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Showing 1 to 9 of 9 for “"Boiling Enhancement"”.
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Experimental analysis of boiling enhancement from surfactant addition with electric fields
… of the effect of surfactants on the boiling curve of water. Via adsorbtion to the boiling surface, surfactants alter the surface energy interaction during bubble formation at nucleation sites. The surfactants initially enhance the heat transfer coefficient at the onset of nucleate …
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Experimental and Numerical Study of Dual-Chamber Thermosyphon
… numerical investigation was conducted to study boiling and condensation - the two most important phenomena occurring in a dual-chamber thermosyphon. Boiling experiments were carried out using water at sub-atmospheric pressures of 9.7, 15 and 21 kPa with a three-dimensional porous boiling …
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Design guidelines of laser structured surfaces for enhanced pool boiling heat transfer
Boiling enhancement has emerged as a salient pathway to improve energy efficiency and reduce operating costs. In this work, we strengthen external pool boiling of R-1336mzz(Z) on tube exteriors by optimizing laser texturing recipes. Systematic adjustment of laser parameters enables deterministic …
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Nanoscale modification of key surface parameters to augment pool boiling heat transfer and critical heat flux in water and dielectric fluids
Surface effects on pool boiling heat transfer and the critical heat flux are well documented but poorly understood. This study investigates the pool boiling characteristics of various fluids, and demonstrates that surface effects can drastically alter the nucleate boiling heat transfer coefficient …
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Fundamentals of microlayer evaporation and its role on boiling heat transfer enhancement
<p>Boiling, a dynamic and multiscale process, is widely used in industrial applications as it can transfer a large amount of heat over a small surface area. It has been studied for over five decades; however, a comprehensive understanding of the process is still lacking. The bubble ebullition cycle …
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Characterization of pool boiling heat transfer from porous-coating-enhanced surfaces
<p>Development of techniques for enhancement and optimization of thermal management technologies has been a highly active area of research in recent decades in response to the rapid emergence of compact, high-power electronic systems. Immersion cooling by boiling is one of the preferred methods for …
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ENHANCEMENT OF SATURATION BOILING OF PF-5060 DIELECTRIC LIQUID ON MICROPOROUS SURFACES
… Copper (MPC) surfaces for enhancing nucleate boiling and increasing the Critical Heat Flux (CHF) of PF-5060 dielectric liquid and the potential application of the results to immersion cooling of high power computer chips. MPC surfaces of different thicknesses (80—230 \uf06dm), fabricated using …
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Enhancement of Nucleate Boiling on Rough and Dimpled Surfaces with Application to Composite Spreaders for Microprocessors Immersion Cooling
… of cooling such as immersion cooling by nucleate boiling of dielectric liquids are being considered. For electronic cooling applications, dielectric liquids are chemically inert, environmentally friendly, and have low saturation temperatures (34 — 56oC at 0.1 MPa) advantageous for keeping the …