Experimental assessment of thermohydraulic performance on counter flow impinging air solar heater integrated with arc shaped roughness

IF 1.7 4区工程技术 Q3 MECHANICS

Heat and Mass Transfer Pub Date : 2024-06-21 DOI:10.1007/s00231-024-03492-x

P. Michael Joseph Stalin, Murugesan Palaniappan, S. Karthikeyan, R. Ramkumar, B. Prabu, Gaddam Kalyani

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Abstract

The aim of this research is to conduct an experiment that will evaluate the effect of combining of counter flow air-impinging arrangement and an arc-shaped turbulators over the absorber plate of solar heater. This combination is intended to improve the thermohydraulic performance of the solar air heater. The parameters such as energy transfer and frictional factor are studied at flow Reynolds number varies from 18,000 to 3600, and the influence of a hole jet bore ratio from 0.0430 to 0.109 is considered. At the optimal hole jet bore ratio of 0.0650, the thermo-hydraulic achievement parameter has a value of 1.75, which is the greatest possible value can be attained. When compared to multi-pass V and multiple V roughened solar air heaters based on the THAP, the current work is improved the performance by 55.3 and 32.9%, respectively. Such comparisons clearly demonstrate the superiority of the present work. Furthermore, a relationship is shown between the jet hole bore ratio and the thermohydraulic performance measure, with a maximum divergence of 10%.

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对集成了弧形粗糙度的逆流冲击空气太阳能加热器的热流性能进行实验评估

本研究的目的是进行一项实验，评估在太阳能加热器的吸收板上结合逆流空气阻挡布置和弧形涡轮的效果。这种组合旨在改善太阳能空气加热器的热液压性能。在流量雷诺数从 18,000 到 3600 不等的条件下，研究了能量传递和摩擦因数等参数，并考虑了孔喷射孔径比从 0.0430 到 0.109 的影响。在 0.0650 的最佳喷孔孔径比下，热液成就参数值为 1.75，这是可能达到的最大值。与基于 THAP 的多通道 V 型和多通道 V 型粗化太阳能空气加热器相比，本研究成果的性能分别提高了 55.3% 和 32.9%。这些比较清楚地表明了当前工作的优越性。此外，喷射孔径比与热液压性能指标之间存在一定关系，最大偏差为 10%。

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来源期刊

Heat and Mass Transfer 工程技术-力学

CiteScore

4.80

自引率

4.50%

发文量

148

审稿时长

8.0 months

期刊介绍： This journal serves the circulation of new developments in the field of basic research of heat and mass transfer phenomena, as well as related material properties and their measurements. Thereby applications to engineering problems are promoted. The journal is the traditional "Wärme- und Stoffübertragung" which was changed to "Heat and Mass Transfer" back in 1995.