Purpose

Over the recent years, solar energy has received outstanding attention from researchers. Solar energy applications and related large-scale projects are increasing to meet growing global energy demand as an economical, non-polluting and renewable energy source. The purpose of this study is investigating different plenum and absorber configurations of solar air heating wall (SAHW) experimentally and numerically.

Design/methodology/approach

In this study, various configurations of SAHW have been numerically simulated to determine the most effective design. According to the simulation results, two SAHWs with various plenum thicknesses have been fabricated and tested at different conditions.

Findings

Numerical simulation results indicated that parallel-flow SAHWs exhibited better performance in comparison with other placements of absorber plate. Regarding to the experimentally attained results, the highest thermal efficiency was reached to 80.51%. Also, the average deviation between experimentally and numerically obtained outlet temperature is 5.5%.

Originality/value

Considering the obtained results in the present study, designed SAHW has admissible efficiency to be used in various industrial and residential applications such as; air preheating, space heating and drying.

中文翻译：

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不同增压室和吸收器配置的平行通道强制对流太阳能空气采暖墙数值及实验分析

目的

近年来，太阳能受到了研究人员的极大关注。太阳能应用和相关的大型项目正在增加，以满足日益增长的全球能源需求，作为一种经济、无污染的可再生能源。本研究的目的是通过实验和数值研究太阳能空气加热墙 (SAHW) 的不同增压室和吸收器配置。

设计/方法/方法

在这项研究中，对 SAHW 的各种配置进行了数值模拟，以确定最有效的设计。根据模拟结果，制造了两种不同压力室厚度的SAHW，并在不同条件下进行了测试。

发现

数值模拟结果表明，与吸收板的其他位置相比，平行流式 SAHW 表现出更好的性能。关于实验获得的结果，最高热效率达到了80.51%。此外，实验和数值获得的出口温度之间的平均偏差为 5.5%。

原创性/价值

考虑到本研究中获得的结果，设计的 SAHW 具有可接受的效率，可用于各种工业和住宅应用，例如：空气预热、空间加热和干燥。