WALUYOJATI, PANDU (2026) ANALISIS KINERJA TURBIN GAS TIPE GE MS6001B PASCA OVERHOUL DI PERUSAHAAN PETROKIMIA. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The GE MS6001B gas turbine at a petrochemical plant operates continuously in accordance with the running-hour intervals recommended by the manufacturer. To maintain its performance, an overhaul is required after 48,000 operating hours. However, during post-overhaul operation, the gas turbine frequently experiences high exhaust temperatures that may potentially lead to unit shutdown. The lack of comprehensive performance data, with generator load being the primary available operational parameter, makes performance evaluation difficult. Therefore, this study aims to determine the effect of overhaul on gas turbine performance and efficiency based on the Brayton cycle. The method used to analyze the effect of the overhaul involves analytical calculations of both the ideal and actual gas turbine cycles before and after the overhaul. The analysis includes the calculation of several performance parameters, namely specific fuel consumption, heat rate, thermal efficiency, compressor efficiency, and turbine efficiency, using secondary operational data collected before and after the overhaul. The results show that, after the overhaul, specific fuel consumption decreased by approximately 0.047 kg/kWh, or 16.26%, while heat rate decreased by approximately 2.38 MJ/kWh, or 16.43%. Thermal efficiency increased by approximately 4.89%, while compressor and turbine efficiencies increased by approximately 0.60%. Furthermore, the analysis indicates that the increase in exhaust temperature is primarily associated with the turbine exhaust enthalpy (h₄) and turbine efficiency (ηₜ). Keywords: Gas Turbine, Performance, Efficiency, Brayton Cycle Turbin gas GE MS6001B pada perusahaan petrokimia beroperasi non-stop berdasarkan running hours sesuai dengan rekomendasi manufaktur. Untuk menjaga kinerjanya diperlukan overhoul ketika runing hours 48.000 jam. Selama operasional pasca overhoul turbin gas sering mengalami masalah tempratur tinggi pada exhaust yang bisa mengakibatkan shutdown. Tidak tersedianya data kinerja yang komprehensif selain beban generator membuat analisis kinerja menjadi sulit dilakukan. Peneltian ini bertujuan agar mengetahui pengaruh overhaul pada unit turbin gas terhadap efisiensi turbin gas yang menggunakan siklus Brayton. Metode yang digunakan untuk menganalisis pengaruh overhoul adalah perhitungan analitik terhadap siklus ideal dan siklus aktual turbin gas sebelum dan sesudah overhoul. Perhitungan analitik dilakukan dengan menghitung beberapa parameter yaitu specific fuel consumption, heat rate efisiensi thermal, efisiensi kompresor dan efisiensi turbin. Perhitungan dilakukan berdasarkan data sekunder sebelum dan setelah overhoul. Sehingga diperoleh Nilai specific fuel consumption setelah overhoul turun sekitar 0.047 kg/kWh atau 16,26%. Heat rate turun sekitar 2.38 MJ/kWh atau 16.43%. Efisiensi termal naik sekitar 4.89%. Efisiensi kompresor dan turbin naik sebesar 0.60%. Serta diperoleh faktor penyebab kenaikan tempratur exhaust yang disebabkan oleh entalpi exhaust turbin (ℎ4) dan efisiensi turbin (ηt). Kata kunci : Turbin Gas, Kinerja, Efisiensi, Siklus Brayton
| Item Type: | Thesis (S1) |
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| NIM/NIDN Creators: | 41324120013 |
| Uncontrolled Keywords: | Turbin Gas, Kinerja, Efisiensi, Siklus Brayton |
| Subjects: | 500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 530 Physics/Fisika > 536 Heat/Panas > 536.5 Temperature/Temperatur, Suhu 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 23 Sep 2026 01:59 |
| Last Modified: | 23 Sep 2026 01:59 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/104051 |
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