How to Save 90% on the Home’s Biggest Energy Hog… Look Outside Presented by: Steve Easley – Steve Easley and Associates Jeff Farlow – Pentair Water Pool and Spa

A National View of Pool Energy Use • 4.5 million residential pools in the US • $1.1-1.6 billion spent per year in energy • 9 to 14 billion kWh per year for pumps • 36 to 63 million therms per year,heating • CO2 emissions =10 million tons per year

A National View of Pool Energy Use, cont…. • Use the equivalent of 24 medium sized power plants • Emissions of 1.3miilion cars (500 MW)

• California, Florida, Texas, Arizona, New York, top five states

Natural Resources Defense Council,2008

A National View of Pool Energy Use, cont….

Residential Pool Growth

Where Pools Use Energy • Filtration of water • Pools sweeps or cleaners • Pool heating • Pool lighting • Water features

Energy Savings Technologies for Pools • Variable speed pumps • PV powered Variable speed pumps • Efficient heaters, Solar, HP, Gas • Better controls and schedule • Pools covers • LED lights • Better designed plumbing

POOL Retrofits Are Good Investments!

PUMP COMPARISONS

Typical Pool Energy Use • Filter Pumps draw 1,500 2,500 watts • Run 4.5 to 24 hrs/day Ave.- 6 hrs /day • 3800 kWh/year • Cleaners 1,200-1500 watts 3.5 hrs/day • Filtration and cleaning can exceed 5,300 kWh/year

Pump Physics

Retrofit Case Study

• Northern California • 20,000 gallon pool, built 2002 • Tiered Utility Rates $.12 - $.40/kWh

Retrofit Case Study, Before •1.5-horsepower standard pool pump (for filtration and solar heating) • Sweep-style pool cleaner with a 3⁄4-hp booster pump • 2-hp waterfall pump one • 500 watt incandescent light

Retrofit Case Study, Before • The original single-speed pump ran an

average of 6 -7.5 hours/day @ about 2100 watts for filtration and heating. • The pool cleaner’s booster pump, which ran for about 2.5 hours/day, @ an additional 1372 watts. • Combined, these two pumps were using an average of 15 kWh per day.

Retrofit Case Study, After • Pentair Intelliflo variable-speed pump (for filtration, solar heating and pool cleaner) • 2nd variable-speed pump for waterfall • LED lighting

Retrofit Case Study

Retrofit Case Study, Summer, No Solar • • • •

Summer use without solar, old pump, 6 hrs/day run time Pump, 2,092 watts X 6 hrs/day = 12.5 kWh/day Cleaner, 1,372 watts x 2.5 hrs/day = 3.4 kWh/day Total energy 15.9 kWh/day

• • • •

Summer use, retrofit new pump, 10 hrs/day run time Pump =221 watts X 7 hrs/day = 1.6 kWh/day Pump & cleaner, 650 watts @ 3 hrs/day = 2 kWh/day Retrofit total energy = 3.6 kwh/day Savings = 15.9 – 3.6 = 12.3 kWh/day

Variable Speed Pump

Water Features

Water Feature Retrofit Case Study

Pool Lighting

Pool Lighting • Incandescent = 500 watts • LED = 45-70 watts, multiple themes • LED’s last substantially longer

Energy Savings Methods • Variable speed pumps • PV powered variable speed pumps • Efficient heaters, solar, HP, gas • Better controls and schedule • Pools covers • LED lights • Better designed plumbing

SOLAR HEATING

SOLAR HEATING • Survey for orientation • Minimum 50% of pool area • 100% Adequate for most area • Use pool covers

Plumbing Design

Piping Design • Increase piping diameter • Reduce piping length • Use sweeps instead of 90o elbows • Increase the size of the pool return outlets • Increase the size of the filter • Use cartridge Filters

Pool Pumps – Target for Energy Reduction

Variable Speed Pump Value… “For the City of Palm Desert Energy Efficiency Program, the variable speed pool pump is the most cost effective appliance with the fastest ROI of all components offered in the EE portfolio.”

Pat Conlon – Director of the Office of Energy Management for the City of Palm Desert (retired)

Typical Pool Circulation System Primary Filtration Pump

Annual Savings – Pool vs Energy Star Home* Home Savings from upgrading 2,500 ft2 single story home to Energy Star Levels

City Phoenix Los Angeles Orlando/Tampa Islip (NY) San Antonio

Climate Swimming Energy Star Zone Pool Home 3

$390

$509

4

$633

$529

2

$621

$679

11

$454

$686

4

$491

$704

*National Resources Defense Council (NRDC) Synergies in Swimming Pool Efficiency – March 24, 2008

Recommendations by NRDC 

ENERGY STAR®, LEED, or other voluntary labeling programs should consider adopting specifications for new pools…



Utilities should consider deploying energy efficiency incentives and marketing programs …

Synergies in Swimming Pool Efficiency: How much can be saved?

