A review of different heat exchangers designs for increasing the diesel exhaust waste heat recovery

Hatami, M.; Ganji, D.D.; Gorji-Bandpy, M.

doi:10.1016/j.rser.2014.05.004

Cited by 164 publications

(54 citation statements)

References 75 publications

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“…Ahmadi et al [6] analyzed the unsteady flow and related heat transfer of a nanofluid over a horizontal flat plate by Differential Transform Method (DTM). Hatami et al [7] presented a review on waste heat recovery technique for the increase of heat transfer from the diesel engines exhaust. The numerical modeling is done by the same author [8].…”

Section: Introductionmentioning

confidence: 99%

A decomposition method for convective–radiative fin with heat generation

Roy

Mondal²,

Mallick

2015

Ain Shams Engineering Journal

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This work is aimed at studying the effect of environmental temperature such as radiation sink temperature, convection sink temperature and heat generation number on the temperature distribution and efficiency of a convective-radiative stationary fin. The Adomian Decomposition Method (ADM) being one of the efficient numerical methods for highly non linear equations, the local temperature field and efficiencies are obtained using ADM in which Newton-Rapson method is used to estimate the fin temperature for insulated boundary conditions. It is found that the present ADM results are good agreement with the results available in literature using Galerkin Method (GM) and Boundary Value problem Method (BVP). Ó 2014 Production and hosting by Elsevier B.V. on behalf of Ain Shams University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

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Section: Introductionmentioning

confidence: 99%

A decomposition method for convective–radiative fin with heat generation

Roy

Mondal²,

Mallick

2015

Ain Shams Engineering Journal

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“…Every simulation in an engine operating condition takes approximately 10 h to get converged solutions. Hatami et al [27,28] after a complete review on the different heat exchangers for exhaust recovery, optimized the finned-tube heat exchanger using CFD and central composite design (CCD) techniques [29].…”

Section: Geometry Mesh Generation and Boundary Conditionsmentioning

confidence: 99%

Investigations of fin geometry on heat exchanger performance by simulation and optimization methods for diesel exhaust application

Hatami

Ganji

Gorji-Bandpy

2015

Neural Comput & Applic

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In this paper, three cases of heat exchangers (HEXs) in the exhaust of a diesel engine are modeled numerically for improving the exergy recovery amount. Simple double pipes, longitudinal and circular finned-tube HEXs are modeled to study the fin effect in waste heat recovery amount. It is tried to compare the circular and longitudinal fin's effect (with the same surface area) on exergy recovery and pressure drop in the exhaust. As a main outcome, results show that circular fins cannot enhance exergy recovery due to trapping the gases between them and producing a high pressure drop compared to longitudinal fins. Also, L 16 Taguchi array is applied to find the most important parameters in longitudinal fins to find the optimum design for this heat exchanger. Finally, a multi-objective optimization by central composite design is applied to find the optimum dimensions of proposed HEX in different engine loads.

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“…One of the main challenges for turbochargers is a phenomenon known as turbo lag, a delay in boost pressure owing to gaseous and rotational inertia in the system. Turbo lag can be reduced significantly by using two stages turbochargers and/or variable geometry turbines (VGT) [2,3]. This study will focus on improving the VGT efficiency.…”

Section: Introductionmentioning

confidence: 99%

Experimental optimization of the vanes geometry for a variable geometry turbocharger (VGT) using a Design of Experiment (DoE) approach

Hatami

Cuijpers

Boot

2015

Energy Conversion and Management

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Citation for published version (APA):Cuijpers, M., Boot, M., & Hatami, M. (2015). Experimental optimization of the vanes geometry for a variable geometry turbocharger (VGT) using a Design of Experiment (DoE) Please check the document version of this publication:• A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement: a b s t r a c tIn this paper, central composite design (CCD) based on Design of Experiment (DoE) is applied to obtain an optimal design of the vane geometry for a variable geometry turbine (VGT). The design is tested at four different pressure ratios (1.25, 1.5, 1.75 and 2.0) on a Garrett GT1541V turbocharger. Seventeen different cases for the inlet guide vanes are proposed. All cases, each having a unique combination of vane height, thickness, length and angle, has been produced via 3D printing. The goal of this study is to ascertain how vane geometry impacts turbine efficiency, so as to arrive at the ideal configuration for this specific turbine for the investigated range of operating conditions. As a main outcome, the results demonstrate that the applied vane angle has the strongest impact on the turbine efficiency, with smaller angles yielding the most favorable results. After CCD analysis, an optimized design for the vanes geometry with 76.31% efficiency (averagely in all pressures) is proposed. As a final step, all cases are analyzed from a free space parameter (FSP) perspective, with the theoretically optimal design (e.g., FSP < 5) corresponding nicely to the best experimental results.

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A review of different heat exchangers designs for increasing the diesel exhaust waste heat recovery

Cited by 164 publications

References 75 publications

A decomposition method for convective–radiative fin with heat generation

A decomposition method for convective–radiative fin with heat generation

Investigations of fin geometry on heat exchanger performance by simulation and optimization methods for diesel exhaust application

Experimental optimization of the vanes geometry for a variable geometry turbocharger (VGT) using a Design of Experiment (DoE) approach

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