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CONVECTIVE COOLING AND THERMAL MANAGEMENT OPTIMIZATION OF PLANAR ANODE-SUPPORTED SOLID OXIDE FUEL CELLS

MAGAR, YOGESH NARESH
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1155839005

Abstract Details

2006, MS, University of Cincinnati, Engineering : Mechanical Engineering.
Convective heat and mass transfer in a planar, tri-layer, solid oxide fuel cell (SOFC) module is considered for a uniform supply of volatile species (80% hydrogen + 20% water vapor) and oxidant (20% oxygen + 80% nitrogen) to the electrolyte surface. With an Arrhenius electrochemical reaction rate, the coupled heat and mass transfer is modeled by steady incompressible fully-developed laminar flow in the interconnect ducts of rectangular cross section for both the anode-side fuel and cathode-side oxidant flows. The governing three-dimensional equations for mass, momentum, energy, and species transfer along with those for electrochemical kinetics are solved computationally using commercial CFD software. The homogeneous porous-layer flows, which are in thermal equilibrium with the solid matrix, are coupled with the electrochemical reaction rate to properly account for the flow-duct and anode/cathode interface heat/mass transfer. Parametric effects of rectangular flow duct aspect ratio and anode porous-layer thickness on the variations in species mass concentration and temperature distributions, flow friction factor, and convective heat transfer coefficient are presented. The combined effects of porous layer and electrochemical reaction are seen to alter the flow and heat transfer behavior of SOFC. The hydrodynamic and thermal behavior is characterized for effective performance and cooling, and interconnect channels of rectangular cross-section aspect ratio of ~ 2 are seen to provide optimal thermal management benefits. Parametric effects of flow duct cross-sectional shapes (triangle, trapezoid and, rectangle) and geometry along with heat transfer enhancing flow arrangements (offset-strip fin and wavy fin flows) are characterized by the variations in mass and temperature distributions, flow friction factor, and convective heat transfer coefficient. Though triangular cross section al interconnects showed lowest heat transfer coefficient it might be preferred de to its highest structural stability. Offset-strip flow arrangement has shown the best convective cooling and is probably the best interconnect design for the efficient thermal management in planar anode-supported SOFC.
Dr. Raj Manglik (Advisor)
108 p.
Engineering, Mechanical
Solid oxide fuel cells; Thermal analysis; Fluid flow; CFD; Compact Heat Exchangers; Electrochemistry

Recommended Citations

Citations

  • MAGAR, Y. N. (2006). CONVECTIVE COOLING AND THERMAL MANAGEMENT OPTIMIZATION OF PLANAR ANODE-SUPPORTED SOLID OXIDE FUEL CELLS [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1155839005

    APA Style (7th edition)

  • MAGAR, YOGESH. CONVECTIVE COOLING AND THERMAL MANAGEMENT OPTIMIZATION OF PLANAR ANODE-SUPPORTED SOLID OXIDE FUEL CELLS. 2006. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1155839005.

    MLA Style (8th edition)

  • MAGAR, YOGESH. "CONVECTIVE COOLING AND THERMAL MANAGEMENT OPTIMIZATION OF PLANAR ANODE-SUPPORTED SOLID OXIDE FUEL CELLS." Master's thesis, University of Cincinnati, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1155839005

    Chicago Manual of Style (17th edition)

ucin1155839005
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© 2006, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.
Release 3.2.12