Optimizing Daylighting Strategies

11/30/2009

OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEGIESTRATEGIES

PPRESENTEDRESENTED BYBY::Sandy HouckSandy HouckSandy HouckSandy Houck

December 3, 2009December 3, 2009

BRUMMITT ENERGY ASSOC IATES , INC ..Helping people achieve very energy efficient buildings

11/30/2009

OOVERVIEWVERVIEWOOVERVIEWVERVIEW

Defining Defining DaylightingDaylightingDaylight ModelingDaylight ModelingOptimizing Energy SavingsOptimizing Energy SavingsA Performance A Performance DaylightingDaylighting StudyStudy

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QQUALITIESUALITIES OFOF DAYLIGHTINGDAYLIGHTING……DDAYLIGHTAYLIGHT ISIS DYNAMICDYNAMIC

FFFFULLULL SPECTRUMSPECTRUM

PPHOTOHOTO CCREDITREDIT: LRC : LRC DDAYLIGHTINGAYLIGHTING DDIVIDENDSIVIDENDS

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PPHOTOHOTO CCREDITREDIT: G: GREENREEN SSOURCEOURCE MMAGAZINEAGAZINE

MMOREORE DAYLIGHTINGDAYLIGHTING BENEFITSBENEFITS……MMAINTAINAINTAIN CCIRCADIANIRCADIAN RRHYTHMHYTHM

RRRRELAXELAX EYEEYE MUSCLESMUSCLES

AALLEVIATELLEVIATE SSICKICK BUILDINGBUILDING SYNDROMESYNDROME

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WWHATHAT WEWE DODO NOTNOT WANTWANT TOTO CREATECREATE……A A SAUNASAUNA WHEREWHERE PEOPLEPEOPLE HAVEHAVE TOTO WORKWORK

PHOTO CREDIT: DAYLIGHTING COLLABORATIVE

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OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEIESTRATEIES

WWHATHAT WEWE DODO NOTNOT WANTWANT TOTO CREATECREATE….….A “A “DOUBLEDOUBLE--LITLIT” ” SPACESPACE

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WWHATHAT WEWE DO DO WANTWANT ….….CCREATEREATE DDRAMATICRAMATIC & & DDYNAMICYNAMIC SPACESSPACESDDYNAMICYNAMIC SPACESSPACES

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WWHATHAT WEWE DODO WANTWANTWWHATHAT WEWE DO DO WANTWANT….….QQUALITYUALITY VVISUALISUAL EENVIRONMENTNVIRONMENT

VVIEWSIEWS TOTO THETHE OUTSIDEOUTSIDEVVIEWSIEWS TOTO THETHE OUTSIDEOUTSIDE

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HHOWOW DODO WEWE DODO THATTHAT??UUSESE DAYLIGHTDAYLIGHT ((DIFFUSEDIFFUSEUUSESE DAYLIGHTDAYLIGHT ((DIFFUSEDIFFUSESKYLIGHTSKYLIGHT) ) ASAS PRIMARYPRIMARYSOURCESOURCE OFOF ILLUMINATIONILLUMINATION

CCREATEREATE UNIFORMUNIFORMCCREATEREATE UNIFORMUNIFORMILLUMINANCEILLUMINANCE

IINTEGRATENTEGRATE WITHWITH ELECTRICELECTRICLIGHTINGLIGHTINGLIGHTINGLIGHTING

PPHOTOHOTO CCREDITREDIT: LRC L: LRC LIGHTINGIGHTING DDIVIDENDSIVIDENDS

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DDESIGNESIGN FORFOR DAYLITDAYLIT SPACESSPACES……TTASKASK/A/AMBIENTMBIENT LLIGHTINGIGHTING DDESIGNESIGN

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DDESIGNESIGN FORFOR DAYLITDAYLIT SPACESSPACES……LLIGHTIGHT COLOREDCOLORED SURFACESSURFACES

