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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

HEAT TRANSFER FROM THE STATOR END-WINDINGS OF A LOW-VOLTAGE LAP-WOUND ELECTRIC MOTOR

Get access (open in a dialog) DOI: 10.1615/IHTC10.2570
pages 197-202

Résumé

Measurements of heat transfer from the end-windings of a 4-pole induction motor are reported and interpreted in terms of the underlying cooling air behaviour. Various motor speeds and wafter lengths were used. The air flow was also modified by inserting an air guide near the end-windings.
The heat transfer coefficient at the air inlet end was found to exceed substantially that at the fan end. The important contribution of the wafters to this and to other aspects of the flow and cooling processes is highlighted and discussed.
The grazing velocity of the air over the surface of the end-winding did not provide a satisfactory correlating parameter for the heat transfer coefficients.