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Effects of Eugenol and Cineol Compound on Diffusion Burning Rate Characteristics of Crude Coconut Oil Droplet Helen Riupassa; Suyatno Suyatno; Hendry Y. Nanlohy; Andi Sanata; Trismawati Trismawati; Rachmat Subagyo; Satworo Adiwidodo; Muhammad Akhlis Rizza; Masaki Yamaguchi; Takuya Tomidokoro; Selcuk Sarikoc
Automotive Experiences Vol. 6 No. 1 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.8150

Abstract

The burning rate of coconut oil droplets has been investigated experimentally by adding bio-additives of clove oil and eucalyptus oil. Tests were carried out with single droplets suspended on thermocouples at room atmospheric pressure, and room temperature and ignited with a hot wire. The addition of clove oil and eucalyptus oil as bio-additives into coconut oil was 100 ppm and 300 ppm, respectively. The droplet combustion method was chosen to increase the contact area between the air and fuel so that the reactivity of the fuel molecules increases. The results showed that the eugenol compounds contained in clove oil and cineol compounds in eucalyptus oil were both aromatic, and had an unsymmetrical carbon chain geometry structure. Furthermore, this factor can potentially accelerate the occurrence of effective collisions between fuel molecules. Therefore the fuel is combustible, as evidenced by the increased burning rate, where the results show that without bio-additives, the burning rate of crude coconut oil (CCO) is about 0.7 seconds. These results are 0.15 to 0.2 seconds slower than CCO with bio-additive, which is around 0.55 to 0.6 seconds. Moreover, from the observations, it was found that the highest burning rate was achieved in both bio-additives with a concentration of 300 ppm.
PENGARUH VARIASI DIAMETER TERHADAP DISTRIBUSI TEMPERATUR PADA MESO COMBUSTOR DENGAN SUDDEN EXPANSION Prabowo Restu Eranio; Rosyadi Adib Ahmad; Syuhri Ahmad; Intan Hardiatama; Andi Sanata; Skriptyan Noor HS; M Edoward Ramadhan
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 1 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Meningkatkan distribusi temperatur pada meso combustor merupakan cara yang efektif dalam meningkatkan efisiensi sistem pembangkit daya micro TPV (thermophotovoltaic). Diameter combustor sangat mempengaruhi distribusi temperatur pada combustor. Tujuan dari penelitian dalam karya tulis ilmiah ini adalah untuk mengamati pengaruh variasi diameter combustor terhadap temperatur dengan mengukur temperatur dinding (Tw) dan ruang bakar (Ti) pada tiga variasi diameter outlet (Do) combustor berukuran 5 mm, 5,5 mm dan 6 mm dengan diameter inlet (Di) yang konstan sebesar 4,5 mm. Hasil penelitian menunjukan bahwa diameter meso combustor sangat mempengaruhi suhu pada dinding dan ruang bakar. Suhu pada dinding combustor (Tw) dipengaruhi oleh besaran surface to volume ratio karena variasi diameter pada combustor, dimana semakin besar nilai rasio (Do combustor kecil) akan menghasilkan suhu dinding yang lebih tinggi, namun dengan heat losses yang besar. Sedangkan suhu pada ruang bakar combustor (Ti) dipengaruhi oleh besarnya vortex yang terbentuk di area sudden expansion. Sudden expansion berukuran besar (Do combustor besar) akan membentuk vortex yang besar sehingga meningkatkan suhu ruang bakar, namun membuat nyala api semakin tidak stabil karena massa berlebih yang dibawa oleh vortex ke dalam zona reaksi.
Ethanol Blend Effects on The Spray Properties of a Biodiesel Fuel by Ambient Pressure Variation Nasrul Ilminnafik; Intan Hardiatama; Ahmad Adib Rosadi; Andi Sanata; Faiz Firdausi
Indonesian Journal of Applied Research (IJAR) Vol. 4 No. 2 (2023): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v4i2.287

