An experimental parametric investigation has been performed to assess the effect of gas injection on convective heat transfer from a constant heat flux surface to an impinging liquid jet in the absence of boiling. Capillary tubes were inserted into a planar nozzle and extended to a point near the nozzle opening along the nozzle midplane. Air was used as the gas phase and water was used as the liquid phase. The air was injected into the capillary tubes and combined with the water to form a two-phase jet. Convective heat transfer coefficients were enhanced by factors as high as 2.2 near the stagnation line and 1.6 at a distance of five jet widths with no discernible change in pressure drop in the water supply system. Results are generalized and referenced to conditions for single-phase, liquid jet correlations to facilitate heat transfer estimations in applications.
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Convective Heat Transfer Enhancement Due to Gas Injection Into an Impinging Liquid Jet
D. A. Zumbrunnen,
D. A. Zumbrunnen
Thermal and Fluid Sciences Research Laboratory, School of Mechanical and Industrial Engineering, Clemson University, Clemson, SC 29634-0921
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M. Balasubramanian
M. Balasubramanian
Thermal and Fluid Sciences Research Laboratory, School of Mechanical and Industrial Engineering, Clemson University, Clemson, SC 29634-0921
Search for other works by this author on:
D. A. Zumbrunnen
Thermal and Fluid Sciences Research Laboratory, School of Mechanical and Industrial Engineering, Clemson University, Clemson, SC 29634-0921
M. Balasubramanian
Thermal and Fluid Sciences Research Laboratory, School of Mechanical and Industrial Engineering, Clemson University, Clemson, SC 29634-0921
J. Heat Transfer. Nov 1995, 117(4): 1011-1017 (7 pages)
Published Online: November 1, 1995
Article history
Received:
December 1, 1994
Revised:
April 1, 1995
Online:
January 23, 2008
Citation
Zumbrunnen, D. A., and Balasubramanian, M. (November 1, 1995). "Convective Heat Transfer Enhancement Due to Gas Injection Into an Impinging Liquid Jet." ASME. J. Heat Transfer. November 1995; 117(4): 1011–1017. https://doi.org/10.1115/1.2836275
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