Ramadhanti, Sheillovita Nafisa (2025) Analisis Pengaruh Variasi Jenis Biomassa dan Rasio Co – firing pada penggunaan batubara kalori rendah terhadap perfoma PLTU Kapasitas 350 MW serta Analisis Biaya Ekonomi Bahan Bakar dengan Menggunakan Aplikasi Cycle Tempo 5.0. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Peraturan PBB mengenai pengurangan emisi guna menurunkan potensi peningkatan temperatur dunia menjadi tantangan bagi PLTU. Co – firing menjadi salah satu alternatif bagi PLTU untuk dapat mengatasi tantangan tersebut dan juga dapat mengoptimalkan batubara kalori rendah yang jarang diminati industri lain. Penelitian ini bertujuan untuk menganalisis pengaruh co-firing biomassa berupa sekam padi dan jerami padi dengan batubara kalori rendah terhadap performa, kebutuhan udara, daya pemakaian sendiri, kemampuan komponen auxiliary, emisi CO₂, dan aspek ekonomi pada PLTU berkapasitas 350 MW. Penelitian ini menggunakan metode simulasi dengan perangkat lunak Cycle Tempo 5.0, dengan memvariasikan jenis batubara (LRC 3664, 3990, dan 4267 Kcal/kg), jenis biomassa (sekam padi dan jerami padi), dan rasio co-firing (3%, 5%, 7%, 10%, dan 15%) pada beban 100% dan 50%. Hasil analisis menunjukkan implementasi co-firing secara umum menurunkan performa PLTU, ditandai dengan penurunan efisiensi dan kenaikan Nett Plant Heat Rate (NPHR), terutama saat menggunakan batubara dengan nilai kalori paling rendah. Peningkatan rasio co-firing juga menaikkan laju alir bahan bakar dan kebutuhan daya komponen auxiliary seperti pulverizer dan fan. Namun, implementasi co-firing terbukti sangat efektif menurunkan emisi CO₂ secara signifikan dibandingkan pembakaran 100% batubara. Dari sisi ekonomi, penggunaan jerami padi menunjukkan potensi penghematan biaya bahan bakar, sementara sekam padi justru meningkatkan biaya. Terjadi penyimpangan pada penggunaan batubara HHV 3990 kcal/kg dengan rasio co-firing 3% yang mampu sedikit meningkatkan efisiensi pembangkit.
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United Nations regulations on emission reduction to curb the potential rise in global temperatures present a challenge for coal-fired power plants (PLTU). Co-firing offers an alternative for these plants to meet this challenge and to optimize the use of low-calorie coal, which is often overlooked by other industries. This research aims to analyze the impact of co-firing biomass, specifically rice husks and rice straw, with low-calorie coal on the performance, air requirements, auxiliary power consumption, auxiliary component capacity, CO₂ emissions, and economic aspects of a 350 MW power plant. The study employs a simulation method using Cycle Tempo 5.0 software, varying the coal type (LRC 3664, 3990, and 4267 Kcal/kg), biomass type (rice husk and rice straw), and co-firing ratios (3%, 5%, 7%, 10%, and 15%) at 100% and 50% plant loads. The analysis indicates that co-firing implementation generally reduces the power plant's performance, characterized by decreased efficiency and an increased Net Plant Heat Rate (NPHR), particularly when using the coal with the lowest caloric value. Increasing the co-firing ratio also raises the fuel flow rate and the power requirements of auxiliary components like the pulverizer and fans. However, co-firing is proven to be highly effective in significantly reducing CO₂ emissions compared to 100% coal combustion. Economically, using rice straw shows the potential for fuel cost savings, while rice husks lead to increased costs. The most optimal condition was found when using HHV 3990 kcal/kg coal with a 3% co-firing ratio, which managed to slightly improve the plant's efficiency.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Co-firing, Cycle Tempo, Efisiensi PLTU, Emisi CO₂, Jerami Padi, Sekam Padi, CO₂ Emissions, Power Plant Efficiency, Rice Straw, Rice Husk |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Sheillovita Nafisa Ramadhanti |
| Date Deposited: | 01 Aug 2025 04:18 |
| Last Modified: | 01 Aug 2025 04:18 |
| URI: | http://repository.its.ac.id/id/eprint/125716 |
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