‘‘ ’’AAVOIDVOID ‘‘CAVECAVE’ ’ EFFECTEFFECT WITHWITH LIGHTLIGHTCOLOREDCOLORED CEILINGCEILING

LLAMPAMP COLORCOLOR TEMPERATURETEMPERATURE(M(MININ. 4100K). 4100K)

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OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEGIESTRATEGIESDDDDESIGNESIGN FORFOR DAYLITDAYLIT SPACESSPACES……

PPROVIDEROVIDE GLAREGLARE CONTROLCONTROL

ARCHITECTS ARCHITECTS hannahanna gabrielgabriel wells Headquarterswells Headquarters

11/30/2009

DDAYLIGHTAYLIGHT MMODELINGODELING TTOOLSOOLS

1.1. SSIMPLEIMPLE GGRAPHICRAPHIC TOOLSTOOLSSSOLAROLAR AANGLENGLE SSTUDYTUDY

DDAYLIGHTAYLIGHT ZONEZONE MAPPINGMAPPING

22 PPRESCRIPTIVERESCRIPTIVE TTOOLSOOLS2.2. PPRESCRIPTIVERESCRIPTIVE TTOOLSOOLSLEED LEED VV2 & 2 & VV3 D3 DAYLIGHTAYLIGHT CCREDITREDIT EQEQCC8 8 SSKYCALCKYCALC

3.3. PPERFORMANCEERFORMANCE TTOOLSOOLSIILLUMINANCELLUMINANCE CCALCULATIONSALCULATIONS ((SOFTWARESOFTWARE))PPHYSICALHYSICAL MMODELODEL

11/30/2009

Whole Building Design GuideWhole Building Design GuideWhole Building Design GuideWhole Building Design Guide

SOLAR ANGLE STUDIESSOLAR ANGLE STUDIES

LBL “Tips for LBL “Tips for DaylightingDaylighting with Windows”with Windows”

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DAYLIGHT ZONE MAPPINGDAYLIGHT ZONE MAPPING

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SKYCALCSKYCALCTTOPLIGHTINGOPLIGHTING ONLYONLY

EEXCELXCEL SPREADSHEETSPREADSHEETEEXCELXCEL SPREADSHEETSPREADSHEET

FFREEREE PROGRAMPROGRAMWWWWWW..ENERGYDESIGNRESOURCESENERGYDESIGNRESOURCES..COMCOM

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SSKYCALCKYCALC

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IILLUMINANCELLUMINANCE CCALCULATIONALCULATION SSOFTWAREOFTWARE

AAUTODESKUTODESK’’SS EECOTECTCOTECT ((DAYLIGHTDAYLIGHT FACTORFACTOR))

RRADIANCEADIANCE ((RENDERINGRENDERING))FREEFREE

DDAYSIMAYSIM

FREEFREE

SPOTSPOTFREEFREE

LLIGHTINGIGHTING AANALYSTSNALYSTS’ AGI32’ AGI32

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AGI32AGI32LLIGHTINGIGHTING AANALYSTSNALYSTS, I, INCNC..

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AGI32AGI32LLIGHTINGIGHTING AANALYSTSNALYSTS, I, INCNC..

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PPHYSICALHYSICAL MMODELODEL

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SSOURCEOURCE: : DDAYLIGHTINGAYLIGHTING CCOLLABORATIVEOLLABORATIVE

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6 E6 ESSENTIALSSENTIAL IINGREDIENTSNGREDIENTS FORFOR DDAYLIGHTINGAYLIGHTING TOTO OOPTIMIZEPTIMIZE EENERGYNERGYSSAVINGSAVINGS (IES RP(IES RP--5)5)

