integration of solid oxide fuel cells and ... - Ea Energianalyse

C H A P T E R
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COMPONENT DESCRIPTION
3.1 Introduction
3.1.1 EES
The model of the SOFC system and the absorption cycle is carried
out in Engineering Equation Solver (EES) which is a program that
solves algebraic as well as differential equations. One advantages of
this program is that the equations can be stated randomly. Another
advantage is that EES provides fluid property functions for a lot of
different species.
Structure
It is attempted to build up the model by a structure of subroutines in
order to have an overview of the entire system and to reuse components
and functions as much as possible. Each component in the model
corresponds to a physical unit or a part of it. E.g. the evaporator and
the absorber are modeled as to separate components, but physically they
are integrated as one unit.
Most components are modeled as modules which are placed in
separate files. The equations in a module are called from the main system
file and solved simultaneously with equations in other modules, just like
the equation were put all together.
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