Through the application of thin film evaporation theory and the fundamental operating principles of heat pipes, a hybrid axial groove has been developed that can greatly enhance the performance characteristics of conventional heat pipes. This hybrid axial groove is composed of a V-shaped channel connected with a circular channel through a very narrow longitudinal slot. During the operation, the V-shaped channel can provide high capillary pressure to drive the fluid flow and still maintain a large evaporative heat transfer coefficient. The large circular channel serves as the main path for the condensate return from the condenser to the evaporator and results in a very low flow resistance. The combination of a high evaporative heat transfer coefficient and a low flow resistance results in considerable enhancement in the heat transport capability of conventional heat pipes. In the present work, a detailed mathematical model for the evaporative heat transfer of a single groove has been established based on the conservation principles for mass, momentum and energy, and the modeling results quantitatively verify that this particular configuration has an enhanced evaporative heat transfer performance compared with that of conventional rectangular groove, due to the considerable reduction in the liquid film thickness and a corresponding increase in the evaporative heat transfer area in both the evaporating liquid film region and the meniscus region.
Skip Nav Destination
Beihang University,
Georgia Institute of Technology,
Article navigation
Research-Article
Evaporative Heat Transfer Analysis of a Heat Pipe With Hybrid Axial Groove
Lizhan Bai,
Lizhan Bai
1
e-mail: bailizhan@sina.com
1Corresponding author.
Search for other works by this author on:
Guiping Lin,
Beihang University,
Guiping Lin
School of Aeronautical Science and Engineering
,Beihang University,
Beijing, 100191
, P.R. China
Search for other works by this author on:
G. P. Peterson
Georgia Institute of Technology,
G. P. Peterson
Woodruff School of Mechanical Engineering
,Georgia Institute of Technology,
Atlanta, GA 30318
Search for other works by this author on:
Lizhan Bai
e-mail: bailizhan@sina.com
Guiping Lin
School of Aeronautical Science and Engineering
,Beihang University,
Beijing, 100191
, P.R. China
G. P. Peterson
Woodruff School of Mechanical Engineering
,Georgia Institute of Technology,
Atlanta, GA 30318
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the Journal of Heat Transfer. Manuscript received June 6, 2012; final manuscript received October 29, 2012; published online February 11, 2013. Assoc. Editor: Bruce L. Drolen.
J. Heat Transfer. Mar 2013, 135(3): 031503 (9 pages)
Published Online: February 11, 2013
Article history
Received:
June 6, 2012
Revision Received:
October 29, 2012
Citation
Bai, L., Lin, G., and Peterson, G. P. (February 11, 2013). "Evaporative Heat Transfer Analysis of a Heat Pipe With Hybrid Axial Groove." ASME. J. Heat Transfer. March 2013; 135(3): 031503. https://doi.org/10.1115/1.4022996
Download citation file:
Get Email Alerts
Cited By
Local Heat Transfer Distribution on Thin Metal Foil Impinged by Array of Free Surface Jets
J. Heat Mass Transfer (July 2024)
Instability of Jeffrey Fluid Throughflow in a Porous Layer Induced by Heat Source and Soret Effect
J. Heat Mass Transfer (July 2024)
Related Articles
Heat Transfer Coefficient, Pressure Gradient, and Flow Patterns of R1234yf Evaporating in Microchannel Tube
J. Heat Transfer (April,2021)
Analytical and Experimental Analysis of a High Temperature Mercury Thermosyphon
J. Heat Transfer (September,2009)
Enhanced Heat Transfer in Biporous Wicks in the Thin Liquid Film Evaporation and Boiling Regimes
J. Heat Transfer (October,2012)
Effects of Film Evaporation and Condensation on Oscillatory Flow and Heat Transfer in an Oscillating Heat Pipe
J. Heat Transfer (April,2011)
Related Proceedings Papers
Related Chapters
The Special Characteristics of Closed-Cycle Gas Turbines
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Extended-Surface Metallurgy
Heat Exchanger Engineering Techniques
Adding Surface While Minimizing Downtime
Heat Exchanger Engineering Techniques