文章基本信息

标题：Experimental investigation of solar air heater duct with discrete V-rib integrated with staggered elements
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作者：Sumer Singh Patel ; Atul Lanjewar
期刊名称：International Journal of Sustainable Engineering
印刷版ISSN：1939-7038
出版年度：2021
卷号：14
期号：2
页码：162-171
DOI：10.1080/19397038.2020.1737752
语种：English
出版社：Taylor & Francis Group
摘要：ABSTRACTThis paper presents an experimental investigation of heat transfer and friction factor in a rectangular duct with discrete V-rib integrated with staggered elements. The Reynolds number (Re) of 3000–12,000, ratio of staggered element size to rib height (r/e) of 2–5.5, relative roughness pitch (p/e) of 12, relative roughness height (e/Dh) of 0.045, flow angle of attack (α) of 60°, relative gap width (g/e) of 1, relative staggered element position (p’/p) of 0.65 and number of gaps (Ng) of 6. The maximum augmentation in Stanton number is 1.90 times over the smooth duct and maximum thermal efficiency is obtained 86% corresponding to ratio of staggered element size to rib height (r/e) of 3.5.
关键词：KEYWORDSSolar air heaterStanton numberfriction factorthermal efficiencyV-rib