Performance Simulation of Combined Cycle with Kalina Bottoming Cycle
DOI:
https://doi.org/10.13052/dgaej2156-3306.2311Keywords:
Keywords: ammonia-water vapor mixture, combined cycle, Kalina cycle, properties, thermodynamic analysis.Abstract
The Kalina cycle has potential for improved performance re-
garding electrical ef ficiency, specific power output and cost of electricity
compared with conventional technology because the mixture of working
fluids enables ef ficient energy recovery. Thermodynamic analysis has
been carried out for combined cycle with the Kalina bottoming cycle.
In this work, the identi fied key parameters for the Kalina cycle are tur-
bine inlet condition (pressure, temperature and concentration), separator
temperature and ambient temperature. The effect of these parameters on
exergy ef ficiency of combined cycle is examined. The combined cycle
efficiency increases with the increase in the turbine inlet pressure, and
the same decreases with increases in ambient temperature, turbine inlet
temperature and its concentration. Heat recovery from exhaust decreases
with increases in the separator temperature, and it does not alter the
output of the combined cycle. The ef ficiency of the cycle is very sensi-
tive to the turbine inlet concentration and ambient temperature.
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