Effect of angle of attack on heat transfer and friction characteristics of inclined rib roughened solar air heater duct

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dc.contributor.advisorHans, V.S.
dc.contributor.authorGurpreet Singh
dc.date.accessioned2017-11-28T04:43:38Z
dc.date.available2017-11-28T04:43:38Z
dc.date.issued2017
dc.description.abstractThermal performance of solar air heaters is very low due to formation of laminar sublayer over the heat transferring surface. By use of artificial roughness in the form of wires, thermal performance of solar air heaters can be increased considerably. This study represents an experimental investigation carried out to examine the effect of angle of attack on heat transfer and friction characteristics of inclined rib roughened solar air heater duct. The various parameters related to roughness geometry and flow were Reynolds number in the range of 2000 to 16000, relative roughness height (e/D) in the range of 0.02 to 0.043, relative roughness pitch (P/e) in the range to 6 to 14 and angle of attack (α) in the range of 45o to 75o: The results obtained from this experimental investigation suggested that ribs inclined at 67o, having relative roughness pitch and relative roughness height value of 10 and 0.043 respectively outperformed the other rib configuration in terms of thermal and thermo-hydraulic performance. Correlations for Nusselt number and friction factor in terms of roughness geometry parameters and flow parameters have also been developed from experimental data.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810036544
dc.keywordsSolar air heater, Artificial roughness, Rib roughness, Angle of attack, Thermo-hydraulic performance, Nusselt number, Friction factoren_US
dc.language.isoenen_US
dc.pages64en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemEffect of angle of attack on heat transfer and friction characteristics of inclined rib roughened solar air heater ducten_US
dc.subAgricultural Engineeringen_US
dc.subjectnullen_US
dc.themerib roughened solar air heater ducten_US
dc.these.typeM.Tech.en_US
dc.titleEffect of angle of attack on heat transfer and friction characteristics of inclined rib roughened solar air heater ducten_US
dc.typeThesisen_US
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