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Multiphase Science and Technology

Publication de 4  numéros par an

ISSN Imprimer: 0276-1459

ISSN En ligne: 1943-6181

SJR: 0.144 SNIP: 0.256 CiteScore™:: 1.1 H-Index: 24

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LOCAL FLOW BOILING HEAT TRANSFER COEFFICIENTS IN NARROW CONDUITS

Volume 12, Numéro 3&4, 2000, 16 pages
DOI: 10.1615/MultScienTechn.v12.i3-4.80
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RÉSUMÉ

This paper presents local saturated and subcooled boiling heat transfer coefficients for flow in narrow conduits. Flow of Freon R11, HCFC123 and CO2 in circular pipes with diameters of 0.92 and 1.95 mm over a wide range of heat fluxes, mass fluxes, qualities and system pressures is examined. In all cases the saturated boiling heat transfer coefficient is found to be a function of the wall heat flux and not of the mass flux or quality, indicating the dominant heat transfer mechanism is nucleate boiling. The saturated data are fitted well by the nucleate pool boiling correlation of Cooper. The subcooled data suggest that heat transfer is also controlled by nucleation phenomena and a model based on the mixing of subcooled fluid into the superheated layer adjacent to the wall is proposed.

CITÉ PAR
  1. Baird J.R., Fletcher D.F., Haynes B.S., Local condensation heat transfer rates in fine passages, International Journal of Heat and Mass Transfer, 46, 23, 2003. Crossref

  2. Asadolahi Azadeh N., Gupta Raghvendra, Leung Sharon S.Y., Fletcher David F., Haynes Brian S., Validation of a CFD model of Taylor flow hydrodynamics and heat transfer, Chemical Engineering Science, 69, 1, 2012. Crossref

  3. Guo Z., Fletcher D.F., Haynes B.S., A Review of Computational Modelling of Flow Boiling in Microchannels, The Journal of Computational Multiphase Flows, 6, 2, 2014. Crossref

  4. Haynes B.S., Fletcher D.F., Subcooled flow boiling heat transfer in narrow passages, International Journal of Heat and Mass Transfer, 46, 19, 2003. Crossref

  5. Guo Zhenyi, Fletcher David F., Haynes Brian S., Implementation of a height function method to alleviate spurious currents in CFD modelling of annular flow in microchannels, Applied Mathematical Modelling, 39, 16, 2015. Crossref

  6. Parveen Nusrat, Zaidi Sadaf, Danish Mohammad, Modeling of flow boiling heat transfer coefficient of R11 in mini-channels using support vector machines and its comparative analysis with the existing correlations, Heat and Mass Transfer, 55, 1, 2019. Crossref

  7. Dupont V., Thome J. R., Evaporation in microchannels: influence of the channel diameter on heat transfer, Microfluidics and Nanofluidics, 1, 2, 2005. Crossref

  8. Thome John R., Boiling in microchannels: a review of experiment and theory, International Journal of Heat and Fluid Flow, 25, 2, 2004. Crossref

  9. Dupont V., Thome J.R., Jacobi A.M., Heat transfer model for evaporation in microchannels. Part II: comparison with the database, International Journal of Heat and Mass Transfer, 47, 14-16, 2004. Crossref

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