Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Transient fluid temperature fluctuation in boiling

푸울 沸騰時 過渡的 流體溫度 變動

  • 김종일 (조선대학교 공대 기계공학과) ;
  • 정충식 (조선대학교 대학원)
  • Published : 1988.01.01
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Abstract

The present experiments of transient temperature variation and temperature fluctuation were conducted by bead type thermistors in pool boiling without a heat surface. The experimentally obtained conclusion were as follows. (1) The high transient temperature Variatian of 11.64.deg. C for a duration of 0.08 sec and a temperature freguency having a duration of 5.6*10$^{-2}$ sec in a flashing were measured. (2) The highest variation of transient temperature was shown at saturated temperature of 80.deg. C and superheat of 7.9.deg. C. (3) Temperature frequency was found to increase with superheat below 60.deg. C of saturated temperature, but above 60.deg. C it was relative to lower superheat and was found to decrease with higher superheat..

본 실험에서는 온도측정용 써미스터인 고감도의 비드형 써미니스터를 이용하여 물의 감압증발에 의한 불등식 푸울내의 깊이 방향과 반경방향의 온도변화를 연속적으로 측정하여 연구한 결과를 보고한다.

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