Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-28T17:16:14.362Z Has data issue: false hasContentIssue false
  • English
  • Français

Microwave Firing At 915 MHz - Efficiency and Implications

Published online by Cambridge University Press:  10 February 2011

N. G. Evans  and
M. G. Hamlyn
N. G. Evans
Affiliation:
School of Engineering, Staffordshire University, Stafford, UK, ST18 0AD
M. G. Hamlyn
Affiliation:
School of Engineering, Staffordshire University, Stafford, UK, ST18 0AD
Get access

Abstract

The conversion efficiency of electrical to microwave power by magnetrons operating at 896 / 915 MHz is significantly greater than that of magnetrons operating at 2.45 GHz. The increased efficiency at this frequency improves the prospects of microwave firing being adopted as a commercially viable process but the change in frequency alters the microwave-material interactions that take place.

This paper discusses the influence and implications of using 896 / 915 MHz for firing ceramics and compares dielectric property data at both frequencies. The results suggest that using the lower frequency will result in more efficient heating.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 430: Symposium O – Microwave Processing of Materials V , 1996 , 9
Copyright
Copyright © Materials Research Society 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Bratt, M.J., Process Technology for Firing Ceramic Products with Microwave Energy, PhD thesis, April 1995, Staffordshire University.Google Scholar
2. Dielectric Heating for Industrial Processes, p24. Dielectric Heating Working Group, Hulls, Chairman P., Secretary De HoeJ-M. Published by U.I.E. 1992 Google Scholar
3. Metaxas, A.C., Meredith, R., Industrial Microwave Heating. IEE Power Engineering Series 4. Peter Peregrinus Ltd 1988.Google Scholar
4. Hutcheon, R., de Jong, M., Adams, F.., J. icrowave Power and Electromagnetic Energy vol 27(2) pp 93–102, 1992.Google Scholar
5. Evans, N.G., The Dielectric Properties of Ceramics at 2.45 GHz and their Influence on Microwave Firing, PhD thesis, April 1995, Staffordshire University.Google Scholar
6. Arai, M., Binner, J.G.P., Bowden, A.L., Cross, T.E., Evans, N.G., Hamlyn, M.G., Hutcheon, R., Morin, G., Smith, B., Ceramic Transactions Volume 36. Proc of the Symp ‘Microwaves: Theory and Application in Materials Processing II' 1993 pp539–546 Google Scholar