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All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering IJIMCE : International Journal of Innovation in Mechanical Construction and Energy

Andre Kurniawan

Universitas Negeri Padang

Author-ID : 2568197

Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Transportation Other

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Articles

Analysis Variations of Riser in Sand Casting for Scrap Aluminum on Hardness Values Zainal Abadi; Andre Kurniawan; Andril Arafat; Nur Ichsan Abdillah; Daffa Raihan Senthot
invotek Vol 21 No 3 (2021): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v21i3.940

Abstract In this study, we will discuss the process of casting used aluminum metal. Used aluminum is one of the industrial wastes that can be converted into products using the casting method. This study aims to obtain a good casting material with good hardness values and minimal defects. The research will focus on the results of castings by analyzing the visuals and hardness values of the specimens. The research design is a pre-experimental type of One-Shot Case Study by conducting treatments whose results will be directly observed and analyzed descriptively. The treatment given is to increase the number of risers in recycled aluminum castings. Variations in the number of risers are 1 riser, 2 riser, and 3 riser. Each variation has 3 specimens, so there are 9 specimens in the study. The data from the test results contained a fairly large porosity value for each riser variation. The hardness value that has been tested using the Rockwell hardness tester obtained the highest hardness value occurs in the 2 riser variation, namely 27.69 HRA and the lowest hardness value occurs in the 3 riser variation, namely 21.56 HRA. Thus, for casting used aluminum with a casting pattern as in this study, it is best to use 2 risers.

Analysis of Power and Efficiency of Cross-flow Turbine Due to Changes in Runner Rotation Lilik Darwito; Hendri Nurdin; Purwantono Purwantono; Andre Kurniawan
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 4 No 1 (2022): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

The Cross-flow turbine is one type of hydroelectric power plant that is frequently used. This is an experimental study with the goal of analyzing the power and efficiency produced by the turbine as a result of runner rotation adjustments. The runner rotation variations used are 261 rpm, 300 rpm, 320 rpm, 340 rpm, 360 rpm, 380 rpm, 392 rpm, and 423 rpm with a head as high as 5 meters and an incoming water discharge of 0.2 m3/s. The best results shown when runner rotate at 423 rpm. It's showed the maximum power 788.85 Watt and best efficiency 80.49%. The power and efficiency produced by a runner are proportional to the rotational speed of the runner; the higher the runner's rotation, the greater the power and efficiency produced. To summarize, the best way to achieve the best turbine performance is to maximize runner rotation. Salah satu jenis pembangkit listrik tenaga air yang sering digunakan adalah turbin tipe Cross-flow. Penelitian ini berupa penelitian eksperimen yang bertujuan untuk menganalisis daya dan efisiensi yang dihasilkan turbin akibat perubahan putaran runner. Variasi putaran runner yang digunakan yaitu 261 rpm, 300 rpm, 320 rpm, 340 rpm, 360 rpm, 380 rpm, 392 rpm, dan 423 rpm dengan head setinggi 5 meter serta debit air yang masuk 0,2 m3/s. Hasil penelitian menunjukkan daya dan efisiensi maksimum didapatkan pada putaran runner 423 rpm yaitu 788,85 Watt dengan efisiensi 80,49%. Terbukti bahwa daya dan efisiensi sebanding dengan kecepatan putaran runner, semakin tinggi putaran runner maka daya dan efisiensi yang dihasilkan juga semakin besar. Dapat disimpulkan, untuk mendapatkan kinerja turbin yang maksimal yaitu dengan memaksimalkan putaran runner.

Number of Machine and Material Requirements for Production Planning of Tablet Tooling with the Demand of 200 Units/Day Nanang Qosim; Andre Kurniawan; Moh. Nasir Hariyanto; Zakki F. Emzain; Moh. Hartono; AM Mufarrih
Journal of Applied Engineering and Technological Science (JAETS) Vol. 2 No. 2 (2021): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Shaping and marketing a product in tablet form is an easy and economical alternative to product shaping. Products in tablet form now cover almost all fields, so that the demand for tablet tooling of various sizes and variations continues to increase. As an effort to support the effectiveness and proper industrial planning, it is necessary to carry out an analysis of the machine and material requirements to produce tablet tooling which is the aim of this study. To achieve these objectives, the methods used in this study include product design, operation plan analysis, and calculation of material requirements and number of machines. The result shows that the number of machine requirements to manufacture the die and punch of tablet tooling with the demand of 200 unit/day are two units of power hacksaw, five units of lathe machine, and a unit of milling machine. On the other hand, the material requirements needed in one day are 22.24 m (Ø45 mm x 5 bars) and 12.79 m (Ø18 mm x 3 bars).

