Heat Reduction | Energy Efficiency

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Gavin BattyManaging D i rector

Thermoshie ld Austra l ia PTY LTD

Phone: (03) 9728 8800 Mobi le : 0417 563 955

Emai l : gav in@thermoshie ld .com.au

EnergyEfficiency|PerformanceReview|Projectsummary

ProjectSite: KingPin- Townsvil le

Siteaddress: 16HighRangeDr,ThuringowaCentral QLD4817

Executivesummary

KingPinTownsvillewasisolatedasbeingasiteofconcernforexcesselectricityconsumption.

Thekeypointsofconcernwereusagechargesbeingappliedonthelandlordsimbeddednetworks&seasonalpeaksinconsumptionduringhottermonths.Withyearroundheat,theneedtorunthesiteHVACmoreefficientlywasastandoutareaofconcern,foroverallsiteelectricalreduction.

TheBuildingManagementSystem(BMS)wasinstalledinordertotrack&isolatespikesinthemeteredconsumption,aswellasprovidetheabilitytobettertailorthesites

TheThermoshieldcoatingwasappliedwiththeviewtoassistreducingtheloadontheHVACsystemthatrunsatnearpeakcapacityforthevastmajorityoftheyear.

ThereportwillshowthecoatinghasbeenhighlysuccessfulinreducingtotalkWhusage.

Totalsiteelectricityusageisconsistentlydownpermonth,onayearonyearcomparativebasisinthevicinityof15%-20%.Projectpaybackisontargettobeachievedinside2years.

KinPincentresconsumealotofelectricityforgeneraloperationsduringevenings,whenHVACusageisatitslowestrequirements.Asaresult,a15-20%reductionintotalsiteusage,equatestoanapproximate50%reductioninHVACusage.

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Section1: Background|Electricityreview:

Thebelowtablecollatesallthe2014electricityusageforKingPin,Townsville:

Findings:

• Thesiteconsumesnearly1millionkWhannually.

• Beingonalandlord’simbeddednetworkpresentsmanyissues&frustrationsforthetenant.BesidesthevolumeofkWhusage(976,000consumed)-mostobviouspointstonotearetheveryhighdemandcharges&servicefeecosts.

• AroundJuly,thepricep/kwHwasreducedby10%-butservicefeewasraisedby520%!

• Itappearsthelandlordwishestoappear‘cheap’bycharginglowrateperkWhbutthisismorethanoffsetbyexceptionallyhighdemand&servicefees.

• Thereisnodifferentiationbetweenpeak&offpeakrates.Tenantpaysaflatrateper/kWhregardlessofpeakoroffpeakusage.

• ThereisaclearseasonalincreaseanddeclineintotalkWhconsumption.ThiswouldindicateHVACoperationaccountsfortheseasonaltrendofincreasedusageinhottermonths.

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Section2: Overview–buildingoriginalcondition&projectmethodology

Belowisanaerialphotooftheoriginalconditionofthesite:

Thesiteitselfappearstobealargelowpitchedroof,withaged(&stained)zincalumesteelsheeting.Theroofareaisapproximately3,900m2&wouldabsorbextremesolarradiationexposure. Thekeyvariantinsurfacewouldbetheabilityfortheceramiccoatingtore-radiateheatawayfromthesurface(emissivity)whereasthestainedzincalumesteelsheetingabsorbsnearlyallthesolarradiationit’sexposedto,causingsheettemperaturestosoarandtransferintothebuilding:

ProjectmethodologyThe2majorimplementationsweretheinstallationofabuildingmanagementsystem(BMS)&applicationoftheThermoshield,ceramicinsulationcoating.TheBMSsystemallowsHVACequipmenttorunofftemperaturesensorsthatareplacedinmorerealisticareasofthebuilding.Thisallowsthesystemtoprovidecoolingmoreaccuratelyasitistailoredtopatroncomfort.TheThermoshield,ceramicinsulationcoatingistobeappliedtotheroof&preventheattransferintothebuildingenvelopeitself.ThisisdesignedtoreducethecoolingloadoftheexistingHVACsystem.TheBMSprovidesadirectfeedtothesitemeter&allowstodownloadpast&livedata.

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Section3: Performancefindings–ReductionsyieldedthusfarTheBMSsystemwasinstalledonApril18th2015.

