Magneto hydro dynamic (mhd) power generation

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1. MAGNETO HYDRO DYNAMIC (MHD) POWER GENERATION Submitted by : Sreejith K S5IE Roll no. 44 Reg no. 17080625

2. CONTENT INTRODUCTION HISTORY OH MHD PRINCIPLE COMPARISON OF TURBO GENERATOR AND MHD GENERATOR BLOCK DIAGRAM OF MHD GENERATOR LORENTZ FORCE

3. METHODS OF MHD POWER GENERATION OPEN CYCLE MHD SYSTEM CLOSED CYCLE MHD SYSTEM DIFFERENCE BETWEEN OPEN AND CLOSED CYCLES ADVANTAGES DISADVANTAGES APPLICATIONS CONCLUSION

4. INTRODUCTION MHD power generation is which converts the Heat Energy directly into Electrical Energy. The Word MHD derived from Magneto-Magnetic Field,Hydro -Liquid and Dynamics-Movement. The field of MHD was Proposed by Hannes Alfven.

5. HISTORY OF MHD It was introduced by Michael Faraday in 1832 first MHD-Generator was built in 1959 in USA The first MHD power Plant was constructed in USSR in 1970

6. Fig.1 MHD Generator

7. PRINCIPLE Faraday’s Law of Electromagnetic Induction Fig.2 Principle of MHD

8. COMPARISON OF TURBO GENERATOR AND MHD GENERATOR Fig.3 Comparison of MHD & Turbo generators

9. BLOCK DIAGRAM OF MHD GENERATOR Fig.4 Block diagram of MHD generator

10. LORENTZ FORCE Lorentz Force on the charged particle (vector), F = q(v × B) where, v = velocity of the particle (vector) q= charge of the particle (scalar) B = magnetic field (vector)

11. Fig.5 Lorentz Force representation

12. METHODS OF MHD POWER GENERATION Open Cycle MHD System Closed Cycle MHD System 1.Seeded Inert Gas System 2.Liquid Metal System

13. OPEN CYCLE MHD SYSTEM Fig.6 Open cycle MHD system

14. CLOSED CYCLE MHD SYSTEM Fig.7 Closed cycle MHD system

15. DIFFERENCE BETWEEN OPEN AND CLOSED CYCLES OPEN CYCLE SYSTEM CLOSED CYCLE SYSTEM Working fluid is discharged to the atmosphere through a stack. Working fluid is recycled again Operation of MHD generator is done directly on combustion products Helium or Argon is used as the working fluid.

16. Temperature required is about 2300˚C to 2700˚C Temperature required is about 530˚C More developed Less developed

17. ADVANTAGES No moving parts, so no mechanical losses. Overall Efficiency is about 50%. Large Amount of pollution free power is generated. Size of Plant is small Less overall Generation cost

18. DISADVANTAGES Very Large Magnets are needed, this is the major expense. High Friction and Heat Transfer losses. High operating temperature. DC to AC Converters increase the cost of plant.

19. APPLICATIONS Hypersonic Wind tunnel Experiments Defense application.

20. CONCLUSION MHD Power Generation converts Heat Energy directly into Electrical Energy

21. REFERENCE http://en.Wikipedia.org/wiki/Universal_Mobile http://iarcventure.com/Publication/ijarse_vol1lss2/contents/5-10.pdf

22. THANK YOU