가공관의 외벽에서 친수성 표면처리가 증발열전달에 미치는 영향

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박노성;황규대;김호영;강병하;정진택
Park, No-Seong;Hwang, Gyu-Dae;Kim, Ho-Yeong;Gang, Byeong-Ha;Jeong, Jin-Taek

  • 발행 : 2001.05.01

초록

Experiments have been carried out to investigate the evaporation heat transfer characteristics of various tubes on which hydrophilic surface treatment using plasma was employed. Spiral, corrugated and low-finned tubes were selected as test tubes. The evaporator tubes were bundled to form three rows of tubes connected in series, with each row being 400mm long. The results obtained indicate that hydrophilic treated tubes tested exhibit better evaporation heat transfer performance as compared with untreated tubes. It is found that the high wettability of the surface obtained through hydrophilic treatment induces film flow onto the tubes during the evaporation process, while sessile drops are formed on untreated tubes.

키워드

친수성 표면처리;흡수식 냉동기;증발열전달;총괄열전달계수

참고문헌

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