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ESTD Year: 2017 | Impact Factor (2026): 8.7
DOI Prefix: 10.47001/IRJIET
ESTD Year: 2017 | Impact Factor (2026): 8.7
DOI Prefix: 10.47001/IRJIET
Vol 10 No 6 (2026): Volume 10, Issue 6, June 2026 | Pages: 283-293
International Research Journal of Innovations in Engineering and Technology
OPEN ACCESS | Research Article | Published Date: 29-06-2026
This study examines the use of exhaust-gas heat to preheat the gas fuel in the GE 09HA.02 gas turbine. The objective is to evaluate heat recovery potential, pinch point characteristics, and improvements in system energy performance at operating loads of 50%, 75%, and 100%. Pinch analysis and process simulation with DWSIM are employed. In the current configuration, exhaust gas is discharged without heat recovery. In the simulated system, exhaust gas heat is recovered via HX-1 to raise natural gas temperature from 17°C to 215°C before combustion. Results demonstrate that higher operating loads increase recoverable heat, with Qrecovered rising from 7.34 MW at 50% load to 9.93 MW at 75% load, and reaching 13.00 MW at 100% load. Pinch point values remain relatively stable at 125.5°C, 126.5°C, and 126.3°C. Implementing the preheater increases turbine power, cycle work, and thermal efficiency across all load conditions. At 100% load, turbine power rises from 999.56 MW to 1016.84 MW, cycle work from 520.36 MW to 538.20 MW, and thermal efficiency from 42.064% to 43.506%. These findings indicate that utilizing exhaust gas heat as a fuel gas heater enhances internal energy efficiency and reduces heat loss in the gas turbine system.
pinch analysis, DWSIM simulation, waste heat recovery, fuel gas pre-heater, GE 09HA.02 gas turbine.
Achbar Fauzi, Marcelinus Christwardana, & Berkah Fajar Tamtomo Kiono. (2026). Pinch Analysis and Simulation on the Utilization of Exhaust Gas as a Gas Fuel Heater for Energy Evaluation of Gas Turbine at Various Operating Loads. International Research Journal of Innovations in Engineering and Technology - IRJIET, 10(6), 283-293. Article DOI https://doi.org/10.47001/IRJIET/2026.106036
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