Flow boiling heat transfer to water in microchannels is experimentally investigated. The dimensions of the microchannels considered are and . The experiments are conducted at inlet water temperatures in the range of and mass fluxes of . The maximum heat flux investigated in the tests is and the maximum exit quality is 0.2. Convective boiling heat transfer coefficients are measured and compared to predictions from existing correlations for larger channels. While an existing correlation was found to provide satisfactory prediction of the heat transfer coefficient in subcooled boiling in microchannels, saturated boiling was not well predicted by the correlations for macrochannels. A new superposition model is developed to correlate the heat transfer data in the saturated boiling regime in microchannel flows. In this model, specific features of flow boiling in microchannels are incorporated while deriving analytical solutions for the convection enhancement factor and nucleate boiling suppression factor. Good agreement with the experimental measurements indicates that this model is suitable for use in analyzing boiling heat transfer in microchannel flows.
Skip Nav Destination
e-mail: dongliu@ecn.purdue.edu
e-mail: sureshg@ecn.purdue.edu
Article navigation
Technical Papers
Flow Boiling Heat Transfer in Microchannels
Dong Liu,
Dong Liu
Cooling Technologies Research Center, School of Mechanical Engineering,
e-mail: dongliu@ecn.purdue.edu
Purdue University
, West Lafayette, IN 47907-2088
Search for other works by this author on:
Suresh V. Garimella
Suresh V. Garimella
Cooling Technologies Research Center, School of Mechanical Engineering,
e-mail: sureshg@ecn.purdue.edu
Purdue University
, West Lafayette, IN 47907-2088
Search for other works by this author on:
Dong Liu
Cooling Technologies Research Center, School of Mechanical Engineering,
Purdue University
, West Lafayette, IN 47907-2088e-mail: dongliu@ecn.purdue.edu
Suresh V. Garimella
Cooling Technologies Research Center, School of Mechanical Engineering,
Purdue University
, West Lafayette, IN 47907-2088e-mail: sureshg@ecn.purdue.edu
J. Heat Transfer. Oct 2007, 129(10): 1321-1332 (12 pages)
Published Online: December 14, 2006
Article history
Received:
August 21, 2006
Revised:
December 14, 2006
Citation
Liu, D., and Garimella, S. V. (December 14, 2006). "Flow Boiling Heat Transfer in Microchannels." ASME. J. Heat Transfer. October 2007; 129(10): 1321–1332. https://doi.org/10.1115/1.2754944
Download citation file:
Get Email Alerts
Cited By
External Conjugate Boiling On Channels. A Graetz Problem With Multiple Solutions
J. Heat Mass Transfer
Related Articles
Theoretical Model for Nucleate Boiling Heat and Mass Transfer of
Binary Mixtures
J. Heat Transfer (December,2003)
Discussion: “Heat Transfer Mechanisms During Flow Boiling in Microchannels” (Kandlikar, S. G., 2004, ASME J. Heat Transfer, 126(1), pp. 8–16)
J. Heat Transfer (January,2012)
Investigation of Decisive Mixture Effects in Nucleate Boiling of
Binary Mixtures Using a Theoretical Model
J. Heat Transfer (December,2003)
Guest Editorial
J. Heat Transfer (February,2012)
Related Proceedings Papers
Related Chapters
Experiment Investigation of Flow Boiling Process Including Cavitation in Micro-Channel
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Post-CHF Heat Transfer in Flow Boiling
Two-Phase Heat Transfer
Even a Watched Pot Boils Eventually
Hot Air Rises and Heat Sinks: Everything You Know about Cooling Electronics Is Wrong