... Abstract To fill the research gap in the study of R410A flow boiling on composite surfaces, four heat exchange tubes with different structures were tested: an enhanced tube with herringbone teeth (EHT_HB), a tube with a dimple structure (EHT_DIM), a tube with a composite herringbone tooth...

... transfer (boiling and condensation) which is efficient and capable of handling high heat fluxes and is an order of magnitude higher than the forced convection of liquid cooling. In this study, an experimental investigation was performed using P2PL with R-134a for analyzing subcooled flow boiling...

... Abstract Flow boiling in microchannels is a promising approach to solve the heat dissipation problems of the electronic components. In this work, two types of interconnected slot microchannels (SM) with the staggered (SSM) and in-line (ISM) arrangement of the slots (W = 300μm, H = 600μm...

... sensible heat transfer involved. The knowledge of heat transfer coefficients and their parametric behaviors can be utilized to improve the accuracy of models used for designing and optimizing heat transfer equipment for more effective thermal management applications. In two-phase flow boiling heat transfer...

... bubble and two bubbles inside a microchannel. wall heat transfer is better when two bubbles do not merge together compared to the single bubble and when they do merge. multiple bubble flow boiling microchannel heat transfer Proceedings of the ASME 2022 Heat Transfer Summer Conference HT2022...

... Abstract Microchannel heat sinks have attracted much attention due to its superiority of removing high heat flux with a very small size, which recently have been applied in the electronic cooling. The flow boiling of deionized water in the ultrahigh-aspect-ratio copper microchannels...

... Abstract A flow boiling heat transfer experimental investigation on the shell-side of a smooth tube and two enhanced tubes (C-EHT, P-EHT) was performed using R410A as working fluid. The outer surface of the C-EHT tube is covered with special fins having a salient height, and the inner surface...

... stratified, slug, and annular flow even dry-out may exist during the flow boiling experiments, while both ΔT-dependent and ΔT-independent flow are included for the test conditions of condensation. The results for evaporation have shown that the plain aluminum tube performs the best for all tested mass...

..., thermal management technologies using flow boiling in microchannel heat sink can dissipate higher heat fluxes. Flow boiling technologies in micro channel heat sinks are not commercially established due to issues such as reliability, flow reversal, dry out, critical heat flux, limited knowledge of bubble...

... mixtures (b) a gas-phase catalytic reactor. We focus on the fundamental experimental heat transfer studies (pool and flow boiling of ethanol-water mixtures) required for the primary pre-heater boiler design. Flow boiling results (in a 256 μm square channel) clearly show the influence of mixture composition...

... Heat transfer coefficients in sub-cooled flow boiling in symmetrically heated narrow gap channels are reported at power densities of 1 kW/cm 3 and greater. A pair of parallel ceramic resistance heaters in a nearly adiabatic housing forms the flow passage with length-to-gap ratios of 16:1 and 34...

... 1 Copyright © 2012 by ASME Effect of Cross Groove on Flow Boiling in a Microgap A.K.M. M. Morshed, Titan C. Paul, Jamil A. Khan Department of Mechanical Engineering University of South Carolina, Columbia, SC, USA ABSTRACT Flow boiling performance of a microgap channel has been investigated...

.... Keywords: microchannels, flow boiling, heat transfer, critical heat flux 1. INTRODUCTION Researches on high heat flux compact cooling technologies were motivated by the increasing heat generation rates in VLSI circuits and high power semiconductor laser thermal weapons. Microchannels heat transfer system...

... 23 02 2010 Experiments are conducted with a perfluorinated dielectric fluid, Fluorinert FC-77, to investigate the effects of channel width, depth, and aspect ratio on flow boiling heat transfer and flow patterns in microchannels. Experiments are performed for a fixed mass flux of 630...

... the channel width. Bubble formation, growth, coalescence and detachment at the outlet of the array are characterized by the Weber number. microchannels flow boiling bubble dynamics vapor slug flow flow visualization Proceedings of the 2008 Summer Heat Transfer Conference HT2008 August 10-14...

... database. Overall heat transfer coefficients in flow boiling are estimated in the range 65 to 325 kW/m 2 -K. The present experiments more nearly emulate conditions for practical micro-channel heat exchangers compared to those of reported studies using artificially induced two-phase flows and either one...

... and gas flows, smooth liquid-gas interface, and strong entrainment and deposition effects are incorporated into the model. The model shows good agreement with experimental data for water-cooled heat sinks. micro-channel heat sink adiabatic two-phase flow flow boiling electronic cooling...