Experimental study on direct contact condensation heat transfer in horizontal pipes = 수평관에서의 직접 접촉 응축 열전달에 관한 실험적 연구

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Direct contact condensation is important to the safety analysis for nuclear power plants. Experimental studies have been performed to study the condensation heat transfer in stratified flow in a horizontal pipe. The experimental facility is made by stainless steel pipe with a length of 2100 mm and a diameter of 70 mm. The local temperatures of water layer are measured to find the local condensation rates and the local condensation heat transfer coefficients. The interfacial motion is an important parameter to the heat transfer coefficients. There are two shapes in the interfacial motion. One is a smooth interface at the inclination angle 0°, the other is a rough interface at the inclination angle 3°. The Nusselt numbers are correlated in terms of the steam Reynolds number, the water Reynolds number and the water Prandtl number for the case of inclination angles 0° and 3°, respectively. The effects of the inlet water temperature, the flow direction (countercurrent or cocurrent), and the inclination angle on the heat transfer coefficients are investigated. The effects of the flow direction and the inlet water temperature are smaller than those of the inclination angle. The measured heat transfer coefficients are 1 - 10 kW/㎡K which is smaller than those of other``s.
Advisors
Chang, Song-Heungresearcher장순흥researcher
Description
한국과학기술원 : 원자력공학과,
Publisher
한국과학기술원
Issue Date
1995
Identifier
98921/325007 / 000933067
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 원자력공학과, 1995.2, [ vii, 49 p. ]

URI
http://hdl.handle.net/10203/49326
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=98921&flag=dissertation
Appears in Collection
NE-Theses_Master(석사논문)
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