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All Journal JMES The International Journal of Mechanical Engineering and Sciences Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Jurnal Ar Ro'is Mandalika (Armada) JIPOWER : Journal of Intellectual Power
Atok Setiyawan
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Numerical Study Effect of Fluidizing Air to Erosion Pattern in Circulating Fluidized Bed Boiler Bambang Sudarmanta; Rizki Mohammad Wijayanto; Giri Nugroho; Achmad Syaifudin; Atok Setiyawan; Julendra B. Ariateja
JMES The International Journal of Mechanical Engineering and Sciences Vol 1, No 2 (2017)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v1i2.3901

Abstract

Bed material particles in a Circulating Fluidized Bed (CFB) boiler which entrained in the flue gas may cause material degradation due to abrrasive and high velocity impact of particles to wall surface. In this study, Computational Fluid Dynamic (CFD) commercial software with Eulerian multiphase is used to study the erosion pattern in several different fluidizing air velocity. The result obtained from simulation in terms of particles volume fraction and particles velocity in selected area was utilised to predict the erosion rate in several different fluidizing air velocity to achieve the optimal value of fluidizing air velocity. The results obtained in this study are helpful to understand how erosion pattern in CFB boiler, how effect fluidizing air velocity to erosion rate, and also helped to know the potential areas occur erosion so helped to choose suitable material in different region.
Karakteristik Pembakaran Pada Pembangkit Listrik Tenaga Diesel Menggunakan Biodiesel Minyak Kelapa Sawit (B35 dan B40) Suluh Pertiwanda; Atok Setiyawan
Jurnal Ar Ro'is Mandalika (Armada) Vol. 5 No. 3 (2025): JURNAL AR RO'IS MANDALIKA (ARMADA)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/armada.v5i3.5146

Abstract

Biodiesel merupakan salah satu bahan bakar alternatif yang ramah lingkungan. Untuk itu pada penelitian ini dilakukan analisa terkait kinerja pembakaran dari campuran biodiesel B35 dan B40 pada pembangkit listrik tenaga diesel berdaya 3 MW, dengan pengujian pada variasi beban 50%, 75%, dan 100%. Hasilnya menunjukkan bahwa penggunaan B40 mampu meningkatkan daya sebesar 3,06% dan tekanan efektif rata-rata rem (BMEP) sebesar 2,29% dibandingkan dengan B35. Meskipun terjadi kenaikan konsumsi bahan bakar spesifik (SFC) sebesar 0,60% pada B40, temuan ini mengindikasikan bahwa efek positif dari peningkatan kandungan oksigen dalam campuran biodiesel lebih dominan daripada dampak penurunan nilai kalornya. Namun, viskositas B40 yang lebih tinggi memiliki beberapa konsekuensi. Ini menyebabkan penundaan penyalaan (ID) menjadi lebih panjang sebesar 0,92° CA, penurunan tekanan silinder sebesar 1,67%, dan pergeseran tekanan puncak sebesar 0,73° menjauhi titik mati atas (TMA). Secara keseluruhan, biodiesel B40 menunjukkan potensi yang signifikan dalam meningkatkan daya dan BMEP pada pembangkit listrik diesel. Meskipun demikian, tantangan terkait peningkatan SFC perlu diatasi melalui optimalisasi lebih lanjut untuk memaksimalkan efisiensi dan manfaat penggunaan biodiesel ini.
Studi Analisa Dekarbonisasi Pengembangan Sektor Ketenagalistrikan Pada Sistem Sulawesi Bagian Selatan Qorry Angga Ramadhany; Atok Setiyawan
Jurnal Ar Ro'is Mandalika (Armada) Vol. 5 No. 3 (2025): JURNAL AR RO'IS MANDALIKA (ARMADA)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59613/armada.v5i3.5168

Abstract

Degradasi lingkungan akibat peningkatan emisi gas rumah kaca (GRK) dari sektor ketenagalistrikan merupakan tantangan besar bagi Indonesia, terutama dengan pertumbuhan kebutuhan listrik yang berkelanjutan. Pemilihan pembangkit listrik yang efisien biaya produksi menjadi krusial. Penelitian ini menganalisis upaya dekarbonisasi di sistem kelistrikan Sulawesi Bagian Selatan, mengevaluasi dampak penurunan Emisi Karbon dan Implikasi Ekonomi- Biaya Pokok Penyediaan Tenaga Listrik (BPP). Penelitian ini menganalisa 2 skenario utama dibandingkan dengan operasi Business as Usual (BaU) seperti yang tercantum pada RUPTL (2021-2030): (i) Substitusi Bahan Bakar/Co-Firing dan EBT (Moderat) dan (ii) Implementasi Co-Firing, EBT dan Carbon Capture & Storage (CCS) pada Pembangkit Fosil (Ekstrem). Analisis dilakukan pada periode 2022-2030, dengan penambahan pembangkit yang konsisten berdasarkan RUPTL 2021-2030. Hasil menunjukkan bahwa pada tahun 2030, skenario Moderat dan Ekstrem dapat menurunkan emisi masing- masing sebesar 26,4% dan 56,67% dari BaU; 15,3 Juta Ton.CO2. Implementasi CCSU pada PLTU dan PLTGU memungkinkan penurunan Emisi CO2 hingga 86. Temuan ini penting sebagai pertimbangan untuk mencapai target penurunan emisi GRK Nasional Indonesia.
STUDY OF DIESEL POWER PLANT REPLACEMENT WITH AN OFF-GRID SOLAR PHOTOVOLTAIC SYSTEM Gustiyadi Fathur Rahmandi; Atok Setiyawan; Hendro Nurhadi
JIPOWER : Journal of Intellectual Power Vol. 2 No. 03 (2025): December 2025 - Maret 2026
Publisher : Yayasan Inspirasi Merah Putih Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63786/jipower.v2i03.63

