CFD simulation and optimization of ICEs exhaust heat recovery using different coolants and fin dimensions in heat exchanger

In this paper, finned type heat exchangers with different fin dimensions in the exhaust of a gasoline engine are modeled numerically for improving the exhaust energy recovery. RNG k-ε viscous model is used and the results are compared with available experimental data presented by Lee and Bae (Int J Therm Sci 47:468–478, 2008) where a good agreement is observed. Also, the effect of fin numbers, fin length and three water-based nanofluid coolants (TiO2, Fe2O3 and CuO) on the heat recovery efficiency are investigated in different engine loads. As a main outcome, results show that increasing the fin numbers and using TiO2-water as cold fluid are the most effective methods for heat recover. Furthermore, an optimization analysis is performed to find the best fins dimensions using response surface methodology.

[1]  Chun-Lu Zhang,et al.  Evaluation of elliptical finned-tube heat exchanger performance using CFD and response surface methodology , 2014 .

[2]  Chia-Jung Hsu.  Numerical Heat Transfer and Fluid Flow , 1981 .

[3]  M. Hatami,et al.  Effect of speed and load on exergy recovery in a water-cooled two stroke gasoline-ethanol engine for the bsfc reduction purposes , 2013 .

[4]  Mohsen Ghazikhani,et al.  Exergy recovery from the exhaust cooling in a DI diesel engine for BSFC reduction purposes , 2014 .

[5]  Mohsen Ghazikhani,et al.  The Effect of Alcoholic Fuel Additives on Exergy Parameters and Emissions in a Two Stroke Gasoline Engine , 2014 .

[6]  Davood Domiri Ganji,et al.  Numerical study of finned type heat exchangers for ICEs exhaust waste heat recovery , 2014 .

[7]  Davood Domiri Ganji,et al.  Thermal performance of circular convective–radiative porous fins with different section shapes and materials , 2013 .

[8]  Davood Domiri Ganji,et al.  A review of different heat exchangers designs for increasing the diesel exhaust waste heat recovery , 2014 .

[9]  Suhil Kiwan,et al.  Effect of radiative losses on the heat transfer from porous fins , 2007 .

[10]  Davood Domiri Ganji,et al.  Heat transfer study through porous fins (Si3N4 and AL) with temperature-dependent heat generation , 2013 .

[11]  S. M. Peyghambarzadeh,et al.  Improving the cooling performance of automobile radiator with Al2O3/water nanofluid , 2011 .

[12]  G. Domairry,et al.  Squeezing Cu–water nanofluid flow analysis between parallel plates by DTM-Padé Method , 2014 .

[13]  Choongsik Bae,et al.  Design of a Heat Exchanger to Reduce the Exhaust Temperature in a Spark-Ignition Engine , 2008 .

[14]  Saiful Bari,et al.  Waste heat recovery from a diesel engine using shell and tube heat exchanger , 2013 .

[15]  R. Velraj,et al.  Experimental investigation on heat recovery from diesel engine exhaust using finned shell and tube heat exchanger and thermal storage system , 2011 .

[16]  M. Farhadi,et al.  Heat transfer and flow characteristics of AL2O3–water nanofluid in a double tube heat exchanger , 2013 .

[17]  Chuen-Sen Lin,et al.  Numerical study of an exhaust heat recovery system using corrugated tube heat exchanger with twisted tape inserts , 2014 .

[18]  D. Ganji,et al.  Forced convection analysis for MHD Al2O3–water nanofluid flow over a horizontal plate , 2013 .

[19]  Don W. Green,et al.  Perry's Chemical Engineers' Handbook , 2007 .

[20]  Davood Domiri Ganji,et al.  Heat transfer and nanofluid flow in suction and blowing process between parallel disks in presence of variable magnetic field , 2014 .

[21]  Davood Domiri Ganji,et al.  A comprehensive analysis of the flow and heat transfer for a nanofluid over an unsteady stretching flat plate , 2014 .

[22]  Davood Domiri Ganji,et al.  Thermal and flow analysis of microchannel heat sink (MCHS) cooled by Cu–water nanofluid using porous media approach and least square method , 2014 .

[23]  Saiful Bari,et al.  Waste heat recovery from the exhaust of a diesel generator using Rankine Cycle , 2013 .

[24]  Rahman Saidur,et al.  Performance investigation of an automotive car radiator operated with nanofluid-based coolants (nanofluid as a coolant in a radiator) , 2010 .

[25]  Hong Guang Zhang,et al.  Heat transfer analysis of a finned-tube evaporator for engine exhaust heat recovery , 2013 .

[26]  John Howard Perry,et al.  Chemical Engineers' Handbook , 1934 .

[27]  Nasrudin Abd Rahim,et al.  Energy savings and emissions reductions for rewinding and replacement of industrial motor , 2011 .

[28]  Harun Bilirgen,et al.  Numerical modeling of finned heat exchangers , 2013 .

[29]  Saad Mekhilef,et al.  Energy and emission analysis for industrial motors in Malaysia , 2009 .

[30]  R. Reid,et al.  The Properties of Gases and Liquids , 1977 .

[31]  Davood Domiri Ganji,et al.  Heat transfer and flow analysis for SA-TiO2 non-Newtonian nanofluid passing through the porous media between two coaxial cylinders , 2013 .

[32]  K. Kobe.  The properties of gases and liquids , 1959 .

[33]  Moh’d A. Al-Nimr,et al.  Using Porous Fins for Heat Transfer Enhancement , 2001 .

[34]  N. Aslan.  Application of response surface methodology and central composite rotatable design for modeling the influence of some operating variables of a Multi-Gravity Separator for coal cleaning , 2007 .