SOLAR POWER PLANT SUBMITTED BY Sindhu Nathan 1 st ece ‘b’ sec
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SOLAR POWER PLANTSUBMITTED BYSindhu Nathan1st ece ‘b’ sec
WHAT IS SOLAR ENERGY?SOLAR ENERGY RADIANT LIGHT AND HEAT FROM THE SUN IS HARDNESSED USING A RANGE OF EVER-EVOLVING TECHNOLOGIES.
SUCH AS SOLAR HEATING, SOLAR PHOTOVOLTAICS, SOLAR THERMAL ELECTRICITY, SOLAR ARICHITECTURE AND ARITIFICAL PHOTOSYNTHESIS.
BASIC PRINCIPLE OF SOLAR ENEGY
Solar radiation is reduce in intensity in the atmosphere by dust,clouds,haze and fog.
The radiation strikes a solid or liquid, it is absorbed and transformed in to heat energy.
The heat energy is collected in a fluid generally water.
This energy can be used in a solar heater or drier or can trated type collector is used to collect or parabolic concentrated the solar energy.
ARRANGEMENTOF SOLAR POWER PLANT
SOLAR COLLECTORFLAT PLATE COLLECTOR.CYLINDRICAL PARABOLIC CONCENTRATOR COLLECTOR.
FLAT PLATE COLLECTOR
Head is from the absorber plate to water which is circulated in the copper tubes through the flat plate collector.
It is placed facing the general drection of the sun.
Material used for plate is copper, steel or aluminium.
The thickness of the plate is 1to 2mm. Front cover is made up of glass and
transparent to the incoming solar radiation.
Cylindrical parabolic concentraor collectorConcentrator collectors are reflecting type
utillising mirrors.The reflecting surface is parabolic mirror.The solar energy falling on the collector
surface is rereflected and foccused along a absorber tube.
Large quantity of energy falling on the collector surface is collected over a small surface.
The temperature of the absorber fluid is very higher than flat plate collector.
Butane boilerThe water heated in flat plate solar collector to 80*c is used for boiling butane at high pressure in the butane boiler.
Boiling point of butane is about 50*c.
TURBINE
TURBINEThe butane vapor generated at high pressure
in the boilers used to run the vapour turbine which drives electrical generator.
The vapour coming out of the turbine at low pressure is codensed in a condenser using water.
The condensed liquid butane is fed back to the butane boiler using feed pump.
Tower concept of power generationThe tower concept consists of an array of
plane mirrors or heliostats are individually cotrolled to reflect radiations from the sun in to boiler mounted on a 500 metres high tower.
Steam is generated in the boiler temperature up to 2000*k.
Electricity is generated by passing stream through the turbine coupled to a generator.
Application of solar energy
SOLAR ENGINES FOR WATER PUMPING.SOLAR WATER HEATERS.SOLAR COOKERS.SOLAR DRIERS.SOLAR FURNACES.PHOTO-VOLTAIC CONVERSION(SOLAR
CELLS)SOLAR POWER GENERATION.
ADVANTAGESSun is essentially an infinite source of energy.
The solar energy is a very large inexhaustible and renewable source of energy.
It is enviromentally very clean and is hence pollution free.
It is dependaple energy source without new requirements of highly technical and specilaised nature for its wide sperad utilization.
It is the best alternative for the rapid depletion of fossil fuels.
DisavantagesIt is available in a dilute form and is at low
potential. The intensity of solar energy on sunny day india is about 1.1kw/metre area.
Solar energy is not available at night or during cloudy or rainy days.
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