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首页> 外文期刊>Renewable energy >Experimental study of enhancement of heat transfer and pressure drop in a solar air channel with discretized broken V-pattern baffle
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Experimental study of enhancement of heat transfer and pressure drop in a solar air channel with discretized broken V-pattern baffle

机译：离散V型折流板折流板增强太阳空气通道传热和压降的实验研究

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This article presents an experimental study on heat transfer and friction characteristics of solar air channel fitted with discretized broken V-pattern baffle on the heated plate. The effect of geometrical parameters, predominantly the gap width and gap location has been investigated. The roughened baffle air channel has a width to height ratio, W/H of 10. The relative baffle gap distance, D-d/L-v and relative baffle gap width, g(W)/H-b has been varied from 0.26 to 0.83 and 0.5-1.5, respectively. Experiments have been carried out for the range of Reynolds number; Re from 3000 to 21,000 with the relative baffle height, H-b/H range of 0.25-0.80, relative baffle pitch, P-b/H range of 0.5-2.5; and angle of attack, as range of 30 degrees-70 degrees. The optimal values of geometrical parameters of roughness have been obtained and discussed. For Nu(rs) the greatest enhancement of the order of 4.47 times of the corresponding data of the without channel has been obtained. The absolute highest data of thermal hydraulic performance parameter has been found to be greater corresponding to D-d/L-v, of 0.67, g(w)/H-b of 1.0, H-b/H of 0.50, P-b/H of 1.5, and alpha(a) of 60 degrees. The maximum value of the thermal hydraulic performance parameter was found to be 3.14 for the range of parameters investigated. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文对在加热板上装有离散V型折断隔板的太阳能空气通道的传热和摩擦特性进行了实验研究。研究了几何参数的影响，主要是间隙宽度和间隙位置。粗糙的挡板空气通道的宽高比W / H为10。相对挡板间隙距离Dd / Lv和相对挡板间隙宽度g（W）/ Hb已从0.26变为0.83和0.5-1.5 ， 分别。已经对雷诺数的范围进行了实验； Re从3000到21,000，相对挡板高度，H-b / H范围为0.25-0.80，相对挡板间距，P-b / H范围为0.5-2.5；和迎角，范围为30度至70度。已经获得并讨论了粗糙度几何参数的最佳值。对于Nu（rs），已获得无通道对应数据的4.47倍量级的最大增强。已经发现，热液性能参数的绝对最高数据更大，分别对应于Dd / Lv为0.67，g（w）/ Hb为1.0，Hb / H为0.50，Pb / H为1.5和alpha（a） 60度对于所研究的参数范围，发现热液压性能参数的最大值为3.14。 （C）2016 Elsevier Ltd.保留所有权利。

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