...Anil S. Katarkar; Ajay D. Pingale; Sachin U. Belgamwar; Swapan Bhaumik The fabrication of porous metallic composite coating on the heating surface to improve pool boiling heat transfer (BHT) performance has received significant attention in recent years. In this work, Cu–GNPs nanocomposite coatings...

... as other combinations. It is manifested that the application of coated surface along with the gridded metal surface having protrusions significantly enhances the heat transfer coefficient. Fig. 9 Pool boiling curves for the attachment of GMS and GMSP onto the microporous-coated surface e...

..., experimental results of heat transfer coefficients (HTCs) during pool boiling of de-ionized water (DI water), Al 2 O 3 -DI water- and Fe 2 O 3 -DI water-based nanofluids are presented in this paper. Based on these results, the effect of surface roughness and nanofluid concentration on the surface wettability...

... surface. This kind of wetting hybrid modification is always carried out on a plain or flat surface. In this paper, polytetrafluoroethylene (PTFE) powders were coated on a superhydrophilic microcopper dendrite fin surface to build a wetting hybrid surface. The pool-boiling experimental results showed...

... wettability in pool boiling heat transfer is studied in order to understand if there could be a path to increment heat pipe thermal performance. This work analyzes the effects of surface wettability on boiling (tested fluid is pure water) and proposes a new super-hydrophobic polymeric coating (De Coninck et...

... epoxy and the other by soldering. Effects on pool boiling performance were investigated, of different metal particle sizes of the epoxy-based coating, on R-123 refrigerants, and on water. All boiling tests were performed with 1 cm × 1 cm test heaters in the horizontal, upward-facing orientation...

... , “ An Experimental Study of Boiling in Dilute Emulsions, Part B: Visualization ,” Int. J. Heat Mass Transfer , 55 ( 7–8 ), pp. 2166 – 2172 . 10.1016/j.ijheatmasstransfer.2011.12.021 [3] Mori , Y. H. , Inui , E. , and Komotori , K. , 1978 , “ Pool Boiling Heat Transfer to Emulsions ,” ASME J...

... of Fluids With Nanoparticles ,” Developments and Applications of Non-Newtonian Flows , FED-Vol. 231/MD-Vol. 66, D. A. Siginer , and H. P. Wang , eds., ASME , New York , pp. 99 – 105 . [2] Das , S. K. , Putra , N. , and Roetzel , W. , 2003 , “ Pool Boiling Characteristics...

...J. Jung; S. J. Kim; J. Kim pool boiling critical heat flux IR thermometry The high heat flux capability of phase change heat transfer results from heat removal by latent heat and increased single-phase heat transfer by local agitation of the fluid as bubbles depart the surface. CHF...

.... , 1992 , Liquid-Vapor Phase Change Phenomena , Taylor & Francis , London . [2] Qi , Y. , and Klausner , J. F. , 2006 , “ Comparison of Nucleation Site Density for Pool Boiling and Gas Nucleation ,” ASME J. Heat Transfer , 128 ( 1 ), pp. 13 – 20 . 10.1115/1.2130399 [3] Bon...

... 30, 2012; final manuscript received November 17, 2012; published online September 23, 2013. Assoc. Editor: Sujoy Kumar Saha. Water with its known properties, availability, and nontoxic nature has been widely used by researchers for augmenting pool boiling heat transfer. McGillis and Carey [ 1...

..., 2013. Guest Editors: G. P. “Bud” Peterson and Zhuomin Zhang. 31 05 2012 15 03 2013 With regard to potential application in pressurized water reactors (PWRs), a nanoporous heated surface was tested in pool boiling of an aqueous solution of boric acid (H 3 BO 3 ), or borated water (1...

... Editors: G. P. “Bud” Peterson and Zhuomin Zhang. 29 06 2012 17 01 2013 In this work, thermophysical properties, microstructure, and pool boiling characteristics of water-in-polyalphaolefin (PAO) nanoemulsion fluids have been measured in the water concentration range of 0–10.3 vol...

.... , and Dhir , V. K. , 2002 , “ Effect of Contact Angle on the Dynamics of a Single Bubble During Pool Boiling Using Numerical Simulations ,” Proceedings of IMECE2002 ASME International Mechanical Engineering Congress & Exposition , New Orleans , LA, Paper IMECE2002-33876, pp. 467 – 475 . [31...

... was interpreted to be caused primarily by the improved wettability of the quenched surfaces, due to deposition of the fish-scale-shaped GONs resulting in self-assembly quasi-ordered microscale morphologies. graphene oxide nanosheets colloidal suspensions pool boiling quenching critical heat flux...

...Rishi Raj; Jungho Kim; John McQuillen The relatively poor understanding of gravity effects on pool boiling heat transfer can be attributed to the lack of long duration high-quality microgravity data, g-jitter associated with ground-based low gravity facilities, little data at intermediate gravity...

...Ho Seon Ahn; Joonwon Kim; Moo Hwan Kim Dynamic wetting behaviors of water droplet on the modified surface were investigated experimentally. Dynamic contact angles were measured as a characterization method to explain the extraordinary pool boiling critical heat flux (CHF) enhancement...

...Tailian Chen Pool boiling heat transfer has been extensively studied over decades, but the effect of boundary heating conditions on boiling received little attention. In this work, heat transfer coefficients during pool boiling of five different refrigerants (R123, R245fa, R236fa, R134a, and R22...

...Rishi Raj; Jungho Kim; John McQuillen A framework for scaling pool boiling heat flux is developed using data from various heater sizes over a range of gravity levels. Boiling is buoyancy dominated for large heaters and/or high gravity conditions and the heat flux is heater size independent...

.... Many studies have been done on the pool boiling characteristics of nanofluids, most of which have been with nanofluids containing oxide nanoparticles owing to the ease in their preparation. Deterioration in boiling heat transfer was observed in some studies. Metallic nanofluids having metal...