Uma Sai Mahesh, Kesavarapu and Janardhanan, V
(2018)
Exergy analysis of solid oxide fuel cell operating
on natural gas.
Masters thesis, Indian Institute of Technology Hyderabad.
Abstract
The fuel cell performance can be determined by various methods described in literature like
impedence studies, cycle voltametry e�ciency and exergy analysis etc,. In this work exergy analysis
is implemented to study the performance of two types of fuel cells namely HT - PEMFC and SOFC.
Exergy analysis can be used to determine not only the quantity of energy utilized but also the quality
of the energy. Now a days exergy analysis is extensively used to determine the magnitude of energy
loss and its location. In this work, exergy analysis is done on HT - PEMFC to identify the locations
or equipments where loss of energy could be take place. This can be used to improve the overall
performance of the system. In additional to the exergy analysis of HT-PEMFC, the performance of
SOFC is also examined by exergy analysis. Assuming that all channels in a stack behave similarly,
a single channel is simulated at different temperatures at different cell voltages and variable fuel
composition. Also, SOFC is run at constant
ow rate condition to validate the exergy analysis.
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