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    Add as Friendconcentrated solarpower

    by: Rasmin kumar sahu

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    1 : concentrated Solar Powerplant: a revolution in electricity generation Presented By Rasmin kumar sahu Electrical & Electronics Engineering Technical Seminar On 9/16/2013 1
    2 : 9/16/2013 2 Introduction Why Solar? Creation Of Solar Power The Technology Applications Technological Obstacles Technological Breakthroughs Additional Benefits Conclusions OVERVIEW
    3 : INTRODUCTION Every year, each square kilometer of hot desert receives solar energy equivalent to 1.5 million barrels of oil. Multiplying by the area of deserts world-wide. This is nearly a thousand times the entire current energy consumption of the world. 9/16/2013 3
    4 : WHY SOLAR ? In today's climate of growing energy needs and increasing environmental concern, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy. 9/16/2013 4
    5 : Solar Power 9/16/2013 5
    6 : Many people think of solar power as a few panels on the roof of a house producing hot water or a bit of electricity. But according to reports made by , two German scientists, Dr Gerhard Knies and Dr Franz Trieb, calculate that covering just 0.5 per cent of the world's hot deserts with a technology called concentrated solar power (CSP) would provide the world's entire electricity needs. 9/16/2013 6
    7 : CREATION OF SOLAR POWER Concentrated solar power plants produce electric power by converting the sun's energy into high-temperature heat using various mirror configurations. Mirrors concentrate the sun's rays on a pipe or vessel containing some sort of gas or liquid that heats up to around 400{+o}C and is used to power conventional steam turbines. 9/16/2013 7
    8 : THE TECHNOLOGY Three basic concepts – 9/16/2013 8 1.Dish/Engine System 2. Trough System 3. Power Tower System
    9 : TROUGH SYSTEM Made of long rows of concentrating mirrors Only curved in one direction Track the sun from East to West with surface that focuses sun’s energy Heat transfer fluid runs through pipe that is at the focus of the troughs Heat is transferred to working fluid (usually water) and used to power or drive turbine 9/16/2013 9
    10 : Practical view of Trough type An Acciona solar thermal power plant, located south of Las Vegas. 9/16/2013 10
    11 : POWER TOWER SYSTEM The first large-scale solar energy project in the U.S. 1982 Solar plant with a field of computerized mirrors called heliostats that follow the sun. Heliostats reflect rays towards a central tower where heat is used to produce steam. Steam turns a turbine like in more traditional plants. 9/16/2013 11
    12 : Practical view of power tower system type 9/16/2013 12
    13 : DISH/ENGINE SYSTEM Still under development  it uses the heat from the sun to drive a Stirling engine to generate electricity. The concentrator is a highly reflective mirror dish similar to a very large satellite dish. The very concentrated sunlight (800 times normal) heats a working fluid in contact with the receiver to a temperature of approximately 650ºC. The thermal energy causes the cylinder piston engine to oscillate back and forth at 50 or 60 cycles per second. The piston moves a magnet back and forth inside a coil of wire which generates an AC current. The engine is air cooled by means of a radiator and a closed water based coolant system 9/16/2013 13
    14 : Practical view of Dish/Engine type 9/16/2013 14
    15 : What happens at night? Power is stored during the daytime in molten salt at approximately 1050°F Salt sometimes used to heat graphite which would be used as a heat storage medium? night-time operations are possible! Storage of heat from solar power plants can allow solar power plants to operate around the clock unique because they can generate power when it is needed…day or night…rain or shine 9/16/2013 15
    16 : APPLICATIONS Centralized large-scale (up to 200MWe installed capacity) electricity generation where small and medium sized producers are connected to large transmission grids. Remote applications (from 10kWe installed capacity) which can be used to provide heat and electricity in small villages. Industrial applications where sectors such as food, textile, chemical, etc. will be provided with clean energy in the form of steam, heat or electricity to replace all or part of the fossil fuels needed during their manufacturing processes. 9/16/2013 16
    17 : Technological Obstacles Needs back up or storage system Storage: the solar thermal plans would need just 16 hours of storage to continuously generate electricity Low efficiency increasing efficiency by 20-30% could significantly reduce the cost of electricity 9/16/2013 17
    18 : Technological Breakthroughs Future solar collectors will be mass-produced using… lower cost flat mirrors, rather than curved troughs and sit low to the ground reducing wind loads Fast construction (1-2 years) Because CSP systems use conventional steam turbines, hybrid configurations of trough solar and natural gas turbines (oil and coal are possible too) can be built for continuous electrical power on rainy days and short winter days.  9/16/2013 18
    19 : Additional Benefits The peak demand period - during the hottest part of the day, when air conditioners are running in the office and home - coincides with the period of time when the solar thermal power plant is at peak production Steam is emitted rather than greenhouse gases 9/16/2013 19
    20 : Conclusion Solar thermal energy could lead the India into a renewable future. Cost reduction of producing solar thermal energy could make this the most viable type of available energy. 9/16/2013 20
    21 : ? Queries 21 9/16/2013
    22 : 9/16/2013 22

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