Water is the oil of the 21 st century Andrew Liveris CEO, Dow Aug 2008.
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Transcript of Water is the oil of the 21 st century Andrew Liveris CEO, Dow Aug 2008.
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“Water is the oil of the 21st century”
Andrew Liveris
CEO, Dow
Aug 2008
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On-Demand Pumps(Residential hot water recirculation*)
Do they make sense for
Sierra Vista, AZ & consumers?
* Based on Generalized Model for Hot Water Recirculation Analyses ©
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Structured Plumbing(pump at water tank)
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Structured Plumbing(O/D pump at faucet)
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Since June 2000(water)
1 2 3 4 5 6 7 8 9 100
20
40
60
80
100
120
Annual Wasted Water
June 2000 - Jul 2009
Acr
e F
eet
None
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Since June 2000(water)
1 2 3 4 5 6 7 8 9 100
20
40
60
80
100
120
Annual Wasted Water
June 2000 - Jul 2009
Acr
e F
eet
None
Recirc
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Since June 2000(water)
1 2 3 4 5 6 7 8 9 100
20
40
60
80
100
120
Annual Wasted Water
June 2000 - Jul 2009
Acr
e F
eet
None
Recirc
On Demand
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Since June 2000(power)
1 2 3 4 5 6 7 8 9 100
200,000
400,000
600,000
800,000
1,000,000
1,200,000
Annual Wasted Power
June 2000 - Jul 2009
Po
we
r C
os
t ($
)
None
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Since June 2000(power)
1 2 3 4 5 6 7 8 9 10$0
$200,000
$400,000
$600,000
$800,000
$1,000,000
$1,200,000
Annual Wasted Power
June 2000 - Jul 2009
Po
we
r C
os
t ($
)
Timer
None
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Since June 2000(power)
1 2 3 4 5 6 7 8 9 10$0
$200,000
$400,000
$600,000
$800,000
$1,000,000
$1,200,000
Annual Wasted Power
June 2000 - Jul 2009
Po
we
r C
os
t ($
)
Timer
On Demand
None
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June 2000 Policy Consequences*(Policy: timer pumps)
• Wasted water reduction -43%
• Energy costs increase +99%
• Consumers not using ~ 40%
* Derived from updated Generalized Model Analyses for on-demand recirculation pumps, Aug 2010 ©
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2009 Predicted Community Outcome(Wasted power and water)
Costs
Power $2.2M Water 217K
Treat (city) 210K
Acre Feet 290* (95M gals)
CO2 emitted; MT 2,780
* 4.4% of annual water usage
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SV Outcomes
• Analysis did not include:– Fort Huachuca– Mobile homes– Pre-June 2000 apartments– Commercial enterprises– Government buildings
• Understated
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Consumer’s Perspective(Annual, per unit)
N/R Timer O/D
Power $149 $297* $57
Water, gals 8,767 4,982ª 1,198 cost $20 $11 $3
* Weighted power costs based on electric and gas hot water tank mix of 1:4
ª Weighted average for only timer pumps operating 4 or 16 hr/day = 2460 gal
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Breakeven time(years)
Gas Electric
Timer pump
replace 1.4 0.9
defective .7 .5
New construction* .6 .4 * Breakeven years without recirculation return loop is zero; lower initial cost.
(Comment: non-recirculated installation is done for convenience.)
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Conclusions & Actions
• Pumps save energy and water• Lack of awareness • New construction smart decision• City rebates; EOP cost avoidance• Could be an early USPWD grant initiative
• IRS tax credit proposal• SV updating plumbing code• SSVEC rebate proposal
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Presentation Ends
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2009 Predicted Community Outcome(Wasted power and water; two scenarios)
Costs Base Relaxed
Power $2.2M $3.8M Water 217K 310K
Treat (city) 210K 299K
Acre Feet 290 413
CO2 metric tons 2,780 4,813
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A Recent DIY Installation
“We installed an on-demand pump in our home about two months ago. In a day, Helen and I were ‘used to it.’ I wish we had done this 20 years ago!”
Gene Manring• Former Cochise County Supervisor• Former Exec Dir, SV Chamber of Commerce• Board member, SV Symphony• Director, SSVEC• June 20, 2010
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SV Water Data(Source: Water Usage; SV Info, Apr 14, 2009)
City* Analysis• Bella Vista 2852 2852• FHU 1126 1126• PDS WC 1372 1372• AZ Water 1157 1157• PDS GC 384 0• City of SV 159 0• Cloud 9 Estates 26 26• TOTAL 7,076 AF 6,533 AF• Daily Usage (GPCD, g/pp/day*) 138 127 * Population: 45,908
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Decomposition of Plumbing
• Pumps themselves
• Plumbing design: structural waste
• Water/energy nexus: – Water: costs, gallons, and acre-feet plus invisible– Energy: costs, kWhr, and therms
• Recirculation expenses: – plumbing design– by life-style
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Standard to OD Plumbing Comparison(DR Horton Study, 2005)
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Standard to OD Plumbing Comparison(DR Horton study, 2005)