Abstract

Diesel engine spray nozzles are crucial to pollutant generation and engine efficiency. Nozzle performance can be enhanced by adjusting the nozzle's internals. A successful demonstration of the nozzle would be one in which the spray's outcome was uniformly dispersed throughout a wide area, with the grains scattered similarly. The purpose of this research was to examine how a diesel-ethanol characteristic under normal atmospheric pressure (spray tip penetration, the velocity of spray, and spray angle) and, in general, to assess the performance of biodiesel fuel on diesel engines, a substantial amount of biodiesel and operational expenses for the engine are necessary. It was an experimental approach to the study. The research involved recording spray fuel at the nozzle. Using a 480 fps high-speed camera, we tested BD20, BD20E5, and BD20E10 fuel at three different ambient pressures (1 bar, 2 bar, and 3 bar). The injection pressure was 15 MPa, and the fuel temperature was 28.2 degrees Celsius. Spray tip penetration and spray velocity decreased and spray angle increased after ethanol was added to the mixture, consistent with the studies' findings. Lowered spray tip penetration, slower spray speeds, and a complete spray angle result from the increased ambient pressure.
Effect of airflow rate and honeycomb channels addition on the efficiency of bagasse-fuelled top-lit updraft (TLUD) gasification stove Clarissa Putri Sholeha; Muhammad Trifiananto; Mahros Darsin; Andi Sanata; Imam Sholahuddin; Ariyo Anindito
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 9 No. 1 (2024)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v9i1.31776

Abstract

The use of Liquefied Petroleum Gas (LPG) fuels has increased over time and has triggered the innovation of renewable fuels that do not affect the environment. This renewable fuel is biomass. Biomass is derived from organic materials of plants or animals that can be used as fuel. The conversion of biomass into thermal energy using gasification stoves can increase thermal efficiency up to twice that of conventional biomass combustion. Common stoves that use nowadays is Top-Lit Updraft (TLUD) gasifier that easy to optimize. This type of gasifier has a simple design and can be fuelled with any type of biomass with a water composition of less than 20%. Gasification stoves have so far been developed using various biomass fuels, one of which is bagasse waste. Bagasse is also easy to obtain in Indonesia because it has an abundant number of quantities. In addition to the fuel aspect, the ability of the gasification stove to produce good thermal efficiency depends on the stove design, such as stove type, stove dimensions, and combustion airflow rate. It is tested with the water boiling test method using variations of airflow rate of 2 m/s, 3.5 m/s, 5 m/s, and 6.5 m/s and honeycomb channels addition. As a result, it reached 30% thermal efficiency.
STUDI NUMERIK KARAKTERISTIK PENGABUTAN BAHAN BAKAR DIESEL, BIODIESEL DAN CAMPURANNYA Hardiatama, Intan; Aziz, Muhammad Lutfi; Ilminafik, Nasrul; Sanata, Andi; Rosyadi, Ahmad Adib
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.907

Abstract

Biodiesel predicted to replace diesel fuel in the future that comes from the transesterification process of plant oils, animal fats, or used oils. One of the potential raw materials is nyamplung seeds because they are scattered in Indonesia, easy to cultivate, and bear fruit throughout the year [1]. The purpose of this study was to determine the effect of mixing pure diesel fuel and nyamplung biodiesel with the fuel composition B0, B20, B30, and B100 on the spray tip characteristics penetration, spray angle, and sauter mean diameter.This study focussed on simulation. The simulation method is carried out to predict the distribution and mean diameter of droplet using commercial fluent software. Fuel spray is carried out in free air with an injection pressure of 15 MPa, fuel temperature 28.2 ℃ and free air temperature 30.1 ℃. The spray process was taken at 6.25 ms and then the fuel spray characteristics were measured using the ImageJ application.The results of testing the fuel spray characteristics indicate that the amount of biodiesel content in the fuel is 20-100%. It can increase the length of spray tip penetration about 0.7-4.9%, a decrease in spray angle of 9.2-32.1% and the sauter mean diameter value increased by 20.1-84.6%. It caused by increasing the amount of biodiesel content in the fuel which results in an increase in the value of density, viscosity and surface tension of the fuel.
ANALISIS KEKASARAN PERMUKAAN PADA PROSES PENGEBORAN ALUMINIUM 6061 Jannah, Betriqil; Sanata, Andi; Koekoeh KW, Robertoes; Junus, Salahuddin; Ramadhan, M Edoward; Sutjahjono, Hary
STATOR: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2023): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

