پديد آورنده :
پروانيان، امير مسعود
عنوان :
توسعه مواد متخلخل فلزي جهت كاربرد در پيل سوختي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
استخراج فلزات
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
شانزده127ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
مسعود پنجه پور، غلامرضا آريانپور
استاد مشاور :
محمود مرآتيان، محمود اشرفي زاده
توصيفگر ها :
بهينه سازي , صفحات دوقطبي , روش سينترينگ توام با حذف كربنات , روش شبيه سازي , شبكه بلتزمن
تاريخ نمايه سازي :
23/8/90
استاد داور :
محسن دوازده امامي، حسين سيدين
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Development of Porous Metallic Materials for Fuel Cell Applications Amir Masoud Parvanian a parvanian@ma iut ac ir Date of submission 7 31 2011 Department of Materials Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisors Masoud Panjepour panjepour@cc iut ac ir Gholamreza Aryanpour aryanmat@cc iut ac irAbstractDue to limited fossil fuel resources and environmental problems such as pollution using renewable energysources in recent years has increasingly spread The proton exchange membrane fuel cell PEMFC as arelatively cheap and clean energy source in transport applications is considered by many researchers APEMFC consists of different components Bipolar plates as one of the most important components ofPEMFC are mainly made of graphite corrugated plates Graphite bipolar plates are brittle in which usuallyabout 80 percent of the fuel cell total weight and 45 percent of the total cost is allocated to this component So it is inevitable to optimize the design and materials of this component to commercialize PEMFCs Inrecent years porous metallic materials known as metal foams have been suggested as a suitable alternativefor bipolar plates Accordingly the main objectives of this study are 1 development of porous metal designusing numerical simulation and 2 the selection of synthesis process and characterization of porous metallicmaterials to replace conventional PEMFC bipolar plates In fact the effects of porosity and pore size wereconsidered on the permeability as the most important factor in flow conductivity of porous media The resultsof lattice Boltzmann numerical simulation of fluid flow in 3D reconstructed porous media respectivelyindicate the permeability of porous media as an exponential relation of porosity percent and a power relationof pore size Numerical simulations could also predict the variation of pressure gradient vs superficialvelocity of fluid flow in porous media In another step by choosing the lost carbonate sintering LCS processand optimization of some process parameters porous copper material has been synthesized Results of phaseand micro structural analysis show that LCS has such a high capability to produce porous metallic materialswith desired pore size and porosity percent In addition the mechanical properties of produced foams werestudied Results show an increase of flexural strength with relative density increasing and pore sizedecreasing Permeability measurement analysis also confirm the flexibility of LCS to produce metallic foamswith appropriate permeability below the 10 8 m2 for application in PEMFCs Accordingly the foam with aporosity of 60 and pore size of 400 micron equal to 65 ppi as a replacement for the conventional bipolarplates was selected Keywords Optimization Proton exchange membrane fuel cell Bipolar plates Metallic foam Lostcarbonate sintering Lattice Boltzmann simulation method
استاد راهنما :
مسعود پنجه پور، غلامرضا آريانپور
استاد مشاور :
محمود مرآتيان، محمود اشرفي زاده
استاد داور :
محسن دوازده امامي، حسين سيدين
