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Home My WebLink AboutCrooked Creek Final Report Village End Use Effic Measures 2008 Village End Use Energy Efficiency Measures Program AEA Grant # 2195234 Administered by Alaska Building Science Network Crooked Creek Final Report Community Summary 5 community buildings and 3 teacher housing units received energy efficiency upgrades: Office Building, Washeteria, School Main Building, School Gym, Generator Shed & Teacher Housing Retrofits Completed: November 2007 – November 2008 Village-Wide Lighting Retrofit Summary: • Retrofitted 127 light fixtures with electronic ba llasts & T8 lamps • Installed 64 compact fluorescent light bulbs • Installed 21 T5 linear fluorescent fixtures in the School Gym • Pre-retrofit energy use for all lighting: 25.765 Kilowatts • Post-retrofit energy use for all lighting: 13.085 Kilowatts • Energy savings projection: 12.680 Kilowatts • Pre-retrofit to post retrofit energy reduction: 49% • Estimated Annual Savings: kWh Rate (as of 11/19/2008): $0.85 Fuel Cost (FY 2007 Ave): $3.19 Comparative Comparative Hours Per Day/ Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs Locally Estimated $22,068.1 2257.08 $7,200.08 4 Hours/day $10,771.10 1101.65 $3,514.27 7 Hours/day $18,849.50 1927.89 $6,149.97 10 Hours/day $26,927.90 2754.13 $8,785.66 • Total project cost for all measures: $ 37,775 • Simple Payback (lighting measures only, using 7 hours/day lighting use run-time): 2 years • Total village wide in-kind contribution: $ 7,813.00 Additional Energy Efficiency Measures: 2 Programmable thermostats installed in the Water plant / Washeteria and School Bus barn. Heat Recovery Project for City Water Plant / Washeteria 2 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Native Village of Crooked Creek Owned Buildings 2 buildings owned by the Native Village of Crooked Creek received energy efficient lighting upgrades as follows: Office Building, Water Plant / Washeteria, • Lighting upgrades completed in November 2007 • Retrofitted 42 light fixtures with electronic ballasts & T8 lamps • Installed 14 compact fluorescent light bulbs • Pre-retrofit energy use for all lighting: 4.89 Kilowatts • Post-retrofit energy use for all lighting: 2.532 Kilowatts • Energy savings projection: 2.358 Kilowatts • Pre-retrofit to post retrofit energy reduction: 48% • Estimated Annual Savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided 250 Days Per Year Savings Use (gal) Diesel Costs Locally Estimated $6,689.68 684.21 $2,182.61 4 Hours/day $2,003.03 204.87 $653.52 7 Hours/day $3,505.30 358.51 $1,143.66 10 Hours/day $5,007.58 512.16 $1,633.80 Additional Energy Efficiency Measures: Programmable thermostat installed in the Water plant / Washeteria Heat Recovery Project for City Water Plant / Washeteria Programmable Thermostat installed in Water plant / Washeteria provides fuel savings 3 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Native Village of Crooked Creek Office Building Materials Installed Quantity 2-lamp electronic ballast, (2) 25 watt T8 lamps 14 4-lamp electronic ballast, (3) 25 watt T8 lamps 2 CFL-14 W 11 CFL-20 W 1 CFL-23 W 2 • Pre-retrofit energy use: 1950 watts • Post-retrofit energy use: 1028 watts • Energy savings projection: 922 watts • Pre-retrofit to post retrofit energy reduction: 47% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 2000 Hours/year (Est.) $1,566.41 160.21 $511.07 4 Hours/day $783.20 80.10 $255.53 7 Hours/day $1,370.61 140.18 $447.18 10 Hours/day $1,958.01 200.26 $638.83 Note: Two 4-lamp fixtures de-lamped to three 25 watt T-8 lamps each for additional savings. 4 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Water Plant / Washeteria Materials Installed Quantity 2-lamp electronic ballast, (2) 25 watt T8 lamps 17 4-lamp electronic ballast, (3) 25 watt T8 lamps 7 4-lamp electronic ballast, (4) 25 watt T8 lamps 2 • Pre-retrofit energy use: 2940 watts • Post-retrofit energy use: 1504 watts • Energy savings projection: 1436 watts • Pre-retrofit to post retrofit energy reduction: 49% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 4200 Hours/year (Est.) $5,123.28 524.00 $1,671.55 4 Hours/day $1,219.83 124.76 $397.99 7 Hours/day $2,134.70 218.33 $696.48 10 Hours/day $3,049.57 311.90 $994.97 Note: Seven 4-lamp fixture de-lamped