Abstract

The electrification ratio on the island of Kalimantan has increased significantly from 2014 to 2024, significantly impacting people's lives, especially in Central Kalimantan Province. North Barito Regency is one of the regions that continues to strive to meet the electricity needs of its residents who still lack access to electricity, especially in the 3T (Outermost, Frontier, and Disadvantaged) areas through the Electrification Ratio (RE) program. This vast area presents a unique challenge in ensuring the equitable distribution of electricity to these 3T areas. To meet the National RE target and utilize the various types of power plants currently available in North Barito Regency, as well as to support the transition to New and Renewable Energy (EBT), PLN is connecting the existing electricity grid to the new grid through a network expansion scheme in urban areas. Meanwhile, in the 3T areas, renewable energy is being utilized, such as the construction of solar power plants (PLTS) capable of providing a 24-hour electricity supply. The main obstacles facing PLN (State Electricity Company) in Kalimantan in implementing this RE program include inadequate road access and road conditions for transporting electricity grid infrastructure materials, weather conditions (rain can slow work progress), and permits for 20 kV electricity grid infrastructure from individuals, groups, organizations, or business entities. This research will outline a plan to replace diesel-powered plants (PLTD) with off-grid solar power plants (PLTS) as a renewable energy source, taking into account operating load patterns and the efficiency of the solar power plants, based on the PV panel materials used: monocrystalline and polycrystalline. It is hoped that this study will provide information on the impact of PLTS development on the existing electricity system, enabling PLN to be more efficient in supporting the achievement of a 23% renewable energy mix by 2025.
TECHNO-ECONOMIC ASSESMENT OF REPLACING DIESEL POWER PLANTS WITH OFF-GRID SOLAR PHOTOVOLTAIC SYSTEMS IN REMOTE ELECTRIFIED VILLAGES: A CASE STUDY OF GUNUNG PUREI, INDONESIA Gustiyadi Fathur Rahmandi; Atok Setiyawan; Hendro Nurhadi
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 2 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18491819

Abstract

The electrification of remote and isolated areas remains a major challenge in Indonesia, particularly in 3T (Outermost, Frontier, and Disadvantaged) regions that still rely on diesel power plants with limited operating hours. This study evaluates the technical and economic feasibility of replacing an existing diesel power plant (PLTD) with an off-grid solar photovoltaic (PV) system integrated with battery energy storage at the Gunung Purei Village Electricity Unit (ULD), Central Kalimantan.The proposed system is designed to transform a 14-hour diesel-based operation into a continuous 24-hour electricity supply. Technical analysis was conducted using PVsyst to assess energy production and performance ratio (PR), while economic feasibility was evaluated using HOMER Pro through indicators such as Net Present Value (NPV), Levelized Cost of Energy (LCOE), Profitability Index (PI), and Discounted Payback Period (DPP). The study compares monocrystalline and polycrystalline PV modules under different battery autonomy scenarios.Results show that the optimal configuration consists of a 588 kWp off-grid solar PV system using 940 monocrystalline PV modules, five 100 kW inverters, a 500 kW power conversion system, and 27 battery sets with a total capacity of 2.94 MWh (one-day autonomy). This configuration achieves a performance ratio of 34.78% and satisfies the annual load demand of 896.19 MWh. From an economic perspective, the system is feasible, yielding a positive NPV of IDR 8.36 billion, a PI of 1.30, and a DPP of 24.77 years.The findings confirm that off-grid solar PV–battery systems using monocrystalline modules provide a technically reliable and economically viable solution for replacing diesel generation in remote electrified villages, while supporting Indonesia’s renewable energy mix target of 23%.
Co-Authors Bambang Sudarmanta Gustiyadi Fathur Rahmandi Hendro Nurhadi Julendra B. Ariateja Nugroho, Giri Qorry Angga Ramadhany Rizki Mohammad Wijayanto Suluh Pertiwanda Tiara Aninditha