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All Journal Jurnal Teknik Mesin International Journal of Renewable Energy Development Rekayasa Mesin Journal of Engineering and Technological Sciences Jurnal Energi dan Lingkungan (Enerlink) International Journal of Marine Engineering Innovation and Research International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Journal Of World Science Journal Research of Social Science, Economics, and Management International Journal of Renewable Energy Development Prosiding SNTTM
Adi Surjosatyo
Departemen Teknik Mesin, Fakultas Teknik, Universitas Indonesia, Depok
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Improvement of Tar Removal Performance in Biomass Gasification Using Fixed-Bed Biomass Filtration Hafif Dafiqurrohman; Dadan Kosasih; Arief Wildhan Naro Putra; Muhammad Ismail Bagus Setyawan; Adi Surjosatyo
Journal of Engineering and Technological Sciences Vol. 52 No. 4 (2020)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2020.52.4.7

Abstract

Several studies have proven the efficiency of gasification as a thermal process in terms of material decomposition and chemical energy. Synthetic gas (syngas) is a gasification product that can be used as an energy source. However, it needs to undergo treatment to remove the tar content, which could cause several issues in the combustion system. Tar removal can be conducted through biomass filters. In this study, three types of filters were investigated: biochar, rice straw, and rice husk filters. Three thicknesses of the porous media (30, 40, and 50 cm) were investigated. The results revealed that porous media thickness significantly affects tar removal efficiency, as the efficiency was found to increase with the thickness. Biochar was proven to be the best filter media among the three types, with a tar removal efficiency of 59.45% at a thickness of 50 cm.
Pembakaran Gas Hasil Gasifikasi Biomassa di Premixed Gas Burner dengan Metoda 3D Computational Fluid Dynamic Adi Surjosatyo
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 1 (2010): APRIL 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

The depletion of worlwide energy reservation and environmental issue caused by fossil fuel pollution urge mankind to find a suitable alternative energy to overcome this problem. Producer gas from biomass gasification is an example of an alternative energy that could substitute fossil fuel in a certain combustion operation. Using producer gas to generate heat needs gas burner system that can produce an effective gas flame with low emission gas. This study is using modeling and simulation of gas flame using 3D-CFD method. The gas burner model has two condition, namely, using conical flame stabilizer and without conical flame stabilizer, and the velocity tangential air supply is varied into three speed of 3 m/s, 6 m/s and 9 m/s, respectively. The result of this simulation shows the additional of conical flame stabilizer produces a shorter flame, increases flames stability and reduces CO emission. The experimental result shows a similar pattern compared with that of the simulation result. Abstract in Bahasa Indonesia: Dengan menipisnya cadangan minyak dunia dan masalah lingkungan yang diakibatkan oleh pembakaran bahan bakar fossil, maka diperlukan energi alternatif dalam mengatasi hal tersebut. Bahan bakar gas dari proses gasifikasi biomassa (producer gas) adalah salah satu energi alternatif yang dapat menggantikan bahan bakar fosil. Pemanfaatan producer gas untuk aplikasi pengeringan dan pemanasan boiler memerlukan suatu sistem gas burner yang dapat menghasilkan panas tinggi dan polusi rendah. Pada penelitian ini sebuah model gas burner berbahan bakar producer gas dilakukan pemodelan simulasi secara 3D menggunakan CFD. Simulasi dilakukan dengan menggunakan swirl gas burner dengan menggunakan conical flame stabilizer dan tanpa menggunakan conical flame stabilizer pada variasi kecepatan udara masuk tangensial 3 m/s, 6 m/s dan 9 m/s. Hasil simulasi menunjukkan penambahan conical flame stabilizer menghasilkan api yang lebih pendek dan stabil. Penambahan kecepatan udara memendekkan panjang api dan menurunkan temperatur api. Validasi eksperimental dilakukan pada gas swirl burner yang menggunakan conical flame stabilizer. Simulasi dan eksperiment menunjukkan hasil yang tidak jauh berbeda. Kata kunci: CFD, producer gas, gas burner, conical flame stabilizer.
Simulasi dan Eksperimental Isothermal Aliran Eksternal Resirkulasi pada Up-Draft Gasifier Fajri Vidian; Hery Prabowo; Yulianto .; Adi Surjosatyo; Yulianto Sulistyo Nugroho
Jurnal Teknik Mesin (Sinta 3) Vol. 13 No. 1 (2011): APRIL 2011
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Gasification process at updraft gasifier produces greater amount of tar than other type of gasifier. To reduce tar at updraft gasifier, the pirolysis gas will be re-circulated to combustion zone and to exhaust gas from reduction zone. Recirculation of pirolysis gas to combustion zone can be carried out by using ejector. Ejector is an equipment used to inject the secondary fluid flow by the movement of momentum and energy from high speed primary flow (jet). The research conducted with isothermal 3D simulation using CFD and experimental investigation of recirculation flow using ejector at updraft gasifier. Ejector velocity for simulation and experimentation is constant at 0.6 m/s. Ejector’s nozzle exit position (NXP) direction will be varied. The goal of this research is to obtain information of optimal nozzle exit position for producing maximum velocity of gas recirculation. The result of simulation and experiment shows that the change of nozzle exit position direction to – x axis from zero point, it will give maximum velocity of gas recirculation flow with the optimum position of nozzle exit position at the range of -3 to -4 cm from zero point.
KARAKTERISASI PEMBAKARAN BATUBARA HALUS DALAM LINGKUNGAN UDARA DAN OXY-FUEL Cahyadi Cahyadi; Dwika Budianto; Adi Surjosatyo; Yulianto S. Nugroho
Jurnal Energi dan Lingkungan (Enerlink) Vol. 10 No. 1 (2014)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v10i1.4307

