uconn energy conservation...steam trap & line maintenance program potential savings •153...
TRANSCRIPT
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UCONN Energy Conservation
C.O.R.E Assessment Matrix
December 19, 2008
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Energy Budget Goals
• Primary Goal
– Reduce volatility of gas pricing by increased hedging
– Currently at near historical low prices
• Secondary Goals
– Increase outreach programs
– Reduce average consumption
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Energy Expenditures
• CY08 Estimate
– $ 18.71 Million
– 7,354 Mwh
– 1.81 Million MMBTU
$0.00
$1.00
$2.00
$3.00
$4.00
$5.00
$6.00
$7.00
$8.00
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$10.00
$0.00
$5.00
$10.00
$15.00
$20.00
$25.00
$30.00
$35.00
CY99 CY00 CY01 CY02 CY03 CY04 CY05 CY06 CY07 CY08
Gas P
rice $
$$
/MM
BTU
Ene
rgy
Spe
nd
in M
illio
n $
$$
UCONN Storrs Energy Bill Compared to NYMEX
UCONN Energy Bill
NYMEX Average
CY07 $22.32 Million 11,123 Mwh
1.73 Million MMBTU CY06 $25.97 Million
53,648 Mwh 0.79 Million MMBTU (6 mth)
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Monitoring Capability
• FASER Version 5.0 Software (1999)
– Monitors all accounts with energy vendors
– Database maintained by Accounts Payable since 2006 by Bruce Gerber/Michael Virone
– Updates/Patches required
• PowerLogic Square D Software
– Monitors on campus sub-meters
– Ideally suited for electrical tracking/troubleshooting
– Capable of energy use reporting
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Monitoring Capability (Continued)
• Andover Building Management System – Capable of control, monitoring, and reporting – 150 Buildings can be controlled
• Phoenix Control Systems (Lab Hoods) – Used in Labs and Animal Care Facilities where airflow
tolerances are critical
• CT Water – Monitors campus supplied customers
• Metering Program – In process – 30 water meters, minimal users – 20 electrical meters – 10 steam meters
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Energy Hogs
• Develop lists of Top Ten “Energy Hogs”
• Encourage Energy Hog managers to proactively administer conservation efforts
• Develop conservation goals addressing issues discovered
• Pursue high ROI improvements
• Distribute progress reports
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CL&P Supplied Energy Hogs July 2007 to Current
$0.00
$2,000.00
$4,000.00
$6,000.00
$8,000.00
$10,000.00
$12,000.00
$14,000.00
$16,000.00
$18,000.00
SPRINGMANORFARMS
WATERTREATMENT
PLANT
ANIMALISOLATION
BARN
LONGLEYBLDG
RT. 195 STLIGHTS
MDC PumpStation Birch
Rd
OFFICE OFSPECIAL SVC
AGRONOMYPLANT & SOIL
CAMPUSSHOPPING
PLAZA
Celeron Path
Nayden Clinic
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UCONN Main CL&P Meters
$0.00
$100,000.00
$200,000.00
$300,000.00
$400,000.00
$500,000.00
$600,000.00
$700,000.00
Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 Jul-08 Aug-08 Sep-08
MAIN CAMPUS
DEPOT CAMPUS MAIN
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Sample Monthly Electrical Report Willimantic Well Field
$0.00
$2,000.00
$4,000.00
$6,000.00
$8,000.00
$10,000.00
$12,000.00
$14,000.00
$16,000.00
$18,000.00
Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 Jul-08 Aug-08 Sep-08
UCONN Spring Manor Farms CL&P Electrical FY08-Current
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CNG Energy Hogs July 2007 to Current
$0.00
$5,000.00
$10,000.00
$15,000.00
$20,000.00
$25,000.00
$30,000.00
$35,000.00
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Sample Monthly Gas Report
$0.00
$2,000.00
$4,000.00
$6,000.00
$8,000.00
$10,000.00
$12,000.00
$14,000.00
$16,000.00
$18,000.00
Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 Jul-08 Aug-08 Sep-08
Longley Building Natural Gas
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Converting Gas to Electricity
$0.00
$500,000.00
$1,000,000.00
$1,500,000.00
$2,000,000.00
$2,500,000.00
Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 Jul-08 Aug-08 Sep-08
UCONN Central Utility Plant Natural Gas
CUP BOILERS
COGEN GENERATION
COGEN DEMAND
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Sample PowerLogic Monthly Report
0
500
1000
1500
2000
2500
UCONN COGEN Supplied Building Electrical Energy Hogs FY08-Current
Average Power (kw)
Demand Peak (kw)
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Conservation Project Types
• Lighting – High Efficiency/Low Wattage
• VFD – Variable Speed Drive on motors/fans
• Occupancy Sensors – Hallways and Stairs
• Energy Star Program – Appliances/Equipment
• CO2 Sensors- Air change optimization
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Previous Conservation Projects Equipment Life Cycle Savings
• Biology Physics Building New (2002)
• Engineering IT Building New (2003)
• Pharmacy Biology New (2005)
• North Parking Garage (2006)
• South Parking Garage (2006)
