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Keywords: Critical Heat Flux
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Proceedings Papers

Proc. ASME. HT2022, ASME 2022 Heat Transfer Summer Conference, V001T09A004, July 11–13, 2022
Paper No: HT2022-85429
... instabilities, e.g., the critical heat flux (CHF), aka departure from nucleate boiling (DNB) in the nuclear industry, flow maldistribution, flow reversal, among others. These instabilities are often triggered suddenly during normal operation, and if not identified and mitigated in time, will lead to overheating...
Proceedings Papers

Proc. ASME. HT2022, ASME 2022 Heat Transfer Summer Conference, V001T08A004, July 11–13, 2022
Paper No: HT2022-85582
...Proceedings of the ASME 2022 Heat Transfer Summer Conference HT2022 July 11-13, 2022, Philadelphia, Pennsylvania HT2022-85582 SUPERVISED AND UNSUPERVISED LEARNING MODELS FOR DETECTION OF CRITICAL HEAT FLUX DURING POOL BOILING Christy Dunlap Department of Mechanical Engineering, University...
Proceedings Papers

Proc. ASME. HT2020, ASME 2020 Heat Transfer Summer Conference, V001T16A001, July 13–15, 2020
Paper No: HT2020-8924
... with the experimental data. Keywords: Pool boiling; Critical heat flux; Nucleate boiling; HFE-7000 dielectric liquid; Rough copper surfaces; Inclination angle, Submersion cooling, static contact angle. NOMENCLATURE CHF critical heat flux (W/cm2) BFOM boiling figure-of-merit L v hfg) Cu Copper g acceleration of gravity...
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, V002T07A014, July 14–19, 2013
Paper No: HT2013-17126
...-245fa 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. Experiments were carried out at pressures ranging from 0.15 MPa...
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. HT2009, Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer, 259-267, July 19–23, 2009
Paper No: HT2009-88153
... and moderate heat fluxes (q ″ <110 W/cm 2 for G = 224 kg/m 2 s), which was a feature of nucleate boiling mechanism. Pressure drop through microchannels heat sink was found to be below 4kPa. microchannels flow boiling heat transfer critical heat flux Proceedings of HT2009 2009 ASME Summer Heat...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 3, 977-983, July 17–22, 2005
Paper No: HT2005-72175
... 03 04 2009 A new generalized CHF (Critical Heat Flux) correlation was suggested for water flow in uniformly heated Annulur tubes. The parametric ranges of experimental CHF data used for present analysis were as follows: 0.540< P (pressure) < 15.146 MPa, 197.77 < G (mass flux...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 2, 163-170, July 17–22, 2005
Paper No: HT2005-72504
... 03 04 2009 In this study a method to predict CHF (Critical Heat Flux) in vertical round tubes with cosine heat flux distribution was examined. For this purpose a uniform correlation, based on local condition hypothesis, was developed from 9,366 CHF data points of uniform heat flux...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 4, 511-519, July 11–15, 2004
Paper No: HT-FED2004-56582
.... This paper also discusses 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. boiling two phase heat transfer coefficient critical heat flux minichannel heat exchanger microchannel...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 3, 711-716, July 11–15, 2004
Paper No: HT-FED2004-56554
... FGITCFGU VJG JGCV VTCPUHGT GPJCPEGOGPV TGCNK\GF VJTQWIJ GDWNNKVKQP Galloway and Mudawar [3] isolated a critical heat flux mechanism associated with flow boiling by identifying the coalescence of vapor bubbles at high heat fluxes into a wave of vapor, which propagates downstream with the bulk flow...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 3, 591-599, July 11–15, 2004
Paper No: HT-FED2004-56301
... hypothesis give significant correlations for the prediction of CHF (Critical Heat Flux), using only few local variables. In this work, a study was carried out to develop a generalized CHF correlation in vertical round tubes with uniform heat flux. For this analysis, a CHF database that composed of over...
Proceedings Papers

Proc. ASME. HT2003, Heat Transfer: Volume 2, 623-630, July 21–23, 2003
Paper No: HT2003-47460
... 18 12 2008 For empirical models based on the local condition hypothesis, few important parameters give significant correlations on the prediction of CHF (Critical Heat Flux). This work is a preliminary study to develop a generalized CHF correlation in uniformly heated vertical round...