solar furnaces presentation

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Solar Furnaces Azeez Akeem Abiodun 40432 Ibrahim Jumal 40433 Cooper Kollie Lackay 40447 turer: Prof. Ezidor Ntsoenzok

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Page 1: Solar furnaces presentation

Solar Furnaces

Azeez Akeem Abiodun 40432Ibrahim Jumal 40433Cooper Kollie Lackay 40447

Lecturer: Prof. Ezidor Ntsoenzok

Page 2: Solar furnaces presentation

Sun: Power house of the solar system

The Sun is by far the largest object in the solar system. It contains more than 99.8% of the total mass of the Solar System (Jupiter contains most of the rest).

diameter: 1,390,000 km. mass: 1.989e30 kg temperature: 5800 K (surface) 15,600,000 K (core)

The sun’s energy output (3.86 x10 26Watts) is produced by nuclear fusion reaction.

The sun [8]

Page 3: Solar furnaces presentation

What are solar furnaces?Solar furnace is a device that uses an array of mirrors to redirect and concentrate the sun’s rays onto a small surface area thus producing extremely high temperature.

The temperature can go as high as 3500o C.

http://stwww.weizmann.ac.il

Page 4: Solar furnaces presentation

History of Solar furnaces

Legend claims that Archimedes used polished shields to concentrate sunlight on the invading Roman fleet and repel them from Syracuse.

Archimedes “heat ray” gun. (a legend only)[1]

Page 5: Solar furnaces presentation

History of Solar furnaces cont’d By focusing sunlight over flammable materials using lenses,

combustion was generated, experiment conducted by Lavoisier Circa 1770s.

The French chemist Lavoisier experimented with concentrating solar energy using a large parabolic mirror.[1]

Page 6: Solar furnaces presentation

History of Solar furnaces cont’dIn 1861, Mouchout developed a steam engine powered entirely by the sun. He produced the first solar steam engine in history in 1866 by using a parabolic trough.

Page 7: Solar furnaces presentation

History of Solar furnaces cont’d The solar furnace in Mont Louis, France, built in 1949 by

Professor Félix Trombe, was the first solar furnace in the world.

In 1993,the solar furnace was used for industrial and manufactured products such as the firing of ceramics, and bronze and aluminum products.

The solar furnace in Mont Louis [5]

Page 8: Solar furnaces presentation

Fundamental of Spherical mirror

A spherical mirror is a mirror which has the shape of a piece cut out of a spherical surface. There are two types of spherical mirrors: concave, and convex.

Image formation by a concave mirror[2]

Page 9: Solar furnaces presentation

How solar furnaces work? The operation principle of a solar furnace is quite simple. It

entails the use of two mirrors, plane mirror and parabolic mirror. The plane mirror is known as Heliostat and is angled such that it directs parallel beam of light to the parabolic mirror. The parabolic mirror then brings the light beam to focus at the focal point.

When the number of mirrors is increased, then it is possible to achieve energy and heat levels where one can actually boil water, cook food or even melt metals!. The amount of energy and efficiency of the solar furnace relay completely on how accurate the mirrors are focused on one point.

Page 10: Solar furnaces presentation

How solar furnaces work?

Page 11: Solar furnaces presentation

Types of solar furnaces

There are two types of solar furnaces:

Direct solar furnace

Heliostat solar furnace

Page 12: Solar furnaces presentation

General uses of solar furnaces

Running Steam Turbines for Solar Power Plants

Cook Food and Boil Water in a Solar Oven

Produce Hydrogen Fuel

Perform Scientific Experiments Which Require Extreme Temperatures Without Pollution

Reduce the Need to Burn Fossil Fuels

Reduce the Need to Cut Down Forests For Firewood

Page 13: Solar furnaces presentation

Application of solar furnaces in Africa

Domestic uses− Cooking− Heating of water

Agricultural uses− Drying of farm produce− Incubation of chicken

Industrial uses− Recycling of waste− Welding of machine parts

Page 14: Solar furnaces presentation

Application of solar furnaces in Africa

 Small natural convection solar dryer design.[4]

Page 15: Solar furnaces presentation

Impact of Solar furnaces in Africa

Environment− Prevention of desert encroachment− Decrease in overdependence of fossil fuel− Global warming

Economic− Recycling of waste− Recycling of metal scrap

sun’s rays are focused on the crucible holding the ore [3]

Page 16: Solar furnaces presentation

State of art designs of solar furnaces

Page 17: Solar furnaces presentation

State of art designs of solar furnaces

high power concentrated solar power stations [9]

Page 18: Solar furnaces presentation

Prospect of solar furnaces

It is believed that solar furnaces can be used in manufacturing in the production of aerospace products, defense products, and in electronics.

Solar furnaces also could be used to break down and destroy toxic waste.

In these uses the highflux solar furnace would replace laser furnaces and furnaces using fossil fuels.

Solar furnace application can be expanded to metallurgical industries

Page 19: Solar furnaces presentation

Limitation of Solar furnace Solar furnace technology has existed for many years but has never

been fully explored or used on a widespread commercial basis.

It is unclear if solar furnaces will ever be used on any type of scale because of the limitations in their placement and use.

Large solar concentrators are expensive.

They occupy large amount of space

Page 20: Solar furnaces presentation

Innovative Ideas Solar energy can be used in baking of pastries. It can also be used in firing earthware materials like

clay pots e.t.c More awareness must be created to enlighten people

on the usage and advantages of solar furnace.

Page 21: Solar furnaces presentation

Conclusion

Solar furnace technology has existed for many years but never has been fully explored or used on a widespread commercial basis.

It is unclear if solar furnaces will ever be used on any type of scale because of the limitations in their placement and use.

However, with research and development, there could be breakthroughs that will improve the technology and/or lower the cost.

Page 22: Solar furnaces presentation

References1. http://www1.eere.energy.gov/solar/solar_time_1900.html2. http://stwww.weizmann.ac.il/energy/EnergySources/Solar/

SolarFurnace/FSolarFurnace16.htm3. http://stwww.weizmann.ac.il4. Solar Energy: Fundamentals and Applications By Garg &

Prakash, H. P. Garg5. http://www.technologystudent.com/energy1/solar4.htm6. http://www.climatetechwiki.org/technology/jiqweb-edf7. www.constructionphotography.com8. http://nineplanets.org/sol.html9. http://www.cmigroupe.com/

Page 23: Solar furnaces presentation