Water Supply Power Optimization (Efficiency 101)

Water Supply Power Optimization (Efficiency 101)

A review of energy efficiency actions from simple to complex

• Have a Policy & Shared Vision for Energy Efficiency

• Efficient Design Elements

• Tools

• Controls

• Operational procedures

• Conservation

• Measure It to Manage It

Energy Efficiency – From Simple to Complex

2 I Water Supply Power Optimization - PNWSAWWA Conference May 2017

• Make a Commitment - Written policy that promotes and supports energy efficiency in design, construction and operations activities

• Create a Multi-disciplinary energy efficiency team, with high profile and ability to make changes

• Communicate - train all employees on the policy, encourage participation in programs, show how to make a difference

Shared Vision of Energy Efficiency Goals W/Team, Power Utility, Contractors, and Consultants


• Power providers identify energy efficiency programs as one of the least expensive ways to enhance available power supply

• Rebates are available to reduce the cost for installing efficient equipment and systems

• Peak Shaving incentives for commercial customers with ability to shut down facilities during peak electrical usage events

Energy Efficiency is good business


Idaho Power 2017 Integrated Resource Plan (IRP)

Idaho Power 2017 IRP Fixed Costs

• Correctly sized pipes reduce energy needed to move water

• Pump tests and selection of best pump curve for existing conditions • Use wire to water efficiency calculations

• Adequate water tank storage provides a “battery” to support peak demands and can reduce power used for peak demand pumping

• Water system modeling and master planning to guide capital investment in the system and assure energy efficiency is a key driver

Efficient System Design


Hydraulic Model

Mass Balance Energy Map

Equipment Audit

Operational Practices

Training

Tools of Water System Optimization for Energy Efficiency


Tools –Hydraulic Model


Tools – Hydraulic Model


• Looping

• Leaping

• Losing

• Loading

• Leaking

Eliminate The Five “Ls”


• Read and understand your power utility tariff

• Use power bill data to drive decision making and maintenance

• Do you know someone at your power utility? (They Can Help!)

• Maintain a Comprehensive Map of Variable Cost for Power and Chemicals by facility

Tools – Understand How Your System Uses Energy - Have an Energy Map of your System


Tools - Energy Map


0 500 1000 1500 2000 2500 3000 3500 4000 4500Island Woods #1Redwood CreekChamberlain #2

Roosevelt #3KirkwoodVeterans

FiskLicorice

Long MeadowSettlers 2 (2x power ASR)

FrontierWillow Lane 2

CentennialLa GrangeEdge View

Sunset WestMcMillan

Taggart 1HillcrestBali Hai

Amity27th street

ByrdTerteling

Market (2x power ASR)Beacon

Ten Mile

Energy Intensity kWh/MG

Tools - Energy Map (Chemical Cost and WQ Factors)


Pressure Zone Water Source Chemical $/MG Power $/MG Total $/MG Water Quality Columbia Pleasant Valley 10 225 235 AAA Good Columbia Pioneer 10 225 235 AAA Good

Columbia Columbia WTP& River PS 10 230 240 AAA Good Columbia Ten Mile 10 240 250 Cloudy Columbia Raptor 23 300 323 AAA Good

East First Cassia #1 39 100 139 Fe/Mn East First Vista 11 130 141 AAA Good East First Taggart 2 14 130 144 AAA Good East First Taggart 1 14 130 144 AAA Good East First Cassia #2 46 140 186 Ammonia

East Main Marden WTP 29 82 111 AAA Good East Main Long Meadow 21 100 121 AAA Good East Main Warm Springs 2 26 100 126 AAA Good East Main Chamberlain #2 15 120 135 AAA Good East Main Cliffside 22 120 142 AAA Good East Main Beacon 22 150 172 Fluoride East Main 27th street 33 160 193 AAA Good East Main Chamberlain #1 67 120 187 High Fe East Main Idaho 80 210 290 Fe/Mn

TRIAGE (SORTING) FOR ENERGY EFFICIENCY PROJECTS


Don’t Do Strategic

Quick Wins GEMS

Low Energy Savings High

Low

E

ffort

and/

or C

ost

Hig

h

• Identify Description (What) Location (Where) Submitted by (Who)

• Prioritize (Use Triage Matrix)

