Fly Wheels and Super Fly Wheels: Energy Storage Systems

ENERGY STORAGE SYSTEMS – Vol. I – Flywheels and Super-Fly Wheels - B. Kaftanoğlu

FLYWHEELS AND SUPER-FLYWHEELS
B. Kaftanoğlu
Middle East Technical University, Ankara, TURKEY
Keywords: Flywheel, super-flywheel, energy storage, composites.
Contents

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1. Introduction
2. Applications
3. Flywheel design
4. Historical perspective of flywheel design
5. Stress Analysis and Specific Energy Calculations of Flywheels
5.1. Stress Analysis of Isotropic Multi-hyperbolic Flywheels
5.2. Interference Fit for Multi-hyperbolic Flywheels
5.3. Specific Energy for Multi-hyperbolic Flywheels
5.4. Stress Analysis of Composite Multi-rim Flyweels
5.5. Elastic Constants and Allowable Stresses for Multi-rim Flywheels
5.6. Specific Energy for Multi-rim Flywheels
6. Sample solutions for Design Optimization of Flywheels
7. Discussions of Design Optimization
7. 1. Multi-hyperbolic Flywheels
7.2. Multi-rim Flywheels
8. Concluding remarks
Acknowledgements
Appendix
Glossary
Bibliography
Biographical Sketch
Summary

This chapter introduces the use of the flywheels for mechanical energy storage. The need for flywheels is discussed and the amounts of energy stored by different techniques are compared with that stored by flywheels. Some historical information is given and previous work is briefly surveyed. Then design of clasical flywheels is introduced. The design of super flywheels made out of composite materials are discussed and theory for multi-hyperbolic and multi-rim flywheels are presented..
1. Introduction
Strorage of energy is necessary in many applications because of the following needs:
Energy may be available when it is not needed, and conversely energy may be needed when it is not available.

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ENERGY STORAGE SYSTEMS – Vol. I – Flywheels and Super-Fly Wheels - B. Kaftanoğlu

Quality of the available energy may not meet the characteristics of

Bibliography: [1] Cheng, C.G. and Hirschfeld, F. (1978): For the Latest in Energy Stroge, Try the Flywheel, Mech. [2] Penner, S.S. and Icerman, L.(1975): Energy. Volume II, Non-nuclear Energy Technologies. AddisonWesley Publishing Company. [A book on various aspects of energy technologies including energy storage] [3] Time, 56 May 6, 1974[A magazine news on application of flywheels to trolleybus.] [4]U.S the University of California, (1975): Flywheel Tech. Symp. Proc., 5.Pages 76-88 [A paper on application of flywheels to cars.] [5] Commission of the European Communities,(1974).Pages 361-374 of 8th Proc. Symp. Fusion Tech. [A research paper on details of of the design and construction of a very high capacy flywheel.] [6] Seireg, A. and Surana, K.S.(1970): Optimum Design of Rotating Disk. J.Engr. for Industry, Transactions of the ASME, Vol.92, pp.1-10 optimization.] [7] Soylu, R.(1981): Specific Energy Optimization in Flywheels [9] Surana, K.S. and Seireg, A.(1971): Design of Rotating Disks with Integral Shafts. J. Engr. For Industry, Transactions of the ASME, Vol.93, pp.805-813, 1971 [10] Kaftanoğlu, B., Soylu, R., Oral, S.,(1989): “Mechanical Energy Storage Using Flywheels and Design Optimization”, Energy Storage Systems, B University (METU) Ankara with high honors (1960) and received D.I.C., Ph.D. degrees of Imperial College, University of London (1966) 69) he joined ME Dept. of METU. He had important duties as Chairman of ME Dept. (1973 – 77), Founder Director of the Centre for Computer Aided Design, Manufacturing and Robotics (1984 – 1992), Director of the Graduate School for Natural and Applied Sciences (1984 – 87) and Vice-President (1987 – 1992) at METU where he is still active