to three 25 watt T-8 lamps each for additional savings. Heat Recovery - Additional Measure Materials Installed Welding black pipe components • Pre-retrofit energy use: 3500 gallons of fuel • Projected Post-retrofit energy use: 700 gallons of fuel • Energy savings projection: 2800 gallons of fuel • Pre-retrofit to post retrofit energy reduction: 80% • Estimated annual savings: Comparative Comparative Avoided Diesel Avoided Diesel Use (gal) Costs 3500 gallon usage 2800 $8932.00 3800 gallon usage 3040 $9697.60 4000 gallon usage 3200 $10208.00 • AEA project cost: $ 4,200 • AEA cost payback: .47 years • Total project cost: $ 42,000 • Total cost payback: 4.70 years 5 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Water Plant / Washeteria – Heat Recovery Project Heat Recovery lines were in the ground, stubbed-out and ready for hook-up Heat Exchanger was sitting in the corner feeling out of place Fans in the power plant were regularly dumping true “waste heat” This extra measure was a top priority for the Native Village of Crooked Creek. Heat recovery from the power plant to the near by water plant was in the original design for the new power plant. As construc tion progressed some complications arose, funding ran out and the heat recovery system between the two buildings was never completed. Fuel use and cost for the water plant / washeteria was substantial and with the spiked high costs of fuel in 2008 the cost of fuel was jeopardizing the ability of the Native Village to keep the water plant on -line. Starting in 2007 and up through September, 2008 when the project was completed, ABSN Project Manager Geoff Butler coordinated with ANTHC Remote Maintenance Worker, Bruce Werba and Senior Power Plant and Water Plant Operator for the Native Village of Crooked Creek, Tom Parent for this retrofit. According to Tom Parent who has been responsible for fueling the operations of the water plant / washeteria for more than a decade, pre-retrofit the water plant used 3,800 - 4,000 gallons of fuel annually on average. From past similar heat recovery projects, Bruce Werba stated he expects to see an 80% fuel savings from the measure. The current fuel use goes to heating water loops circulating around the village for household water/plumbing, as well as all the heat required for the washeteria washers and dryers. Additionally the heat recovery will provide heat to bring up the ground water temperature before water treatment and distribution for a 3,000 gallon water tank. The measure is expected to save the Native Village around 3,000 gallons of fuel annually which at an average of say $3.19/gallon equates to $9,570 in savings annually. At that rate the project will pay for itself in under 5 years. At higher fuel prices, which is likely, the payback will be more rapid. AEA grant funds covered approximately 10% of total project costs, or $4,200 for welding black pipe components of the system. The following two-page report is written by Bruce Werba on the function and results of the system. Completed heat recovery lines entering the Water Plant Plumbed and operational heat exchanger harvests hot water from generators and transfers to boiler supply lines Completed heat recovery lines exiting the Power Plant 6 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek 7 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek 8 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Kuspuk School District Owned Buildings 3 buildings and 3 teacher housing units owned by the Kuspuk School District received energy efficient lighting upgrades as follows: Johnny John Sr. School Main Building, School Gym, Generator Shed, Duplex 3-Bedroom side, Duplex 2-Bedroom side, 2-Bedroom Teacher Housing Unit. • Lighting upgrades completed in: November 2008 • Retrofitted 85 light fixtures with electronic ballasts & T 8 lamps • Installed 50 compact fluorescent light bulbs • Installed 21 T5 linear fluorescent fixtures • Pre-retrofit energy use for all lighting: 20.875 Kilowatts • Post-retrofit energy use for all lighting: 10.553 Kilowatts • Energy savings projection: 10.322 Kilowatts • Pre-retrofit to post retrofit energy reduction: 49% • Estimated Annual Savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided 250 Days Per Year Savings Use (gal) Diesel Costs Locally Estimated $15,378.4 1572.87 $5,017.464 4 Hours/day $8,768.15 896.79 $2,860.75 7 Hours/day $15,344.2 1569.37 $5,006.30 10 Hours/day $21,920.3 2241.96 $7,151.86 Programmable T-stat installed in school Bus Barn Additional Energy Efficiency Measures: 1 Programmable thermostat was installed in the School Bus barn. Notes: Since the Bus barn is not classroom or office space that must be maintained at 65 or more degrees during all day-time hours, considerable fuel savings is achievable from programming this heating control to lower temps for longer periods. Ten percent or more fuel savings is expected. 