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Improving Thermo-hydraulic Performance of Parallel-plate Flow with a Particular Counter-current Flow Division | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 5، دوره 4، شماره 4، اسفند 2020، صفحه 481-492 اصل مقاله (1.63 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2019.15507.5776 | ||
| نویسندگان | ||
| Mohsen Goodarzi* ؛ Nima Eshghabadi؛ Rahimeh Sadeghi | ||
| Faculty of Engineering, Bu_Ali Sina University, Hamedan, Iran | ||
| چکیده | ||
| A particular counter-current flow division has been introduced to improve the thermal and hydraulic performances of flow through two isotherm parallel plates. It has been constructed by inserting two zero thickness and impermeable flat plates within the parallel-plate channel to establish a central and two external sub-channels. The total flow rate has been subdivided into two streams for supplying into the central and two external sub-channels in counter-current directions. The effect of the cross-section ratio on the thermal and hydraulic performances has been investigated for two flow division regimes. The obtained results showed that better thermal performance could be enhanced when the cross-section of the central sub-channel was greater than the external ones. Regarding the overall performance, it has been concluded that the best performance could be enhanced when the flow and cross-section were equally subdivided. In this particular case, the percent of the heat transfer enhancement compared to the single-pass channel was 50%. Meanwhile, the power consumption increment of the proposed flow arrangement significantly decreased compared to the two previously proposed double-pass arrangements. It seems that the proposed flow arrangement is a better alternative for double-pass arrangement. | ||
| کلیدواژه‌ها | ||
| Parallel-plate flow؛ Heat transfer؛ Uniform wall temperature؛ Counter-current؛ Cross-section ratio | ||
| مراجع | ||
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[1] R.K. Shah, A.L. London, Laminar Flow Convection in Ducts, Academic Press, New York, 1995.
[2] P.A. Ramachandran, Boundary integral solution method for the Graetz problem, Numerical Heat Transfer, Part B, 23 (1993) 257-268.
[3] A. Laouadi, N. Galanis, C.T. Nguyen, Laminar fully developed mixed convection in inclined tubes uniform heated on their outer surface, Numerical Heat Transfer, Part A, 26 (1994) 719-738.
[4] M.L. Michelsen, J. Villadsen, The Graetz problem with axial heat conduction, International Journal of Heat and Mass Transfer, 17 (1974) 1391-1402.
[5] E. Papoutsakis, D. Ramkrishna, H.C. Lim, The extended Graetz problem with prescribed wall flux, AIChE Journal, 26 (1980) 779-787.
[6] S. Bilir, Numerical solution of Graetz problem with axial conduction, Numerical Heat Transfer, Part A, 21 (1992) 493-500.
[7] B. Weigand, An extract analytical solution for the extended turbulent Graetz problem with Dirichlet wall boundary conditions for pipe and channel flows, International Journal of Heat and Mass Transfer, 39 (1996) 1625-1637.
[8] C.H. Huang, M.N. Ozisik, Inverse problem of determining unknown wall heat flux in laminar flow through a parallel-plate duct, Numerical Heat Transfer, Part A, 21 (1992) 55-70.
[9] A.V. Kuznetsov, L. Chang, M. Xiong, Effects of thermal dispersion and turbulence in forced convection in a composite parallel-plate channel: investigation of constant wall heat flux and constant wall temperature cases, Numerical Heat Transfer, Part A, 42 (2002) 365-383.
[10] C.D. Ho, W.Z. Chen, J.W. Tu, Asymmetric wall heat fluxes boundary conditions in double-pass parallel-plate heat exchangers, International Journal of Heat and Mass Transfer, 52 (2009) 3555-3563.
[11] L.D. Tijing, B.C. Pak, A study on heat transfer enhancement using straight and twisted internal fin inserts, International Communications in Heat and Mass Transfer, 33 (6) (2006) 719-726.
[12] A. Sohankar, Heat transfer and fluid flow through a ribbed passage in staggered arrangement, Iranian Journal of Science and Technology, Transaction B: Engineering, 34 (B5) (2010) 471-485.
[13] G. Wang, S.P. Vanka, Convective heat transfer in periodic wavy passages, International Journal of Heat and Mass Transfer, 38 (17) (1995) 3219-3230.
[14] D.R. Sawyers, M. Sen, H.C. Chang, Heat transfer enhancement in three dimensional corrugated channel flow, International Journal of Heat and Mass Transfer, 41 (1998) 3559-3575.
[15] J. Zhang, J. Kunda, R.M. Manglik, Effect of fin waviness and spacing on the lateral vortex structure and laminar heat transfer in wavy-plate-fin cores, International Journal of Heat and Mass Transfer, 47 (2004) 1719-1730.
[16] H.M. Yeh, C.D. Ho, The improvement of performance in parallel-plate heat exchangers by inserting in parallel an impermeable sheet for double-pass operations, Chemical Engineering Communications, 83 (2000) 39-48.
[17] C.D. Ho, W.S. Sheu, Double-pass heat or mass transfer through a parallel-plate channel with recycle, International Journal of Heat and Mass Transfer, 43 (2000) 487-491.
[18] C.D. Ho, Y.J. Chuang, J.W. Tu, Double-pass flow heat transfer in a parallel-plate channel for improved device performance under uniform heat fluxes, International Journal of Heat and Mass Transfer, 50 (2007) 2208-2216.
[19] C.D. Ho, J.W. Tu, C.M. Yang, Conjugated heat transfer in double-pass laminar counter flow concentric tube heat exchangers with sinusoidal wall fluxes, International Journal of Heat and Mass Transfer, 52 (2009) 45-55.
[20] M. Goodarzi, S. Mazharmanesh, Heat transfer enhancement in parallel-plate double-pass heat exchanger using sinusoidal separating plate, International Journal of Thermal Sciences, 72 (2013) 115-124.
[21] C.D. Ho, H.M. Yeh, Y.C. Tasi, Improvement in performance of multi-pass laminar counter flow heat exchangers with external refluxes, International Journal of Heat and Mass Transfer, 45 (2002) 3529-3547.
[22] C.D. Ho, Y.C. Tasi, J.W. Tu, Heat transfer flow in a parallel-plate channel by inserting in parallel impermeable sheets for multi-pass coolers or heaters, International Journal of Heat and Mass Transfer, 47 (2004) 459-476.
[23] M. Goodarzi, E. Nouri, A new double-pass parallel-plate heat exchanger with better wall temperature uniformity under uniform heat flux, International Journal of Thermal Sciences, 102 (2016) 137-144.
[24] M. Goodarzi, S. Mazharmanesh, Analytical study on start-up process in parallel-plate channel under uniform heat flux, International Journal of Thermal Sciences, 94 (2015) 147-155.
[25] S. Patankar, Numerical Heat Transfer and Fluid Flow, Hemisphere Publishing Corporation, McGraw-Hill, New York, 1980.
[26] W.M. Kays, M.E. Crawford, Convection heat and mass transfer, 3rd ed., McGraw-Hill, New York, 1993.
[27] H.M. Yeh, C.D. Ho, The Improvement of Performance in Parallel-plate Heat Exchangers by Inserting DM Parallel an Impermeable Sheet for Double-pass Operations, Chemical Engineering Communications, 183 (2000) 39-48.
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