Berikut adalah judul tersebut dengan format huruf kapital di awal setiap kata (Title Case): Analisis Emisi Pembakaran Co-Firing Torrefied Biomass Sawdust Pada Pembangkit Listrik Tenaga Uap (PLTU) 315 MW Menggunakan Metode Computational Fluid Dynamics (CFD)

Fatimah, Siti (2026) Berikut adalah judul tersebut dengan format huruf kapital di awal setiap kata (Title Case): Analisis Emisi Pembakaran Co-Firing Torrefied Biomass Sawdust Pada Pembangkit Listrik Tenaga Uap (PLTU) 315 MW Menggunakan Metode Computational Fluid Dynamics (CFD). Other thesis, Institut Teknologi Sepuluh Nopember.

Text 2039221026-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (5MB) | Request a copy

Abstract

Peningkatan penggunaan batubara sebagai bahan bakar utama pada Pembangkit Listrik Tenaga Uap (PLTU) berkontribusi terhadap tingginya emisi gas buang, khususnya karbon dioksida (CO2) dan sulfur dioksida (SO2), sehingga diperlukan upaya untuk mengurangi dampak lingkungan yang ditimbulkan. Salah satu alternatif yang dapat diterapkan adalah teknologi co-firing menggunakan torrefied biomass sawdust sebagai bahan bakar substitusi batubara (Hariana et al., 2022). Penelitian ini bertujuan menganalisis pengaruh variasi rasio co-firing torrefied biomass sawdust terhadap distribusi dan konsentrasi emisi CO2 dan SO2 pada PLTU 315 MW menggunakan metode Computational Fluid Dynamics (CFD). Simulasi dilakukan menggunakan ANSYS Fluent pada kondisi steady state dengan model turbulensi realizable k-ε dan pendekatan non-premixed combustion (Prabowo et al., 2025). Variasi co-firing yang dianalisis meliputi 2%, 6%, dan 10% berdasarkan kontribusi energi. Hasil simulasi menunjukkan bahwa peningkatan rasio co-firing menyebabkan daerah dengan konsentrasi emisi tinggi semakin berkurang dibandingkan kondisi full coal. Konsentrasi CO2 menurun dari 13,41 pada kondisi full coal menjadi 10,10; 10,27; dan 10,39 pada variasi co-firing 2%, 6%, dan 10%, dengan persentase penurunan berturut-turut sebesar 24,68%, 23,42%, dan 22,52%. Sementara itu, konsentrasi SO2 menurun dari 1,78 menjadi 1,70; 1,56; dan 1,41 dengan persentase penurunan sebesar 4,50%, 12,36%, dan 20,79%. Selain itu, nilai Furnace Exit Gas Temperature (FEGT) juga mengalami penurunan dari 1121,9°C pada kondisi full coal menjadi 1091,8°C pada co-firing 10%. Hasil penelitian menunjukkan bahwa penerapan co-firing torrefied biomass sawdust hingga rasio 10% mampu menurunkan emisi CO2 sebesar 22,52% dan emisi SO2 sebesar 20,79%, serta menurunkan Furnace Exit Gas Temperature (FEGT) sebesar 2,68% dibandingkan kondisi full coal. Hasil analisa ini menunjukkan bahwa torrefied biomass sawdust berpotensi sebagai bahan bakar pendamping batu bara yang mendukung pengurangan emisi gas buang, pengoperasian PLTU yang lebih ramah lingkungan, serta transisi energi menuju pemanfaatan energi yang lebih berkelanjutan.
=====================================================================================================================================
The increasing use of coal as the primary fuel in Coal-Fired Power Plants (CFPPs) contributes significantly to exhaust gas emissions, particularly carbon dioxide (CO2) and sulfur dioxide (SO2), necessitating efforts to mitigate their environmental impacts. One promising alternative is the implementation of co-firing technology using torrefied biomass sawdust as a substitute fuel for coal (Hariana et al., 2022). This study aims to analyze the effect of varying co-firing ratios of torrefied biomass sawdust on the distribution and concentration of CO2 and SO2 emissions in a 315 MW CFPP using the Computational Fluid Dynamics (CFD) method. Simulations were conducted in ANSYS Fluent under steady-state conditions employing the realizable k-ε turbulence model and the non-premixed combustion approach (Prabowo et al., 2025). The analyzed co-firing ratios were 2%, 6%, and 10% based on energy contribution. The simulation results indicate that increasing the co-firing ratio reduces the regions with high emission concentrations compared to the full coal condition. CO2 concentration decreased from 13.41 in the full coal case to 10.10, 10.27, and 10.39 for the 2%, 6%, and 10% co-firing scenarios, corresponding to reductions of 24.68%, 23.42%, and 22.52%, respectively. Meanwhile, SO2 concentration decreased from 1.78 to 1.70, 1.56, and 1.41, representing reductions of 4.50%, 12.36%, and 20.79%, respectively. In addition, the Furnace Exit Gas Temperature (FEGT) decreased from 1121.9°C under full coal conditions to 1091.8°C at the 10% co-firing ratio. The findings demonstrate that implementing co-firing torrefied biomass sawdust up to a 10% ratio is capable of reducing CO2 emissions by 22.52% and SO2 emissions by 20.79%, while also reducing the FEGT by 2.68% compared to the full coal condition. These results indicate that torrefied biomass sawdust has strong potential as a supplementary fuel for coal, supporting emission reduction efforts, environmentally friendly CFPP operations, and the transition toward more sustainable energy utilization.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CFD, Co-firing, Emisi, PLTU, Torrefied Biomass Sawdust. CFD, co-firing, emissions, coal-fired power plant, torrefied biomass sawdust.
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 > TJ324.5 Fuel systems T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Siti Fatimah
Date Deposited:	29 Jul 2026 01:58
Last Modified:	29 Jul 2026 01:59
URI:	http://repository.its.ac.id/id/eprint/139060

Actions (login required)

View Item