POOL BOILING OF HIGH-FREQUENCY CONDUCTORS

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Description

This study presents development of a unique, powerful method for cooling high-frequency, AC conductors that can benefit end users of transformer windings, electrical machine windings, and magnet coils. This method of heat removal involves boiling a dielectric, fluorinert refrigerant that is in direct contact with litz wire conductors. A pool boiling test vessel is constructed, which provides for temperature control of the pool of fluorinert liquid. The test vessel is fitted with viewing ports so that the experiments are observed and studied with the aid of high-speed photography. Tests are performed on a variety of litz wire conductors. The boiling ... continued below

Physical Description

8 p.

Creation Information

Wright, S. E. (Spencer E.); Konecni, S. (Snezana); Ammerman, C. N. (Curtt N.) & Sims, J. R. (James R.) January 1, 2001.

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Description

This study presents development of a unique, powerful method for cooling high-frequency, AC conductors that can benefit end users of transformer windings, electrical machine windings, and magnet coils. This method of heat removal involves boiling a dielectric, fluorinert refrigerant that is in direct contact with litz wire conductors. A pool boiling test vessel is constructed, which provides for temperature control of the pool of fluorinert liquid. The test vessel is fitted with viewing ports so that the experiments are observed and studied with the aid of high-speed photography. Tests are performed on a variety of litz wire conductors. The boiling heat transfer coefficient is dependent on the conductor surface roughness. The size of the features on the conductor surface depends on the single-strand wire gage from which the conductor is constructed. All tests are performed with the conductors mounted horizontally. These tests are performed using a DC power supply. The results of these experiments will aid in the design of future cooling systems.

Physical Description

8 p.

Source

  • "Submitted to: 2001 ASME International Mechanical Engineering Congress and Exposition, November 10-16, New Yourk, NY."

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Identifier

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  • Report No.: LA-UR-01-2041
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975292
  • Archival Resource Key: ark:/67531/metadc931358

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Creation Date

  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 12, 2016, 6:53 p.m.

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Citations, Rights, Re-Use

Wright, S. E. (Spencer E.); Konecni, S. (Snezana); Ammerman, C. N. (Curtt N.) & Sims, J. R. (James R.). POOL BOILING OF HIGH-FREQUENCY CONDUCTORS, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc931358/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.