Comparison Lift and Drag of Airfoil NACA 1408 Standard and Modification Using Computational Fluid Dynamic Usin Usin; Yolli Fernanda; Arwizet Karudin; Andre Kurniawan
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 4 No 3 (2022): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

An airfoil is a geometry shape of an aircraft wing designed to produce high lift force and low drag forces. Study on the air flow and pressure around of the airfoil was important step to analysis lift force and drag force. Factor affecting the lift force and drag force airfoil are the geometry and dimensions of the airfoil. This study to discus about the modification airfoil NACA 1408 was performed by adding round tip in leading edge to obtain simulate air flow by varying the angle of attack. The result showed that coefficient of lift (Cl) and coefficient of drag (Cd) was calculated from the simulations, data the highest Cl and Cd were 0.00277 and 0.00025 for the standard airfoil and for modification airfoil were 0.00343 and 0.00064. Based on the test result, the modified airfoil can produce better lift force than the standard shapes for test speed of 20 m/s. Airfoil merupakan bentuk geometri sayap pesawat terbang yang dirancang untuk menghasilkan lift force tinggi dan drag force rendah. Studi tentang aliran udara dan tekanan di sekitar airfoil adalah langkah penting untuk menganalisis lift force dan drag force. Faktor yang mempengaruhi lift force dan drag force airfoil adalah geometri dan dimensi airfoil tersebut. Penelitian ini membahas tentang modifikasi dilakukan pada airfoil NACA 1408 dengan menambahkan ujung bulat pada leading edge dan mendapatkan simulasi aliran udara dengan memvariasikan angle of attack. Hasil penelitian menunjukkan bahwa coefficient of lift dan coefficient of drag dihitung dari simulasi, data coefficient of lift dan coefficient of drag tertinggi adalah 0.00277 dan 0.00025 untuk airfoil standar dan untuk airfoil modifikasi adalah 0.00343 dan 0.00064. Berdasarkan hasil pengujian, airfoil modifikasi dapat menghasilkan lift force lebih baik daripada bentuk standar untuk kecepatan uji 20 m/s.

Analysis of Fluid Flow in Pipeline and Cyclone Systems for Preduster Coal Mill Indarung V Factory Using Flow Simulation Akhmad Rais; Yolli Fernanda; Arwizet K; Andre Kurniawan
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 2 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Cyclone is a tool for selling particulates from fluid streams without a filter. Cyclone in this case is to separate particulates from the air stream so they don't enter the coal mill. This study aims to analyze the effectiveness of the cyclone, pressure drop, and head loss in the system. The particles to be separated from the fluid stream are 9 microns in size. Pipe length for flow distribution is 67.24 m and 7 units of elbows. This analysis uses numerical methods with flow simulation features and compares them with theoretical results. Theoretical results obtained a pressure drop of 4042.74 Pa and a head loss of 607.82 m. This pressure drop is greater than the pressure fan, which is 1333 Pa. The simulation results of the inlet pipe 200 with a pressure drop of 4207.42 Pa, a head loss of 632.58 m, and an efficiency of 43%. At the inlet pipe 100 with a pressure drop of 4146.04 Pa, a head loss of 623.35 m, and an efficiency of 17%. At the inlet pipe 250 with a pressure drop of 4362.61 Pa, a head loss of 655.82 m, and an efficiency of 39%. Best results on pipe inlet 200. Cyclone merupakan alat untuk memisahkan partikulat dari aliran fluida tanpa filter. Cyclone dalam hal ini untuk memisahkan partikulat dari aliran udara supaya tidak masuk ke coal mill. Penelitian ini bertujuan untuk menganalisis efektivitas cyclone, pressure drop, dan head loss pada sistem. Partikel yang akan dipisahkan dari aliran fluida berukuran 9 mikron. Panjang pipa untuk distribusi aliran yaitu 67,24 m dan elbow sebanyak 7 unit. Analisis ini menggunakan metode numerik oleh fitur flow simulation dan membandingkannya dengan hasil teoritis. Hasil teoritis didapatkan pressure drop 4042,74 Pa dan head loss 607,82 m. Pressure drop ini lebih besar dari pressure fan yaitu 1333 Pa. Hasil simulasi inlet pipa 200 dengan pressure drop 4207,42 Pa, head loss 632,58 m, dan efisiensi 43%. Pada inlet pipa 100 dengan pressure drop 4146,04 Pa, head loss 623,35 m, dan efisiensi 17%. Pada inlet pipa 250 dengan pressure drop 4362,61 Pa, head loss 655,82 m, dan efisiensi 39%. Hasil terbaik pada inlet pipa 200.

