Compressor inlet air cooling is an effective method for enhancing the performance of gas turbine plants. This paper presents a comparative analysis of different solutions for cooling the compressor inlet air for the LM6000 gas turbine in a cogeneration plant operated in base load. Absorption and evaporative cooling systems are considered and their performance and economic benefits compared for the dry low-NOx LM6000 version. Reference is made to two sites in Northern and Southern Italy, whose climatic data series for modeling the variations in ambient temperature during the single day were used to account for the effects of climate in the simulation. The results confirmed the advantages of inlet air cooling systems. In particular, evaporative cooling proved to be cost effective, though capable of supplying only moderate cooling, while absorption systems have a higher cost but are also more versatile and powerful in base-load operation. An integration of the two systems proved to be able to give both maximum performance enhancement and net economic benefit.

Issue Section:
Gas Turbines: Industrial and Cogeneration
Topics:
Cogeneration plants, Compressors, Cooling, Gas turbines, Absorption, Evaporative cooling, Stress, Climate, Cooling systems, Modeling, Simulation, Temperature
1.
ASHRAE, 1989, Fundamentals Handbook, Atlanta, GA.
2.
Casper, R. L., 1993, “Application of the LM6000 for Power Generation and Cogeneration,” ASME Paper No. 93-GT-278.
3.
De Lucia
M.
,
Bronconi
R.
, and
Carnevale
E.
,
1994
, “
Performance and Economic Enhancement of Cogeneration Gas Turbines Through Compressor Inlet Air Cooling
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
116
, pp.
360
–
365
.
4.
Ebeling, J., Halil, R., Bantam, D., Bakenhus, B., Schreiber, H., and Wendland, R., 1992, “Peaking Gas Turbine Capacity Enhancement Using Ice Storage for Compressor Inlet Air Cooling,” ASME Paper No. 92-GT-265.
5.
Ebeling, J., Balsbaugh, R., Blanchard, S., and Beaty, L., 1994, “Thermal Energy Storage and Inlet Air Cooling for Combined Cycle,” ASME Paper No. 94-GT-310.
6.
Hill, J. P., 1992, “Assessing the Economics of Industrial Gas Turbines Cogeneration Applications,” ASME Paper No. 92-GT-333.
7.
Kolp
D. A.
,
Flye
W. M.
, and
Guidotti
H. A.
,
1995
, “
Advantages of Air Conditioning and Supercharging an LM6000 Gas Turbine Inlet
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
117
, pp.
513
–
527
.
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