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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2282/1183
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| Title: | Modeling and optimization of coolant channel cross sections in induction heating coils |
| Authors: | Svendsen, Kjetil
Hagen, Svein Thore |
| Issue Date: | 2011 |
| Abstract: | In induction heating applications where high currents and intermittent power
application dominate, thermal fatigue can be a limiting factor of the service life of the
induction coil. The outer geometry of the coil is often set by the application, hence the
temperature in the cross section has to be affected by the inner shape of the coil, coolant
velocity, and thermal properties of the coolant. In this paper a model for estimating the
temperature of the cross section is presented. The model is also applied to an optimization
problem where a high power loss, copper region is surrounding a wedge shaped cooling
channel. The point of the wedge was replaced by a radius that was optimized. The optimum
was considered where the thermal fatigue service life is maximized, i.e. where the peak
deviation from mean temperature in the cross section was at a minimum. The results show
that the optimum corner radius is very small, typically 0.3-0.5 mm. |
| Keywords: | Coils
Fatigue
Modeling |
| Publisher: | Emerald |
| Document type: | Journal article |
| URI: | http://hdl.handle.net/2282/1183 |
| DOI: | http://dx.doi.org/10.1108/03321641111152702 |
| Appears in Collections: | Institutt for elektro, IT og kybernetikk
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