– Natural Resources Defense Council March 24, 2008

Demand (kW) Savings through new technology

Pump Hp ½ Hp ¾ Hp

1 Hp 1 ½ Hp 2 Hp

3 Hp

Traditional 1200 W 1300 W 1500 W 1900 W 2100 W 2800 W

Variable Speed

150 W ↕ 400 W

HP - Speed Comparison

• • • •

3 2 1 1

hp ---- 3450 RPM hp ---- 3075 RPM ½ hp ---- 2900 RPM hp ---- 2600 RPM • ¾ hp ---- 2350 RPM • ½ hp ---- 2100 RPM

• ?? hp

---- 400 RPM

What the Variable Speed allows you to do

Slow night filtration

Filtration when pool covered

Standard daily filtration

Solar panel heating

Adjusting flow of waterfall or fountain

High speed

More efficient pool cleaning Backwashing

Fine tuning of overflowing pools

Low speed

Water heating

With the Variable Speeds the scope of possibilities is unlimited !

Opportunities ?

Collect Data 1. Existing Hp ______Hp 2. Daily runtime - ______hours 3. Months per year - ______ mon/yr 4. Pool Size ______ gal 5. Utility rate ______ $/kWh Savings? Estimate or Calculate?

Horse Power Ratings

Rated Hp Total Hp

Hours per Day

To the Cost Calculator

Cost of “doing nothing” Savings

$5,000

Single speed operating cost

$4,000

Variable speed operating cost Pump Purchase

$3,000 $2,000 $1,000

Break even point ROI = 18 months

$0 -$1,000 -$2,000 -$3,000 -$4,000 -$5,000 Year

1

2

3

4

5

Calculating Cost Watts

x

(kW)

x

X

Time x Cost (hrs/day)

x

($/kWh)

X

• 2.2 kW x 8 hrs/day x $.18/kWh = $3.17 / day • $3.17/day x 30 days/month = $95 / month • $95 / month x 5 months/yr = $475 / year @24 hrs/day = $1,140 / year

Title 20 Pump Labeling

Service Factor (sf) • Service Factor (sf) – ≈ Over load capacity of motor – Percent above nameplate horsepower at which a pump motor may operate

• Rated Hp x Service factor = Total Hp

Typical Pool Pump Service Factors

Rated X Hp

sf

=

Total Hp

½

1.9

0.95

¾

1.67

1.25

1

1.65

1.65

1½

1.47

2.21

2

1.3

2.6

3

1.15

3.45

Pool Pumps 1 Horsepower ≠ 746 Watts Hp EE pump ½ ¾ 1 1.5 2 3 Variable Speed (~30gpm)

Low Head

Average (gpm)

High Head

1200 W

1222

(66)

1100 W

1525

1525

(73)

1300

1728

1700

(80)

1500

2200

2088

(87)

1700

2400

2200

(91)

1800

3200

2800

(98)

2000

106

150

(30)

230

Affinity Law

Power & Flow vs. Speed

Speed

Flow

Power

(rpm) 3450 3000 2400 1725 1200 600 0

(gpm) 66 55 44 33 22 11 0

(W) 2000 1157 593 250 74 9 0

Pump Affinity Law Flow as Speed Changes

Pressure as Speed Changes

Power as Speed Changes

Efficiency Eff = Power out (Hp) Power in (kW)

Motor Efficiency

Permanent Magnet

2 Speed - High 2 Speed - Low

 Energy saved through speed reduction is MUCH GREATER than savings through improved motor efficiency

Conflicting goals?

Increase circulation time. Save energy. Maintain turns. 1 ½ HP single speed pump vs. Variable flow pump 10,000 gallon pool / 60 ft TDH / 86 gpm 15.2 kWh

Number of Turns

4

11.4 kWh

3

3.3 kWh 2.0 kWh

2

1

3.8 kWh

1.2 kWh

0 2

4

6

8

Hours per day

10

12

Electric Rates…on the rise Average cost of Residential Electricity in US

Cost per kWh (cents)

14 13 12

13%

11

53% 10 9 8 7

19 1 1 1 1 1 2 2 2 2 2 2 88 990 992 994 996 998 000 002 004 006 008 010 US Department of Energy – Energy Information Administration (July 2009)

Hardware Construction Keypad Cover (Only Exists to block LCD screen from Sun Light) Drive Enclosure Fan Cover Communication Port RS485 or Relay Motor Frame

Hardware Construction TEFC: Totally Enclosed Fan Cooled !!

