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

1. INTRODUCTION
1.7 Problem statement
In order to determine if the SOFC-ABS combination is at all economically
feasible, some rough economical calculations will be made for each of the
three of TOFCs intended market segments, APU, DG and µCHP.
The next step will be to develop a thermodynamic model to simulate
the interaction of the essential components of a SOFC-ABS system such
as SOFC stack, absorption chiller unit, heat exchangers etc. The behavior
of these components must be simulated and then efficiencies (electrical,
cooling, heating and overall) will be determined and compared for
different system configurations.
The model should be so general that it is capable of simulating a
range of different applications with different temperatures and powers,
flows, ambient conditions etc. The purpose of the model should be to
make an estimation of whether the combination of SOFC-ABS is a good
thermodynamical match, and to investigate if and how the electrical and
thermal output of the system can be increased.
An example of an application will be simulated in order to demonstrate
the capabilities of the model.
The following questions will be answered in this report.
• For which market segments is there a good match between SOFC
and absorption cooling
• Which of the system components are especially critical for obtaining
a good performance
• Which system configuration gives the best CCHP performance
• How does climate influence the performance of the CCHP system
• How does the relation between generated electricity, cooling, and
heating match the demand, and can this be improved
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