Abstract
Abstract
An exergy analysis has been used for a combination of steam-injected gas turbine cogeneration system and forward-feed triple-effect evaporation process, with and without vapour recompression. The fuel utilization efficiency, power—heat ratio and second-law efficiency are examined for evaluation of the thermal system performance. It is shown that the interaction between the combustion irreversibility and the exhaust exergy losses is dominant in governing the system efficiency with various steam injection ratios and feedstock mass flowrates. The compressor and gas turbine losses are shown to have a relatively small influence.
Get full access to this article
View all access options for this article.
References
1.
Hellemans
J. G.
Gasparovic
N.
Gas turbines with heat exchanger and water injection in the compressed air . Combustion , December 1972 , 44 , 32 –40 .
2.
Larson
E. D.
Williams
R. H.
Steam injected gas turbines . Trans. ASME, J. Engng Gas Turbines Power , 1987 , 109 , 55 –63 .
3.
Tuzson
J.
Status of steam-injected gas turbines , Trans. ASME, J. Engng Gas Turbines Power , 1992 , 114 , 682 –686 .
4.
Rice
I. G.
Steam-injected gas turbine analysis: Steam rates . Trans. ASME, J. Engng Gas Turbines Power , 1995 , 117 , 347 –353 .
5.
Fraize
W. E.
Kinney
C.
Effects of steam injection on the performance of gas turbine power cycle . Trans. ASME, J. Engng Power , 1979 , 101 , 217 –226 .
6.
Sarabchi
K.
Parametric analysis of steam injected gas turbine cycle . ASME Cogen-Turbo , 1992 , 7 , 209 –214 .
7.
Casten
J. W.
Mechanical recompression evaporators . Chem. Engng Prog. , July 1978 , 74 , 61 –67 .
8.
Rozycki
J.
Energy conservation via recompression evaporation . Chem. Engng Prog. , May 1976 , 72 , 69 –72 .
9.
Becker
F. E.
Zakak
A. I.
Recover heat by mechanical vapor recompression . Hydrocarbon Processing , May 1985 , 64 , 77 –80 .
10.
Irvine
T. F.
Jr.
Liley
P. E.
Steam and Gas Tables with Computer Equations , 1984 (Academic Press , New York ).
11.
Cohen
H.
Rogers
G. F. C.
Saravanamuttoo
H. I. H.
Gas Turbine Theory , 1987 (Longman , London ).
12.
Szargut
J.
Morris
D. R.
Steward
F. R.
Exergy Analysis of Thermal, Chemical and Metallurgical Processes , 1988 (Hemisphere Publishing , New York ).
13.
Moran
M. J.
Availability Analysis , 1989 (ASME Press , New York ).