• Implement

• Persistence

Opportunity Register: Capture and Track Efficiency Ideas to Completion


1. Pump sequencing investigation to determine individual efficiencies of pumps, use the efficiencies to determine lead lag settings, and priority of sources

2. Review of all Compressor PSI setpoints to verify that they are optimized,

3. A/C and heat issues: Optimize thermostat settings and train all operations personnel on correct settings for heat and cooling

4. Meet Power Company to review upcoming projects for energy efficiency rebate potential

5. Lighting upgrades, occupancy sensors

6. Work management system: Reminders for duty operators to change valve, reservoir and pressure systems as needed (diurnally or seasonally)

7. Identify well cleaning projects, execute, define the savings and document results.

8. Evaluate kWh/MG trends and identify efficiency changes, investigate and correct

Opportunity Register – Suez Examples in 2016


• Perform equipment inventory/populate asset management system

• Tracking performance and planning for rebuilds and replacements (impellers, motors, VFDs)

• Groundwater well performance tracking and well maintenance to maintain productivity

• Eliminate use of valves to throttle pumps. Replacement with correctly sized equipment or variable frequency drives

Equipment


• Local control

• Remote control between several facilities

• System control with supervisory control and data acquisition (SCADA) systems

• Water System Modeling coupled with Advanced Algorithms

Control of plants, wells, pumps, valves, storage tanks and other system facilities: Use Controls to maintain optimum pressure, tank levels, etc.


• Bringing it all together - Algorithm that uses water model and system SCADA data to plan and predict system demand

• System demand profiles, daily and seasonally • Ability to schedule facilities on/off • Daily: 24 hour advance plan; 48 hour advance estimate.

Plan set once each day at a fixed time • Plan is revised/updated every 30 minutes Note: There will be an In-depth Aquadvanced Energy (AE) Presentation @ 4 PM Friday

System Modeling and Advanced Control Strategies


• Write & maintain Standard Operating Procedures & Operation and Maintenance manuals (Hard copy or attachment on MMS device)

• Distribution system routine valve maintenance programs - verify that all system valves are in correct position

• Train all team members to understand and pursue opportunities for energy efficiency – True change requires full participation and engagement of all personnel

Operational Procedures


SUMMER CONSERVATION CAMPAIGN:

Bill Insert

Conservation Guide

TV Commercials

Free Conservation Kits

Conservation and water audit programs Water savings = Power savings


Suez Energy Performance

Sunset West well – March 2016 Added Reservoir backup & optimization with Aquadvanced Energy.


1650

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H p

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G P

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SUNSET WEST

Hidden Valley #1 well – Shows Decline in Efficiency due to failure of a 20 year old pump


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3500

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H p

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HIDDEN VALLEY 1

Cole – Aquifer Storage and Recovery (ASR) Efficiency improvement after chemical well cleaning


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COLE WELL

1. Turn it off - 40 HP motor running 4 extra hours per day = $1,500/yr.

2. Tune it up - Reliable and calibrated measuring instruments to measure PSI, Flow, Level, etc.

3. Fix the leaks (Lost water = Lost energy)

4. Meet loads efficiently - Are you throttling pumps using a valve?

5. Question Assumptions -Just because you’ve “always done it that way”, doesn’t mean it’s the most efficient way

6. Do it Right the first time - Are you pumping water twice?

7. Make it a Habit – Sustaining change is challenging. Use SOPs and clear instructions to stay on track/avoid falling back to old ways

Seven (7) Quick Wins – Ways to talk to your team


1. Have an energy policy and educate the entire team

2. Use storage effectively & use most efficient sources of supply

3. Eliminate the Five L’s (Looping, Leaping, Losing, Loading, Leaking.

4. Redesign pumps to match conditions, Use VFDs

5. Consistent operational procedures, optimized pressures

6. Perform routine maintenance on equipment

7. Use Data to Track performance

It’s Not One Thing, It’s Everything


• Stephanie Raddatz, • Suez Idaho Operation

• Layne McWilliams • Cascade Energy

• Steve Jones • Hansen, Allen & Luce, Inc.

• Chellie Jensen • Idaho Power

Acknowledgements


QUESTIONS?

Water Supply Power Optimization (Efficiency 101)

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