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가열된 고체표면에 부착된 단일 액적의 증발냉각

유갑종;방창훈;김정수
Yu, Gap-Jong;Bang, Chang-Hun;Kim, Jeong-Su

  • 발행 : 2001.06.01

초록

The characteristics of evaporation cooling of single droplet on a heated surface were studied experimentally. The two kinds of heater modules were tested to measure cooling characteristics of metal surface (high conductivity) and Teflon surface (low-energy surface, low conductivity). The results showed that time averaged heat flux during droplet evaporation increased exponentially with initial surface temperatures of brass, copper and steel. The heat flux and evaporation time did not varied with metal conductivities. However, the temperature drop after the deposition of droplet was larger on Teflon than on the metals. Thus, the correlation of interface temperature between liquid droplet and metal surface was proposed as a function of the initial surface temperature of heating materials, which could be applied to both metal and non-metal ones.

키워드

증발냉각;단일액적;저에너지 표면;시간평균열유속

참고문헌

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