Strategies for Energy Efficiency and Conservation

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Ohio Energy Services Company, Brewer-Garrett, was represented at the Kentucky Energy Management Conference on Dec. 7, 2011. Energy Services Division Manager, Kelly Tisdale, presented "Strategies for Energy Efficiency and Conservation."

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  • Ohio Energy Services Company, Brewer-Garrett, was represented at the Kentucky Energy Management Conference on Dec. 7, 2011. Energy Services Division Manager, Kelly Tisdale, presented 'Strategies for Energy Efficiency and Conservation.'
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Strategies for Energy Efficiency and Conservation

  1. 1. Save 25% Off Your Utility BillsEVEN IF YOU HAVE IMPLEMENTED CONSERVATION MEASURES PREVIOUSLY!Kentucky Energy Management Conference December 7th, 2011 H. Kelly Tisdale C.E.M., LEED AP Energy Services Division Manager The Brewer-Garrett Company 1-800-686-6869 ktisdale@brewer-garrett.com
  2. 2. Agenda  The Need to be Green  Measuring Current Consumption  Benchmarking  Are you considered efficient or not when compared with similar Businesses  Assessing Opportunities  Rebate Programs  Examine Cost and Savings for Energy Conservation Measures  Lighting, Ventilation, Automation, Boilers, Chillers  Sanity Checks – Are savings projections realistic  New Technologies
  3. 3. Greener than Green“The least expensive and most environmentally friendly unit of energy is the one that is never needed!” 100 Watt Light Bulb run year round This represents only about a 50th of what a US household consumes Today‟s technologies can reduce energy consumption up to 75%
  4. 4. 100 Watt Light Bulb  1 MWhr  750 # of Coal  45,000 Cubic Feet (Balloons) of Carbon Dioxide
  5. 5. Reduction in Pollutants for CuyahogaCommunity College Annual Reduction – 10,074,032 kWh Greenhouse Gases 10,600 Tons VOC 262 Pounds NOX 30 Tons Carbon Monoxide 2,100 Pounds SO2 44 Tons Particulates 2,500 Pounds Mercury 270,000 Milligrams
  6. 6. Understanding Utility Bills - Electric Electric Bill 7000 6000 5000 4000 3000 2000 Air Conditioning 1000 0 HVAC Fans July January August November June February May March April October December September Plug Load Lighting kWh Month
  7. 7. Understanding Utility Bills - Gas Gas Utility - MCF of Gas 1200 1000 800 600 400 Heating 200 Cooking and Misc. 0 Hot Water July January August November June February May March April October December September Month
  8. 8. Measuring Current Consumption  Convert everything to mmBtu…  Gas – Total MCF  MCF = 1 mmBtu  Electricity – Total kWh 1 kWh = 3412 Btu  Divide by 1,000,000 = mmBtu  Example  1000 MCF = 1000 mmBtu  100,000 kWh = 341,200,000 Btu = 341.2 mmBtu
  9. 9. Benchmarking  Know the total square footage for you facility – (example = 10,000 Utility = $225k mmBtu=1,341)  Calculate mmBtu per square foot  Example  Total mmBtu = 1,341  Total square footage = 10,000  Total mmBtu per square foot = .1341
  10. 10. Benchmarking Typical mmBtu per square foot  Schools .03 - .08  Universities .10 - .17  Commercial .12 - .15  Industrials .12 - .25  Use EERE at Rutgers  Energy Star
  11. 11. Examining Energy ConservationOpportunities
  12. 12. Examining Energy ConservationOpportunities
  13. 13. Rebate Programs Lighting - Prescriptive Method Will pay $7 per Lamp for T-12 or $1 per T-8 $50 per HID fixture Occ. Sensors, Exit Signs, Parking Lots, Exterior, Motors, VFDs, Vending, Cooling, PC Power Management, etc. - Custom Program $.08 per kWh and $100 per kW Includes anything that reduces electrical load that is permanently installedProcess- application, Pre-retrofit survey, Post Application, and Proof
  14. 14. Examine Energy ConservationOpportunities  Lighting  T-12 to T-8  T-8 to T-8  HID to T- 5  Assume cost at about $1.1 per square foot  Assume savings at $.17 per square foot  Example – 10,000 square foot facility  $11,000 cost  $1,700 annual savings
  15. 15. LED Benefits / Concerns  Operational Savings  Reduced recycling costs, extremely long life, vibration and orientation proof  Energy and HVAC Savings – Up to 50% in some cases  Instant-on capabilities  0-100% dimmability  Color changing  Exceptional lamp lumen depreciation  No UV, No IR, No Mercury  Small size allows for many new designs and ideas from the ground up that could not have been possible before  Drawbacks?  COST!  Glare issues if not properly applied or designed
