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A Hierarchical Procedure for Synthesis of a Base Case Solid Oxide Fuel Cell System in Aspen HYSYS

Mark Moore, Bonnie Herrell, Robert Counce and Jack Watson

Presented is a computer-aided process design and analysis procedure for use in creating Aspen HYSYS-based base-case design simulations for a Solid Oxide Fuel Cell. This procedure is based on the work of Douglas. This approach provides a step by step method to system design that permits preliminary assessments of the economic viability, which allows for expeditious creation of realistic and economic design simulations. Each step presents heuristics designed to aid in the specific design element addressed in that step. An example design of a Solid Oxide Fuel Cell from the Department of Energy's Fuel Cell Handbook is used to illustrate the design process. This example answers the questions presented by Douglas, and culminates in an energy balance and a capital cost table for the process. The example illustrated has an expected return on investment of 15% and serves as a guide for teaching the use of a hierarchical procedure for the synthesis of a modern chemical process.