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New Potential Conservation
• Industry Recruitment/Support – CCEF - Operational Demonstration Program – New Energy Technology Program
• Leasing/Lease Purchase CCEF - CT Solar Lease Program • Property Tax Exemption Property Tax Exemption for
Renewable Energy Systems • State Grant Program C
– CEF - Community Innovations Grant Program – CCEF - On-Site Renewable DG Program – CCEF - Project 150 Initiative – DPUC - Capital Grants for Customer-Side Distributed
Resources
• State Loan Program – CHIF - Energy Conservation Loan – DPUC - Low-Interest Loans for Customer-Side Distributed
Resources
• State Rebate Program – CCEF - Affordable Housing Initiative Solar PV Rebate
Program – CCEF - Solar PV Rebate Program – Furnace and Boiler Replacement Rebate Program
• Utility Grant Program The United Illuminating Company - Energy Conscious Blueprint Grant Program
• RenewablesPortfolio Standard Renewable Portfolio Standard • Alternative Fuel and Vehicle Policies U.S. Department of
Energy's Alternative Fuels Data Center
• Utility Rebate Program – Connecticut Light & Power - Commercial Energy Efficiency
Rebates – Connecticut Light & Power - Energy Opportunities Efficiency
Program – Connecticut Light & Power - Express Rebate Programs – Connecticut Light & Power - Operation and Maintenance
Program
• Alternative Fuel and Vehicle Incentives U.S. Department of Energy's Alternative Fuels Data Center
• Rules, Regulations & Policies • Appliance/Equipment Efficiency Standards Energy Efficiency
Standards for Appliances • Building Energy Code Connecticut Building Energy Code with
Green Building Provisions • Contractor Licensing Solar and Wind Contractor Licensing • Energy Standards for Public Buildings Green Building
Standards for State Facilities • Generation Disclosure Fuel Mix and Emissions Disclosure • Green Power Purchasing/Aggregation Connecticut - Green
Power Purchase Plan • Net Metering Connecticut - Net Metering • Public Benefits Fund
– Connecticut Clean Energy Fund – Connecticut Energy Efficiency Fund
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Building Schedule Reduction Savings Weekend and Holiday Break
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
UCONN Campus Electrical Load
Hourly Average
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Building Schedule Reduction Savings Weekend and Holiday Break
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
Kw
h D
em
and
UCONN Campus Electrical Load
Hourly Average
Modified Building Schedule
[School In Session 12/01 - 12/12] [School Break 12/12 - 12/22]
Weekend Weekend
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Building Schedule Reduction Savings Weekend and Holiday
40
50
60
70
80
90
100
110
120
S
t
e
a
m
F
l
o
w
(
K
p
p
h)
UCONN Campus Steam Use
COGEN Hourly Average
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Example Schedule Reductions Breaks & Holidays
Building Name Occupied
Hours
Revised Occupied
Hours
Total Hours Reduced
Percentagerun time Saved on AHU/FCU
Percentage of
Building’s Energy
Kwh Reduction
Monthly Savings
Music Orchestra & Library
16 10 6 37.5% 40% 1142 $88.19
Field House 17 10 7 41.1% 55% 1072 $82.78
Chemistry 17 10 7 41.1% 40% 1800 $139.00
Engineering & UTEB
16 7 9 43.7% 40% 681 $52.59
Student Union
15 10 5 33.3% 55% 3009 $232.37
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Savings Thumb Rule
Cooling Thermostat Heating Thermostat
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Out Reach Savings Potential Non Automated Lighting
Assumptions Residential Buildings Classroom & Office
Buildings High Tech & Science
Buildings
Lighting Load 20% 40% 30%
Focused Compliance 25% 25% 25%
Example Building South Campus Dorm Torrey Life Science Chemistry
Kwh Savings/Month 1700 2300 7800
$$/Mwh @COGEN Cost 10.38 10.38 10.38
Total Savings/Month $ 170.00 $ 230.00 $ 780.00
Annualized Storrs Savings $28,814 $38,980 $132,203
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Example Resident Hall Setback 3% Savings Per 1°F (proves Rule of Thumb)
Building Name
Square Footage
December 2008 Kwh Data Setback 72°F to 65°F
Average 25%
Mon. Tues. Weds.
Thurs. Set-
point Reduced
Average Delta % Change
Beard 34,878 462 646 409 326 435 109 -33%
Bethune 25,130 419 514 344 254 381 127 -33%
Crandall 34,878 258 323 200 147 229 82 -36%
Flesche 25,130 171 190 144 119 157 38 -24%
French 25,130 256 320 236 192 246 54 -21%
Merritt 25,130 181 297 208 147 195 48 -25%
Grasso 34,878
638 846 645 505 641 136 -21%
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Steam Trap & Line Maintenance Program Potential Savings
• 153 Buildings (7M square feet) Supplied
• ~5,000 Steam Traps on Campus
• Water Make-Up of 33-42 Million Gallons/Year
• $2.2 to 3.0 Million/Year Loss – 11-15% of Total Energy Cost
• 60% of loss occurs in steam lines & traps
• 40% of loss occurs in condensate lines