Presentation solar panels martin

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Presentation solar panels martin

  1. 1. Solar Panels <ul><li>Outline of presentation </li></ul><ul><li>Solar panel technology. </li></ul><ul><li>Solar thermal in domestic dwellings. </li></ul><ul><li>Solar panel orientation. </li></ul><ul><li>System types. </li></ul><ul><li>Installation & cost of the panels. </li></ul><ul><li>Benefits of the systems. </li></ul><ul><li>Drawbacks of the systems . </li></ul>
  2. 2. Solar Panel Technology <ul><li>Energy from the sun-1kW/m ² . </li></ul><ul><li>Converts solar energy into heat & electricity. </li></ul><ul><li>Provides energy for water & space heating. </li></ul><ul><li>Relies on sunlight rather than warmth. </li></ul><ul><li>Used in both residential & commercial buildings. </li></ul>
  3. 3. Orientation <ul><li>2 angles to consider- the horizontal orientation and the angle of tilt. </li></ul><ul><li>The ideal horizontal orientation is South. </li></ul><ul><li>The ideal angle of tilt is approximately 45 °. </li></ul><ul><li>Consideration of shading needed. </li></ul>
  4. 5. Flat plate collectors <ul><li>Most common type. </li></ul><ul><li>Glazed & insulated box. </li></ul><ul><li>Temp range 30-70 ° C. </li></ul><ul><li>Cheaper to install. </li></ul><ul><li>Low collection efficiency. </li></ul><ul><li>Increased panel area required. </li></ul><ul><li>Less efficient in winter. </li></ul><ul><li>More suited to southern climates. </li></ul>
  5. 6. Evacuated tube collectors <ul><li>More efficient system. </li></ul><ul><li>Temp range 30-150 °C . </li></ul><ul><li>Lightweight. </li></ul><ul><li>Better performance in sub-optimal conditions. </li></ul><ul><li>Better performance off-peak. </li></ul>
  6. 7. Sizing & Installation <ul><li>The panels will take up approx. 2-4m ² of roof area. </li></ul><ul><li>Exempt from planning permission-conditional. </li></ul><ul><li>For evacuated tube system 20 - 60 tubes are necessary. </li></ul><ul><li>Consideration must be given to the storage capacity of the cylinder. </li></ul><ul><li>50 litres used per person per day and tanks range from 150-300 litres in size. </li></ul><ul><li>Use a stainless steel cylinder. </li></ul><ul><li>Will heat water to up 80 degrees. </li></ul>
  7. 8. Cost <ul><li>€ 4500- € 6000 approximate cost of installation. </li></ul><ul><li>Greener homes grant available. </li></ul><ul><li>€ 250 per m ²-flat plate collector. </li></ul><ul><li>€ 300 per m²-evacuated tube collector. </li></ul><ul><li>To a maximum of 6m². </li></ul><ul><li>Payback? </li></ul>
  8. 9. Environmental Benefits <ul><li>A renewable energy source. </li></ul><ul><li>Solar panels are non-polluting. </li></ul><ul><li>Solar energy requires no fuel. </li></ul><ul><li>Silent operation- no noise pollution. </li></ul><ul><li>Reduced carbon emissions. </li></ul>
  9. 10. The Drawbacks <ul><li>Lifespan of only 25 years. </li></ul><ul><li>Expensive to install. </li></ul><ul><li>Auxiliary back up required. </li></ul><ul><li>Inefficient in Irish climate. </li></ul><ul><li>Site suitability. </li></ul><ul><li>Energy required to produce the panel. </li></ul><ul><li>An uneconomical decision to use solar panels for domestic dwellings. </li></ul>
  10. 11. Summary of energy saving methods Minor € 100 40 € 4000 ** Install solar panels Minor € 95 18 € 1720 *** Install condensing boiler to replace existing boiler Minor € 230 31 € 7140 *** Replace heating system including pipe work Minor € 60 5 € 325 **** Increasing insulation in loft Minor € 145 3 € 440 ***** Cavity wall insulation to external walls Disruption Savings Payback € - cost Rating Method
  11. 12. Summary <ul><li>Solar energy is free. </li></ul><ul><li>Environmentally friendly solution. </li></ul><ul><li>Better suited to water heating. </li></ul><ul><li>Evacuated Tube system is more efficient. </li></ul><ul><li>Government grant assistance available. </li></ul><ul><li>Perhaps the least cost effective energy saving method. </li></ul>

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