SOLAR UPGRADE TOWER
- 1. SOLAR UPDRAFT TOWER Presented by, MOHAMMAD ASHFAQ 8th sem
- 2. Energy crises Renewable energy Solar energy Solar updraft tower Parts of solar updraft tower Energy storage in collector Future scope and economical benefits Application of Solar updraft tower Advantages and Disadvantage Conclusion content
- 3. Currently earths most of the Non renewable energy is depleted by human needs. Some of the Non renewable energy resources are Natural gas Petroleum Coal Nuclear energy Energy Crises
- 4. Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale. Wind energy Hydro energy Tidal energy Solar energy Renewable Energy
- 5. Solar energy refers to the conversion of the sun’s rays into useful forms of energy. Implemented in these way: Solar cells Solar heaters Parabolic dishes SOLAR TOWER Solar energy
- 6. The solar updraft tower is renewable type power plant. Solar updraft towers are like an inverted funnel, with a wide skirt to collect air to then turn a turbine in the tower Solar updraft tower
- 7. Collector Chimney or tower Turbine Parts of solar updraft tower
- 8. Collector is the part, which is used to produce hot air by green-house effect. It is usually 5-6 meters high and covers a very large area about thousands of m² The larger the area, the more energy generated from the chimney. Covering materials may be different, such as; glass, plastic film or glazed collector. The most efficient one is glazed collector. It can convert up to 70% of irradiated solar energy into heat. Collector
- 9. Collector figure Inside view of collector area
- 10. Tower is a pressure tube with low friction loss. Efficiency of the plant is proportional to the tower height. Air velocity at the bottom of tower reaches about 15m/s. There are 2 types of different chimneys using for the plant 1:Free standing chimney 2:Guy chimney Chimney or tower
- 11. Turbines are used to convert kinetic energy of air into the mechanical energy. Turbines are placed horizontally in chimney, vertically in the collector. In order to obtain maximum energy from the warmed air, turbines blades should cover all the cross-sectional area of the chimney. To do this, one big turbine or a few small turbines should be used in chimney Turbine Inside view of turbine
- 12. Since collector produce hot air by greenhouse effect to produce electric during the night, tight water filled black tubes are placed under the roof as seen in figure The water heats up during the day time and emits its heat at night Energy storage in collector
- 13. One 200MW power station provide enough electricity for around 200,000 typical household Will reduce production over 900,000 tones of green house gases annually Net energy payback is estimated to be 2-3 years. Future scope and economical benefits
- 14. Renewable source of energy is used. Continuous energy is available. Unlike other power plants no cooling water is required. Raw material needed for construction are easily available. Application of Solar Updraft Tower
- 15. Renewable source of energy is used It can be operated in day as well as night . It is releases any greenhouse gases . Low maintenance No pollution Needs no cooling water Simple design Advantages
- 16. Requires large area of flat land. Not adequate for earth quake prone areas. Areas with frequent sand storms' should be avoided. Disadvantages
- 17. Current energy production from coal and oil is damaging our environment and non renewable energy sources . SOLAR ENERGY IS THE ANSWER Technology for the use of solar energy must be: -Be simple and reliable -Be accessible to the technologically less developed countries that are sunny and often have limited raw materials resources. Conclusion
- 18. SOLAR UPDRAFT TOWER MEETS THESE CONDITIONs!!!!
- 20. Thank You
Editor's Notes
- #2: Smeday renewable energy will b the only way to satisfy human needs. Renewable energy is the gift of nature to us and consumption of energy is proportional to progress of makind As we all knw demand of
- #4: Some of the rnewable energy resources are
- #5: Energy made frm resources which mother nature provide us .clean,green
- #6: solar energy represents totally non polluting energy resource that can be utilized economically to supply man’s energy needs for all time.
- #7: Imagine huge circular green house ,around 4 miles in diameter .tower 3000 feet into the atmosphere.what I hve described is c/d st 1st en-visioned in 20th century and prototype was used by spain to sme success.that failed due to guy wires were not corrosion safe . But now it is making a bit come back. It uses the combination of both solar n wind It is a large inverted funnel with turbine inside it , in the centre of large collecter area .
- #9: Larger area more energy open at the periphery , Material high tranperancy to solar spectrum and low transperancy to infrared ray
- #11: Thermal engine of plant ., the pressure difference in the tower isproportional to itsheight, so maximizing the height of the tower is critical to improving the efficiency of thetower
- #12: Horizontal chimney vetical collector This rotational energy is converted into electrical energy.to maximise the energy frm warmed air the turbine blade shuld cover max. area
- #16: Soil under collector work as a natural collector so it work in day night. Gases co2 n methane Less maintainance,even 3000 ft tower require only 7 member,cash crops
- #18: Accessible to the technologically less