The results of a recently completed experimental and analytical study showed that the capillary limit of a helically-grooved heat pipe (HGHP) was increased significantly when the transverse body force field was increased. This was due to the geometry of the helical groove wick structure. The objective of the present research was to experimentally determine the performance of revolving helically-grooved heat pipes when the working fluid inventory was varied. This report describes the measurement of the geometry of the heat pipe wick structure and the construction and testing of a heat pipe filling station. In addition, an extensive analysis of the uncertainty involved in the filling procedure and working fluid inventory has been outlined. Experimental measurements include the maximum heat transport, thermal resistance and evaporative heat transfer coefficient of the revolving helically grooved heat pipe for radial accelerations of 2.0, 4.0, 6.0, 8.0, and 10.0-g and working fluid fills of 1.0, and 1.5. An existing capillary limit model was updated and comparisons were made to the present experimental data.
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The Effect of Working Fluid Inventory on the Performance of Revolving Helically Grooved Heat Pipes
R. Michael Castle, Graduate Research Assistant,
R. Michael Castle, Graduate Research Assistant
Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435
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Scott K. Thomas, Associate Professor Assoc. Mem. ASME,
Scott K. Thomas, Associate Professor Assoc. Mem. ASME
Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435
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Kirk L. Yerkes, Research Engineer
Kirk L. Yerkes, Research Engineer
Air Force Research Laboratory (PRPG) Wright-Patterson AFB, OH 45433-7251
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R. Michael Castle, Graduate Research Assistant
Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435
Scott K. Thomas, Associate Professor Assoc. Mem. ASME
Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH 45435
Kirk L. Yerkes, Research Engineer
Air Force Research Laboratory (PRPG) Wright-Patterson AFB, OH 45433-7251
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division April 21, 2000; revision received September 27, 2000. Associate Editor: G. P. Peterson.
J. Heat Transfer. Feb 2001, 123(1): 120-129 (10 pages)
Published Online: September 27, 2000
Article history
Received:
April 21, 2000
Revised:
September 27, 2000
Citation
Castle, R. M., Thomas, S. K., and Yerkes, K. L. (September 27, 2000). "The Effect of Working Fluid Inventory on the Performance of Revolving Helically Grooved Heat Pipes ." ASME. J. Heat Transfer. February 2001; 123(1): 120–129. https://doi.org/10.1115/1.1339982
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