Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

Fadhala, karrar Gh.; Fayyadh, Ekhlas M.; Mohammed, Ali F.

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Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

Engineering and Technology Journal

Article 22, Volume 41, Issue 1, Winter 2023, Page 243-256 PDF (937 K)

Document Type: Research Paper

DOI: 10.30684/etj.2022.136238.1305

Authors

karrar Gh. Fadhala

¹; Ekhlas M. Fayyadh²; Ali F. Mohammed²

¹Mechanical Engineering Dept., University of Technology-Iraq, Alsina&rsquo;a street, 10066 Baghdad, Iraq

²Mechanical Engineering Dept., University of Technology-Iraq, Baghdad, Iraq

Abstract

Metal foam is a novel material recently utilized in baffles as an alternative to solid baffles for reducing flow resistance. However, copper foam baffles have been suggested in this research to overcome this issue. So, the experimental tests were carried out in a manufactured square channel (250 mm x 250 mm) and heated uniformly at the bottom wall of the test section.Its walls are mounted copper foam baffles at a fixed porosity of 95%.Baffles were fixed alternatively on the top and bottom of the walls in staggered mode between two successive baffles (center to center) and were kept constant at 250 mm. The experimental work was done for different grades of the pore density of copper foam (10, 15, and 20 pores per inch (PPI)) with a window cut ratio of 25% and a constant heat flux of 4.4 kW/m².Reynolds number was varied from 3.8x10⁴ to 5.4x10⁴. The data for conventional copper solid baffles were used to compare the effect of foam metal baffles.The obtained results manifested that relative to the solid-copper baffles, the copper foam baffles have a greatly lower friction factor, whereas the friction factor for the solid baffles and copper foam baffles (10, 15, and 20) PPI is about (460), and (20, 29, and 38) times, respectively above the smooth surface. Moreover, the results of previous work predicted the present experimental work very well.

Highlights

Experimental study of the copper foam baffle on heat transfer and friction factor.
Study the grade influence of pore density for copper foam baffles at fixed porosity on the flow and thermal behavior.
The copper foam baffles were compared with solid copper baffles.

Keywords

Porous Media; Heat transfer enhancement; Porous baffles; Metal foam baffles; Heat exchanger

References

[1] M.A. Habib, A.M. Mobarak, M.A. Sallak, E.A. Abdel Hadi, R.I. Affify, Experimental investigation of heat transfer and flow over baffles of different heights, J. Heat Transfer. 116 (1994) 363–368. https://doi.org/10.1115/1.2911408

[2] H. Li, V. Kottke, Effect of baffle spacing on pressure drop and local heat transfer in shell-and-tube heat exchangers for staggered tube arrangement, Int. J. Heat Mass Transf. 41 (1998) 1303–1311. https://doi.org/10.1016/S0017-9310(97)00201-9

[3] L.C. Demartini, H.A. Vielmo, S. V. Möller, Numeric and experimental analysis of the turbulent flow through a channel with baffle plates, J. Brazilian Soc. Mech. Sci. Eng. 26 (2004) 153–159. https://doi.org/10.1590/S1678-58782004000200006

[4] H. Benzenine, R. Saim, S. Abboudi, O. Imine, Numerical simulation of the dynamic turbulent flow field through a channel provided with baffles: comparative study between two models of baffles: transverse plane and trapezoidal, Rev. Des Energies Renouvelables. 13 (2010) 639–651.

[5] R. Saim, H. Benzenine, H.F. Öztop, K. Al‐Salem, Turbulent flow and heat transfer enhancement of forced convection over heated baffles in a channel, Int. J. Numer. Methods Heat Fluid Flow. 23 (2013) 613–633. https://doi.org/10.1108/09615531311323773

[6] H. Bayram, G. Sevilgen, Numerical investigation of the effect of variable baffle spacing on the thermal performance of a shell and tube heat exchanger, Energies. 10 (2017). https://doi.org/10.3390/en10081156

[7] E.M.. El-Said, A.H. Elsheikh, H.R. El-Tahan, Effect of curved segmental baffle on a shell and tube heat exchanger thermohydraulic performance: Numerical investigation, Int. J. Therm. Sci. 165 (2021) 106922. https://doi.org/10.1016/j.ijthermalsci.2021.106922.

