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Effect of channel hight on Bubble growth under Saturated Nucleate Pool Boiling for Various Channel Height using Heater with Artificial Cavity  

Kim, Jeong-Bae (Department of Energy System Engineering, Chungju National University)
Park, Moon-Hee (Daesung Institute for Clean Energy, Daegu City Gas)
Jeon, Woo-Cheol (Daesung Institute for Clean Energy, Daegu City Gas)
Publication Information
Journal of the Korean Solar Energy Society / v.30, no.5, 2010 , pp. 93-99 More about this Journal
Abstract
Nucleate pool boiling experiments with constant heat flux condition were performed using pure R113 for various channel heights under saturated pool condition. A circular heater of 1mm diameter, with artificial cavity in the center, fabricated using MEMS technique and the high-speed controller were used to maintain the constant heat flux. Images of bubble growth were taken at 5,000 frames per second using a high-speed CCD camera. The bubble geometry was obtained from the captured bubble images. The effects of channel height on the bubble growth behaviors were analyzed as dimensional scales for the initial and thermal growth regions. The parameters for the bubble growth behaviors were bubble radius, bubble growth rate, and bubble shapes. These phenomena require further analysis for various surface angles, but this study will provide good experimental data with constant heat flux boundary condition for such works.
Keywords
Artificial cavity; Channel height; Constant heat flux; Single bubble growth; Saturated nucleate pool boiling; Circular heater;
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Times Cited By KSCI : 2  (Citation Analysis)
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