0
Research Papers: Evaporation, Boiling, and Condensation

Angular Dependency on Film Boiling Heat Transfer From Relatively Long Inclined Flat Plates

[+] Author and Article Information
Kune Y. Suh

e-mail: kysuh@snu.ac.kr
Department of Nuclear Engineering,
Seoul National University,
599 Gwanak-ro, Gwanak-gu,
Seoul 151-744, Korea

1Present address: Nuclear Hydrogen Production Reactor Technology Development Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon 305-353, Korea.

2Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received September 23, 2012; final manuscript received May 10, 2013; published online September 27, 2013. Assoc. Editor: W. Q. Tao.

J. Heat Transfer 135(12), 121502 (Sep 27, 2013) (8 pages) Paper No: HT-12-1518; doi: 10.1115/1.4024583 History: Received September 23, 2012; Revised May 10, 2013

The effect of inclination angle of the downward facing flat plate on the interfacial wavy motion is investigated utilizing the water quenching test apparatus downward ebullient laminar transition apparatus flat surface (DELTA-FS) in a quasi-steady state. Film boiling heat transfer coefficients are obtained on the relatively long surface in the flow direction. Interfacial velocities at the various inclination angles and wall superheat conditions are determined through the analysis of the visualized continuous snapshots with 1000 fps. Visualization of the vapor film reveals that the interfacial wavelength increases and the interfacial velocity decreases as the flat plate moves from the vertical to downward facing locations. A new semi-empirical correlation is developed from the measured heat transfer coefficients and interfacial velocities. The correlation shows good agreement with the previous water test results on vertical plates. In the case of the previous other fluid experimental results on the vertical plates, the correlation overpredicts the film boiling heat transfer coefficients at the experimental condition.

FIGURES IN THIS ARTICLE
<>
Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Schematic diagram of laminar wavy film boiling on the inclined flat plate

Grahic Jump Location
Fig. 2

Calculation process of unknown parameters considering interfacial wavy motion

Grahic Jump Location
Fig. 4

Location of thermocouples

Grahic Jump Location
Fig. 3

Experimental apparatus

Grahic Jump Location
Fig. 10

Comparative fluid characteristics

Grahic Jump Location
Fig. 6

Unknown parameters for semi-empirical correlation

Grahic Jump Location
Fig. 5

Film boiling with inclination angles during 0.02 s

Grahic Jump Location
Fig. 9

Comparison against experimental results with other fluids

Grahic Jump Location
Fig. 8

Comparison against other experimental results with water

Grahic Jump Location
Fig. 7

Film boiling heat transfer coefficients from inclined flat plates

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In