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Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
Solar  energy 1
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Solar energy 1

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  • 1. NAME:D.BALAJI CONTACT:(BALAJI.BALA005@GMAIL.COM ) DEP:I.C.E YEAR: 1ST Sri ram Polytechnic college Perumalpattu thiruvallur dist. Pin code:602 024 Resent trent in SOLAR ENERGY
  • 2. Solar energy is a one of the source which converts light energy into direct electrical energy
  • 3. Working The solar rays fall on the top layer of p-type semiconductor the electrons from valence band get promoted to the conduction band and cross the P-N junction . there is potential difference between two is created. Hence the current is generated
  • 4. Simply put, efficiency refers to the process of converting light energy to electrical energy by the PV panel. Construction :
  • 5. they require little maintenance and have a long lifetime. Compared to other renewable sources they also possess many advantages  The most common type of PV panel today is manufactured from silicon. There are several variants on silicon- based PV panels such as crystalline and non-crystalline. Crystalline silicon PV panels currently dominate the market, with nanocrystalline silicon being the most common.
  • 6. GENERAL FACTS Solar Energy is better for the environment than traditional forms of energy. Solar energy has many uses such as electricity production and heating of water through photovoltaic cells and directly for drying clothes. Solar energy can also be used to heat, cook food ,swimming pools, power cars, for attic fans, calculators and other small appliances. It produces lighting for indoors or outdoors.
  • 7. Facts about Solar Energy systems: •A home solar system is typically made up of solar panels, an inverter, a battery, a charge controller, wiring and support structure. • 1-kilowatt home solar system consists of about 10-12 solar panels and requires about 100 square feet of installation area. • kilowatt home solar system will generate approximately 1,600 kilowatt hours per year in a sunny climate (receiving 5.5 hours of sunshine per day) and approximately 750 kilowatt hours per year in a cloudy climate (receiving 2.5 hours of sunshine per day).
  • 8. Organic and thin-layer PV cells Organic solar cells use carbon-based polymers based upon molecules such as fullerenes while thin-layer silicon PV employ additional light-trapping techniques with a thinner silicon layer Organic cells, however, have efficiencies of less than 10% and need to be improved before they are viable for commercial use.
  • 9. Advantages  They are particularly useful where there is no national grid and also where there are no people such as remote site water pumping or in space.  Solar cells are use in calculators, electronic watches, radios and T.V  Solar cells are also used in store energy in Ni-Cd batteries and Lead-acid batteries  The most common type of PV panel today is manufactured from silicon.
  • 10. A schematic of a PV cell. Sunlight passing through the glass (grey) and anti-reflective layer (yellow) strikes the p-type silicon (blue), releasing free electrons from the silicon atoms in that layer. The electrons are attracted to the positively-charged n-type silicon (red). Connecting the cell to an electrical circuit through the electrical contacts (green) will provide electrical energy to drive a load (e.g. light bulb).
  • 11. The most common type of PV panel today is manufactured from silicon. There are several variants on silicon-based PV panels such as crystalline and non-crystalline
  • 12. “Integrating a high-quality film of silicon nanoparticles 1 nanometer in size directly onto silicon solar cells improves power performance by 60 percent in the ultraviolet range of the spectrum,” Nanoparticles can improve efficiency
  • 13. Solar panels, shown here, are used to generate electricity for a small town near Tempe.
  • 14. Current Limitations of Solar Panels The various silicon PV panels differ in their efficiency.
  • 15. How to Use Solar Energy at Night? Molten salts can store the sun's heat during the day and provide power at night

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