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首页> 外文期刊>International Journal of Heat and Mass Transfer >Thermal and flow behavior of ice slurries in a vertical rectangular channel-Part Ⅱ. Forced convective melting heat transfer
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Thermal and flow behavior of ice slurries in a vertical rectangular channel-Part Ⅱ. Forced convective melting heat transfer

机译：垂直矩形通道中冰浆的热和流动特性-第二部分。强制对流熔化传热

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摘要

The convective heat transfer characteristics of ice slurries flowing vertically upward in a rectangular channel have been experimentally investigated. At steady state, the local heat transfer coefficients were obtained during convective melting, and the effects of ice fraction, Reynolds number and wall heat flux were determined. To gain more insights into the flow properties, local measurements of the axial mixture velocity, temperature and ice fraction distributions were also made near a heated wall. Four main factors were shown to enhance the convective heat transfer coefficient of ice slurries relative to single-phase flow: (1) the ice fraction, (2) thermally and/or hydrodynamically developing flow conditions, (3) mixed-convection and (4) non-Newtonian effects experienced at Re < 4000. Two new and simple heat transfer correlations are also proposed for the practical design of compact heat exchangers involving phase change ice slurries.
机译：实验研究了在矩形通道中垂直向上流动的冰浆的对流传热特性。在稳态下，在对流融化过程中获得了局部传热系数，并确定了冰分数，雷诺数和壁热通量的影响。为了获得对流动特性的更多了解，还对加热壁附近的轴向混合物速度，温度和冰分数分布进行了局部测量。相对于单相流，四个主要因素可提高冰浆的对流传热系数：（1）冰分数，（2）热和/或流体动力学发展的流动条件，（3）混合对流和（4） ）在Re <4000时经历了非牛顿效应。对于涉及相变冰浆的紧凑型换热器的实际设计，还提出了两种新的和简单的传热关系。

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