Journal of Applied and Computational Mechanics
Effect of Corrugated Baffles on the Flow and Thermal Fields in a Channel Heat Exchanger
Document Type : Research Paper
Author
Department of Technology, University Centre of Naama - Ahmed Salhi (Ctr Univ Naama), Po. Box 66, 45000, Algeria
Abstract
The performance of corrugated baffles inserted in a rectangular channel heat exchanger is investigated. The fluid flows and thermal distribution are determined via numerical simulations. The working fluid has a shear thinning behavior. The influence of the baffle design is explored, we interest to the “wavy” shape. The corrugation angle of baffle (α) is changed from 0° (i.e. a straight baffle) to 45°. Also, the height (h) of the corrugated baffle is changed and three cases are considered, namely: h/H = 0.4, 0.5 and 0.6, where “H” is the channel height. In comparison with the unbaffled channel, the overall performance factor has increased from 1.27 up to 1.53 when the corrugation angle is increased from 0° to 45°. Concerning the corrugation height, the predicted results allowed us to select the case h/H = 0.5 as the best configuration from the cases studied.
Keywords
Main Subjects
[1] K. Alem, D. Sahel, A. Nemdili, H. Ameur, CFD investigations of thermal and dynamic behaviors in a tubular heat exchanger with butterfly baffles, Frontiers Heat Mass Transfer 10 (2018) 27.
[2] K. Boukhadia, H. Ameur, D. Sahel, M. Bozit, Effect of the perforation design on the fluid flow and heat transfer characteristics of a plate fin heat exchanger, International Journal of Thermal Sciences 126 (2018) 172-180.
[3] M. Mellal, R. Benzeguir, D. Sahel, H. Ameur. Hydro-thermal shell-side performance evaluation of a shell and tube heat exchanger under different baffle arrangement and orientation, International Journal of Thermal Sciences 121 (2017) 138-149.
[4] D. Sahel, H. Ameur, R. Benzeguir, Y. Kamla. Enhancement of heat transfer in a rectangular channel with perforated baffles, Applied Thermal Engineering 101 (2016) 156-164.
[5] D. Sahel, H. Ameur, Y. Kamla. A numerical study of fluid flow and heat transfer over a fin and flat tube heat exchangers with complex vortex generators, European Physical Journal Applied Physics 78 (2017) 34805.
[6] G. Liang, M.D. Islam, N. Kharoua, R. Simmons, Numerical study of heat transfer and flow behavior in a circular tube fitted with varying arrays of winglet vortex generators, International Journal of Thermal Sciences 134 (2018) 54-65.
[7] Y. Lei, F. Zheng, C. Song, Y. Lyu, Improving the thermal hydraulic performance of a circular tube by using punched delta-winglet vortex generators, International Journal of Heat and Mass Transfer 111 (2017) 299-311.
[8] E. Jiaqiang, D. Han, Y. Deng, W. Zuo, C. Qian, G. Wu, Q. Peng, Z. Zhang, Performance enhancement of a baffle-cut heat exchanger of exhaust gas recirculation, Applied Thermal Engineering 134 (2018) 86-94.
[9] E. Jiaqiang, M. Yue, J. Chen, H. Zhu, Y. Deng, Y. Zhu, F. Zhang, M. Wen, B. Zhang, S. Kang, Effects of the different air cooling strategies on cooling performance of a lithium-ion battery module with baffle, Applied Thermal Engineering 144 (2018) 231-241.
[10] M.S. Lee, S.S. Jeong, S.W. Ahn, J.C. Han, Effects of angled ribs on turbulent heat transfer and friction factors in a rectangular divergent channel, International Journal of Thermal Sciences 84 (2014) 1-8.
[11] P. Promvonge, S. Sripattanapipat, S. Tamna, S. Kwankaomeng, C. Thianpong, Numerical investigation of laminar heat transfer in a square channel with 45° inclined baffles, International Communications in Heat and Mass Transfer 37 (2010) 170-177.
[12] Kumar, R.P. Saini, J.S. Saini, Effect of roughness width ratio in discrete multi v-shaped rib roughness on thermohydraulic performance of solar air heater, Heat and Mass Transfer 51 (2015) 209-220.
[13] Lanjewar, J.L. Bhagoria, R.M. Sarviya, Heat transfer and friction in solar air heater duct with W-shaped rib roughness on absorber plate, Energy 36 (2011) 4531-4541.
[14] P. Promvonge, W. Changcharoen, S. Kwankaomeng, C. Thianpong, Numerical heat transfer study of turbulent square-duct flow through inline V-shaped discrete ribs, International Communication Heat and Mass Transfer 38 (2011) 1392-1399.
[15] S.K. Saini, R.P. Saini, Development of correlations for Nusselt number and friction factor for solar air heater with roughened duct having arc-shaped wire as artificial roughness, Solar Energy 82 (2008) 1118-1130.