This research aims to determine the influence of spindle speed, tool diameter, and coolant on the surface roughness in the process of drilling Aluminum 6061 and identify the most optimal variable. Surface roughness is significantly affected by the spindle speed variable, which contributes to 46,47% of the outcome. The coolant variable contributes 31,17%, while the tool diameter variable has the smallest percentage contribution of 9,61%. The process variables for spindle speed (535 Rpm, 865 Rpm, 1520 Rpm) resulted in surface roughness values of (1,467 μm, 1,349 μm, 2,079 μm) respectively. For the tool diameter variable (8 mm, 10 mm, 12 mm), the surface roughness values were (1,765 μm, 1,701 μm, 1,429 μm) respectively. Regarding the coolant variable (water, dromus, oil), the surface roughness values were ((1,995 μm, 1,387 μm, 1,541 μm) respectively. The most optimal surface roughness was achieved with a spindle speed of 865 Rpm, resulting in a surface roughness value of 1.349 μm. Similarly, a tool diameter of 12 mm resulted in a surface roughness value of 1.429 μm, and the use of dromus as a coolant resulted in a surface roughness value of 1.387 μm. Keywords: Surface Roughness, Drilling, Aluminum 6061
Analisis Biodiesel Sebagai Aditif Bahan Bakar Diesel Terhadap Kinerja dan Konsumsi Bahan Bakar Mesin Pembangkit Listrik Prasetiyo, Dani Hari Tunggal; Sidartawan, Robertus; Sanata, Andi; Yudhistiro, Danang; Nisak, Rima Zidni Karimatan
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3688

Abstract

Research on the use of biodiesel as renewable energy must continue to be carried out as an effort to reduce dependence on fossil energy. This research method was carried out using biodiesel from used cooking oil as an additive to fossil diesel fuel (dexlite). The fuel was tested on a diesel engine as a power generator accompanied by variations in power loading (load). The composition of biodiesel as an additive was (10, 20 and 30)% of fossil diesel fuel, while the power load used during testing was 100 to 700 watts. Testing was carried out to determine the performance and fuel consumption of a diesel engine as a power generator. The test results showed that the highest effective power value was in the D0 composition with a value of 278.18 watts with a power load of 700 watts, while the highest torque value was in the D0 fuel composition of 2.23 Nm at a power load of 700 watts. The lowest fuel consumption was in the D70BIO30 fuel composition of 114.25 seconds at a power load of 100 watts.
IMPLEMENTASI METODE TOTAL PRODUCTIVE MAINTENANCE (TPM) DALAM MENENTUKAN EFEKTIFITAS STASIUN PENGGILINGAN TEBU Ghaffar, Jakfat Maulid; Arbiantara, Hari; Mulyadi, Santoso; Sanata, Andi; Djumhariyanto, Dwi
STATOR: Jurnal Ilmiah Teknik Mesin Vol 7 No 2 (2024): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

The milling station is a station where sugar cane-based sugar is produced, readiness is needed especially from the point of view of equipment maintenance in order to support the production process. Total Productive Maintenance (TPM) is one method of maintenance approach with Overall Equipment Effectiveness (OEE) is one of the measuring tools in calculating the effectiveness of equipment. Failure Mode and Effect Analysis (FMEA) is one method in analyzing the cause and effect of each device so that later it is hoped that this research can determine the value of the effectiveness of the equipment and provide recommendations for improvements. The calculation of the effectiveness of the equipment at the milling station that the effectiveness values ​​from 2013 to 2017 are 75.87%, 84.17%, 87.58%, 61.53% and 92.59%. In 2013, 2014 and 2016 showed that the value of effectiveness is still below the standards of world class effectiveness values. Factors that influence the effectiveness of 2013 to 2017 are Reduce Speed ​​Losses and Set-up adjustments time. Improvement of recommendations according to the TPM pillar in increasing productivity is 5S (Seiri, Seiso, Seiton, Seiketsu, and Setsuke). Keyword: Total Productive Maintenance (TPM), Overall Equipment Effectiveness (OEE), Failure Mode and Effect Analysis (FMEA).
Characteristics of syngas combustion resulting from coffee husk biomass waste gasification process: Overview of automotive fuel alternatives Sanata, Andi; Sholahuddin, Imam; Nashrullah, Muhammad Dimyati; Nanlohy, Hendry Y.; Panithasan, Mebin Samuel
Mechanical Engineering for Society and Industry Vol 4 No 2 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12590

Abstract

The production of syngas from coffee husk biomass waste as a raw material offers significant potential as an alternative automotive fuel source through the gasification process, considering the abundant resources available. Therefore, this study aimed to characterize the physical properties of the fuel initially, in order to observe the differences in these properties after the fuel underwent Ultra Fine Bubble treatment. The objective was to analyze the combustion characteristics of syngas derived from coffee husk biomass waste, to develop a sustainable alternative to fossil fuels for automotive applications. The results showed that with increasing air discharge, the concentration of CO and H₂ gases in gasified syngas increased while the concentration of CH4 decreased. Additionally, higher air discharge resulted in lower tar content, higher flame temperature, higher flame height visualization, and higher generator power output as a review of the feasibility of alternative automotive fuels.
Comprehensive analysis of tar reduction method in biomass gasification for clean energy production: A Review Prasetiyo, Dani Hari Tunggal; Sanata, Andi; Sholahuddin, Imam; Nashrullah, Muhammad Dimyati; Nanlohy, Hendry Y.; Panithasan, Mebin Samuel
Mechanical Engineering for Society and Industry Vol 4 No 3 (2024): Special Issue on Technology Update 2024
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12712