FromthedownloadeddatafromtheBMS,itappearedtohaveanoticeableimpact:

Howeverwhenoverlayingthe2014electricityconsumptionwith2015,youcanseetheBMSinstallationhadfailedtomakeanoticeabledecouplingfromthetrendorseasonaldecline,whereastheThermoshieldceramiccoatingmadeahighlynoticeablereduction:

TheKingPinTownsvilleelectricityusageishighlycorrelatedtothegradualincreasesanddecreasesintemperatures.ThismakesussafelyassumeHVACefficienciescangreatlyreduceoverallsiteelectricity,particularlyinhottermonths.

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Section3: Performancefindings–continued:IfwefocusontheThermoshieldcoatingalone,itscorefunctionistopreventradiant&convectionheatcausedbysolarradiationfromenteringintothebuildingitself.FromtheaBMStemperatureloggerinstalledintheceilingcavity–wecanseethatthecoatingmadeanimmediateimpactonreducingtheinternaltemperature:

Oncewehavedeterminedthatthecoatingisachievingitscorefunctionbyremovingheat,wecanseeifitiscorrelatingtolesskWhconsumption:

*datasourcedfrombilling,notBMSdata*

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Section3: Performancefindings–continued:Beforesigningoffassuccessful&quantifyingthesavings,itisimportanttogaugeiftheweatherisprovidingasignificantimpact.A1-2degreeincreaseinaveragedailymaximumcangreatlyeffectHVACload.

Thesamecanbesaidaboutadjustingathermostat.Loweringinternaltemperaturerequirementfrom24dCto23dCtoincreasecomfort,canmakeahugeimpactonbaselinecomparison.

Belowgraphoverlays:

• 2014Townsvillemaximumdailyaveragetemperature• 2015Townsvillemaximumdailyaveragetemperature• 2014KingPinelectricityconsumption• 2015KingPinelectricityconsumption

• Youcanseethe2014electricityconsumptionisalmostperfectlycorrelatedtothe2014averagedailymaximumtemperature.

• Youcanseethefirst3-4monthsof2015,temperaturesinTownsvillewere5-10%hotteronaverage.

• February&March2015weresignificantlywarmerthan2014–resultinginelectricityusageforthesemonthstospikebyaroundthesamepercentageamount

• BMSinstallationfailedtomakeanoticeableimpactonreductioninexcesstoregularseasonaldecline.

• FollowingThermoshieldapplication,siteelectricalusagereductionsbegintodecouplesignificantlyfromseasonal&temperaturetrends.Showingverystrongresults.

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Section3: Performancefindings–continued:Ifweisolate&comparethe12monthperiodprecoating&postcoatingagainsttheseasontemperatureoverlay,weareabletofullyverifythefindingsthusfar:

YoucanseeTownsvillehaveincurrednearidenticaltemperatureexposurefortheperiodofreview.If2015weretohavebeencoolerthan2014–thereductionsinelectricalusagewouldbeasmuch(ormore)todowithlowertemperatures,asitwouldbetodowiththecoating.Pointtonote:February2015appearedtohaveasignificantfallinelectricityconsumption,duringaperiodwhereFebruary2015wasinfacthotterthanJanuary2015.Thisdemonstratesastrongreversalagainstthelongtermtrendwhichwouldindicatethatoperationally,thesiteusedlesselectricity.

Thiscouldbeadownturninlaserskirmish(schoolholidaysover?),lessbowling(inbetweenseasons?)orsomethingofthisnaturetoexplainthereversaloftrend.Performancefindingsconclusion:

ThecorefunctionoftheBMS&coatingistoreducekWhconsumption.Thisappearstohavebeenmettoourlevelsofexpectations.

A15%reductioninsiteuse,isestimatedatbeinganapproximate50%reductionintheHVACusagespecifically.

Averypleasingresult.

