Transient modeling and analysing of advanced Pressurized Fluidized Bed Combustion (PFBC) systems is a research area that is currently under investigation by the United States Department of Energy's Federal Energy Technology Center (FETC). The object of the effort is to identify key operating parameters that affect plant performance and then quantify the basic response of major sub-systems to changes in operating conditions. PC-TRAX~(TM), a commercially available dynamic software program, was chosen and applied in this modeling and analysis effort. PC-TRAX's software system includes a library of modular components that describe the dynamic behavior of standard power plant equipment such as pumps, compressors, and gas/steam turbines. These modules are linked together, such that thermodynamic and hydrodynamic information flows between the individual modules to emulate the overall plant configuration. Customized dynamic models have been developed using Advanced Continuous Simulation Language (ACSL) for non-standard components such as carbonizers, fluidized-bed heat exchangers (FBHE), fluidized-bed combustors, solids coolers, and other near-term components found in PFBC power plant systems. These customized ACSL-based modules have been interfaced with the standard TRAX code and used for on-line transient analysis of complete power plant configurations.
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