  16. 16. Established Types ofLED Products  General Illumination Replacements Incandescent Halogen Downlights Linear Landscape Architectural Signage Area
  17. 17. Technologies - OLED  Flexible OLED
  18. 18. Examine Energy ConservationOpportunities  Ventilation  Nearly 40% of your utility cost can come from conditioning outdoor air  ASHRAE requirements allow for different control  Potential Savings = .02 mmBtu per square foot  Typically 2 – 4 year payback
  19. 19. Examine Energy ConservationOpportunities  Building Automation  Savings of 2% to 3% off total Utility  Retro-Commissioning - also 2% to 3%  Cost is Low  Payback typically < 1year to 3 years  Night set-back  Control Strategies
  20. 20.  The first HVAC controllers were pneumatic The use of electromechanical relays in ladder logic, to switch dampers became standardized The relays became electronic switches By 1985, pneumatic control could no longer compete with this new technology By the year 2000, computerized controllers were common Today, some of these controllers can even be accessed by web browsers and PDAs
  21. 21. Building Automation „Energy Harvesting Technology‟
  22. 22. Innovative BAS Solutions will..  Preserve existing investments in control and monitoring devices and integrate them with new standards-based technologies  Access and control through a standard web browser  Combine information from different systems to support better overall facility management  Increase flexibility of vendor selection  Lower operational costs, improved facility operations, reduced energy costs, increased occupant/tenant satisfaction, and greater control, manageability, and security of building operations
  23. 23. Examine Energy ConservationOpportunities  Boilers (15 – 25 year ROI)  Chillers (10 -20 year ROI)  Occupancy Sensors (ventilation)  Rooftops AHU‟s  Processes  Others  Water conservation  Air Dryers
  24. 24. Water Conservation New fixtures  Save nearly 40% of bill Cooling Towers  Deduct Meters Water Cooled Condensers  <1 year to 3 year paybacks Irrigation  Deduct Meters Stormwater Management  Retention Ponds / Pervious Surfaces / Gardens
  25. 25. Sample ProjectECM Investment Annual SavingsLighting $11,000 $1,700Ventilation $12,500 $3,000Auto / Cx $ 5,000 $1,500Mechanicals $15,000 $1,500Totals $43,500 $7,700Payback 5.65 years 29% of bill
  26. 26. Sanity Check < 20% = Very Conservative 20% to 25% = Good Target 25% to 35% = Aggressive Target > 35% = Caution
  27. 27. SAMPLE CASH FLOWFinancedProject: $43,500APR 4.25%Period - Length 15Utility Inflation 5%Total CashFlow: $107,525 10 year $55,955 Annual Annual Cumulative Energy Operational Total Program Auditing Cash Flow Cash Flow Year Savings + Savings Savings Cost Fee* (Savings-Costs) (Saving - Cost) 1 7,700 1,000 8,700 5,347 0 3,353 3,353 2 8,085 1,050 9,135 5,347 0 3,788 7,141 3 8,489 1,103 9,592 5,347 0 4,245 11,385 4 8,914 1,158 10,071 5,347 0 4,724 16,109 5 9,359 1,216 10,575 5,347 0 5,228 21,337 6 9,827 1,276 11,104 5,347 0 5,756 27,093 7 10,319 1,340 11,659 5,347 0 6,312 33,405 8 10,835 1,407 12,242 5,347 0 6,895 40,299 9 11,376 1,477 12,854 5,347 0 7,507 47,806 10 11,945 1,551 13,497 5,347 0 8,149 55,955 11 12,542 1,629 14,171 5,347 0 8,824 64,779 12 13,170 1,710 14,880 5,347 0 9,533 74,312 13 13,828 1,796 15,624 5,347 0 10,277 84,589 14 14,519 1,886 16,405 5,347 0 11,058 95,647 15 15,245 1,980 17,225 5,347 0 11,878 107,525
  28. 28. NEW ENERGY TECHNOLOGIES
  29. 29. Honeywell Wind TurbineCut in Speed < 2 mphBicycle Wheel Design$5000 on market in June 20112kW2,000 kWh per yearAbout 225 watts per hour
  30. 30. Micro Nuclear – Hyperion & Toshiba$50M each…already 100 orders25 MW units (vs. 1000MW Base Load Plant) = 5 New LocomotivesConstruction begins in 20135,000 to 10,00 homes, 40 year life cycle, safe
  31. 31. NanosolarPrinting Solar FilmsPromise of Low Cost = $1 per wattIncrease Efficiencies
  32. 32. Solar WindowsSprayed on Coatings
  33. 33. Hairy Solar Panels19% Efficiency with potential for 40%Compared to 6 to 9% from Thin FilmFlexible
  34. 34. Solar Power and the Fuel CellSolar Panels used for ElectrolysisHydrogen and Oxygen recombine in Fuel CellHeats Domestic WaterPower availability very High – Closed Loop
  35. 35. QUESTIONS?

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