... of Vapor-Liquid Interface for the Identification of Boiling Regime and Critical Heat Flux ,” Int. J. Heat Mass Transfer , 131 , pp. 1138 – 1146 . 10.1016/j.ijheatmasstransfer.2018.11.136 [3] Mori , S. , Maruoka , N. , and Okuyama , K. , 2018 , “ Critical Heat Flux...

...Anatoly Parahovnik; Esther White; Yoav Peles Flow boiling heat transfer around the critical heat flux (CHF) condition at high reduced pressures of carbon dioxide in a 296-μm hydraulic diameter microchannel was experimentally studied. The CHF conditions for developing flow and fully developed flow...

.... , 2009 , “ A Study of Nucleate Boiling and Critical Heat Flux With EHD Enhancement ,” Heat Mass Transfer , 45 ( 7 ), pp. 999 – 1017 . 10.1007/s00231-007-0286-z [11] Saville , D. A. , 1997 , “ Electrohydrodynamics: The Taylor-Melcher Leaky Dielectric Model ,” Annu. Rev. Fluid Mech. , 29...

... in saturated conditions at atmospheric pressure and under increasing heat flux. The surface enhanced by the epoxy-based microporous coatings significantly augmented both nucleate boiling heat transfer coefficients and critical heat flux (CHF) of R-123 relative to those of a plain surface. However, for water...

... position or other orientations. The Institute for Space and Nuclear Power Studies at the University of New Mexico funded this research. Nomenclature C MPC , sat ( θ , δ MPC ) = CHF coefficient Eq. (3) CHF = critical heat flux (W/cm 2 ) Cu = copper...

...). Pool boiling experiments were conducted using horizontally oriented 1-cm 2 heated surfaces to quantify the effects of pressure and a microporous-enhanced coating on heat transfer coefficients and critical heat flux (CHF) values. Results showed that the coating enhanced heat transfer coefficients...

.... Tao. 20 05 2013 04 04 2014 A critical heat flux (CHF) correlation is developed for jet impingement boiling of a single round jet on a flat circular surface. The correlation is valid for submerged jets as well as for free surface jets with Reynolds numbers (Re) between 4000...

... 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...

... surface below 85 °C at 33 kPa. Flammability, toxicity, and temperature overshoot issues need to be addressed before practical implementation of ethanol-based cooling systems can occur. pool boiling heat transfer enhancement open microchannels critical heat flux subatmospheric pressure...

... at higher heat fluxes and lower critical heat flux (CHF) values as compared with HFC-134a. To enhance boiling heat transfer, a copper microporous coating was applied to the test surfaces. The coating enhanced both the boiling heat transfer coefficients and CHF for both refrigerants at all tested pressures...

.... Editor: Sushanta K. Mitra. 14 08 2012 13 03 2013 A variety of predictive correlations for critical heat flux (CHF) are examined in light of the growing body of work exploring enhanced flow boiling CHF via cross-sectional expansion. The analysis considers the effect of a small...

... and the critical heat flux (CHF) enhanced relative to pure water. Also, the possibility of transient pool boiling behavior of borated water was investigated but none was detected. With pressure and orientation variation, the nanoporous surface imposed on borated water showed a trend of further CHF enhancement...

...). Extremely dilute suspensions with only 0.0001% and 0.0002% (in mass fraction) of GONs were studied and their critical heat fluxes (CHF) during quenching were determined to increase markedly by 13.2% and 25.0%, respectively, as compared to that of pure water. Such efficient CHF enhancement was interpreted...

... temperatures of 23 and 35 °C, and saturation pressures of 10 and 45 kPa. The effects of the orifices on two-phase pressure drop, critical heat flux (CHF), and flow boiling heat transfer coefficient are studied. The results show that the pressure drop caused by the orifice takes a considerable portion...

...Ruander Cardenas; Vinod Narayanan Critical heat flux (CHF) characteristics in submerged jet impingement boiling of water on a heated copper surface are investigated at subatmospheric conditions. Data are reported at a fixed surface-to-nozzle diameter ratio of 23.8 and a fixed surface-to-nozzle...

...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...

...Ho Seon Ahn; Moo Hwan Kim Recently, there has been increasing interest in boiling nanofluids and their applications. Among the many articles that have been published, the critical heat flux (CHF) of nanofluids has drawn special attention because of its dramatic enhancement. This article includes...

...Tailian Chen; Suresh V. Garimella The cooling capacity of two-phase transport in microchannels is limited by the occurrence of critical heat flux (CHF). Due to the nature of the phenomenon, it is challenging to obtain reliable CHF data without causing damage to the device under test. In this work...

...Saptarshi Basu; Sidy Ndao; Gregory J. Michna; Yoav Peles; Michael K. Jensen A detailed experimental study was carried out on the critical heat flux (CHF) condition for flow boiling of R134a in single circular microtubes. The test sections had inner diameters (ID) of 0.50 mm, 0.96 mm, and 1.60 mm...

..., that the millimeter scale bead packed porous structures could greatly influence pool boiling heat transfer by forcing a single bubble to depart at a smaller size, as compared with that in a plain surface situation at low heat flux situations, and could trigger the earlier occurrence of critical heat flux by trapping...