... process. Through case studies on a one-dimensional (1D) heat simulation and a pool boiling experiment using multisensor thermocouple data for heat flux reconstruction, we demonstrate the model's superiority over traditional methods. The inclusion of the spatiotemporal interaction term significantly...

...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...

... size = 11.5 mm) and microporous-coated surface ( d m = 66 μ m) shows the maximum enhancement of 39.93% in comparison to the smooth surface. Fig. 6 Pool boiling heat transfer coefficient of the coated surface (mean particle diameter 66, 24, and 11  μ m) Figure 11 shows the boiling...

..., 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...

... , E. , and Komotori , K. , 1978 , “ Pool Boiling Heat Transfer to Emulsions ,” ASME J. Heat Transfer , 100 ( 4 ), pp. 613 – 617 . 10.1115/1.3450865 [4] Bulanov , N. V. , Gasanov , B. M. , and Turchaninova , E. A. , 2006 , “ Results of Experimental Investigation of Heat...

.... Editor: W. Q. Tao. 14 11 2013 22 10 2014 25 11 2014 In the present work, the characteristic atmospheric saturated heat flux controlled pool boiling curves for zirconia–water and silver–water nanofluids have been reproduced by the coupled map lattice (CML) method using a two...

... E. Phelan. 06 04 2013 31 07 2013 Experimental work was undertaken to investigate the process by which pool-boiling critical heat flux (CHF) occurs using an IR camera to measure the local temperature and heat transfer coefficients on a heated silicon surface. The wetted area...

... site density. Experiments such as those of Sato et al. [ 14 ] studied the effect of spacing between cylindrical cavities on pool boiling heat transfer. They used cylindrical cavities 10  μ m in diameter and 40  μ m deep arranged along a straight line with center-to-center cavity spacing varying from 1...

... has the ability to dissipate a high heat flux while maintaining a small temperature difference. A vapor chamber with pool boiling offers an effective way to provide cooling and to maintain temperature uniformity. The objective of the current work is to investigate pool boiling performance of ethanol...

...Jiajun Xu; Bao Yang; Boualem Hammouda It is clear that the moderate change in thermal conductivity and viscosity in the water-PAO nanoemulsion fluids would not be responsible for the striking difference in pool boiling between the nanoemulsion fluids and the pure PAO. It is observed that water...

... theirs independently of pool boiling. Then, Kwark et al. [ 18 , 19 ] tested the pool boiling performance of this optimal nanoporous heater. Kwark et al. [ 18 ] tested at different system pressures and heated surface orientations. They found that the nanoporous coating dramatically enhanced the CHF...

... enhanced computational capacity. Film boiling simulations have been performed primarily for horizontal surfaces. Modeling of transition from nucleate to film boiling and film to nucleate boiling needs further work before one can numerically predict the complete pool boiling curve, at least...

... 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 Engineered...

...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...