[8] N.M. Jasim, E.M. Fayyadh, M. Razoki Hasan, Numerical Analysis to Study the Effect of Foam Thickness on The Thermal-Hydraulic Performance of The Metal Foam Heat Exchanger, in: 2023: pp. 357–373. https://doi.org/10.1007/978-981-19-1939-8_29

[9] J.J. Hwang, Turbulent heat transfer and fluid flow in a porous-baffled channel, J. Thermophys. Heat Transf. 11 (1997) 429–436. https://doi.org/10.2514/2.6258

[10] Y.T. Yang, C.Z. Hwang, Calculation of turbulent flow and heat transfer in a porous-baffled channel, Int. J. Heat Mass Transf. 46 (2003) 771–780. https://doi.org/10.1016/S0017-9310(02)00360-5

[11] K.H. Ko, N.K. Anand, Use of porous baffles to enhance heat transfer in a rectangular channel, Int. J. Heat Mass Transf. 46 (2003) 4191–4199. https://doi.org/10.1016/S0017-9310(03)00251-5

[12] R. Karwa, B.K. Maheshwari, N. Karwa, Experimental study of heat transfer enhancement in an asymmetrically heated rectangular duct with perforated baffles, Int. Commun. Heat Mass Transf. 32 (2005) 275–284. https://doi.org/10.1016/j.icheatmasstransfer.2004.10.002

[13] R. Karwa, B.K. Maheshwari, Heat transfer and friction in an asymmetrically heated rectangular duct with half and fully perforated baffles at different pitches, Int. Commun. Heat Mass Transf. 36 (2009) 264–268. https://doi.org/10.1016/j.icheatmasstransfer.2008.11.005

[14] S. Mahadevan, M. Ricklick, J.S. Kapat, Internal Cooling Using Porous Turbulators: Heat Transfer and Pressure Drop Measurements, J. Thermophys. Heat Transf. 27 (2013) 526–533. https://doi.org/10.2514/1.T3919

[15] A. Hamadouche, R. Nebbali, H. Benahmed, A. Kouidri, A. Bousri, Experimental investigation of convective heat transfer in an open-cell aluminum foams, Exp. Therm. Fluid Sci. 71 (2016) 86–94. https://doi.org/10.1016/j.expthermflusci.2015.10.009

[16] K. Bilen, S. Gok, A.B. Olcay, I. Solmus, Investigation of the effect of aluminum porous fins on heat transfer, Energy. 138 (2017) 1187–1198. https://doi.org/10.1016/j.energy.2017.08.015

[17] A. Hamadouche, A. Azzi, S. Abboudi, R. Nebbali, Enhancement of heat exchanger thermal hydraulic performance using aluminum foam, Exp. Therm. Fluid Sci. 92 (2018) 1–12. https://doi.org/10.1016/j.expthermflusci.2017.10.035

[18] F. Shikh Anuar, I. Ashtiani Abdi, M. Odabaee, K. Hooman, Experimental study of fluid flow behaviour and pressure drop in channels partially filled with metal foams, Exp. Therm. Fluid Sci. 99 (2018) 117–128. https://doi.org/10.1016/j.expthermflusci.2018.07.032

[19] T. Chen, G. Shu, H. Tian, T. Zhao, H. Zhang, Z. Zhang, Performance evaluation of metal-foam baffle exhaust heat exchanger for waste heat recovery, Appl. Energy. 266 (2020). https://doi.org/10.1016/j.apenergy.2020.114875

[20] M.H. Mohammadi, H.R. Abbasi, A. Yavarinasab, H. Pourrahmani, Thermal optimization of shell and tube heat exchanger using porous baffles, Appl. Therm. Eng. 170 (2020) 115005. https://doi.org/10.1016/j.applthermaleng.2020.115005

[21] N.M. Jasim, E.M. Fayyadh, M.R. Hasan, Numerical Study on the Effect of Geometrical Parameter on the Thermal-Hydraulic Performance of the Metal Foam Heat Exchanger, IOP Conf. Ser. Mater. Sci. Eng. 1094 (2021) 012112. https://doi.org/10.1088/1757-899x/1094/1/012112

[22] H.W. Coleman, W.G. Steele, Experimentation, Validation, and Uncertainty Analysis for Engineers, FOURTH, Wiley, New York, 2018. https://doi.org/10.1002/9781119417989

[23] H.Y.Jeong, K. Ha, Y.Kwon, W.P.Chang, & Y. Lee, A correlation for single phase turbulent mixing in square rod arrays under highly turbulent conditions , Nuclear Engineering and Technology, 38 (2006) 809-818.

[24] F.W. Dittus, L.M.K. Boelter, Heat Transfer to Water in Thin Rectangular Channels, J. Heat Transfer. 12 (1985) 3–22.

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