Wood fuel presentation

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DT117/4 Sustainable Build & Design - Class Presentations

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Wood fuel presentation

  1. 1. WOOD FUEL David Gilloughley
  2. 2. WOOD FUEL <ul><li>Renewable </li></ul><ul><li>Sustainable </li></ul><ul><li>Carbon-neutral source of heat, electricity and bio-fuel </li></ul><ul><li>Abundant </li></ul><ul><li>Accessable </li></ul><ul><li>Clean </li></ul>
  3. 3. Fossil Fuels <ul><li>Oil & Coal </li></ul><ul><li>High Prices </li></ul><ul><li>Serious Damage </li></ul><ul><li>Global Warming </li></ul>
  4. 4. Disadvantages of Wood Fuel <ul><li>Wood must be dry </li></ul><ul><li>Storage problems </li></ul><ul><li>Chimney fire-hazard </li></ul><ul><li>Inefficiency of heating units </li></ul><ul><li>Methods of wood fuel preparation </li></ul>
  5. 5. Carbon Neutral <ul><li>CO2 released when wood is burned is no greater than that of CO2 absorbed by a young growing tree. </li></ul><ul><li>Mature tree not a net absorber </li></ul><ul><li>Harvest & Recycle carbon from young/regenerated trees(coppice) </li></ul>
  6. 6. Sources <ul><li>Conventional Forestry </li></ul><ul><li>Large amount of forest land </li></ul><ul><li>Openings for farmers </li></ul><ul><li>(SRF) Short Rotation Forestry </li></ul><ul><li>3 year cycle </li></ul><ul><li>Willow tree </li></ul>
  7. 7. How Wood Burns <ul><li>Water is removed through evaporation </li></ul><ul><li>Chemically – wood breaks down into charcoal, gas and volatile liquids with CO2 and water being the main end products </li></ul><ul><li>Charcoal burns forming CO2 directly or with an intermediate conversion to carbon monoxide </li></ul>
  8. 8. Wood Fuel <ul><li>86% total energy requirement </li></ul><ul><li>€ 5 billion spent on energy per year </li></ul><ul><li>Large outflow of cash </li></ul><ul><li>Help reduce our import dependance </li></ul><ul><li>Improve our trade balance </li></ul>
  9. 9. Types of Wood Fuel <ul><li>Firewood (mechanical processors) </li></ul><ul><li>Wood Pellets – compressed saw dust </li></ul><ul><li>Wood Chips – wood left to dry for 6 months </li></ul>
  10. 10. Some Interesting Facts <ul><li>1000 litres of home-heating oil = 6 tonnes of dried chips = 2.5 tonnes wood pellets </li></ul><ul><li>Large detached house (200 sq m) 14 tonnes of wood chips per year or 6 tonnes of wood pellets </li></ul>
  11. 11. Wood Heating Options <ul><li>Tradition wood heat stove or fireplace </li></ul><ul><li>Pellet Stove </li></ul><ul><li>Wood Furnace </li></ul>
  12. 12. Conclusion <ul><li>Long term alternative heat source </li></ul><ul><li>More common in recent years </li></ul><ul><li>A lot of work </li></ul><ul><li>Play a big part in heating homes in the future </li></ul>
  13. 13. Any Questions?
  14. 14. <ul><li>Thank you for your time </li></ul>

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