The Study of a Rotating-Heat-Pipe-Cooled Electric Motor.

Abstract

The steady state temperatures of a conventional, 15 HP electric motor were compared to those of a rotating-heat-pipe-cooled motor under identical loading conditions. Fourteen thermocouples were used to measure temperatures at various locations within the motor. Seven of these were placed in rotating parts of the motor and were recorded through a mercury slip ring unit. Tests were made with the electric motor in its original configuration (i.e. with a solid shaft), with its solid shaft replaced by a rotating heat pipe, and with this heat pipe unit containing segmented external fins to increase air cooling. The modifications did not show a decrease of motor temperatures. This was probably due to a lack of cooling air through the motor casing. Recommendations for future work are included. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1980
Accession Number
ADA098083

Entities

People

  • Gerhard Otto Immel

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Electric Motors
  • Engineering
  • Flow
  • Heat Pipes
  • Heat Transfer
  • Heat Transfer Coefficients
  • High Temperature
  • Pipes
  • Reynolds Number
  • Rings
  • Segmented
  • Slip Rings
  • Steady State
  • Test Facilities
  • Thermal Conductivity
  • Thermocouples

Readers

  • Aerodynamics.
  • Neuroscience
  • Thermal Physics or Thermal Science.