Method of improving heat transfer in stator coil cooling tubes

Details Method of improving heat transfer in stator coil cooling tubes Method of improving heat transfer in stator coil cooling tubes

1994-03-28

1995-04-18

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 53, H02K 900, H02K 120

Patent

active

054081521

ABSTRACT:
A method of cooling an electrodynamic machine having an inner-cooled stator winding consisting of a stator coil surrounding a cooling tube, including the steps of locating a hot-spot along a length of the stator coil through which the cooling tube runs, deforming the cooling tube at a tube location generally adjacent the hot-spot so as to increase the flow resistance of the cooling tube, and flowing a cooling medium through the cooling tube during operation of the electrodynamic machine to effect a heat transfer between the stator coil and the cooling medium.

REFERENCES:
patent: 4705103 (1987-11-01), Zogg et al.
patent: 4799543 (1989-01-01), Iversen et al.
patent: 4837469 (1989-06-01), Ward
patent: 4921042 (1990-05-01), Zohler
patent: 5066882 (1991-11-01), Sargeant

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