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This work presents the results of an experimental study of thermo-hydraulic performance of rectangular channel having discrete V-pattern baffle attached on the broad wall. Measurements have been carried out for the aspect channel ratio of 10, Reynolds number from 3000 to 21000, relative baffle height value of 0.50, relative baffle pitch value of 1.5, relative gap width value of 1.0, flow attack angle value of 60ο, relative discrete distance values of 0.26 to 0.83. The heat transfer and friction factor ata obtained were compared with the data obtained from a smooth wall channel under similar operating conditions. In comparison to the smooth wall channel the discrete V- pattern baffle channel enhanced the Nusselt number and friction factor by 3.89 and 6.08 times, respectively. The overall thermal performance parameter is found superior for the relative discrete distance of 0.67. Discrete V-pattern baffle roughness shape has also been shown to be overall thermal performance higher in comparison to other continuous (without discrete) V-pattern baffle shape rectangular channel.

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KUMAR, Anil et al. EXPERIMENTAL INVESTIGATION ON OVERALL THERMAL PERFORMANCE OF FLUID FLOW IN A RECTANGULAR CHANNEL WITH DISCRETE V-PATTERN BAFFLE. Thermal Science, [S.l.], mar. 2017. ISSN 2334-7163. Available at: <http://thermal-science.tech/journal/index.php/thsci/article/view/2240>. Date accessed: 24 june 2017. doi: https://doi.org/10.2298/TSCI151206125K.
Received 2017-03-06
Accepted 2017-03-13
Published 2017-03-13


[1] Kumar, A., Kim, M.H., Thermo-hydraulic Performance of Rectangular Ducts with Different Multiple V-Rib Roughness Shapes: A Comprehensive Review and Comparative Study, Renewable and Sustainable Energy Reviews, 54 (2016), pp.635-652.
[2] Kumar, R., et al., Experimental investigation of effect of flow attack angle on thermohydraulic performance of air flow in a rectangular channel with discrete V-pattern baffle on the heated plate, Advances in Mechanical Engineering, 8 (2016), pp.1-12.
[3] Kumar, A., Kim, MH., Convective Heat Transfer Enhancement in Solar Air Channels, Applied Thermal Engineering, 89 (2015),pp. 239-261.
[4] Sethi, M., et al., Correlations For Solar Air Heater Duct with Dimpled Shape Roughness Elements on Absorber Plate, Solar Energy, 86 (2012), pp. 2852-2861.
[5] Kumar, A., et al., Experimental Investigation on Heat Transfer and Fluid Flow Characteristics of Air Flow in a Rectangular Duct with Multi V-Shaped Rib with Gap Roughness on the Heated Plate, Solar Energy, 86 (2012), 1733-1749.
[6] Yeh, H.M., Chou, W., Efficiency of Solar Air Heaters with Baffles, Energy, 16 (1991), pp. 983–987.
[7] Park, J.S., et al., Heat Transfer Performance Comparisons of Five Different Rectangular Channels with Parallel Angled Ribs, International Journal of Heat and Mass Transfer, 35 (1992), pp. 2891–2903.
[8] Liu, J., et al., Heat Transfer Characteristics in Steam-Cooled Rectangular Channels with Two Opposite Rib-Roughened Walls, Applied Thermal Engineering, 50 (2013), pp.104–111.
[9] Maurer, M., et al., An Experimental and Numerical Study of Heat Transfer and Pressure Losses of V and W Shaped Ribs at High Reynolds Number, Proceeding ASME Turbo Expo, 4 (2007), pp. 219–228.
[10] Sriromreun, P., et al., Experimental and Numerical Study on Heat Transfer Enhancement in a Channel with Z-Shaped Baffles, International Communication of Heat and Mass Transfer, 39 (2012), pp. 945–952.
[11] Mousavi, S.S., Hooman, K., Heat and Fluid Flow in Entrance Region of a Channel with Staggered Baffles, Energy Conversion and Management, 47 (2006), pp. 2011–2019.
[12] Sara, O.N., Thermal Performance Analysis for Solid and Perforated Blocks on a Flat Surface in a Duct Flow, Energy Conversion and Management, 41 (2000), pp.1019–1028.
[13] Hwang, J.J., Liou, T.M., Heat Transfer in a Rectangular Channel with Perforated Turbulence Promoters using Holographic Interferometry Measurement, International Journal of Heat and Mass Transfer, 38 (1995), pp. 3197–3207.
[14] Chamoli, S., Thakur, N.S., Correlations For Solar Air Heater Duct with V-Shaped Perforated Baffles as Roughness Elements on Absorber Plate. International Journal of Sustainable Energy, 85 (2013), pp. 73- 81
[15] Alam, T., et al., Experimental Investigation of Thermo Hydraulic Performance of a Rectangular Solar Air Heater Duct Equipped with V-Shaped Perforated Blocks, Advanced in Mechanical Engineering, 94 (2014) pp. 83-13.
[16] ASHRAE Standard 93, Method of Testing to Determine the Thermal Performance of Solar Collectors. Atlanta, GA: American Society of Heating, Refrigeration and Air Conditioning Engineers, 2003.