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Building Energy Efficiency in Virgin Islands


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Miguel Quinones explains how to cut fossil fuel consumption and save money in the Virgin Islands

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Building Energy Efficiency in Virgin Islands

  1. 1. Building Energy Efficiency<br />Lowering fossil fuels consumption<br />Miguel Quinones – Program Specialist – Virgin Islands Energy Office<br />
  2. 2. Grocery shopping analogy<br />How much would you spend on groceries if you only got the bill at the end of the month?<br />How much energy do you use?<br />2<br />Kwh per month?<br />Kwh per day?<br />
  3. 3. Who knows what’s their WAPA bill breakdown?<br />RESIDENTIAL <br />COMMERCIAL<br />3<br />
  4. 4. Who is using all that power? <br />4<br />It depends on your habits!<br />
  5. 5. How much power does each use?<br />Consumption: Energy use over time, ie. 100 watts x 10 hours = 1000 wh or 1 kwh<br />5<br />
  6. 6. Energy Star and Consortium for Energy Efficiency<br />Consumption: Energy use over time, ie. 100 watts x 10 hours = 1000 wh or 1 kwh<br />6<br />
  7. 7. Daylighting<br />7<br />
  8. 8. Water savings<br />Fixtures<br />8<br />
  9. 9. With or without AC? Natural Ventilation vs. Air Conditioning<br />9<br />
  10. 10. Exterior & Interior Insulation<br />Insulated Concrete Form (ICF)<br />is a system of formwork for concrete that stays in place as permanent building insulation for energy-efficient, cast-in-place, reinforced concrete walls, floors, and roofs.<br />Needs exterior and interior finishing.<br />Resistant to hurricanes, also earthquakes if reinforced.<br />10<br />
  11. 11. Exterior & Interior Insulation<br />11<br />Interior Insulation<br /><ul><li>Rigid Foam
  12. 12. Sprayed Foam
  13. 13. Radiant Barrier</li></ul>R-4 R-5 R-6.5<br />
  14. 14. Infiltration<br />Infiltration is the unintentional or accidental introduction of outside air into a building<br />12<br />
  15. 15. How to prevent mold and save money<br />13<br />
  16. 16. Variable Refrigerant Flow Systems<br />They can provide thermal comfort for building occupants. In order of importance:<br />Ventilation<br />Humidity Control<br />Cooling<br />VRF is easier to design and offers space-saving features. Its modular format lends itself to phased installations.<br />Humidity Control – by actively controlling the humidity and temperature at the same time, mold growth can be prevented. Traditional air conditioner systems overcool the spaces in order to remove the humidity.<br />Energy Efficiency – the compressors on these units vary the speed up and down to meet the requirements, keeping the space at constant conditions and preventing duct loss.<br />Zoned Comfort - each individual zone can have personalized comfort.<br />Quiet Operation– many Indoor and outdoor units are very quiet so they can be placed just about anywhere.<br />Lower Lifecycle Cost - operate with minimum energy usage. Only service the zones that need it, which allows for less required maintenance.<br />14<br />
  17. 17. Stop the waste<br />15<br />
  18. 18. Watch it like a hawk<br />16<br />
  19. 19. What will the price of barrel of oil in 4 years?<br />17<br />
  20. 20. Energy Efficiency & Renewable Energy can help<br />18<br />Incandescent light bulb = 40 watts/hour $2 life 20,000 hours<br />Lifecycle costs = $2 x 2.5 + 40watts  x $0.42kwhrx 50,000hr1000=$845<br />LED light bulb = 8.7 watts (40 watts equivalent) /hour at $18 life 50,000 hours<br />Lifecycle costs = $18 + 8.7watts x $0.42kwhrx 50,000hr1000=$200.7<br />Renewable energy (solar) = $6 watt installed @ 20% efficiency <br />In order to power 40 watt light bulb @ 20% efficiency 200 watts are necessary = $1200 vs. $261<br />Total costs $1205 vs. $279<br /> <br />
  21. 21. Rent or Own?<br />Own<br />If you plan to keep the home and appliances for just a few years it makes sense to invest.<br />The initial investment is steep, but return on the investment is better than keeping the money in the bank.<br />Some financial incentives are available: rebates, loans, tax credits. <br />The value of the building will also go up.<br />Rent<br />When entering into a lease, request an energy assessment of the property.<br />When renewing a lease, negotiate with the landlord, it benefits both if the usage is the same.<br />Landlords can set electricity consumption limits for leases with power included.<br />19<br />
  22. 22. Where are we going?<br />20<br />
  23. 23. Thank you!<br />For more information please:<br />Contact Miguel Quiñones ,Virgin Islands Energy Office at 340-714-8436<br />• E-mail<br />Join the EDIN USVI Energy Efficiency Working Group blog at<br />We look forward to helping you save energy and money while preserving our environment for current and future generations.<br />21<br />