESIGN = 38%

DESIGN + PEOPLE= 70%

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Green Lease at Bullitt Center

• Many provisions…• Includes tenant energy budget apportioned by

square footage of leased area.


UW Leased Area: 7950 ft²Annual Energy budget: 5452 kWh

Plug Load Energy Allocation Density: 0.69 kWh/ft²Plug Load “Density” @ 2000 hrs: 0.345 W/ft² (whole building)@ 200 ft²/person: ~70 W/workstation

Office Plug Load Survey: Workstations

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Office Plug Load Survey: Copy Room

Office Plug Load Survey: Kitchen

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Monitors Computer

2 – 20” CFL-LCD 1 - Desktop@ 75 Watts each @ 100 Watts

2 – 22” LED-LCD 1 - Desktop@ 40 Watts each @ 80 Watts160 watts

2 – 22” LED-LCD 1 - Laptop@ 14 Watts each @ 62 Watts90 watts

Work Station Efficienciestypical

good (2009)

better (2010)

250 watts

Graphic: PAE Engineering

14watts

14watts

42 watts

22” LED-LCD

14watts

22” LED-LCD

Thin‐client Workstation

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Smart Plug Strips

control: switches and sensorsmeter: plugs and lights monitor: visualize and inform

Image: Enmetric Plug Load Manager/UW IDL

Comprehensive Plug‐Load/Task Lighting Management

Web‐based Real Time Plug Load Data Collection, Scheduling, and Reporting at Each Receptacle.


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Enmetric Plugstripshttps://prod.enmetric.com/Username: [email protected]: idl@enm

Live Demo*

* fingers crossed

M&V and Occupant FeedbackOccupant Feedback and Energy Performance Documentation


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Predicted vs. ActualBullitt Center Performance

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Bullitt Center PerformanceActuals, 10/1/15

SCL Power Used PV Exported to SCL PV Used by BullittSavings over Baseline Bullitt Building Use Est. Code BaselineSCL Net Meter - SVC 4 Proposed Tenant Building

Graph: PAE Engineering

Thank you!

Christopher Meek, AIA, IESAssociate Professor and Director Integrated Design Lab

University of Washington Department of Architecture [email protected] www.idlseattle.com


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Dynamic Solar Shading: Glare Control and Daylight Persistence Measure

Baseline Windows Automated Exterior Blinds


going deep on plug loads - aventri · plugs alone = ~7.6 (3.1) kbtu/ft²‐yr‐with controls if...

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