seminar on solar power generation

7/31/2019 Seminar on Solar Power Generation

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Seminar on solar power

generation

Gagandeep

80701509002

Mandeep Singh

80701509006


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Introduction

Solar thermal power system alsoknown as concentrating solar powersystem use concentrated solar

radiation as high temperature energysource to produce electricity usingthermal route. In this process ofconversion of solar energy into heatenergy an incident solar irradiation iscollected and concentrating solarcollector or mirrors.


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Solar collectors

Solar collector are used to produceheat from solar radiation. Hightemperature solar energy collectorsare basically of three types;

1.parabolic trough system.

2.power tower system

3.parabolic dish system


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Parabolic trough system

Parabolic trough system at the receivercan reach 400`c and produce steam forgenerating electricity

Parabolic trough power plant are linefocusing solar thermal electric power

Trough system use the mirrored surface oflinear parabolic concentrator to focusdirect solar radiation on the absorber


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Pipe running along the focal line ofthe parabola. The heat transfer fluidinside the absorber pipe is heated

and pumped to the steam generatorwhich in turn is connected to a steamturbine.


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Power tower system

The reflected rays of the sun arealways aimed at the receiver wheretemperature well above 1000c can

be reached. A heliostat is a device that tracks the

moment of the sun which is used toorient a mirror of field of mirrorsthroughout the day to reflect sunlight onto a target receiver.


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Parabolic dish system

Parabolic dish system can reach 1000c atthe receiver and achieved the highestefficiencies for converting solar energyinto electricity

The parabolic system uses a parabolic dishshaped mirror or a modular mirror systemthat approximate a parabola andincorprate two axis tracking to fcous onthe sunlight into receiver located at thefocal point of the dish which absorber theenergy and convert into thermal energy


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Solar chimney

This is a fairly simply concept. The solarchimney has a tall chimney at the centreof the field which covered with glass. The

solar heat generate hot air in the gapbetween the ground and the gall coverwhich is then passed through the centraltower it is upper end due to density

difference between relativly cooler airoutside the upper end of the tower andhotter air inside tower.


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Solar thermal power generation

program of India

In India the first solar thermal powerplant of 50kw capacity has beeninstalled by MNES following the

parabolic trough collector technologyat Gwalpahari , Gurgaon

A solar thermal power plant of140mw at Mathania in Rajasthan hasbeen proposed and sectioned by thegovernment in Rajasthan


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Photovoltaic

Semiconductor materials such as siliconare used in photovoltaic solar cells. Inthese cells incoming photons positive or

negative charge carriers. This produce anelectrical voltage and electrical current canbe derive a load. Since solar cells aremodular they can be assembled in unit of

any size. An converts DC voltage to ACany feed at the solar power into the grid.


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Solar thermal power plant

Of the various types of solar thermalpower plant, parabolic torch and solartower plants are described in more detailbellow.

The trough collectors that make up troughpower plant are large cylindrical parabolicmirror that concentrate that sunlight on aline focus several are these collectors areinstalled in row about a hundred meterlong and the total solar field is composedof such parallel rows.


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Area of operation

The areas where photovoltaic systemand solar thermal power plant canoperate overlap only an the narrow

range. due to their modularityphotovoltaic operation cover a widerange from less than one watt toseveral megawatt and photovoltaic

system are able to operate asstandalone system as well as gridconnected system.


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Solar thermal power plants can workin both area as well, dish/stirlingsystem are small units in the kilowatt

range. The mentioned parabolictrough and solar tower power plantsoperate only in the megawatt range.


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Future perspectives

Although small photovoltaic system andphotovoltaic stand alone system today arealready competitive with conventionalelectricity supply system the solution forgrid connected system is totally different.their cost can be improved if they areintegrated into buildings, however if thereis no significant increase in fossil fuel

prices, large grid photovoltaic system wellstill depend upon the governmentalsupport in the mind term.


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Application

A solar power generation plant is a goodoperation of electrification in area that arelocated away from the grid line or where

other source are neither available a solarpower plant of the size 10-100kw dependsupon the load demand. this coupled withthe low gestation period, simple operation

and maintance are resulting insulation ofsolar power plant in remote areas of manystates need electrification.


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conclusions

Solar thermal and photovoltaic electricitygeneration are two promising technologiesfor climate compatible power with suchenormous potent ional that they could

cover more then just the presentworldwide demand for electricityconsumption. Photovoltaic system haveadvantage for low power demand standalone system and building-integrated grid-

connected system. solar thermal powerplant are best operated in large grid-connected system.


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seminar on solar power generation

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