Journal of Mechanical Science and Technology

  • 제20권5호
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  • Pages.692-709
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  • 2006
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Experimental Study on Single Bubble Growth Under Subcooled, Saturated, and Superheated Nucleate Pool Boiling

  • Kim Jeong-Bae (New & Renewable Energy Research Department, KIER (Korea Institute of Energy Research)) ;
  • Lee Jang-Ho (Department of Mechanical Engineering, Kunsan National University) ;
  • Kim Moo-Hwan (Department of Mechanical Engineering, Pohang University of Science and Technology)
  • 발행 : 2006.05.01
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초록

Nucleate pool boiling experiments with constant wall temperature were performed using pure R1l3 for subcooled, saturated, and superheated pool conditions. A microscale heater array and Wheatstone bridge circuits were used to maintain the constant wall temperature and to measure the instantaneous heat flow rate accurately with high temporal and spatial resolutions. Images of bubble growth were taken at 5,000 frames per second using a high-speed CCD camera synchronized with the heat flow rate measurements. The bubble geometry was obtained from the captured bubble images. The effect of the pool conditions on the bubble growth behavior was analyzed using dimensionless parameters for the initial and thermal growth regions. The effect of the pool conditions on the heat flow rate behavior was also examined. This study will provide good experimental data with precise constant wall temperature boundary condition for such works.

키워드

참고문헌

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