Abstract

Biomass gasification is a promising renewable energy technology for the production of synthetic gas (syngas), consisting of hydrogen (H₂), carbon monoxide (CO), and methane (CH₄). This technology's primary challenge is tar formation – a heavy hydrocarbon compound that can block equipment, poison catalysts, and deteriorate syngas quality. Therefore, this study aimed to examine different tar reduction methods to support clean energy production through biomass gasification. To achieve this aim, two main approaches were adopted and the first was in-situ, focusing on modifying gasifier design and adjusting operational parameters. The second was ex-situ, which included catalytic reforming, thermal cracking, and plasma technology. The analysis also assessed different catalysts, such as biochar, and dolomite, as well as nickel- and iron-based materials, comparing their efficiency, sustainability, and economic viability. Several key factors influenced tar formation and reduction, namely feedstock type, operating temperature, air ratio, and reactor configuration. The result showed that combining in-situ and ex-situ technologies had substantial potential to significantly reduce tar, improve syngas quality, and optimize system performance. However, some challenges observed were reduced catalyst efficiency, high energy costs, and the need for more sustainable technologies. To improve the performance of gasification systems, this study provided information on catalyst development, operational parameter optimization, and plasma technology integration. Finally, the analysis provided a scientific basis and strategic recommendations to overcome tar problems and encourage the commercial use of biomass gasification towards a clean energy transition.
Co-Authors Adhika Widyaparaga Adhitia Yanuar Pratama Adhitia Yanuar Pratama, Adhitia Yanuar Ahmad Adib Rosadi Ahmad Adib Rosyadi Ahmad Syuhri Alief Muhammad Arianto, Pratama Aris Zainul Muttaqin Ariyo Anindito Aziz, Muhammad Lutfi Cahyadi, Tedi Setiawan Clarissa Putri Sholeha Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Djoko Sungkono Dwi Djumhariyanto Faiz Firdausi Feri Setya Putra Feri Setya Putra, Feri Setya FX Kristianta Gaguk Jatisukamto Gandu Eko Julianto Suyoso Ghaffar, Jakfat Maulid Hari Arbiantara Basuki Hari Arbiantara, Hari Hary Sutjahjono Helen Riupassa Hendry Y. Nanlohy Hery Indria Dwi Puspita Ilminafik, Nasrul Imam Rudi Sugara Imam Sholahuddin Indro Pranoto Intan Hardiatama Jannah, Betriqil Koekoeh KW, Robertoes Kustanto, Muh. Nurkoyim Kustanto, Nurkoyim Listiyadi, Digdo Lukman Hakim M Edoward Ramadhan M Nurkoyim Kustanto Mahros Darsin Masaki Yamaguchi Mochamad Asrofi Moh. Nurkoyim Kustanto Mohammad Hartono Muhammad Akhlis Rizza Muhammad Dimyati Nashrullah Muhammad Katibi Vanhas Muhammad Sholihul Amin Muhammad Trifiananto Nashrullah, M. Dimyati Nasrul Ilminafik Nasrul Ilminnafik Naufal Fardio Albajili Nisak, Rima Zidni Karimatan Panithasan, Mebin Samuel Prabowo Restu Eranio Prayogo Alim Pangestu Puranggo Ganjar Widityo Puspita, Hery Rachmat Subagyo Rahma Rei Sakura Ramadhan, M Edoward Robertus Sidartawan Rozy, M. Fahrur Rudianto Rudianto Rudianto Salahuddin Junus Santoso Mulyadi Satworo Adiwidodo Selcuk Sarikoc Skriptyan Noor HS Solahuddin, Imam Stujanjono, Hary Sukma, Kinanti Wilujeng Sumarji Suyatno Suyatno Suyoso, Gandu Takuya Tomidokoro Trifiananto, Muhammad Trismawati Trismawati Wiyono, Pandu Akbar Iqrofasya Wiyono Yasim, Ahmad Yudhistiro, Danang Yuni Hermawan