대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)
- 제20권4호
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- Pages.1406-1415
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- 1996
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
천공판의 풀비등 열전달 촉진에 대한 연구
Pool boiling heat transfer enhancement by perforated plates
- 김내현 (인천대학교 기계공학과)
- 발행 : 1996.04.01
초록
Several recent studies have revealed that boiling heat transfer may be considerably enhanced in a narrow restricted region. In his study, the narrow restricted region was formed by attaching a perforated plate on top of a boiling surface. Through systematic experiments, effects of the hole size, hole pattern, gap width between the perforated plate and the boiling surface were investigated using water or R-113. Results show that perforated plates considerably enhance the boiling of water or R-113. For water, especially, they have outperformed commercial enhanced tubes, which confirms that boiling enhancement mechanism of the perforated plate (thin film evaporation beneath the elongated bubble) is very effective to the boiling of high surface tension liquids such as water. Optimum configuration was found - 3.0 mm hole diameter, 15 mm * 15 mm hole pattern, 0.3 ~ 0.5 mm gap width for water, and 2.0 mm hole diameter, 3.5 mm * 3.5 mm hole pattern, O.5 mm gap width for R-113. A correlation which correlates most of the data within .+-. 30% was also developed.