Publicado 8 números por año
ISSN Imprimir: 1065-5131
ISSN En Línea: 1563-5074
Indexed in
A REVIEW OF THE THERMAL AND HYDRODYNAMIC PERFORMANCE OF SOLAR AIR HEATER WITH ROUGHENED ABSORBER PLATES
SINOPSIS
Employing artificial roughness on the air flow side of an absorber plate in a solar air heater duct is an effective technique used to increase the heat transfer coefficient, which results in enhancement of the thermal performance of the solar air heater. Various experimental investigations have been carried out on an absorber plate by employing various roughness elements with different geometries to investigate the heat transfer augmentation and to study the effects of the roughness geometry on the performance of a solar air heater. In this paper an attempt has been made to review experimental investigations on the thermal and thermo-hydraulic performance of 35 different roughness element geometries provided for the absorber plate of solar air heater ducts with the objective of finding the relative performance of such types of artificially roughened solar air heaters. Correlations in terms of the heat transfer and friction factor have been presented that relate the various geometrical parameters of the roughened solar air heaters, as developed by different investigators. All of the roughness geometries are mainly categorized into wire rib, machined rib, and dimple/protrusion surface roughness, which are given in different tables. The results cited in this paper may help researchers in further investigations in this area. A comparison of the performance enhancement factor for different roughness geometries has been done based on the thermo-hydraulic performance criterion (THPC), which takes into consideration Reynolds numbers in the range of 2000–20,000. The solar air heater with multi V-rib roughness with a gap has been found to have the highest value of THPC (equal to 3.5), which exhibited the best thermo-hydraulic performance among all of the roughness geometries.
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Sahu Mukesh Kumar, Matheswaran M. M., Bishnoi Pardeep, Experimental study of thermal performance and pressure drop on a solar air heater with different orientations of arc-shape rib roughness, Journal of Thermal Analysis and Calorimetry, 144, 4, 2021. Crossref
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Sahu Mukesh Kumar, Priyam Abhishek, Mishra Shivam, Bishnoi Pardeep, A detailed review on research, technology, configurations and application of wire ribs as artificial roughness in rectangular solar air heater duct, Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 235, 4, 2021. Crossref
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Sahu Mukesh Kumar, Kharub Manjeet, Matheswaran Mahalingam Murugesan, Nusselt number and friction factor correlation development for arc-shape apex upstream artificial roughness in solar air heater, Environmental Science and Pollution Research, 29, 43, 2022. Crossref
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