Evaluation of the performance analysis of an improved solar air heater with Winglet shaped ribs

The present article is focused to improve the thermal performance of solar air heater using Liquid crystal thermography (LCT) approach, an improved type solar air heater comprises of winglet type rib roughened surface. In the present case, an experimental analysis and its effects on heat transfer an...

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Bibliographic Details
Published inExperimental heat transfer Vol. 35; no. 3; pp. 239 - 257
Main Authors Kumar, Amit, Layek, Apurba
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 16.04.2022
Taylor & Francis Ltd
Subjects
Aerial thermography
Angle of attack
Heat transfer
Liquid crystals
Performance evaluation
Roughness
Solar air heater
thermal efficiency
winglet rib
Winglets
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Summary:The present article is focused to improve the thermal performance of solar air heater using Liquid crystal thermography (LCT) approach, an improved type solar air heater comprises of winglet type rib roughened surface. In the present case, an experimental analysis and its effects on heat transfer and collector efficiency are examined using non-dimensional roughness parameters taken as relative roughness pitch (P/e) ranges between 5-12, attack angle (α) values of 30 degree-75 degree and relative roughness width (W/w) ranges between 3-7.These experimental results when compared with the smooth channel was improved by 17 % to 46 % under the given conditions.
ISSN:0891-6152
1521-0480
DOI:10.1080/08916152.2020.1838670