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Solar energy

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  • 1. Solar energy Clearly a better solution! Done by Eddie Lim (21) Clement Chia(9) Kenneth Neoh (16) Koh Jing Yuan (17)
  • 2. Agenda
    • Introduction
    • What are solar panels?
    • Different types of solar panels.
    • What are solar panels made of?
    • How does solar panels work?
    • How are solar panels positioned?
    • Advantages of solar panels
    • Solar panels in HCI
    • Bibliography
  • 3. What are solar panels
    • A device that harvest and convert light to energy.
    • A panel of interconnected assembly of solar cells(PV cells)
    • Used to supply electricity in commercial and residential applications
  • 4. What is Photovoltaic
    • Photovoltaic is the conversion of solar energy to electricity
    • Photovoltaic does not generate heat
    • It is very reliable and requires very little maintanence
    • Generates no noise or pollution
  • 5. Different types of solar panels
    • Monocrystalline solar panels(Single crystal)
    • Most expensive type of solar panel
    • Return electricity rate of 14% to 18%
    • One continuous sheet of silicon with metal sheets nailed to it to increase conductivity.
    • More effective than other panels
    • Most worth it in the long run
  • 6. Different types of solar panels
    • Polycrystalline solar panels(Multi-Crystal)
    • Electricity return rate of 12% to 14%
    • Made up of many individual cells that have metal conducting materials nailed to the side to hold the cells together
    • Cheapest solar panel
    • Lower maintanence cost compared
    • to Monocrystalline solar panels.
  • 7. Different type of solar panels
    • String Ribbon Silicon solar panels
    • Electricity return rate of 12% to 14%
    • The PV cells in a string ribbon panel are made of strips of silicon attached to metal bars that connect the strips to form a cell
    • Production costs are slightly lower compared to Polycrystalline solar panels.
  • 8. Different type of solar panels
    • Amorphous solar panel
    • Lowest electricity return rate of 5% to 6%
    • These panels are not made of crystalline silicon
    • They are composed of a piece of semi-conductor material with a thin silicon film on the top.
    • Not worth it in the long run
  • 9. What are solar panels made of?
    • There are two protective layers on the semiconductor.
    • Solar panel are made of two materials sandwiched together called a semiconductor.
    • The top layer is negatively charged while the bottom is positively charged
  • 10. What are solar panels made of?(2)
    • Consists of million of atoms that produce positive and negative charges
    • Silicon produces the positive or negative charged stimuli
  • 11. How does solar panels work?
    • When sunlight reaches the solar panels, the electrons are knocked loose from the silicon
    • These electrons then move up from the bottom layer of silicon.
    • They then crowd the electrons on the top layer.
  • 12. How does solar panels work?(2)
    • The electrons at the top layer is then collected by external contacts on the surface of the top layer.
    • The electrons then provide power to the electrical system
  • 13. How are solar panels positioned?
    • The positioning of the panels is a major factor in deciding how much sunlight hits the panel
    • Most are stationary but some solar panels move accordingly when the sun moves.
    • In the southern hemisphere, solar panels are placed facing the north.
    • In the northern hemisphere, solar panels are place facing the south.
  • 14. How are solar panels positioned?(2)
    • In winter, the sun is lower compared to the position of the sun in other season, so tilt the panels accordingly.
    • In summer, the sun is higher compared to the position of the sun in other season.
  • 15. Why should we use solar panels?
    • The current energy source for most people is dependent on fossil fuels.
    • Fossil fuels is burnt to produce energy which causes pollution to the environment
    • Fossil fuels are also non-renewable so once it is used up, it will take million of years to be replenished.
  • 16. Why should we use solar panels?(2)
    • Our current energy source is running out and causes pollution to environment.
    • Solar panels do not need fossil fuels and neither does it cause pollution.
    • Solar panels are able to generate electricity as long as there is sun
  • 17. Advantages of solar panels
    • Pollution-free
    • The energy source(Sun) is completely renewable unlike the usage of fossil fuels for electricity.
    • Enables the harnessing of power in remote areas.
  • 18. Advantages of solar panels(2)
    • Solar panels can also be used to provide electricity to places where it might be difficult to construct power lines.
    • Requires very little maintenance
  • 19. Solar panels in HCI
    • Current 84 solar panels in HCI
    • It is estimated that 70 k WH of electricity is generated everyday.
    • Estimated savings of $7,200 per year
    • More environmentally friendly by reducing carbon emission by 8 tons
  • 20. Bibliography
    • &quot;WHAT ARE SOLAR PANELS?&quot;  WHAT ARE SOLAR PANELS? . Solarpanelinfo.com, n.d. Web. 27 Sept. 2011. <http://www.solarpanelinfo.com/solar-panels/what-are-solar-panels.php>.
    • &quot;What Are Solar Panels Made Of?&quot;  Solar Power Is The Future . N.p., n.d. Web. 27 Sept. 2011. <http://www.solarpoweristhefuture.com/what-are-solar-panels-made-of.shtml>.
    • &quot;How Solar Panels Are Made.&quot;  Reuk . N.p., n.d. Web. 27 Sept. 2011. <http://www.reuk.co.uk/How-are-Solar-Panels-Made.htm>.
    • &quot;How Solar Panels Work.&quot;  Trusty Guides . N.p., n.d. Web. 27 Sept. 2011. <http://www.trustyguides.com/solar-panels1.html>.
  • 21.
    • &quot;Positioning Solar Panels.&quot;  Yourgreendreams . N.p., n.d. Web. 27 Sept. 2011. <http://www.yourgreendream.com/diy_panel_position.php>.
    • &quot;Advantages of Solar Power.&quot;  Clean Energy Ideas . N.p., n.d. Web. 27 Sept. 2011. <http://www.clean-energy-ideas.com/articles/advantages_of_solar_power.html>.
    • &quot;Types of Solar Panels.&quot;  Solar Panels . N.p., n.d. Web. 27 Sept. 2011. <http://www.solarpanelcenter.net/Types-of-Solar-Panels.php>.
  • 22.  

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