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Section4: Financialbenefits

Withsiteoperationsbeingconsistent&temperatureexposuresbeingidentical,wecanascertainthebelowsavingshavebeenyielded:

Basedontheabove7monthssavings&extrapolatingthecurrentseasonalsavingstrends,belowtablecombinessavingsthusfar,withanticipatedsavingsforthe12monthperiodfollowingtheBMS&coatinginstallation:

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Section4: Financialbenefitscontinued:Basedontheperformancesyieldedthusfar,the2yeartargetforsavingsisontracktoyield:

• Year1toyield $27,930• Year2toyield $37,037

• 2yearreturn $64,967Basedonthesefigures,projectpaybackisontargetatbeing2yearsIfthetenantwereonthecurrentlandlordpricing(highercostp/kWh&zerofixedcosts),thepaybackwouldhavebeenontargetfor18months.

Section4: Conclusions,findings&recommendations:Townsvilleisanexcellentregionforenergyefficientinvestment,asitencounters‘yearround’heat.However,ambienttemperature&HVACefficiencyarenotasstronglycorrelatedassolarexposure.Cloudcoveror“hazy”airqualitycanbothassistitkeepingheatoffaroof,thereforeoutofabuildingduetoreducingpeaksolarradiation.Theamountofdirectsunlightcausestheroofsheetmetaltosoar&emittheheatintothebuildingenvelopeitself.

Ona25degreedaywithpeaksolarradiationcanprovidemorestressonHVACthanacloud35degreehumidday,astherooftemperaturesapreventedfromreachingthe80-90dCmark.

Thebelowgraphdemonstratesthispoint.Thebelowcitiesallexperiencehightemperatures,butdifferintheirpatternsfordirectsolarexposure.Thisneedstobeconsideredwhenreviewingfutureprojects:

Globalsolarexposureisthetotalamountofsolarenergyfallingonahorizontalsurface.

Thedailyglobalsolarexposureisthetotalsolarenergyforaday.Typicalvaluesfordailyglobalsolarexposurerangefrom1to10kWh/m2.

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Section5: Coatingapplication|Projectdelivery: Powerwashing:

Roofcleaningwascarriedouttoremoveallloosedebris,dirt&grime:

Etchprimercoating:

Appliedpriortocoatingtoensuremaximumadhesion.Goesonlightgreen,driesclear:

Re-coatingzincalumealloysheetingcanoftenincurissueswithadhesion.

Primerremovesanypotentialissuesthatcouldoccur&willensurecoatinglongevity.

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Section5: Coatingcontinued:Inadditiontoetchpriming,wenoticedtherewemanyareasofisolatedcorrosion.

Priortocoating,weappliedathicklayerofrustconverter.Thiswasnotincludedinthescopeofworks,butwefeltitwouldgreatlyassisttheoveralllongevityoftheroof:

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Section5: Coatingcontinued:FirstCoat|commencement&completion:

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Section5: Coatingcontinued:SecondCoat|commencement&completion:

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Section5: Coatingcompleted:

Before&after:

Section6: ClosingSummary|Benefitsachieved:

• Internalceilingtemperaturesreducedbyupto27%

• 96,000kWhsavedin7months–comparedtoyearpriormonthlyusage• Approximately85tonnesofcarbonemissionsprevented

• Townsvilletemperatureshavebeenhotterpostcoating–fortifyingthesavings

• Metalsealedbeneatha350micronmembranebarrier.Resultingintheunderlyingmetalbeingshieldedfromallwater&oxygenexposure,eliminatingtheabilitytorust–significantlyprolongingtheexpectedlifeoftheroof.

• Duetoloweruse,thecoatingwilllowermaintenancerequirementsfortheA/Csystem• ProlongingthelifeoftheA/Csystem• Mitigatingyourcommunity’s‘UrbanHeatIslandEffect’• Increaseecologicalsustainabilityfactor–makingyourbuilding“greener”

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Section7: Nextsteps&closing:

Asnewbillsarereceived,theresultingdatawillbeaddedtotheongoingevaluation.

Withthetenantduetomoveoffthelandlordimbeddednetwork&duetomovetoaretaileroftheirchoice–thebasisforbillingdesignwilllikelychange.

ThetotalkWhchargedwillcontinuetoberecorded&savingslogged.

Closing:

ForanymoreinformationregardingtheTownsvilleKinPinproject–pleasedon’thesitateincontactingus.

Formoreinformationplease,pleaserefertoourwebsite:

www.thermoshield.com.au

Thanks&kindregards

GAVINBATTYManaging Director

Factory11,42MillsRoadDandenongVIC3175

E. gavin@thermoshield.com.au M. 0417563955T. (03)97288800