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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