Rheology, flow behaviour and heat transfer of ice slurries: a review of the state of the art
Rheology, flow behaviour and heat transfer of ice slurries: a review of the state of the art
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DOI：
10.1016/s0140-7007(02)00016-6
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
V. Ayel;O. Lottin;H. Peerhossaini
中科院分区：
文献类型：
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作者：
V. Ayel;O. Lottin;H. Peerhossaini
本文综述了近年来两相含水二次制冷剂(冰浆)的流变性、流动行为和换热的研究进展。分析了标准流变仪不能很好地适用于测量其流变性的困难。特别注意“杯中叶片”流变仪，它使确定屈服应力成为可能。许多作者已经测量了圆柱管的压力损失。即使结果基本符合两相流理论，也可以观察到对固体分数的敏感度存在差异。讨论了一些作者对小雷诺数流动观察到的分层现象及其对压降的影响。最后，总结了有关冰浆换热系数数值的信息。换热系数取决于许多参数，但很大程度上受流型的影响。在此基础上提出了一种换热器的几何形状，该换热器对单相流是有效的，并且可以强化冰浆流动中的换热。
This paper reviews recent studies on rheology, flow behaviour and heat transfer of two-phase aqueous secondary refrigerants (ice slurries). The difficulties in measuring their rheological properties for which standard rheometers prove to be poorly adapted are analysed. Special attention is paid to “vane-in-cup” rheometers, which can make it possible to determine the yield stress. Pressure losses in cylindrical tubes have been measured by many authors. Even if the results generally agree with two-phase flow theory, divergences in sensitivity to the solid fraction can be observed. The stratification observed by some authors for small-Reynolds-number flows and its effects on the pressure drop are addressed. In a last part, information concerning numerical values of the heat transfer coefficient of ice slurries are summarized. Heat transfer coefficients depend on many parameters, but are largely influenced by the flow regime. A geometry of heat exchanger is then proposed, which has already been effective for single-phase flows, and which may enhance heat transfer in ice slurry flows.