A Seminar Report On
Transcript of A Seminar Report On
A Seminar Report on
NON CONVENTIONAL ENERGY RESOURCES(MAGNETO HYDRO DYNAMIC POWER GENERATION)
Submited by Mr.Ch.Laxmi Narayana (08471A0224)
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CONTENTS
Introduction Principle of MHD Types of MHD’s Open cycle MHD Closed cycle MHD Advantages of MHD Applications Conclusion References
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INTRODUCTION
The electricity requirements of the world including India are increasing at alarming rate and the power demand has been running ahead of supply.
Generation of electrical power by coal based steam power plants or nuclear power plants causes’ pollution, strongly suggests the harnessing of non conventional, renewable and environment friendly energy resources
This paper describes the magneto hydro dynamic power generation which is a new unique method of power generation which is said to be high efficiency and low pollution.
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PRINCIPLE OF WORKING OF AN MHD GENERATOR
The principal of MHD generation is simple, discovered
faraday when an electric conductor moves across a magnetic
field, an e.m.f is induced in it, which produced an electric
current.
This is the principle of conventional generator also, where the
conductors consist of copper strip.
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TYPES OF MHD GENERATORS
The MHD generators are classified into two groups as Open cycle MHD Closed cycle MHD
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OPEN CYCLE MHD
In this system the gaseous fuel produced from coal
gasification plant is supplied to the combustion chamber
where it is burnt in the presence of high pressure air (5ata).
The heat of the hot gases coming out from MHD is used for
steam generation before it is exhausted into atmosphere
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BLOCK DIAGRAM OF OPEN CYCLE MHD
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CLOSED CYCLE MHD
The working of the system is exactly similar to Open cycle MHD except the working fluid is continuously circulated in the cycle instead of exhausting to the atmosphere.
As there is no loss of working fluid this can be chosen for its better heat transfer and electrical properties.
The closed cycle MHD retains the seeding element, gives pollution free operation and saves exhaust heat.
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BLOCK DIAGRAM OF CLOSED CYCLE MHD
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ADVANTAGES OF MHD GENERATOR
No moving part, so more reliable.
As there is no limitation to the size of the duct, so high capacity generators are possible.
Ability of reaching the full power level instantly.
Conceptually these generators are very simpler.
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APPLICATIONS
Power generation in space craft. Defense application. Hypersonic wind tunnel experiments
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CONCLUSION
With the increased industrial and agricultural activities, power demand is also highly increased. In the country is sure to fall short of the energy demand by the first decade of next century. The answer to this is in non conventional energy.
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REFERENCES
• Power systems by J.B.Guptha.
• Non-conventional energy source by G.D.RAI.
• Genration,distribution& utilization of electrical energy by C.L.Wadwa.
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THANK YOU
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