Passive+Ac+ve:Ba.eries,Resilience,andtheDuckCurveDavidMeyer,PE,LEEDAPBD+CNicoleSchusterAIA,LEEDAPBD+C,CPHCSeptember21,2018

Credit(s)earnedoncomple+onofthiscoursewillbereportedtoAIACESforAIAmembers.Cer+ficatesofComple+onforbothAIAmembersandnon-AIAmembersareavailableuponrequest.ThiscourseisregisteredwithAIACESforcon+nuingprofessionaleduca+on.Assuch,itdoesnotincludecontentthatmaybedeemedorconstruedtobeanapprovalorendorsementbytheAIAofanymaterialofconstruc+onorany

methodormannerofhandling,using,distribu+ng,ordealinginanymaterialorproduct.___________________________________________ Ques+onsrelatedtospecificmaterials,methods,andserviceswillbeaddressedattheconclusionofthispresenta+on.

Thispresenta+onisprotectedbyUSandInterna+onalCopyrightlaws.Reproduc+on,distribu+on,displayanduseofthepresenta+onwithoutwri.en

permissionofthespeakerisprohibited.

©AshleyMcGrawArchitects,D.P.C.2018

CopyrightMaterials

CourseDescrip+on

Asmoreandmorebuildingsareincorpora+ngon-siterenewableenergysystems,it’sbecomingincreasinglyimportanttounderstandhowthosesoon-to-be-ubiquitoussystemsaffectthecurrentgridstructure,andtodevelopstrategiesforintegra+ngthenewwiththeold.AtNuthatchHollow,aresearchsta+onforBinghamtonUniversitywhichispursuingLivingBuildingChallenge(LBC)andPassiveHouseCer+fica+on,theprojectteamistacklingthisissuefromtwodirec+ons.Star+ngwiththe“Passive”approach,thebuildingisdesignedtomeettheaggressivehea+ng,cooling,andenergylimita+onsofPHIUS+2015.Theeffectsoftheselimita+onsarethatasmallerPVsystemisneeded,sothereislessvariabilitybetweensupply,orgenera+on,anddemand;also,the+ghtenvelopemeansthebuildingcanthermallycoastthroughpoweroutages,therebyrequiringlessemergencybackupenergy.Thesestrategiesarethefounda+onofaresilientdesign.Onthe“Ac+ve”side,theprojectincorporatesaPVarrayontheroof,whichwillbesizedtosupply105%oftheproject’snetannualenergyneeds,aLivingBuildingChallengerequirement,alongwithaba.erystoragesystem,allofwhichisdesignedtobeaself-sufficientsystem,althoughisgrid-+edforflexibility.Ba.eryselec+onisimportanttothefunc+onofthesystemandislimitedbythestrictRed-ListchemicalcompliancerequiredbyLBC.Twoothercri+calconsidera+onsarethesizeoftheba.eryitself:toosmallandthesystemfails,toolargeanditisn’tcosteffec+ve,andthecontrolsystemfortheba.erytoop+mizedischargetopowerthebuilding.Calcula+onsforsizingtheba.eryderivefromthesizeofthePVsystemalongwiththelocaldemand.Thecontrolop+miza+onisdictatedbythedevelopmentofanalgorithmtotakeprojectspecificopera+onintoaccount.Variabilityin+mingandquan+tyofpeakenergysupplytogridsystemsandpeakdemandfromthemcanwreakhavoconu+litygrids,aphenomenonreferredtoasthe“DuckCurve”bytheCaliforniaIndependentSystemOperator.Becauseofthis,someu+li+esofferminimal,ifany,incen+vesforpropertyownerstosellbackexcessenergy,makingba.erystorageamorea.rac+veop+on,whichhelpstoactuallysmoothoutthegenera+on/demandvariabilityattheindividualproperty.Thissmoothingreducestheu+lityfeesrelatedtopeakdemand,whichwillcontributetoashortenedpaybackperiod.Also,ba.eriescanmakePVeffec+veasanemergencypowersourceduringgridoutages,whereotherwisetheinstabilityofenergygeneratedbyPVmakesitunusableinmee+ngtherequiredloadseffec+velyasadirectconnec+on.Bydesigningtheenvelopeandbuildingsystemstouseveryli.leenergyfromthebeginning,andthenapplyingasmallon-sitePVsystem,grid-+edandconnectedtoappropriatelysizedba.erystorage,theprojectachievesincreasedresilienceanddecreasedstrainontheexis+nggridinacosteffec+veway,makingthisareplicablestrategyforfutureprojectslookingtogettozero,orposi+ve,withoutnega+veimpactstoexis+nginfrastructure.

Learning Objectives

At the end of the this course, participants will be able to:

1.  Understand the compound benefits of building active energy production strategies over a passive energy use reduction foundation.

2.  Understand the “Duck Curve” and the impact of grid-tied, site generated power across the utility grid.

3.  Understand the basics of PV battery systems, selection and sizing.

4.  Understand how the battery control system can be optimized.

AGENDA

•  Project

•  Envelope Strategies

•  MEP Strategies

•  Energy Generation and Storage

•  Questions

LAB

SUPPOR

TSUPP

ORT

MULTI-PURPOSE

SourceEnergy:34.8KBTU/sfyr

Roof:R-85/88

Walls:R-42/61

BelowGradeWalls:R-34

Slab:R-32

Windows:Uw0.15

Roof Plan

HVACSystemsMinisplit–VRFVen+la+onwithrecovery–ERVCompos+ngtoilets–HRV,needrecovery,stopodorsLigh+ngreduc+on–dayligh+ng

Roof Plan

Roof Plan

Roof Plan

X1.05=15,094kWh

Roof Plan

X1.05=15,094kWh

Source:PVWa.sCalculator,15kWarrayinBinghamton

Source:EquestEnergyModel

Averageweek=Busyweek=90kWhBa.ery=10kW

Source:PVWa.sCalculator,15kWarrayinBinghamton

Source:EquestEnergyModel

Source:PVWa.sCalculator,15kWarrayinBinghamton

Source:EquestEnergyModel

Source:PVWa.sCalculator,15kWarrayinBinghamton

Source:EquestEnergyModel

QUESTIONS ?

ThisconcludesTheAmericanIns+tuteofArchitectsCon+nuingEduca+onSystemsCourse