Fan Shroud

End Frame

Front and Back Bearings = Superior to industry standard

Fan = External Frame = TEFC Stator = Synchronous Rotor = Permanent Magnet 56 Square Flange Adapter

What can an AC drive do? By controlling the speed of the pump... • Regulate: Flow, Pressure, Level… • Provide gentle ramp up or down – eliminates surges, mechanical, electrical, and hydraulic

• Monitor and Protect – motor, cables, plumbing (VGB)

• • • •

Reduce Energy Consumption Reduce Noise Obtain ultimate controllability Maximum flexibility

Variable Speed Pumping Benefits Key Concept – Slower is better! 

Reduces energy cost (by as much as 90%).





Enhanced equipment performance  Filtration - 30µ → 15µ  Reduced equipment stress Quiet as a whisper



Longer equipment life



Protects itself from damage



Customize and change water features

All are Customer focused benefits!

Energy Saving Goals Carrot vs. Stick

Voluntary Incentives

Forced Legislation

Utility Programs

Programs Under Development / Consideration

Current Activities for Incentives ONTARIO

WASHINGTON

H A W A II

MONTANA

MAINE

NORTH DAKOTA MICHIGAN

OREGON

VT

MINNESOTA IDAHO

SOUTH DAKOTA

WISCONSIN

NEW YORK

PENNSYLVANIA

IOWA

NE VADA

NEBRASKA

OHIO

UTAH

ILLINOIS

KANSAS

DC

INDIANA

COLORADO CALIFORNIA

WE ST V IRGINIA MISSOURI

VIRGINIA

KENTUCKY NORTH CAROLINA TENNESSEE OKLAHOMA

ARIZONA

SOUTH CAROLINA

ARKANSAS

NEW MEX ICO

ALABAMA

GEORGIA

LOUIS IANA TE XAS

MISS ISS IPPI

FLORIDA

Existing Incentives In Active Pursuit Anticipated in 2011

MASS CONN

MICH IGAN

WYOMING

NH

RI

NEW JERSEY DELAWARE MARYLAND

Existing Rebates for Variable Speed State

Utility

Consumer Rebate

Dealer Rebate

AZ

Arizona Public Service

$ 200

$ 50

CA

Southern California Edison

$ 300

$ 100

CA

PG&E

$ 100

$ 200

CA

San Diego Gas & Electric

$ 200

$ 100

CA

Municipalities (8 each)

Up to $ 300

Up to $ 100

FL

Gainesville Regional Utility

$ 350

$ 50

MA

All Massachusetts (5 Each)

$ 200

$ 50

NY

Long Island Power Authority

$ 200

$ 100

NV

NV Energy

$ 200

$

0

NV

Boulder City

$ 200

$

0

PA

Duquesne Light

$ 60

$

0

National Grid

$ 400

$ 200

Austin Energy

$ 200

$ 100

Efficiency Vermont

$ 200

$ 50

No RI Federal TX VT

Market Channels Manufacturer

Retailer

Dealer – direct buy

Dealer

(New Build)

(Pump Installer)

Wholesale Distributor

(New Build & Service) 10%

5%

(Pump Installer) 85%

Consumer

Heat loss through evaporation

It only takes 1 Btu to raise 1 pound of water 1° F, – but –

Each pound of 80ºF water that evaporates takes a whopping 1,048 Btu of heat from the pool.

White LED Lights – additional benefits

• Uses only 70 Watts • Light output equivalent to a 500W incandescent pool light

• Superior lens geometry and reflector design

– Increases intensity towards pool bottom – Optimum and uniform distribution of light avoiding “hot spots” – Minimizes glare

• Stays illuminated, even if an individual LED is disabled

White LED Light

IntelliBrite 400 500Watts Watts LED

Cartridge & D.E. Filters – additional benefits

Clean & Clear® Plus and Quad D.E. ® • Easily Removable Cartridge Elements • Four Large Capacity Cartridges – Maximum surface area – Traps more dirt – Extends time between cleanings

• Cartridges have Slick Surface design – Dirt easily rinses off

• Fiberglass reinforced polypropylene tank – Strong and Corrosion resistant

• Single-piece base and body – Strength, stability, and dependability

Green Platform – Systems approach • Site preparation – – – –

Planning, orientation Excavating Landscape H2O Source for initial fill

• Hydraulics – Low Flow! – Pipe size / velocity – Fittings / layout

• Safety • Equipment Selection – Automation – Solar Heating – Pool Covers

• Chemistry

Questions! For additional information or assistance contact-

Jeff Farlow Program Manager of Energy Initiatives Pentair Water Pool and Spa (919) 566 – 8054 [email protected]