Abstract

PREDIKSI KARAKTERISTIK PEMBAKARAN OXY-FUEL DENGAN PEMODELAN CFD Dwika Budianto; Cahyadi Cahyadi; Adi Surjosatyo; Yulianto S. Nugroho
Jurnal Energi dan Lingkungan (Enerlink) Vol. 10 No. 1 (2014)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/elk.v10i1.4310

Abstract

Performance Evaluation of a Continuous Downdraft Gasification Reactor Driven by Electric Motors with Manual Mode of Operation Rachman Setiawan; Hanif Furqon Hidayat; Hafif Dafiqurrohman; Adi Surjosatyo; Radon Dhelika
Journal of Engineering and Technological Sciences Vol. 54 No. 4 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.4.5

Abstract

Gasification is considered a promising option for harnessing energy potential from agricultural waste, such as rice husks. This paper presents a 10-kW rice husk fixed bed gasifier system. This system is an improved version of a prototype previously developed by our research group. Some of the optimized features added to the gasifier include the use of a circular air intake, an improved gas cleaning system, and electric motors that are regulated by a programmable logic controller. Keeping the gasifier system’s operation stable is critical for producing high-quality synthetic gas (syngas). Therefore, performance evaluation of the presented gasifier system was conducted, and the resulting syngas outputs were analyzed. The evaluation also included an investigation into the performance of the motors, particularly those used for feeding and char removal, which are critical components of the system. The results showed that the improved gasifier system was stable with a proper feedstock. A discussion of the parameters affecting the composition of the synthetic gas is also presented.
Experimental Study of Rice Husk Fluidization Without a Sand Bed Material on a Bubbling Fluidized Bed Gasifier Abeth Novria Sonjaya; Kania Safitri; Adi Surjosatyo
International Journal of Renewable Energy Development Vol 12, No 1 (2023): January 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.46068

Abstract

This study aimed to determine the effect of rice husk fluidization and variation in the equivalence ratio of bubbling fluidized bed gasifiers without sand bed materials. It also aimed to improve the fluidization quality by reducing the diameter of rice husks. Therefore, the bulk density increases, whereas voidage decreases, both of which are the main parameters for improving the quality of fluidization in solid particles. Experiments were carried out at a velocity of 0.82 m/s, by varying the equivalent ratios ranging from 0.20 to 0.35, and analyzing the syngas composition, cold gas and carbon conversion efficiencies, lower heating value, and temperature distribution. An equivalence ratio of 0.30 was obtained for a bubbling fluidized gasifier with syngas compositions of 7.415%, 15.674%, 3.071%, 17.839%, and 56.031% for H2, CO, CH4, CO2, and N2, respectively. Under these conditions, we obtained cold gas and carbon conversion efficiencies and a lower heating value of 31.340%, 37.120%, and 3.881 MJ/Nm3, respectively.
Mobile Rice Husk Gasifier Performance and Techno-Economic Analysis as Micro Scale Power Generation: Modeling and Experiment Sarah Pertiwi; Yohanes Bobby; Marcellino Lorenzo; Hafif Dafiqurrohman; Adi Surjosatyo
Journal of Engineering and Technological Sciences Vol. 54 No. 6 (2022)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.6.8