[16] Y.H. Huang, C.H. Chen, Y.H. Liu, Nonboiling heat transfer and friction of air/water mist flow in a square duct with orthogonal ribs, Journal of Thermal Science and Engineering Applications 9 (2017) 041014.
[17] S. Sripattanapipat, P. Promvonge, Numerical analysis of laminar heat transfer in a channel with diamond-shaped baffles, International Communication Heat and Mass Transfer 36 (2009) 32-38.
[18] Thianpong, T. Chompookham, S. Skullong, P. Promvonge, Thermal characterization of turbulent flow in a channel with isosceles triangular ribs, International Communication Heat and Mass Transfer 36 (2009) 712-717.
[19] P. Sriromreun, C. Thianpong, P. Promvonge, Experimental and numerical study on heat transfer enhancement in a channel with Z-shaped baffles, International Communication Heat and Mass Transfer 39 (2012) 945-952.
[20] P. Promvonge, C. Thianpong, Thermal performance assessment of turbulent channel flow over different shaped ribs, International Communication Heat and Mass Transfer 35 (2008) 1327-1334.
[21] S. Skullong, S. Kwankaomeng, C. Thianpong, P. Promvonge, Thermal performance of turbulent flow in a solar air heater channel with rib-groove turbulators, International Communication Heat and Mass Transfer 50 (2014) 34-43.
[22] L. Wang, B. Sunden, Experimental investigation of local heat transfer in a square duct with various-shaped ribs, Heat and Mass Transfer 43 (2007) 759-766.
[23] M.M. Sahu, J.L. Bhagoria, Augmentation of heat transfer coefficient by using 90° broken transverse ribs on absorber plate of solar air heater, Renewable Energy 30 (2005) 2057-2063.
[24] K.R. Aharwal, B.K. Gandhi, J.S. Saini, Experimental investigation on heat transfer enhancement due to a gap in an inclined continuous rib arrangement in a rectangular duct of solar air heater, Renewable Energy 33 (2008) 585-596.
[25] M.E. Taslim, T. Li, D.M. Kercher, Experimental heat transfer and friction in channels roughened with angled, V-shaped, and discrete ribs on two opposite walls, Journal of Turbomachinery 118 (1996) 20-28.
[26] S. Singh, B. Singh, V.S. Hans, R.S. Gill, CFD investigation on Nusselt number and friction factor of solar air heater duct roughened with non-uniform cross-section transverse rib, Energy 84 (2015) 509-517.
[27] P.R. Chandra, C.R. Alexander, J.C. Han, Heat transfer and friction behaviour in rectangular channels with varying number of ribbed walls, International Journal of Heat and Mass Transfer 46 (2003) 481-495.
[28] P. Promvonge, S. Skullong, S. Kwankaomeng, C. Thianpong, Heat transfer in square duct fitted diagonally with angle-finned tape—Part 1: experimental study, International Communication Heat and Mass Transfer 39 (2012a) 617-624.
[29] P. Promvonge, S. Skullong, S. Kwankaomeng, C. Thianpong, Heat transfer in square duct fitted diagonally with angle-finned tape-Part 2: numerical study, International Communication Heat and Mass Transfer 39 (2012b) 625-633.
[30] W. Yang, S. Xue, Y. He, W. Li, Experimental study on the heat transfer characteristics of high blockage ribs channel, Experimental Thermal and Fluid Science 83 (2017) 248-259.
[31] Z. Ke, C.L. Chen, K. Li, S. Wang, C.H. Chen, Vortex dynamics and heat transfer of longitudinal vortex generators in a rectangular channel, International Journal of Heat and Mass Transfer 132 (2019) 871-885.
[32] Y. Menni, A. Azzi, C. Zidani, Computational analysis of turbulent forced convection in a channel with staggered corrugated baffles, Communications in Science and Technology 16 (2016) 34-43.
[33] H. Benzenine, R. Saim, S. Abboudi, O. Imine, Numerical analysis of a turbulent flow in a channel provided with transversal waved baffles, Thermal Science 17 (2013) 801-812.
[34] R. Kumar, P. Chand, Performance enhancement of solar air heater using herringbone corrugated fins, Energy 127 (2017) 271-279.
[35] I. Azevedo, M. Lebouche, R. Devienne, Laminar cooling of pseudoplastic fluids flowing through cylindrical horizontal pipes, International Journal of Heat and Fluid Flow 16 (1995) 125–130.
[36] L.C. Demartini, H.A. Vielmo, S.V. Möller, Numeric and experimental analysis of the turbulent flow through a channel with baffle plates, Journal of the Brazilian Society of Mechanical Sciences and Engineering 26(2) (2004) 153-160.
[37] S. Skullong, C. Thianpong, P. Promvonge, Effects of rib size and arrangement on forced convective heat transfer in a solar air heater channel, Heat and Mass Transfer 51 (2015) 1475-1485.
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