... online June 2, 2015. Assoc. Editor: Jose L. Lage. 01 04 2014 22 02 2015 02 06 2015 Experiments are performed to analyze melting and solidification of a phase change material (PCM) enclosed in a vertical cylinder by a concentrically located heat pipe (HP) surrounded by either...

...Steve Q. Cai; Avijit Bhunia Heat pipes or vapor chambers are phase change heat transfer systems [ 8 ]. Over the past twenty years, they have been extensively applied in electronic cooling areas because of their highly effective phase change heat transfer, passive operation and low manufacturing...

... at Bi = 0.0005 heat spreading thermal spreading model thermal spreading resistance heat spreader heat sink heat pipe two-phase heat spreader Heat fluxes in many applications continue to increase as integrated, heat-dissipating components become more powerful and are reduced in size...

... September 23, 2013. Assoc. Editor: Sujoy Kumar Saha. 28 05 2012 09 03 2013 The paper presents the enhancement in the operational limits (boiling, entrainment, sonic, viscous and capillary limits) of heat pipes using silver nanoparticles dispersed in de-ionized (DI) water. The tested...

.... Editor: Bruce L. Drolen. 06 06 2012 29 10 2012 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...

... heat pipe vapor chamber Passive thermal management of high heat fluxes is typically accomplished with heat pipes or vapor chambers that employ capillary action of the working fluid through internal wick structures [ 1 , 2 ]. The next generation of high-power electronic devices with increased...

...Qingjun Cai; Ya-Chi Chen Dryout in a heat pipe evaporator is caused by insufficient condensate supply through the wick structure. Dryout is generally considered a failure of the heat pipe operation. However, traditional dryout theory may not fully explain the heat and mass transport limitations...

...Youngsuk Nam; Stephen Sharratt; Gilhwan Cha; Y. Sungtaek Ju Micro heat pipes incorporating advanced wicks are promising for the thermal management of power electronics. We report the heat transfer performance of superhydrophilic Cu micropost wicks fabricated on thin silicon substrates using...

...Vadim S. Nikolayev This article deals with the numerical modeling of the pulsating heat pipe (PHP) and is based on the film evaporation/condensation model recently applied to the single-bubble PHP ( Das et al., 2010, “Thermally Induced Two-Phase Oscillating Flow Inside a Capillary Tube,” Int. J...

...Wessel W. Wits; Jim B. W. Kok A novel, integrated approach in thermal management of electronic products, based on two-phase cooling, is presented. A flat miniature heat pipe, integrated inside the laminated structure of a printed circuit board (PCB), has been developed, based on mainstream PCB...

... show that streaming flow has the potential to be used as a cost-effective and reliable heat pipe and/or as a heat spreader technique when fluid thermal conductivity is low. 12 01 2009 20 08 2009 05 03 2010 05 03 2010 convection flow simulation flow visualisation fluid...

... Geld , C. W. M. , and Grooten , M. H. M. , 2007 , “ Air Heat Exchangers With Long Heat Pipes: Experiments and Predictions ,” Appl. Therm. Eng. 1359-4311 , 27 ( 14–15 ), pp. 2426 – 2434 . 10.1016/j.applthermaleng.2007.03.004 Dunn , P. D. , and Reay , D. A. , 1994 , Heat...

... evaporation heat pipes heat transfer mercury (metal) pipe flow temperature distribution thermal resistance thermosyphon high temperature liquid metal mercury heat pipe Thermosyphons are high thermal conductance devices able to transfer high amount of heat. In its most simple form...

... and evaporation heat transfer rates. 31 03 2008 16 09 2008 20 03 2009 condensation evaporation heat exchangers heat pipes natural convection refrigerants heat pipe thermosyphon heat exchanger R-134a The heat transfer in thermosyphons is based on a continuous...

...Chen-Ching Ting; Jing-Nang Lee; Chien-Chih Chen The article presents some significant experimental data for studying the heat transfer behavior of heat pipe, which will further help the cooling efficiency improvement of the heat pipe cooler. It is well known that the heat pipe owns the extreme...

.... 10 10 2007 03 06 2008 23 09 2008 chip scale packaging copper elemental semiconductors evaporation heat pipes microprocessor chips porosity silicon statistical analysis thermal management (packaging) thermal resistance heat pipe vapor chamber nonuniform heating...

...P. Cheng; H. B. Ma The minimum meniscus radius occurring in the heat pipe determines the maximum capillary heat transport. The accurate prediction of minimum meniscus radii plays a key role in designing a highly efficient heat pipe cooling device. In the current investigation, a mathematical model...

...A. Asias; M. Shusser; A. Leitner; A. Nabi; G. Grossman To investigate the feasibility of using heat pipes in airborne systems, heat pipe performance at large axial accelerations in the range of 3– 12 g was studied experimentally. The heat input chosen corresponded to the optimal heat pipe...