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All Journal Jurnal Inotera Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin SAINSTECH: Jurnal Penelitian dan Pengkajian Sains dan Teknologi
Dahmir Dahlan
Unknown Affiliation
Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengembangan Bioaditif Serai Wangi Pada Bahan Bakar Bensin Terhadap Performa Mesin Dan Emisi Gas Buang Sepeda Motor Budi Utomo Wisesa; Dahmir Dahlan
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol 10 No 2 (2020): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.v10i2.1486

Abstract

Bio-additives are elements derived from plants that are utilized as additives to improve fuel quality. Lemongrass fragrant oil is one of the types used as bio-additives that are volatile and soluble into fuels. The purpose of using this bio-additive is to improve the performance of the machine, but the resulting emissions must be in permissible regulations. This research was conducted by experimental methods, some of the tested samples consisted of gasoline (Pertalite), then the development was done by adding the element of lemongrass aromatic bio-additive on the fuel with a ratio of 1.5:1000 ml, 2.0:1000 ml, 2.5:1000 ml, 3.0:1000 ml, and 3.5:1000 ml. The sample test was carried out to measure engine performance, exhaust emissions, using Sportdevice Dyno and Emission Tester. Also, fuel consumption testing is carried out to determine the efficiency of fuel consumption. The results of this study the use of a fragrant lemongrass bio-additive can improve the performance of the motorcycle, maximum power increased by 3.11% at a ratio of 3.0:1000 ml and optimum torque are achieved at 2.03% at a ratio of 2.0:1000 ml. Then the result of exhaust emission measurement of HC and CO elements arising from the use of lemongrass bio-additives is still environmentally friendly In addition to the testing, fuel consumption measurement is also done by generating a savings of 20.93%, mileage 69.9 Km/L ratio using a ratio of 3.5:1000 ml.
Kinerja Turbin Mikrohidro Tipe Cross-Flow Kapasitas 2.700 Watt Muhammad Firdausi; M Dwi Trisno; Dahmir Dahlan
SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI Vol 26 No 2 (2016): SAINSTECH
Publisher : Institut Sains dan Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.128 KB) | DOI: 10.37277/stch.v26i2.506

Abstract

Keterbatasan pemerintah dalam memenuhi perluasan jaringan listrik sampai ke daerah terpencil menjadikan pembangkit listrik tenaga air sebagai solusi alternatif. Untuk memenuhi kebutuhan tersebut telah dilakukan perancangan, pembuatan dan pemasangan Turbin Air Pembangkit Listrik Tenaga Mikrohidro (PLTMH) di Desa Palasari, Kabupaten Bogor. Turbin dirancang dengan spesifikasi mampu membangkitkan daya listrik sebesar 2.700 Watt pada putaran turbin (n) = 214 rpm, dengan tinggi efektif air (He) = 2 m dan debit aliran air (Q) = 0,2 m3/s. Untuk mengetahui kinerja turbin telah dilakukan pengujian kinerja di lokasi pemasangan. Kinerja yang dimaksud dalam kegiatan ini adalah efisiensi turbin(ƞt), yaitu perbandingan antara output berupa energi mekanik turbin dan input berupa energi potensial dan kinetik zat cair yang dalam hal ini air. Pengujian dilakukan dengan mengukur debit air dan pengukuran daya turbin, kemudian dilakukan perhitungan efisiensi turbin. Pengukuran debit aliran dilakukankan dengan teknik bendungan. Daya turbin (Nt) ditentukan dengan melakukan pengukuran torsi (T) dan putaran (n) pada poros. Variasi debit air diperoleh dengan mengatur bukaan pintu pada saluran msuk. Hasil pengujian menunjukkan bahwa pada kondisi Head (H)= 2 m dan pembukaan pintu saluran masuk 100% tercatat debit aliran air (Q) = 0,20 m3/s daya turbin (Nt) = 2.856,14 Watt pada putaran (n) =1356,97 rpm, diperoleh efisiensi turbin (ηt) = 72,95%.
The Quality Test of Utilization of Palm Oil Solid Waste As a Raw Material For Refuse Derived Fuel (RDF) For Alternative Fuels. Imam Gunadi, Gathut; Dahmir Dahlan
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID397

Abstract

The use of palm oil solid waste as a raw material for refuse derived fuel (RDF) is a promising alternative to overcome environmental and energy problems. This study aims to test the quality of RDF produced from palm solid waste by paying attention to the composition of the mixture and treatment method through quantitative experimental methods, which are divided into two stages: processing and quality testing. The results showed that the average calorific value of RDF reached 4,216.75 cal/g, moisture content 10.76%, ash content 4.37%, volatile matter 58.11%, and fixed carbon 26.75%, all of which showed great potential as an alternative energy source. Although the RDF calorific value of palm solid waste is higher than the industry standard, the moisture content and ash content are still below international standards, and the calorific value is slightly below the SNI class 1 standard but higher than that of class 2 and 3. These findings indicate that RDF from palm oil solid waste has the potential to be a good quality alternative fuel.
Pengembangan Bioaditif Serai Wangi Pada Bahan Bakar Bensin Terhadap Performa Mesin Dan Emisi Gas Buang Sepeda Motor Budi Utomo Wisesa; Dahmir Dahlan
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 10 No. 2 (2020): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.v10i2.1486

Abstract

Bio-additives are elements derived from plants that are utilized as additives to improve fuel quality. Lemongrass fragrant oil is one of the types used as bio-additives that are volatile and soluble into fuels. The purpose of using this bio-additive is to improve the performance of the machine, but the resulting emissions must be in permissible regulations. This research was conducted by experimental methods, some of the tested samples consisted of gasoline (Pertalite), then the development was done by adding the element of lemongrass aromatic bio-additive on the fuel with a ratio of 1.5:1000 ml, 2.0:1000 ml, 2.5:1000 ml, 3.0:1000 ml, and 3.5:1000 ml. The sample test was carried out to measure engine performance, exhaust emissions, using Sportdevice Dyno and Emission Tester. Also, fuel consumption testing is carried out to determine the efficiency of fuel consumption. The results of this study the use of a fragrant lemongrass bio-additive can improve the performance of the motorcycle, maximum power increased by 3.11% at a ratio of 3.0:1000 ml and optimum torque are achieved at 2.03% at a ratio of 2.0:1000 ml. Then the result of exhaust emission measurement of HC and CO elements arising from the use of lemongrass bio-additives is still environmentally friendly In addition to the testing, fuel consumption measurement is also done by generating a savings of 20.93%, mileage 69.9 Km/L ratio using a ratio of 3.5:1000 ml.
Co-Authors Budi Utomo Wisesa Imam Gunadi, Gathut M Dwi Trisno Muhammad Firdausi