.svg){kind=logo}
A COMPREHENSIVE ANALYSIS OF RADIAL THERMAL CONDUCTIVITY OF GRAIN-ORIENTED ELECTRICAL STEEL BASED ON THE INTERACTIVE APPROACH
Keywords:
electrical steel, grain-oriented, radial thermal conductivityDOI:
https://doi.org/10.17654/0973576324028Abstract
The grain-oriented (GO) electrical steel coil has highly anisotropic conduction properties. These properties arise because, in one direction, thermal conductivity is that of the bulk conduction properties of electrical steel. In another direction, the conductivity is a fraction of bulk properties due to the thousands of laminations comprising a coil. There are two principal directions in which heat can be transferred in a coil, axially and radially. The temperature profile of a coil is determined by the proportion of total heat transferred in each direction. An electrical steel coil usually consists of thousands of laps, and each lap is a composite of steel and MgO coating on both surfaces. The heat entering the coil normal to the strip plane, i.e., radially, passes through coating, steel and the gas occupying the inter-lap gaps, and therefore, a high thermal resistance is associated with radial heat transfer. The conductivity of such a composite will be dependent upon the number of laminations and the thickness of individual layers. A series of experiments were conducted to measure the coil conduction in the radial direction to provide data for future research.
Received: March 26, 2024
Accepted: April 22, 2024
References
O. M. H. Fatla, Agustin Valera-Medina, Fiona Robinson, Mark Cichuta and Nathan Beynon, Development of convection in high temperature annealing furnaces using rotating cylinder technique, Applied Thermal Engineering 129 (2017), 1392-1402.
P. Beckley, Electrical steels for rotating machines, Institution of Electrical Engineers, London, 2002.
K. Takashina, Y. Suga, M. Fukumoto, T. Yamamoto, O. Tanaka and K. Kuroki, Method of producing grain oriented electromagnetic steel sheet, Google Patents, 1976.
K. Price, B. Goode and D. Power, Grain-oriented electrical steels for power and distribution transformers, Ironmaking and Steelmaking 43 (2016), 636-641.
X. Zhaosuo, K. Yonglin and W. Quanli, Developments in the production of grain-oriented electrical steel, Journal of Magnetism and Magnetic Materials 320 (2008), 3229-3233.
A. Buckly, A. J. Moses and L. Trollope, Study and redesign of high temperature batch annealing furnace for production of grain oriented electrical steel, Ironmaking and Steelmaking 26(6) (1999), 477-482.
N. P. Goss, Electrical sheet and method and apparatus for its manufacturing and test, U.S. Patent 1,965,559, 1934.
Minh-Trung Duong, Yon-Do Chun, Byuoung-Gun Park, Dong-Jun Kim, Jae-Hak Choi and Pil-Wan Han, Thermal analysis of a high speed induction motor considering harmonic loss distribution, J. Electric. Eng. Technol. 12 (2017), 1503-1510.
D. Zhao, X. Qian, X. Gu, S. A. Jajja and R. Yang, Measurement techniques for thermal conductivity and interfacial thermal conductance of bulk and thin film materials, Journal of Electronic Packaging 138 (2016), 040802.
J. E. Parrott and A. D. Stuckes, Thermal Conductivity of Solids, Pion Limited, 1975.
C. Y. Ho and T. Chu, Electrical resistivity and thermal conductivity of nine selected AISI stainless steels, Thermophysical and Electronic Properties Information Analysis Center, Washington, 1977.
Downloads
Published
Issue
Section
License
Copyright (c) 2024 PUSHPA PUBLISHING HOUSE, PRAYAGRAJ, INDIA
This work is licensed under a Creative Commons Attribution 4.0 International License.
____________________________
Attribution: Credit Pusha Publishing House as the original publisher, including title and author(s) if applicable.
Non-Commercial Use: For non-commercial purposes only. No commercial activities without explicit permission.
No Derivatives: Modifying or creating derivative works not allowed without written permission.
Contact Pusha Publishing House for more info or permissions.