1.1. PPLANLAN INTERIORINTERIOR SPACESSPACES FORFOR ACCESSACCESS TOTO DAYLIGHTDAYLIGHT

2.2. MMINIMIZEINIMIZE DIRECTDIRECT SUNLIGHTSUNLIGHT ININ VICINITYVICINITY OFOF CRITICALCRITICAL VISUALVISUAL TASKSTASKS

33 DDESIGNESIGN SPACESSPACES TOTO MINIMIZEMINIMIZE GLAREGLAREArch

3.3. DDESIGNESIGN SPACESSPACES TOTO MINIMIZEMINIMIZE GLAREGLARE

4.4. ZZONEONE ELECTRICELECTRIC LIGHTINGLIGHTING FORFOR DAYLIGHTDAYLIGHT RESPONSIVERESPONSIVE CONTROLCONTROL

5.5. PPROVIDEROVIDE FORFOR DAYLIGHTDAYLIGHT RESPONSIVERESPONSIVE CONTROLCONTROL OFOF ELECTRICELECTRIC LIGHTINGLIGHTING

6.6. PPROVIDEROVIDE FORFOR COMMISSIONINGCOMMISSIONING & & MAINTENANCEMAINTENANCE OFOF AUTOMATICAUTOMATICCONTROLSCONTROLS

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1 PLAN INTERIOR SPACES FOR ACCESS TO DAYLIGHT1 PLAN INTERIOR SPACES FOR ACCESS TO DAYLIGHT1. PLAN INTERIOR SPACES FOR ACCESS TO DAYLIGHT1. PLAN INTERIOR SPACES FOR ACCESS TO DAYLIGHTORIENT BUILDING TO MAXIMIZE DAYLIGHT POTENTIALORIENT BUILDING TO MAXIMIZE DAYLIGHT POTENTIAL

--Long and narrow footprintLong and narrow footprintLong axis running East/WestLong axis running East/West--Long axis running East/WestLong axis running East/West

--High % perimeter areaHigh % perimeter area

Whole Building Design GuideWhole Building Design Guide

IESNA RPIESNA RP--55

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INTERIOR SPACE PLANNING TO MAXIMIZE DAYLIGHTINGINTERIOR SPACE PLANNING TO MAXIMIZE DAYLIGHTING

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OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEGIESTRATEGIES2. 2. MINIMIZE DIRECT SUNLIGHT IN VICINITY OF CRITICAL VISUAL MINIMIZE DIRECT SUNLIGHT IN VICINITY OF CRITICAL VISUAL

TASKSTASKS3. DESIGN SPACES TO MINIMIZE GLARE3. DESIGN SPACES TO MINIMIZE GLARE

IESNA RPIESNA RP--55

Whole Building Design GuideWhole Building Design Guide

11/30/2009

4. 4. ZONE ELECTRIC LIGHTING FOR DAYLIGHT RESPONSIVE CONTROLZONE ELECTRIC LIGHTING FOR DAYLIGHT RESPONSIVE CONTROL

IESNA RPIESNA RP 55IESNA RPIESNA RP--55

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DEFINING DAYLIGHT ZONES:DEFINING DAYLIGHT ZONES:

Side Lighting Side Lighting DaylitDaylit ZonesZones

Top Lighting Top Lighting DaylitDaylit ZonesZones

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OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEGIESTRATEGIESSIDELIGHTINGSIDELIGHTING –– DAYLIT ZONEDAYLIT ZONE –– TITLE 24 2005TITLE 24 2005SIDELIGHTING SIDELIGHTING DAYLIT ZONE DAYLIT ZONE TITLE 24 2005TITLE 24 2005

SOURCE: CA TITLE24 NONRES MANUAL

11/30/2009

OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEGIESTRATEGIESSIDELIGHTING SIDELIGHTING –– DAYLIT ZONE DAYLIT ZONE –– TITLE 24 2008TITLE 24 2008

11/30/2009

OOPTIMIZINGPTIMIZING DDAYLIGHTINGAYLIGHTING SSTRATEGIESTRATEGIESTOP LIGHTING DAYLIT ZONE TOP LIGHTING DAYLIT ZONE –– TITLE 24 05 & 08TITLE 24 05 & 08

11/30/2009

5. 5. PROVIDE FOR DAYLIGHT RESPONSIVE CONTROL OF ELECTRIC PROVIDE FOR DAYLIGHT RESPONSIVE CONTROL OF ELECTRIC LIGHTINGLIGHTING

