CFD modeling and performance evaluation of multipass solar air heaters
CFD modeling and performance evaluation of multipass solar air heaters
复制标题
多通道太阳能空气加热器的 CFD 建模和性能评估
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
P. Heggs
中科院分区：
文献类型：
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作者：
Moustafa Al;Z. A. Obaid;Mansour Al Qubeissi;D. Dixon;J. Cottom;P. Heggs
摘要本文研究了气流结构对太阳能集热系统热性能的影响。铝罐（RAC）已被用作双通道单管道太阳能空气收集器的散热器。使用COMSOL Multiphysics V5.3a的CFD软件对三种设计进行建模：并流（模型A）、逆流（模型B）和U形（模型C）。数值结果表明，U形设计提供了更大的热性能的5.4%和6.5%，分别与并流和逆流模型相比。此外，在数值模拟的基础上进行了室外试验。实验装置的模型C，即，太阳能空气加热器（SAH）没有RAC模型C-I（平原模型），SAH与线RAC布局（模型C-II），和SAH与交错RAC布局（模型C-III）进行了检查。结果表明，双通道单风道太阳能空气集热器（C型）的设计与实验数据吻合较好，C-Ⅲ型的热效率为60.2%，高于C-Ⅱ型的53.1%和C-Ⅰ型的49.4%。
Abstract This article investigates the impacts of flow configurations on the thermal performance of a solar heater system. Recycled aluminum cans (RACs) have been utilized as turbulators with a double pass single duct solar air collector. The CFD software of COMSOL Multiphysics V5.3a is used to model three designs: Cocurrent (model A), countercurrent (model B), and U-shape (model C). The numerical results reveal that the U-shape design offers a greater thermal performance of 5.4% and 6.5%, respectively, compared with the cocurrent and countercurrent flow models. Furthermore, an outdoor experiment is performed based on the numerical modeling of flow configurations. The experimental setup is examined for three configurations of model C, namely, solar air heater (SAH) without RAC model C-I (plain model), SAH with in-line RAC layout (model C-II), and SAH with staggered RAC layout (model C-III). We found the double pass single duct solar air collector (model C) design is in a good agreement with the experimental data, and model C-III has a better thermal efficiency of 60.2%, compared to those of model C-II, 53.1%, and model C-I, 49.4%.
影响因子：
6.4
作者：
Guarracino, Ilaria;Mellor, Alexander;Markides, Christos N.
通讯作者：
Markides, Christos N.