Variation in channel diameter is investigated as a means of enhancing heat transfer in a pulsating heat pipe with capillary wick using the model presented here. The model is one-dimensional with slug flow where the momentum equation is solved for each liquid slug. The number and mass of liquid slugs are allowed to vary throughout a simulation. The energy equation is solved both in the wall and wick and in the working fluid. The effects of diameter profile, gravity, fill ratio, and heating and cooling schemes can be studied with the model. Results yield similar trends to what has been experimentally observed. Results also indicate that heat transfer can be enhanced when the diameter of the channel is varied along the channel length, thereby providing increased range of heat load capability, less sensitivity to gravity, and in some cases smaller temperature differentials.
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ASME 2004 International Mechanical Engineering Congress and Exposition
November 13–19, 2004
Anaheim, California, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-4711-X
PROCEEDINGS PAPER
Model for Pulsating Heat Pipe With Capillary Wick and Varying Channel Diameter
Brian M. Holley,
Brian M. Holley
University of Connecticut
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Amir Faghri
Amir Faghri
University of Connecticut
Search for other works by this author on:
Brian M. Holley
University of Connecticut
Amir Faghri
University of Connecticut
Paper No:
IMECE2004-59966, pp. 533-553; 21 pages
Published Online:
March 24, 2008
Citation
Holley, BM, & Faghri, A. "Model for Pulsating Heat Pipe With Capillary Wick and Varying Channel Diameter." Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Heat Transfer, Volume 2. Anaheim, California, USA. November 13–19, 2004. pp. 533-553. ASME. https://doi.org/10.1115/IMECE2004-59966
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