Credit: LC&D, Credit: LC&D, LutronLutron & & WattStopperWattStopper

11/30/2009

CCONTROLONTROL SCHEMESSCHEMES FORFOR DAYLITDAYLIT ZONESZONESOONN//OFFOFF SWITCHINGSWITCHING

SSAVESAVES THETHE LEASTLEAST AMOUNTAMOUNT OFOF ENERGYENERGY OFOF ALLALL 3 3 CONTROLCONTROL SCHEMESSCHEMES

SSTEPPEDTEPPED SWITCHINGSWITCHINGSSTANDARDTANDARD BIBI--LEVELLEVEL OFOF CACA TTITLEITLE 2424SSTANDARDTANDARD BIBI--LEVELLEVEL OFOF CACA TTITLEITLE 2424WWORKSORKS WELLWELL ININ SSOUTHERNOUTHERN CCALIFORNIAALIFORNIA

DDIMMINGIMMINGLLEASTEAST NOTICEABLENOTICEABLE CHANGECHANGE ININ LIGHTLIGHT LEVELSLEVELS

HHIGHERIGHER INITIALINITIAL COSTCOST, , THUSTHUS LONGERLONGER PAYBACKPAYBACK

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T24 MT24 MANDATORYANDATORY CCONTROLSONTROLS & C& CONTROLONTROL CCREDITSREDITS::

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OOPENPEN LLOOPOOP PPHOTOSENSORHOTOSENSOR PPLACEMENTLACEMENT

LLIGHTINGIGHTING CCONTROLONTROL & D& DESIGNESIGN

Applications:Applications:LobbiesLobbiesLobbiesLobbiesCirculation SpacesCirculation SpacesWarehousesWarehouses

WWATTATTSSTOPPERTOPPER

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CCLOSEDLOSED LLOOPOOP PPHOTOSENSORHOTOSENSOR PPLACEMENTLACEMENT

Applications:Applications:llClassroomsClassrooms

OfficesOfficesLabsLabs

LLIGHTINGIGHTING CCONTROLONTROL & D& DESIGNESIGN

WWATTATTSSTOPPERTOPPER

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6. 6. PROVIDE FOR COMMISSIONING & MAINTENANCE OF AUTOMATIC PROVIDE FOR COMMISSIONING & MAINTENANCE OF AUTOMATIC CONTROLSCONTROLSCONTROLSCONTROLS

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SIDELIGHTINGSIDELIGHTING –– DAYLIT ZONEDAYLIT ZONE –– CALCULATEDCALCULATED

SIDELIGHTING SIDELIGHTING –– DAYLIT ZONE DAYLIT ZONE –– CALCULATEDCALCULATED

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all ltg zones

Daylight Harvest Potential

for Open Office Area

zones a and c OFF8%

all ltg zones OFF85%85%

Interior LightingLighting Power Density

(W/SF)*

Installed lighting – without controls 0.82

Prescriptive ‐ with T24 daylight control credits 0.53

Performance ‐ estimate based on daylight modeling in open office

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TTHEHE MANYMANY BENEFITSBENEFITS OFOF DAYLIGHTINGDAYLIGHTING……HHEALTHIEREALTHIER && HAPPIERHAPPIER EMPLOYEESEMPLOYEESHHEALTHIEREALTHIER & & HAPPIERHAPPIER EMPLOYEESEMPLOYEES

NNOTOT ONLYONLY COMPLYCOMPLY WITHWITH T24, T24, DODO BETTERBETTER THANTHAN T24T24AACHIEVECHIEVE LEEDLEED POINTSPOINTS

RREALIZEEALIZE ENERGYENERGY SAVINGSSAVINGS

EEARNARN UTILITYUTILITY INCENTIVESINCENTIVES

11/30/2009

PPRESENTEDRESENTED BYBY::PPRESENTEDRESENTED BYBY::Sandy HouckSandy Houck

shouck@brummitt.comshouck@brummitt.com

December 3, 2009December 3, 2009

BRUMMITT ENERGY ASSOC IATES , INC ..Helping people achieve very energy efficient buildings

Optimizing Daylighting Strategies

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