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TECHNICAL PAPERS: Radiative Transfer

The Effect of Working Fluid Inventory on the Performance of Revolving Helically Grooved Heat Pipes

[+] Author and Article Information
R. Michael Castle, Scott K. Thomas

Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435

Kirk L. Yerkes

Air Force Research Laboratory (PRPG) Wright-Patterson AFB, OH 45433-7251

J. Heat Transfer 123(1), 120-129 (Sep 27, 2000) (10 pages) doi:10.1115/1.1339982 History: Received April 21, 2000; Revised September 27, 2000
Copyright © 2001 by ASME
Topics: Fluids , Heat pipes
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References

Figures

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Helical groove geometry
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Schematic of the helical pitch measurement technique: (a) major components; (b) cross-sectional view of sprung pin engaging a helical groove
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Specific volume of ethanol versus temperature: (a) saturated liquid; (b) saturated vapor
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Schematic of the heat pipe filling station
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Thermocouple locations and relevant lengths
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Steady-state temperature distributions for |a⃗r|=0.01-g,G=1.0: (a) inboard; (b) outboard; (c) top; and (d) bottom
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Thermal resistance versus heat transport: (a) G=0.5; (b) G=1.0; and (c) G=1.5
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Capillary limit versus radial acceleration comparison of present model and Thomas et al. 2
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Comparison of present model and experimental capillary limit data versus radial acceleration: (a) G=0.5; (b) G=1.0; and (c) G=1.5
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Temperatures within the evaporator section versus transported heat for |a⃗r|=0.01-g: (a) x=54.0 mm; (b) x=92.1 mm; (c) x=130 mm; and (d) x=168 mm
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Temperatures within the evaporator section versus transported heat for |a⃗r|=10.0-g: (a) x=54.0 mm; (b) x=92.1 mm; (c) x=130 mm; and (d) x=168 mm
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Heat transfer coefficients within the evaporator section versus transported heat for |a⃗r|=0.01-g: (a) x=54.0 mm; (b) x=92.1 mm; (c) x=130 mm; and (d) x=168 mm
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Heat transfer coefficients within the evaporator section versus transported heat for |a⃗r|=10.0-g: (a) x=54.0 mm; (b) x=92.1 mm; (c) x=130 mm; and (d) x=168 mm
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Ratio of liquid volume to total groove volume versus saturation temperature

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