9 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek School Main Building 25 watt T-8 lamps save energy while improving over-all light levels in class rooms and hallways for a better learning environment. Materials Installed Quantity 2-lamp electronic ballast, (1) 25 watt T8 lamp 4 2-lamp electronic ballast, (2) 25 watt T8 lamps 15 4-lamp electronic ballast, (4) 25 watt T8 lamps 5 4-lamp fixture (two)2-lamp ballasts and (4) 25 watt T8 lamps 59 CFL-14 W 2 CFL-20 W 7 CFL-23 W 15 CFL-27 W 4 • Pre-retrofit energy use: 13997 watts • Post-retrofit energy use: 7308 watts • Energy savings projection: 6689 watts • Pre-retrofit to post retrofit energy reduction: 48% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 1800 Hours/year (Est.) $10,227.6 1046.06 $3,336.95 4 Hours/day $5,682.05 581.15 $1,853.86 7 Hours/day $9,943.59 1017.01 $3,244.25 10 Hours/day $14,205.1 1452.87 $4,634.65 Generator Shed Materials Installed Quantity 2-lamp electronic ballast, (2) 32 watt T8 lamps 2 • Pre-retrofit energy use: 168 watts • Post-retrofit energy use: 120 watts • Energy savings projection: 48 watts • Pre-retrofit to post retrofit energy reduction: 29% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 1095 Hours/year (Est.) $44.65 4.57 $14.57 4 Hours/day $40.77 4.17 $13.30 7 Hours/day $71.35 7.30 $23.28 10 Hours/day $101.94 10.43 $33.26 10 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Teacher Housing Compact fluorescent bulbs greatly reduce wattage in teacher housing. Duplex, 3-Bedroom side Materials Installed Quantity CFL-14 W 6 CFL-20 W 2 • Pre-retrofit energy use: 480 watts • Post-retrofit energy use: 124 watts • Energy savings projection: 356 watts • Pre-retrofit to post retrofit energy reduction: 74% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 1500 Hours/year (Est.) $453.61 46.39 $148.00 4 Hours/day $302.41 30.93 $98.67 7 Hours/day $529.21 54.13 $172.66 10 Hours/day $756.02 77.32 $246.66 Duplex, 2-Bedroom side Materials Installed Quantity CFL-20 W 4 CFL-23 W 3 • Pre-retrofit energy use: 435 watts • Post-retrofit energy use: 149 watts • Energy savings projection: 286 watts • Pre-retrofit to post retrofit energy reduction: 66% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 1500 Hours/year (Est.) $364.42 37.27 $118.90 4 Hours/day $242.95 24.85 $79.26 7 Hours/day $425.16 43.48 $138.71 10 Hours/day $607.37 62.12 $198.16 11 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Teacher Housing – 2- Bedroom Unit Materials Installed Quantity CFL-14 W 5 CFL-23 W 2 • Pre-retrofit energy use: 525 watts • Post-retrofit energy use: 116 watts • Energy savings projection: 409 watts • Pre-retrofit to post retrofit energy reduction: 78% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 1500 Hours/year (Est.) $521.14 53.30 $170.03 4 Hours/day $347.43 35.53 $113.35 7 Hours/day $608.00 62.19 $198.37 10 Hours/day $868.57 88.84 $283.39 School Gym T-5 fluorescent fixtures installed in high school gymnasium. T-5 fixtures save energy while greatly improving light levels in large spaces. Materials Installed Quantity T5 fixture, electronic ballast, (2) 54 watt T5 HO 15 T5 fixture, electronic ballast, (3) 54 watt T5 HO 6 • Pre-retrofit energy use: 5270 watts • Post-retrofit energy use: 2736 watts • Energy savings projection: 2534 watts • Pre-retrofit to post retrofit energy reduction: 48% • Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel 250 Days Per Year Savings Use (gal) Costs 1750 Hours/year (Est.) $3,766.94 385.27 $1,229.02 4 Hours/day $2,152.54 220.16 $702.30 7 Hours/day $3,766.94 385.27 $1,229.02 10 Hours/day $5,381.34 550.39 $1,755.75 12 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Crooked Creek – Alaska Building Science Network – T5 Lighting