Page 78 - High Temperature Solid Oxide Fuel Cells Fundamentals, Design and Applications

Thermodynamics 5 5

specific technical work
molar concentration
efficiency
Celsius temperature
excess air value
fuel-related specific mass
fuel-related quantity
exergetic efficiency

Indices and abbreviations
0 stoichiometric value
A air
aB after burner outlet
AH air heater
AFC air at thermodynamic state of the fuel cell
An anode
Ca cathode
cc Carnot cycle
CHP combined heat and power generation
ECO economiser
EXCO external cooling
F fuel
FC fuel cell
FFC fuel at thermodynamic state of the fuel cell
FGC flue gas cooler
FH fuel heater
G flue gas
GT gas turbine
H2,HzO hydrogen, water
HEG reversible heat engine (flue gas)
HEX heat exchangers
HP high pressure
HPA heat pump (air)
HPF heat pump (fuel)
I inlet
i. j components
INEX intermediate expansion
irr irreversible
LP low pressure
0 outlet
oxygen
02
PH product heater
re€ reformer
rev reversible
RG reaction product gas
RH reheater