Study on Performance Improvement and Economical Aspect of Gas Turbine Power Plant Using Evaporative Cooling System

Hilman Syaeful Alam, John Sasso, Imam Djunaedi


The study is intended to improve the performance of gas turbine engines in order to meet both electrical power demand and peak load in the power plant. In this paper, evaporative cooling system had been applied to improve the performance of gas turbine in Pesanggaran power plant in southern Bali Island, Indonesia. Moreover, the economic analysis was conducted to determine the capacity cost, operating cost and payback period due to the investment cost of the system. Based on the evaluation results, the power improvement for the three gas turbine units (GT1, GT2 and GT3) are 2.09%, 1.38%, and 1.28%, respectively. These results were not very significant when compared to the previous studies as well as on the aspects of SFC (Specific Fuel Consumption), heat rate and thermal efficiency. Based on the evaluation of the economic aspects, the reduction of production costs due to the application of evaporative cooling system was not economical, because it could not compensate the investment cost of the system and it resulted a very long payback period. These unsatisfactory results could be caused by the high relative humidity. Therefore, further studies are needed to investigate the other alternative technologies which are more suitable to the climate conditions in Indonesia.


performance improvement; economic analysis; evaporative cooling; gas turbine; power plant

Full Text:



Thamir K. Ibrahim et al., “Improvement of gas turbine performance based on inlet air cooling systems: A technical review,� International Journal of Physical Sciences, Vol. 6(4), 18 February, 2011, pp. 620-627. crossref

O. R. AL-Hamdan and A. A. Saker, “Studying the Role Played by Evaporative Cooler on the Performance of GE Gas Turbine Existed in Shuaiba North Electric Generator Power Plant, � Energy and Power Engineering, Vol. 5, 2013, pp. 391-400. crossref

A. P. Santos and C. R. Andrade, “Analysis of Gas Turbine Performance with Inlet Air Cooling Techniques Applied to Brazilian Sites,� J. Aerospace. Technol. Manag., Vol.4, No 3, Jul.-Sep., 2012, pp. 341-353. crossref

R. Hosseini et al., “Performance improvement of gas turbines of Fars (Iran) combined cycle power plant by intake air cooling using a media evaporative cooler,� Energy Conversion and Management, Vol. 48, 2007, pp. 1055–1064. crossref

S. O. Oyedepo and O. Kilanko, “Thermodynamic Analysis of a Gas Turbine Power Plant Modeled with an Evaporative Cooler,� International Journal of Thermodynamics, Vol. 17, No. 1, 2014, pp. 14-20. crossref

S. Agarwal et al., “Performance Improvement of a Regenerative Gas Turbine Cycle Through Integrated Inlet Air Evaporative Cooling and Steam Injection,� International Journal of Emerging Technology and Advanced Engineering, Vol. 2, Issue 12, December 2012, pp. 354-363.

E. Farvaresh et al., “Investigation of Gas Turbine Intake Air Cooling via Evaporative Media and Its Effects on Cartridge Filters Pressures Drop,� International Journal of Occupational Hygiene, Vol. 6, No. 2, 2014, pp. 75-80.

A. D. Pascale et al., “Analysis of Inlet Air Cooling for IGCC Power Augmentation,� Energy Procedia, Vol. 45, 2014, pp. 1265-1274. crossref

R. Espanani et al., “Efficiency Improvement Methods of Gas Turbine,� Energy and Environmental Engineering, Vol. 1(2), 2013, pp. 36-54. crossref

Technical Report, Evaluation of Gas Turbine Performance Improvement Alternatives for Indonesia Power, Power Phase LLC and Indonesian Institute of Sciences, No. 1246-001-01, January 28, 2015.

Indonesia Diesel prices, liter, available at:

Article Metrics

Metrics Loading ...

Metrics powered by PLOS ALM


  • There are currently no refbacks.

Copyright (c) 2015 Journal of Mechatronics, Electrical Power, and Vehicular Technology

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.