Upgrade Details These retrofits were completed in November 2008. School Gym Length (feet) Width (feet) Ceiling Height (feet) Type of Existing Fixture # of Existing Fixtures Existing Fixture Wattage Total Existing Wattage Existing Foot- candles New Foot- Candles # of New Fixtures New fixtures New Fixture Wattage Total New Wattage 52 41 26’ av, sloping 21’ – 32’, peak runs along the length HPS 150 watt 160 0 62-66 52 15 T-5 2 lamps 114 1710 HPS 250 watt 260 0 6 T-5 3 lamps 171 1026 2132 total sq ft Other School Gym (A) 20 232 4,640 T-5 6 lamps 342 0 Existing light fixtures per row: 4, 8’ & 1, 4’ fixture Other School Gym (B) 5 126 630 Other fixtures (A) 0 Total Existing Watts 5,270 Total New Watts 2736 46 lamps = 230,000 lumins = 52 av fc Percent Savings Pre to Post Retrofit: 48.08% Savings & Payback Calculation for Gym: 1750 New watts / old watts Assume 1750 hrs / year for 250 days/year of use neg 1 (New watts / Old watts x 100 – 100) / 100 Full cost of electricity: $0.85 /kWh Watts of existing lighting: 5,270 New wattage for T5 fixtures: 2,736 Calculation: (Watts) x (hrs/year) / (1000w/kw) x (cost of electr icity) = (cost / year) Existing Cost: $7,834 Retrofitted Cost: $4,067 T5 Materials costs $3,585 Annual Savings: $ $3,767 T5 shipping costs $540 Material & shipping cost of Gym retrofit: $ 4,125 Simple Payback: Materials cost / annual savings = 1.10 years (for retrofit to pay for itself in materials) 13 Alaska Building Science Network – Village End Use Energy Efficiency Program – ’07-’08 Final Report West Region – Crooked Creek Crooked Creek, In-Kind Contribution Tracking Record - ABSN Energy Efficiency Projects: In-Kind Item Dates Hours Contri- buted Hourly Wage Value / Amount Notes Staff time for project contact, introduction, and reviewof intro materials (Number of entities x 1 hour each) 3 $15.00 $45.00 list number of entities Staff time for Attending teleconference (TC/IRA) 3 $15.00 $45.00 list # of staff and wages if possible ($15/hr is an average wage designated for village entity staff). Staff time for Attending teleconference (School) 2 $15.00 $30.00 " Maint. Staff time to accompany Field Manager on building assessments - 1st site visit 4 $15.00 $60.00 list entity and maint staff, add rows as necessary Maint. Staff time to attend ABSN training 6 $15.00 $90.00 list entity and maint staff, add rows as necessary Conservative village office administrative percentage of total project cost less ABSN Admin %. Total project cost = $37,775/village - (our admin percentage , (around 12%) Approx: $4,533) = $33,242 x 5.5% = $1,828 (this 5.5% village admin cost estimate is spread across all entities we work with for the course of the grant for completing all energy efficiency measures. These are primarily for cumulative, otherwise unaccounted time expense for village- based project support. Feb, '07 through $1,828.00 Each time we call, email, or fax a village entity, someone has to receive the communication, review and/or foward the information, follow-up on requests, etc. Wether it is to set-up a teleconference, verify maintenance staff participation in lighting or boiler trainings, set-up in-kind lodging and transportation, lighting trainings, track a shipment, verify completion of lighting in a given building, ship lamps and ballasts out of the village, request a labor reimbursement agreement, or invoice etc, etc. Village expenses for phone charges, copying and fax costs, office supplies, etc are part of this ammount. Lodging for ABSN Field Managers - 1st assessment site visit Oct 29 & 30, '07 2 $60.00 $120.00 Two nights for assessment and stayed with a friend for 2nd visit. Kuspuk SD maint labor for T8 and cfl retrofits in school facilities Dec. '07 73 $15.00 $1,095.00 Our tally sheet labor estimate for retrofitting 85 linear fluorescent and 50 cfl light fixtures is 73 hours @ $15/hr Kuspuk SD cert. electriciain maint labor for T5 retrofits. $4,500.00 Comparable estimate - In-kind labor, provided by school district - includes airfare & per diem and lodging. Native Village of Crooked Creek – Heat Recovery project 2007- 2008 $5,700 Total Project cost to NVCC was approx $42,000. VEUEEM grant funds covered roughly 10% at $4,200, plus $1,500 coordination time, We are listing a full match of $5,700 inkind for this measure. TOTAL $13,513.00