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Keywords: microchannel
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Proceedings Papers

Proc. ASME. HT2019, ASME 2019 Heat Transfer Summer Conference, V001T07A005, July 14–17, 2019
Paper No: HT2019-3608
... Abstract In this study numerical investigation has been conducted employing pulsating flow in a MicroChannel Heat Sink (MCHS) with phase change material (N-eicosane) as the coolant. The numerical investigation was conducted with H1 boundary condition and laminar pulsating flow condition using...
Proceedings Papers

Proc. ASME. HT2019, ASME 2019 Heat Transfer Summer Conference, V001T08A002, July 14–17, 2019
Paper No: HT2019-3567
... Abstract The understanding of the liquid-gas flow and heat transfer in the high-aspect-ratio microchannel is very important to realize the high-efficiency phase change chip cooling. In this work, a novel ultra-high-aspect-ratio microchannel with capillary-structured wall was developed...
Proceedings Papers

Proc. ASME. HT2013, Volume 2: Heat Transfer Enhancement for Practical Applications; Heat and Mass Transfer in Fire and Combustion; Heat Transfer in Multiphase Systems; Heat and Mass Transfer in Biotechnology, V002T07A023, July 14–19, 2013
Paper No: HT2013-17668
.... After benchmarking the setup against pure fluids, variation of heat transfer coefficient, bubble growth, contact angles, are compared at different operating conditions. Results show strong degradation in heat transfer in mixtures, which increases with operating temperature. Microchannel Binary...
Proceedings Papers

Proc. ASME. HT2012, Volume 2: Heat Transfer Enhancement for Practical Applications; Fire and Combustion; Multi-Phase Systems; Heat Transfer in Electronic Equipment; Low Temperature Heat Transfer; Computational Heat Transfer, 695-701, July 8–12, 2012
Paper No: HT2012-58335
... The benefits of eliminating instabilities in two-phase microchannel flow with inlet orifices come with costs. This study describes the tradeoffs between microchannels with and without inlet orifices, focusing on results from critical heat flux data obtained for various orifice sizes and mass...
Proceedings Papers

Proc. ASME. HT2012, Volume 2: Heat Transfer Enhancement for Practical Applications; Fire and Combustion; Multi-Phase Systems; Heat Transfer in Electronic Equipment; Low Temperature Heat Transfer; Computational Heat Transfer, 539-546, July 8–12, 2012
Paper No: HT2012-58503
.... An open loop experimental setup was created to investigate heat transfer phenomena in evaporator. Experiments were carried out with variety of configurations. Evaporator consists of microchannel plates with groove width 100 and 300 micrometers, wick (metal and non-metal porous materials were used...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 303-307, July 19–23, 2009
Paper No: HT2009-88464
... An experimental system for single-phase gas flow in microchannels was set up. The effects of viscous heating on the temperature field in the flow were studied experimentally. Also, a theoretical model for the flow and heat transfer in the slip flow region was developed and the resulting...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 907-916, July 19–23, 2009
Paper No: HT2009-88331
... 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 kg/m 2 s with eleven...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 629-636, July 19–23, 2009
Paper No: HT2009-88230
... fluid. And the opposite trend happens when the temperature of the surroundings are lower than the inlet temperature of the cold fluid. 23 02 2010 Microchannel Heat exchangers NTU Effectiveness Parallel flow channels 1 Copyright © 2009 by ASME Proceedings of the ASME 2009 Heat...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 637-646, July 19–23, 2009
Paper No: HT2009-88250
... The thermal model of a balance counter flow microchannel heat exchanger subjected to external heat transfer and axial heat conduction is modeled in this paper. Three governing equations are developed, one for each of the two fluids and the third for the wall separating the fluids. The ends...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 583-591, July 19–23, 2009
Paper No: HT2009-88167
... The effect of external heat transfer and internal heat generation on the thermal performance of a balanced counter flow microchannel heat exchanger is theoretically analyzed in this paper. External heat transfer occurs due to the thermal interaction between ambient and the fluids. Internal heat...
Proceedings Papers

Proc. ASME. HT2007, ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 3, 707-714, July 8–12, 2007
Paper No: HT2007-32916
... by the inlet conditions. gas-liquid two-phase flow microchannel inlet geometry flow pattern pressure drop heat transfer 1 Copyright © 2007 by ASME Proceedings of HT2007 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference July 8-12, 2007, Vancouver, British Columbia, CANADA HT2007...
Proceedings Papers

Proc. ASME. HT2008, Heat Transfer: Volume 2, 457-463, August 10–14, 2008
Paper No: HT2008-56342
... 10 07 2009 The effect of different parameters on dispersion of nanoparticles in a microchannel in slip flow regime is studied. The equations of particle motion and energy balance are solved numerically and the effect of particle diameter, starting position of particles in microchannel...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 4, 861-864, July 17–22, 2005
Paper No: HT2005-72830
... De-ionized (DI) water flow in microchannels with periodically mounted in-line array of cubes is investigated experimentally. The array of 505 micron cubes are fabricated within silicon channels to generate so-called self-sustained oscillating flow for the purpose of improving the heating wall...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 4, 639-646, July 11–15, 2004
Paper No: HT-FED2004-56756
... and desorption through the membrane under high heat flux and low inlet flow conditions. 03 03 2009 desorption microchannel binary two-phase flow Proceedings of ASME HT-FED2004: Heat Transfer Fluids Engineering Summer Conference difference across the membrane, for an inlet mass fraction...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 4, 511-519, July 11–15, 2004
Paper No: HT-FED2004-56582
... the reasons for calculating heat flux based on heated area and based on wetted channel area. The need to identify clearly the basis of heat flux is addressed. 03 03 2009 boiling two phase heat transfer coefficient critical heat flux minichannel heat exchanger microchannel superheating...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 4, 559-564, July 11–15, 2004
Paper No: HT-FED2004-56660
... An experimental study is presented in which ammonia is desorbed from a binary mixture of ammonia and water using a network of microscale fractal-like branching channels. The objectives of the study are (1) to determine feasibility of desorption by boiling the fluid mixture inside a microchannel...