ABSTRACT

The effect of variation in open area ratio (β) in a multi-V rib roughened Single-Pass Solar Air Heater (SPSAH) is analyzed in this work. Fixing values of other parameters, such as open area ratio (β) and relative roughness width (W/w), were studied with a certain range of Reynolds number (Re) ranging from 2000 to 18000. The improvement in Nusselt number ratio (Nu/Nus) and thermo-hydraulic performance (THPP) and the decline in duct friction ratio (f/fs) support the application of perforation. The empirical correlations of Nu and f are also generated with ±12% and ±7.5% accuracy.

中文翻译：

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建立多 V 肋粗糙单通道太阳能空气加热器中穿孔引起的热工水力参数相关性

摘要

本文分析了多 V 肋粗糙化单通道太阳能空气加热器 (SPSAH) 中开口面积比 (β) 变化的影响。在雷诺数（Re）从2000到18000的一定范围内，研究了其他参数的固定值，例如开口面积比（β）和相对粗糙度宽度（W/w）。努塞尔数比（Nu）的改进/Nus）和热水力性能（THPP）以及管道摩擦比（f/fs）的下降支持了穿孔的应用。Nu 和f的经验相关性也以 ±12% 和 ±7.5% 的精度生成。