Abstract

Indonesia annually produces significant amounts of biomass waste in the agriculture sector. Rice husk, one of the highest produced agricultural waste materials, has sufficient caloric value to produce syngas in a gasification system to generate sustainable energy. However, the production of tar from rice husk gasification is significantly high, damaging the equipment and internal combustion engine. This study carried out performance analysis on a small-scale rice husk gasifier. A simulation provided a syngas composition overview and showed a maximum LHV value of 6.47 MJ/Nm3 at ER 0.25, and a maximum CGE value of 83% at a temperature of 900 ℃. Furthermore, the economic aspect of integrating renewable technology was also considered. The gasifier had an LCOE value ranging from 0.014 to 0.089 USD/kW, depending on the use of the gasifier. The feasibility of using a mobile rice husk gasifier was also inspected, based on net present value, benefit-to-cost ratio, and payback period.
Experimental Study of Rice Husk Fluidization Without a Sand Bed Material on a Bubbling Fluidized Bed Gasifier Abeth Novria Sonjaya; Kania Safitri; Adi Surjosatyo
International Journal of Renewable Energy Development Vol 12, No 1 (2023): January 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.46068

Abstract

This study aimed to determine the effect of rice husk fluidization and variation in the equivalence ratio of bubbling fluidized bed gasifiers without sand bed materials. It also aimed to improve the fluidization quality by reducing the diameter of rice husks. Therefore, the bulk density increases, whereas voidage decreases, both of which are the main parameters for improving the quality of fluidization in solid particles. Experiments were carried out at a velocity of 0.82 m/s, by varying the equivalent ratios ranging from 0.20 to 0.35, and analyzing the syngas composition, cold gas and carbon conversion efficiencies, lower heating value, and temperature distribution. An equivalence ratio of 0.30 was obtained for a bubbling fluidized gasifier with syngas compositions of 7.415%, 15.674%, 3.071%, 17.839%, and 56.031% for H2, CO, CH4, CO2, and N2, respectively. Under these conditions, we obtained cold gas and carbon conversion efficiencies and a lower heating value of 31.340%, 37.120%, and 3.881 MJ/Nm3, respectively.
TECHNO-ECONOMIC ANALYSIS OF BOILER WASTE HEAT-BASED BIOMASS DRYING SYSTEM OF A COAL COFIRING POWER PLANT Baisir, Mahpudi; Surjosatyo, Adi; Dafiqurrohman, Hafif
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1858

Abstract

This research aims to find the optimal operating pattern in a rotary dryer type biomass drying system with the heating medium from exhaust gas leaving the boiler. This heating medium is believed to provide high profits because it does not require additional energy. However, the lowest moisture may not necessarily provide maximum investment profits due to trade-offs with capital and operational costs. The research results show that the test point at a biomass inlet flow of 10 t/h, a residence time of 25 minutes, and an exhaust gas flow of 90 t/h can optimally obtain the highest three investment parameters, including USD 8,518,085.33 for NPV, 150.32% for IRR, and 0.67 years for PBP. So that it succeeds in reducing the biomass moisture from 44.57% to 10.90%. Reductions in energy output and operational duration should be avoided wherever possible because they have a significant impact on reducing profit.
Co-Authors Abeth Novria Sonjaya Arief Wildhan Naro Putra Baisir, Mahpudi Baskoro Lokahita Cahyadi Cahyadi Cahyadi Cahyadi Cindy Rianti Priadi Dadan Kosasih Dafiqurrohman, Hafif Dimas Angga Fakhri Muzhoffar Dwika Budianto Dwika Budianto Elang Nur Reiz M N Insaani Fajri Vidian Gunawan Budiyanto Gunawan, Gunawan Hafif Dafiqurrohman Hafif Dafiqurrohman Hafif Dafiqurrohman Hafif Dafiqurrohman Hanif Furqon Hidayat Hery Prabowo Kania Safitri Lestari, Puspa Marcellino Lorenzo Muhammad Ismail Bagus Setyawan Muzhoffar, Dimas Angga Fakhri Panji Utomo Pradana, M. Rizky Qossam, Izzuddin Al Rachman Setiawan Radon Dhelika Saputro, Bayu Aji Sarah Pertiwi Sari, Wanda Rulita Sari, Wanda Rulita Siantar, Gabriella A L Siregar, Sri Rachmawati Sofianita, Rifka Sulistomo, Try Rahadi Sumirat, Tito Wanda Rulita Sari Yohanes Bobby Yulianto . Yulianto Sulistyo Nugroho