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Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009
Water Services Training Group
13th Annual Conference
10th September 2009
Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009
Energy Efficiency Benchmarking
Jim McGuire
Senior Engineer
North Tipperary County Council
Acknowledgements:
WRC , SwindonDepartment of Environment, Heritage
and Local GovernmentEoin ODonoghue, NTCCTipperary Energy Agency
Energy: Why Worry?
Reducing availabilityPeripheralityClimate ChangeEnergy costs
Policy Drivers
Kyoto AccordEU Targets
20% reduction CO2 emissions by 2020Irish National targets
33% energy reduction in public sector by 2020
Energy use in Local Authorities
water services
public lighting
buildings
vehicles
50%
PROJECT OBJECTIVES:
Energy: how much are we using, where are we using it and how do we compare with each other?
What is the benchmark for energy efficient treatment?
What can be reasonably achieved in terms of further efficiencies on a site-specific basis?
Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009
Project Partners
Meeting the Challenges of the Changed Economic Environment Annual Conference September 2009
Is this a good apple?
Can we compare?
Project Phases:
Phase 1 - DevelopmentDevelop benchmarking programmeDevelop Software
Phase 2 – Implementation at pilot scale
Phase 3 – Roll-out to other works
Project Development
Benchmarking best practice reviewDevelop energy performance indicators:
Water treatmentWastewater treatmentSludge treatment and odour control
Establish measurements & measurement frequency
Develop software
Steps to build a new site
Gain access to web-based softwareBuild the schematicEnter static dataUpload time series dataBatch runDisplay reports
Software
Model Building
and Outputs
Water: Coolbawn Schematic
Waste Water:Nenagh Schematic
Static Data Input
Data input (time series data)
Fill in excel
Sheet
Upload data onto site
View loaded data
Waste Water: New Meters
Electrical Sub-metersInlet works
Rotors O.D No. 1
Rotors O.D No. 2
WAS pumps
RAS Pumps
Dewatering
Flow Meters:WAS
Water: Coolbawn New Meters
Electrical Sub-MetersRaw water abstraction pumpsBack wash pumps and blowersDewateringFinished water high lift pumps
Flowmeter, Sub-Meters
Benchmarking Software output
Routine reports GraphsDetailed reports
Comparison reports within company
Comparison reports between companies
Software output (Water)
Routine report (table) for each process and whole works
Energy performance indicators Actual/Theoretical EPI (kWh/Ml) Actual/Theoretical EPI (kWh/Ml/m) (Pumps)
Routine reports (Wastewater)
Wider range of Energy Performance Indicators (EPI) for Wastewater
Actual/Theoretical EPI (kWh/Ml) Actual/Theoretical EPI aeration efficiency
(Activated Sludge) Actual/Theoretical EPI (kWh/kgBOD)
(Activated Sludge) Actual/Theoretical EPI (kWh/kgNH3-N)
(Activated Sludge) Actual/Theoretical EPI (kWh/Ml/m)
(Pumps)
Water: High Lift Pump Coolbawn
Comparison with other sites:Energy Performance Indicator:
KWH/ML/M
Water: Abstraction Pump Coolbawn
Comparison with other sites Energy Performance Indicator:
kWh/Ml/m
Wastewater Pumping: Nenagh
Comparison with other sites
Energy Performance Indicator kWh/1000m3/m
Water: Abstraction Pump Change
Waste Water: Activated Sludge
Comparison with other sites EPI is kWh/1000m3
Waste Water: Activated Sludge
Comparison with other sites EPI is kWh/kgBOD
Water: Energy Use Coolbawn
Waste Water: Energy use
Other Features of Project Website
Best Practice AreaUpdates of Software Users GuideReport on EPIReport on MeasurementReport on Sub-meteringReports on Innovation
Discussion Area
Conclusions
Software allows International comparison of processesWithin company comparisonsBest Practice AreaDiscussion Area
Possible ImprovementsMore participationGreater time frame flexibilityFocus on high energy processes
FINAL WORD
MANAGING ENERGY CONSUMPTION
RESULTS IN
VALUE FOR MONEY