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首页> 外文期刊>International Journal of Heat and Mass Transfer >Flow and heat transfer characteristics of phase change emulsions in a circular tube: Part 1. Laminar flow
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Flow and heat transfer characteristics of phase change emulsions in a circular tube: Part 1. Laminar flow

机译：圆管中相变乳液的流动和传热特性：第1部分。层流

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摘要

The flow and heat transfer characteristics of phase change emulsions (PCEs) in a circular tube have been investigated. The PCEs were heated under constant heat flux. The wall heat flux and mass fraction of the dispersed phase change material (PCM) particles were varied as experimental parameters. The PCEs showed Newtonian fluid behavior when the PCM mass fraction was less than 20 mass%. When the PCM mass fraction was 30 mass%, the PCE showed pseudoplastic fluid behavior. The Nusselt number of the PCEs is higher than that of the single-phase fluid because of latent heat absorption accompanying melting of the PCM particles. The heat transfer characteristics of the PCEs for melting PCM particles were also investigated using a numerical model, and the results were compared with the experimental results. The numerical results approximately agree with the experimental results when the PCM mass fraction is 20 or 30 mass%.
机译：已经研究了圆形管中相变乳液（PCE）的流动和传热特性。在恒定的热通量下加热PCE。改变相变材料（PCM）颗粒的壁热通量和质量分数作为实验参数。当PCM质量分数小于20质量％时，PCE显示出牛顿流体行为。当PCM质量分数为30质量％时，PCE表现出假塑性流体行为。由于伴随PCM颗粒熔化的潜热吸收，PCE的Nusselt数高于单相流体。还使用数值模型研究了用于熔融PCM颗粒的PCE的传热特性，并将结果与​​实验结果进行了比较。当PCM质量分数为20或30质量％时，数值结果与实验结果大致一致。

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