Bahtiar, Himawan Naufal (2025) Analisa Perbandingan Performa Dan Emisi Gas Engine Tipe JGS 620 GS-N.L Pembangkit Listrik Tenaga Mesin Gas 3,3 MW Pada Kondisi Sebelum Dan Sesudah Preventive Maintenance. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pembangkit Listrik Tenaga Mesin Gas (PLTMG) beroperasi menggunakan dua unit gas engine tipe JGS 620 GS-N.L berkapasitas 3,3 MW per unit untuk menghasilkan listrik. Tingginya frekuensi operasi gas engine memerlukan preventive maintenance secara intensif agar performa engine tetap optimal. Penelitian ini menguji perbandingan performa dan emisi gas buang yang dihasilkan oleh kedua unit gas engine pada kondisi sebelum dan sesudah preventive maintenance. Parameter yang diuji meliputi daya, torsi, brake mean effective pressure, brake spesific fuel consumption, efisiensi thermal serta kadar emisi gas buang meliputi CO, HC, CO2, O2, lambda dan Air Fuel Ratio (AFR).
Hasil penelitian menunjukkan bahwa preventive maintenance dapat meningkatkan performa dan mengendalikan kadar emisi berbahaya di seluruh titik pembebanan pada kedua unit gas
engine. Peningkatan daya tertinggi terjadi pada beban 2,5 MW unit 2 sebesar 133.610,05 Watt, disertai peningkatan torsi 851,02 N·m dan BMEP 85,72 kPa. Penurunan BSFC paling signifikan tercatat pada beban 2 MW unit 2 sebesar 0,00005713 kg/W.h, dengan peningkatan efisiensi termal tertinggi sebesar 3,23%. Dari sisi emisi, penurunan CO terbesar terjadi pada beban 1,5 MW unit 2 sebesar 0,04% atau 458,24 mg/Nm³, sedangkan penurunan HC tertinggi sebesar 16 ppm atau 10,50 mg/Nm³ terjadi pada beban 2 MW unit 2.
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The Gas Engine Power Plant operates using two gas engine units type JGS 620 GS-N.L with a capacity of 3,3 MW per unit to generate electricity. The high frequency of gas engine operation requires intensive preventive maintenance to maintain optimal engine performance. This study examines the comparison of performance and exhaust emissions produced by the two gas engine units in conditions before and after preventive maintenance. The parameters tested include power, torque, brake mean effective pressure, brake specific fuel consumption, thermal efficiency and exhaust emission levels including CO, HC, CO2, O2, lambda and air fuel ratio. The results show that preventive maintenance can improve performance and control harmful emission levels at all loading points on both gas engine units. The highest power increase occurred at 2,5 MW unit 2 load of 133.610,05 Watt, accompanied by an increase in torque of 851,02 N.m and BMEP of 85,72 kPa. The most significant decrease in BSFC was recorded at the 2 MW unit 2 load of 0,00005713 kg/W-h, with the highest increase in thermal efficiency of 3,23%. In terms of emissions, the largest CO decrease occurred at 1.5 MW unit 2 load by 0,04% (458,24 mg/Nm³), while the highest HC decrease of 16 ppm (10,50 mg/Nm³) occurred at 2 MW unit 2 load.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Performa, Emisi, Maintenance, Gas Engine, PLTMG =============================================================================================================================== Performance, Emission, Maintenance, Gas Engine, PLTMG |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction T Technology > TJ Mechanical engineering and machinery > TJ254.7 Combustion chambers T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics. T Technology > TJ Mechanical engineering and machinery > TJ785 Internal combustion engines. Spark ignition |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Himawan Naufal Bahtiar |
| Date Deposited: | 31 Jul 2025 07:00 |
| Last Modified: | 31 Jul 2025 07:00 |
| URI: | http://repository.its.ac.id/id/eprint/124283 |
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