Apex-up discrete-arc rib roughened solar air heater- energy and exergy based experimental study

Bhuvad, Sushant Suresh; Rizvi, Ikhtedar Husain; Azad, Rajnish

doi:10.1016/j.solener.2023.04.007

Solar Energy

2023

DOI: 10.1016/j.solener.2023.04.007

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Apex-up discrete-arc rib roughened solar air heater- energy and exergy based experimental study

Sushant Suresh Bhuvad

Ikhtedar Husain Rizvi

Rajnish Azad

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Cited by 8 publications

References 50 publications

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Effect of duct length variation on solar air heater performance for smooth and D‐shaped roughened absorber plate

Dutt,

Hedau,

Kumar

et al. 2024

Heat Trans

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The study aims to examine how duct length affects the performance of a solar air heater (SAH) with a D‐shaped ribbed absorber plate, compared to a smooth absorber plate. The optimized D‐shaped ribs from previous research investigations are utilized in the present work to explore the absorber plate's length influence on the Nusselt number. The study reveals a slight decrease in the Nusselt number as the length of the absorber plate with D‐shaped ribs is increased. The observed behavior is attributed to the diminishing capacity of air to extract heat from the heated surface within the elongated duct. Moreover, the study calculates the pressure drop and thermo–hydraulic performance parameter (THPP) associated with the D‐shaped ribs and formulates correlations to establish a quantitative understanding of the relationship between duct length and D‐shaped rib performance. The maximum value of THPP was found to be 1.17 within the considered range of duct height. Furthermore, correlations have been derived for the Nusselt number and friction factor in terms of duct length to hydraulic diameter ratio and Reynolds number with maximum deviations of +1.7 and +2.13, respectively. These correlations serve as valuable tool for engineers and researchers seeking to optimize the design of SAHs, enabling them to balance the benefits of D‐shaped ribs with the considerations of duct length. This research contributes to the growing body of knowledge of SAH design, offering insights into the trade‐offs and intricacies of utilizing D‐shaped ribs and adjusting duct length for improved THPP.

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Effect of duct length variation on solar air heater performance for smooth and D‐shaped roughened absorber plate

Dutt,

Hedau,

Kumar

et al. 2024

Heat Trans

View full text Add to dashboard Cite

show abstract

Energy and enviro-economic analysis of a solar air heater with wedge turbulators

Balakrishnan,

Vengadesan,

Bhowal

et al. 2023

Environ Sci Pollut Res

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Energy and exergy analysis of solar air heater utilizing noble half conical ribs of various designs: an experimental study

Shankar,

Kumar,

Pandey

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Apex-up discrete-arc rib roughened solar air heater- energy and exergy based experimental study

Cited by 8 publications

References 50 publications

Effect of duct length variation on solar air heater performance for smooth and D‐shaped roughened absorber plate

Effect of duct length variation on solar air heater performance for smooth and D‐shaped roughened absorber plate

Energy and enviro-economic analysis of a solar air heater with wedge turbulators

Energy and exergy analysis of solar air heater utilizing noble half conical ribs of various designs: an experimental study

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