opportunities for businesses to directly improve the bottom line through energy efficiency 3 rd may...
TRANSCRIPT
OPPORTUNITIES FOR BUSINESSES
TO DIRECTLY IMPROVE THEBOTTOM LINE THROUGH
ENERGY EFFICIENCY
3rd May 2010
Kees BrinkmanManaging Director
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INTRODUCTION
• Kees Brinkman: ManagingDirector
MechanicalEngineerworkingintheenergyfieldfor20+years
EMANZAccreditedEnergyAuditor
• Enercon is an Energy and Utility Consultancy BasedinChristchurch
Sixstaff,alldegreedengineers
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DURING THIS PRESENTATION…
1. Why focus on reducing energy and carbon emissions?
2. Energy Management
3. Potential benefits of an Energy Audit Whatarethepotentialsavings?
Ourexperiencewithcommercialandindustrialclients
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1. Why Focus on Energy and Carbon Emissions?
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REASONS TO FOCUS ON ENERGY?
• The economics are attractive! Energypricesareincreasingallthetime
Anyreductioninenergycostdirectlyimpactsonthebottomline
• Once an Energy Audit is implemented, the cost of the audit is typically paid back in less than 100 days!
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INCREASING ENERGY PRICES
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REDUCING CARBON EMMISSIONS
• Reasons to reduce carbon emissions: EmissionsTradingSchemeleadstoincreasedcosts
Combatsglobalwarming
• Ways to significantly reduce carbon emissions: Improveenergyefficiency(mostcommonandeconomicallyattractive)
Switchtorenewablefuels/suppliers
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ENERGY MANAGEMENT SERVICES AVALIABLE TO IMPROVE THE BOTTOM LINE
• Main Services ScopingandFeasibilityStudies
EnergyAudits
TariffAnalysisandTendering
MonitoringandTargetingSystems
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FURTHERMORE…
• Additional Services GreenhouseGasAssessments
FuelSwitchingFeasibilityStudies
OngoingEnergyManagement
AuditImplementationandProjectManagement
ConceptDesignReviews
DemandSideManagementAnalysis
CogenerationSystemAnalysis
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3. Energy Management
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50,000
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150,000
200,000
250,000
Deg
ree
Day
s H
eati
ng
(b
ase
20�C
)
Mo
nth
ly C
on
sum
pti
on
(kW
h)
Energy Consumption and Degree Days
Gasconsumption Electricityconsumption DDH
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WHERE TO START…
• Energy Audit Scoping Study Reviewtheconsumptionofallsitesandoperations
Benchmarkthefigurestodeterminethemostefficientpath
IdentifysitesinneedofLevel2EnergyAudit
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Site 1 Site 2 Site 3 Site 4 Site 5 Site 6 Site 7 Site 8 Site 9 Site 10 Site 11 Site 12 Site 13 Site 14
Nor
mal
ised
Con
sum
ption
(kW
h/m
2)
Normalised Energy Consumption Across Sites
Coal & Wood Gas LPG Diesel Electricity
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LEVEL 2 ENERGY AUDIT – PROCESS
1. Energy Use Analysis Calculatehistoricenergyuseandreviewbills
Determinewhere/whenenergyisconsumed
Findtargetareasforenergyreduction
Lighting25.4%
Downtown Chiller5.6%
Downtown Electric Boilers10.8%
Fans4.8%
Domestic Hot Water7.5%
Miscellanious6.7%
Electric Heating26.3%
Pumping4.6%
Office Equipment8.3%
Electricity Split by Equipment Type
Total Consumption: 3,571,600 kWh/yearTotal Cost: $452,700/ year
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LEVEL 2 ENERGY AUDIT – PROCESS
2. Site Visit Kick-offmeeting
Day-timeinspections,includingmeteringwhereappropriate
Afterhoursinspections
Closuremeeting
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LEVEL 2 ENERGY AUDIT – PROCESS
3. Technical Analysis Performanenergysplittodeterminewhereenergyisused
CalculatesavingsfromEnergyManagementOpportunities
Contactcontractorstoobtaincapitalcosts
EMO ActionCapital
CostAnnual savings
Simple Payback
1.1 ReducethesiteCapacityCharges Low $6,700 Immediate
1.4 ImproveCoolingTowercontrols $9,000 $15,900 0.5years
1.7 Turnoffequipmentatnight Education $1,400 Immediate
6.1a Installlightingcontrols-T1 $2,500 $4,800 0.5years
$11,500 $28,800 0.4 yearsTotal – T1
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LEVEL 2 ENERGY AUDIT – PROCESS
4. Draft report Clienthasopportunitytoreview
5. Review Meeting
6. Final Report
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THE NEXT STEP…
• Monitoring and Targeting Monthlyreviewenergyconsumptionandbillsforeachsite
Compareconsumptionandcostagainstpredicted
Makerecommendationstowardschangesneeded
• Perform Tariff Reviews Ensurethemostcosteffectivetariffisutilised
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4. Potential Benefits…
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ENERGY AUDIT POTENTIAL SAVINGS…
•Opportunities; less than one year payback Typically2–10%energysavings
•Opportunities; between one and three year payback
Typically2–10+%energysavings
•Opportunities; greater than three years Dependsontheprocess Arestillinvestigateddespitethelongpayback Mayhaveproductionadvantages
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CASE STUDY – Large MDF Plant
• Total Identified Savings $1.4millionenergysavingsannually
0.5yearaveragesimplepayback
Reducedannualcarbonemissionsof2,000tonnes(11%)
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CASE STUDY – Office Building
• Total Identified Savings 13.2%energysavingsannually
2.8yearaveragesimplepayback
• Major Opportunities Found ImproveAHUcontrolandlightingefficiency
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CASE STUDY – Canterbury Museum
• Kelvin Nolly Couldnotbeheretoday
• Total Identified Savings $79,000energysavingsannually(36.9%)
$2,500implementationcost
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CASE STUDY – Canterbury Museum
• Opportunities OptimisingtheelectricitydemandcontrolsontheBMS
Reducingfreshairbeingsuppliedtospaceswhennotrequired
Switchingoffplantatnight
FixingthehumiditycontrolsforAHU9
Lighting26%
Miscellaneous4%
UnderFloorHeating6%
ElectricHeating(AHUs)42%
Fans&Pumps13%
Cooling6%
Humidifiers3%
Canterbury Museum - Energy Split
Consumption:1,840,000kWh/yrCost:$188,000/yr
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CASE STUDY – Canterbury Museum
• Daily Load Profile1.Underfloorheating
2.Officeloads
3.Spaceheating
4.Baseload
5.Daylighting
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Ele
ctri
city
Dem
and
(kV
A)
Canterbury Museum - Average Daily Electricity Demand Profile
WinterWeekDays SummerWeekDays WinterWeekends SummerWeekends
1
4
2
3
5
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CASE STUDY – Canterbury Museum
• Optimising BMS electricity demand controls Saved$34,000
BMSloadshedHVACsystemstoavoidControlPerioddemandcharges
AnotherprogramwasinstalledtoavoidspotpriceswhichconflictedcausinglargeNetworkCharges
Solvedbyprioritisingprogramsoravoidingspotmarket
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Any Questions???