The Effect of Inlet Air Cooling to Power Output Enhancement of Gas Turbine

Iman Firmansyah*, Prabowo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The performance of gas turbines is greatly affected by the ambient air temperature. Information from the operating data showed an increase in the power output when the air temperature drops. The power output increased by 0.61 MW, and the heat rate decreased by 10.86 kcal/kWh for every 1 ℃ decrease in air temperature. This case study was conducted by simulating the Cycle-Tempo software. Simulations were performed for existing conditions, modified with eva-cooler system, fog-spray system, and mechanical chiller. A comparison of gas turbine performance for each of these conditions was done to determine the effect of modifications on the gas turbine’s performance. Variations of ambient air temperature used in the simulations correspond to the operating data. The simulation results showed that the utilization of inlet air cooling can increase power output and lower the gas turbine’s heat rate. The maximum net power output obtained from the utilization of mechanical chiller technology was 8.46%.

Original languageEnglish
Title of host publicationRecent Advances in Renewable Energy Systems - Select Proceedings of ICOME 2021
EditorsMohan Kolhe, Aziz Muhammad, Abdel El Kharbachi, Tri Yogi Yuwono
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages8
ISBN (Print)9789811915802
Publication statusPublished - 2022
Event5th International Conference on Mechanical Engineering, ICOME 2021 - Virtual, Online
Duration: 25 Aug 202126 Aug 2021

Publication series

NameLecture Notes in Electrical Engineering
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119


Conference5th International Conference on Mechanical Engineering, ICOME 2021
CityVirtual, Online


  • Eva-cooler system
  • Fog-spray system
  • Gas turbine
  • Inlet air cooling
  • Mechanical chiller
  • Power output enhancement


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