• 제목/요약/키워드: Lipuid Film

검색결과 1건 처리시간 0.014초

전장을 이용한 수평관 주위에서의 응축 열전달촉진에 관한 실험적 연구 (Experimental Study on the Enhancement of Condensation Heat Transfer on a Single Horizontal Tube Utilizing EHD)

  • 유갑종;추홍록;김석준;이성진
    • 대한기계학회논문집
    • /
    • 제18권11호
    • /
    • pp.3008-3020
    • /
    • 1994
  • Condensation heat transfer on a single horizontal tube with electric fields (Electro-Hydro-Dynamics, (EHD)) has been studied experimentally. Results are presented for EHD enhanced condensation of R-113 on a single horizontal tube using several electrode geometries. Especially, its attention was focused on the effects of electrode geometry, electric field strength and the gap of the electrode. In this study, single wire, helical, ring and mesh electrode were used. The range of the imposed voltage was 0~20 kV. As the voltage was increased the surface of liquid became an unstable wave, stream jet, liquid column and then liquid extraction in sequence. Among the various kinds of electrodes, the single wire electrode is suitable for practical application.