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All Journal Journal of Renewable Energy and Mechanics Scientific Journal of Mechanical Engineering Kinematika Prosiding Seminar Nasional Teknologi Industri Berkelanjutan
Nashrul Chanief Hidayat
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Pengaruh Penambahan Dry Scrubber Terhadap Produksi Tar Pada Downdraft Gasifier Dengan Feedstock Sekam Padi Nashrul Chanief Hidayat; Harwin Saptoadi
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 02 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (772.396 KB)

Abstract

Downdraft gasifier merupakan jenis gasifier yang mampu menghasilkan syngas dengan kandungan tar rendah. Untuk dapat digunakan sebagai bahan bakar pada mesin pembakaran dalalam, kandungan tar pada syngas harus berkisar 50-100 mg/Nm³. Downdraft gasifier kurang kompatibel untuk feedstock biomassa dengan kandungan moisture 30%. Temperatur syngas ketika keluar dari dari gasifier berkisar 200-400°C. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan dry scrubber terhadap produksi tar dan efektifitas dalam menurunkan kandungan moisture pada kulit kakao. Kulit kakao dengan ukuran 1 cm, 2 cm, dan 3 cm, dengan massa 3 kg, 4 kg, dan 5 kg digunakan sebagai media dry scrubber. Gasifikasi dilakukan dengan menggunakan feedstock sekam padi sebanyak 5 kg pada setiap pengujian. Media gasifikasi yang digunakan adalah udara dengan equivalent ratio 0,30. Analisa kandungan tar pada syngas di lakukan dengan menggunakan metode tar gravimetric, dengan menggunakan impinggin botol yang di isi dengan isopropanol. Hasil penelitian menunjukan bahwa penambahan dry scrubber dengan ukuran kulit kakao 2 cm dan massa 5 kg dapat menurunkan produksi tar pada syngas menjadi 1,20 g/Nm³, sementara kandungan moisture pada kulit kakao dapat berkurang menjadi 8,66%. Komposisi H2, CO, CH4, dan CO2 pada syngas sebesar 2,36%, 2,90%, 0,71%, dan 9,88%, dengan nilai cold gas efficiency sebesar 26,08%.
PERANCANGAN SISTEM PNEUMATIK PLC TRAINER BERBASIS PEMOGRAMAN SOFTWARE FESTO FLUIDSIM 3.6 Kamal Hamzah; Adhes Gamayel; Mohamad Zaenudin; Yasya Khalif Perdana Saleh; Nashrul Chanief Hidayat
Scientific Journal of Mechanical Engineering Kinematika Vol 8 No 2 (2023): SJME Kinematika Desember 2023
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v8i2.259

Abstract

This study aims to carry out pneumatic trainer motion simulations using Festo Fluidsim 3.6 software programming simulation. The trainer design has three main parts, namely a frame made of iron, a programmable automatic control device in the form of a PLC, and the third is a mechanical movement device in the form of a pneumatic circuit. This tool will be integrated into a circuit system, which is then tested with three experiments based on circuit simulations made in the Festo Fluidsim 3.6 software. The test results from 3 simulation experiments show that the PLC control system can send signals to the mechanical motion of a single-acting cylinder. The PLC control system can also send signals to the mechanical motion of a double-acting cylinder with non-simultaneous motion. Other than that, the PLC control system can send signals on the mechanical motion of a double-acting cylinder with simultaneous motion. The three experimental tests found that the number of strokes for a single-acting cylinder was more than that for a double-acting cylinder. The three tests showed that they could move the cylinder well with variations in flow control, namely the flow control openings of 25, 50, 75 and 100%.
An Experimental Study on the Effect of a Water Injection System on Performance, Specific Fuel Consumption, and Exhaust Gas Emissions in a 110 cc Gasoline Engine MARBUN, JALYIAMSEP; Mujahidin, Didin Mujahidin; Nashrul Chanief Hidayat
Journal of Renewable Energy and Mechanics Vol. 9 No. 01 (2026): REM VOL 9 No 01 2026
Publisher : UIR PRESS

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Abstract

ABSTRACT The increase in motor vehicle numbers in developing countries has led to higher fuel demand and increased exhaust emissions, requiring technologies to optimise combustion and reduce environmental impact. This study aims to evaluate the effects of injection systems on engine performance, fuel consumption, and exhaust emissions in 110 cc gasoline engines. The experiment compared two configurations: standard operation (STD) and water injection (H₂O), in which distilled water was sprayed at 15% of the fuel volume at 400 kPa, controlled by an Arduino-based PWM system. Exhaust emissions were measured using an HG-520 gas analyser; performance was tested on a dynamometer; and fuel consumption was evaluated through a 15 km road test. The results showed that water injection significantly reduced HC and CO emissions by 49.4% and 90%, respectively, while CO₂ remained stable and O₂ decreased by 74.60%, indicating more effective combustion. Engine performance improved, with power increasing by 6.26% and torque increasing by 6.26%. However, fuel consumption increased by 18.75%. Overall, water injection can improve combustion quality and engine output, but further optimisation is needed to improve fuel efficiency.  
Co-Authors Adhes Gamayel Harwin Saptoadi Kamal Hamzah Marbun, Jalyiamsep Mohamad Zaenudin Mujahidin, Didin Mujahidin Yasya Khalif Perdana Saleh