Amit

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SOLAR TOWER TECHNOLOGY

By Mr. Amit Kumar Roll#EEE201110186

Under the guidance of

Mr. RAJESH PANDA

B.TECH. TECHNICAL SEMINAR PRESENTATION-2014

Mr. AMIT KUMAR(ROLL#EEE201110186)

[2]Mr. AMIT KUMAR(ROLL#EEE201110186)


CONTENTSIntroduction

History

System Description

Working Diagram

Advantages

Disadvantages

Applications

Conclusions



INTRODUCTIONSolar power towers generate electric power from sunlight Solar power towers generate electric power from sunlight

by focusing concentrated solar radiation on a tower-by focusing concentrated solar radiation on a tower-mounted heat exchanger (receiver).mounted heat exchanger (receiver).

It uses an array of flat, moveable mirrors(called It uses an array of flat, moveable mirrors(called heliostats) to focus the sun's rays upon a collector tower heliostats) to focus the sun's rays upon a collector tower (the target).(the target).

The high energy at this point of concentrated sunlight is The high energy at this point of concentrated sunlight is transferred to a substance that can store the heat for transferred to a substance that can store the heat for later uselater use



History

Solar technology is not new process. Its history spans Solar technology is not new process. Its history spans from the 7thCentury B.C. to today. We started out from the 7thCentury B.C. to today. We started out concentrating the sun’s heat with glass and mirrors to concentrating the sun’s heat with glass and mirrors to light fires. Today, we have everything from solar-light fires. Today, we have everything from solar-powered buildings to solar powered vehicles.powered buildings to solar powered vehicles.

Solar One, which operated from 1982 to 1988, was Solar One, which operated from 1982 to 1988, was the world’s largest power tower plant. It proved that the world’s largest power tower plant. It proved that large-scale power production with power towers was large-scale power production with power towers was feasible.feasible.



SYSTEM DESCRIPTION

Solar power tower convert sunshine into clean Solar power tower convert sunshine into clean electricity. The technology uses many large, sun-electricity. The technology uses many large, sun-tracking mirrors commonly referred as heliostats to tracking mirrors commonly referred as heliostats to focus sunlight on a receiver at the top of a tower.focus sunlight on a receiver at the top of a tower.

The major components are: The major components are: • HeliostatsHeliostats•Central receiverCentral receiver• Steam turbine or MotorSteam turbine or Motor



HELIOSTAT

•Heliostat is termed Greek word Heliostat is termed Greek word Helios- sunHelios- sun stat – stationarystat – stationary

•A Heliostat is a device that tracks the movement of the A Heliostat is a device that tracks the movement of the sun.sun.

•The reflected sunlight from the heliostats can generate an The reflected sunlight from the heliostats can generate an enormous amount of heat if all are oriented towards the enormous amount of heat if all are oriented towards the same target.same target.



CENTRAL RECEIVER

•Central receiver (or power tower) systems use a field of distributed mirrors – heliostats – that individually track the sun and focus the sunlight on the top of a tower.

•By concentrating the sunlight 600–1000 times, they achieve temperatures from 800°C to well over 1000°C.

•Receiver panel has fluid which collects heat.



STEAM GENERATOR OR TURBINE

•Siemens steam turbines can be operated in plants with all current heat transfer mediums like air, water/direct steam and molten salt.



WORKING DIAGRAM



ADVANTAGES Solar energy comes directly from the sun it is not only Solar energy comes directly from the sun it is not only renewable, but also accessible in any part of the world.renewable, but also accessible in any part of the world.

Solar power is also one of the cleanest forms of Solar power is also one of the cleanest forms of energy, since it creates no pollution, and produces no energy, since it creates no pollution, and produces no greenhouse gases or waste products.greenhouse gases or waste products.

Most manufacturers of solar panels provide twenty-Most manufacturers of solar panels provide twenty-year warranties for their equipment, guaranteeing long-year warranties for their equipment, guaranteeing long-life operation.life operation.



DISADVANTAGESDISADVANTAGES

The most obvious drawback of solar energy is its The most obvious drawback of solar energy is its sole dependence on the sun. Once the weather sole dependence on the sun. Once the weather becomes cloudy or night time strikes, energy becomes cloudy or night time strikes, energy collection comes to a halt.collection comes to a halt.

Huge amount of water and land is required.Huge amount of water and land is required.

Solar panels can also be expensive, because of the Solar panels can also be expensive, because of the materials that are used to create them. This includes materials that are used to create them. This includes portable devices that utilize solar energy.portable devices that utilize solar energy.



APPLICATIONS Solar Powered LED lighting system provides bright Solar Powered LED lighting system provides bright light charged by sunlight. Suitable for wherever the grid light charged by sunlight. Suitable for wherever the grid electricity is unreliable or unavailable.electricity is unreliable or unavailable. In order to supply Electricity for street lights, solar In order to supply Electricity for street lights, solar power tower technologies are used.power tower technologies are used.

These plants are best suited for utility-scale These plants are best suited for utility-scale applications in the 30 to 400 MW rangeapplications in the 30 to 400 MW range



CONCLUSIONIt is very efficiency system can be increased by hybridizing it with the other conventional plants.

Very economy excluding initial cost.

Non pollutant power technology

Can be implemented with alternative like WIND and HYDRO power generation



REFERENCES

• http://en.wikipedia.org/wiki/Concentrated_solar_power

• http://reneweconomy.com.au/2013/how-it-works-solar-power-towers-with-integrated-storage-78892

• http://www.wipp.energy.gov/science/energy/powertower.html

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THANK YOU

Engineering

Amit