冷凝
喷嘴
材料科学
水蒸气
喷射(流体)
传热
雷诺数
热力学
蒸汽压缩蒸发
机械
传质
气象学
物理
湍流
作者
Jinho Cha,Taejoon Kim,Seungho Lim,Haneol Lee,Weon Gyu Shin
标识
DOI:10.1016/j.anucene.2019.05.052
摘要
For the steam jet impinged onto the water surface, we experimentally investigated the effect of Reynolds number (Re) and nozzle-to-water surface distance (z/d) on the condensation and heat transfer. The range of Re is from 51,332 to 140,089 and nozzle-to-water surface distance is from 40 to 70 nozzle diameter. In order to quantitatively analyze the condensation of steam vapor on the water surface and on the wall of water tank, the mass and energy balance equations were derived and solved. The results indicate that the condensation of steam vapor on the water surface increases with as Re increases and z/d decreases. Thus, the amount of heat transfer by condensation of steam vapor on the water surface also increases as Re increases and z/d decreases. Finally, a correlation for the heat transfer was developed by combining the experimental parameters.
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