抄録
To complete a new feasible concept design for a highly efficient and high power density SOFC, fluid and structure coupled analysis was introduced. The analysis required SOFC design items of not only shape properties and material properties, but also SOFC operating conditions that satisfy a target performance level based on system. Firstly the performance-satisfied operating conditions were resulted to be solved. Secondly to verify reliability on SOFC, which was considered a critical material in SOFC components, structure analysis had to be carried out by using temperature distributions based on fluid analysis. To find out a solution, Fluid and Structure Coupled Analysis were reiterated by replacing the design items under the allowable operating conditions. This method was applied to our new bifacial flat tubular cell structure that was a target performance level of 60% (HHV, DC) in efficiency and 2W/cm^3 in volumetric power density. The method could be showed useful in order to decide SOFC design items connecting with the performance and the reliability.