Pembuatan dan Penyediaan Alat Pengiris Bawang Merah untuk Pengusaha Skala Mikro di Kenagarian Talang Babungo, Kabupaten Solok, Sumatra Barat Anna Niska Fauza; Wanda Afnison; Randi Purnama Putra; Purwantono Purwantono; Andre Kurniawan; Hendri Nurdin
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 7, No 1 (2023)
Publisher : LPPM ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2023.v7i1.3773

Bawang merah merupakan salah satu komoditas pertanian yang banyak dihasilkan di Indonesia. Salah satu daerah dengan hasil panen bawang merah yang cukup tinggi adalah Kenagarian Talang Babungo, Kabupaten Solok, Sumatra Barat. Saat ini, sudah mulai berkembang pengusaha-pengusaha berskala mikro dalam memproduksi makanan olahan bawang merah, yaitu bawang merah goreng. Hal ini telah menjadi salah satu sumber mata pencarian masyarakat di daerah tersebut. Bawang merah goreng menunjukkan potensi yang besar sebagai produk olahan pertanian dengan nilai jual yang tinggi. Selain itu, bawang merah goreng sangat populer di kalangan masyarakat karena keefektifan dan kekhasan cita rasanya. Namun, proses pembuatan bawang merah goreng di Kenagarian Talang Babungo masih dilakukan secara manual dan menggunakan alat sederhana. Sehingga, hal ini mengakibatkan rendahnya produktivitas kerja dan produk yang dihasilkan. Oleh karena itu, Teknik Mesin Universitas Negeri Padang memberikan solusi kepada pengusaha bawang merah dalam kegiatan Pengabdian Kepada Masyarakat. Tim Pengabdian merancang dan menyediakan mesin pengiris bawang merah melalui penggunaan teknologi tepat guna. Mesin pengiris bawang merah dirancang dengan menggunakan teknologi sederhana dan sistem operasional yang mudah digunakan. Mesin pengiris bawang dirancang menggunakan penggerak motor listrik dengan kapasitas produksi yang cukup besar, yaitu 20–30 kg/jam. Selain itu, mesin pengiris bawang merah memiliki keunggulan dalam pengaturan ketebalan pemotongan bawang merah yang dikehendaki. Diharapkan, melalui penyediaan mesin pengiris bawang merah yang inovatif tersebut akan mampu meningkatkan produktivitas kerja pengusaha bawang merah di Kenagarian Talang Babungo dengan estimasi ± 400% peningkatan hasil produksi dibandingkan dengan metode pengirisan secara manual. Hal ini juga akan mendorong peningkatan roda ekonomi dan kesejahteraan masyarakat setempat.

Triglycerides of Crude Palm Oil to Biokerosene: Studies on Electrolysis and Electromagnetic Effect Sri Rizki Putri Primandari; Krismadinata Krismadinata; Dori Yuvenda; Remon Lapisa; Andre Kurniawan; Mulianti Mulianti; Muhammad Djoni Bustan; Sri Haryati; Gusni Sushanti; Tarig Elshaarani; Yus Donald Chaniago
Journal of Applied Engineering and Technological Science (JAETS) Vol. 5 No. 1 (2023): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v5i1.3127

Crude Palm Oil (CPO) is a potential feedstock for biokerosene. However, it is problematic when used directly because it is gummy, has a high viscosity and is degradable. Various conversion processes have been conducted that directly convert CPO into biokerosene, but it requires high temperature and pressure. Therefore, as a novelty, this study aims to develop the technology for converting triglycerides into biokerosene under relatively low operating conditions and producing similar petroleum kerosene by electrolysis-assisted and electromagnetic induction. In this study, the conversion technology process was conducted in three steps (i) converting triglycerides to Free Fatty Acids (FFA), (ii) converting FFA to alkanes, and (iii) converting alkanes to biokerosene. Step (ii) is assisted by the electrolysis process, meanwhile, step (iii) is assisted by electromagnetic irradiation. The finding showed that electrolysis obtained 73.47% yield of alkanes and electromagnetic irradiation obtained 78.02% yield of biokerosene. Biokerosene is almost close to kerosene-based petroleum in terms of colour Saybolt, flash point and Net Heating Value. The findings of this study may provide an alternate technology approach for biokerosene synthesis and solution kerosene scarcity.

Effect of Using a Solar Can Heater Collector on the Temperature of a Room at Several External Temperature Variations Willy Vernando; Andre Kurniawan; Refdinal Refdinal; Yolli Fernanda
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 5 No 3 (2023): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v5i3.281

This research discusses a heating collector device which functions to warm a room that has a relatively cold temperature so as to create thermal comfort. Thermal comfort greatly influences human performance in activities in a room so that effective performance in a room can be achieved. This collector functions to collect solar heat and increase the temperature of the sun's heat which will then be channeled into a closed room. This collector is in the form of a box measuring 750x450 mm. This collector consists of cans arranged vertically which are useful as a medium for capturing heat and increasing solar heat. The measurement results show that the room heater can warm a cold room at a temperature of 22.4⁰C to 28.2⁰C. and the air heating capacity obtained is 0.24 kJ to 4.58 kJ. Penelitian ini membahas tentang alat kolektor pemanas yang berfungsi untuk menghangatkan ruangan yang memiliki suhu relatif dingin sehingga terciptanya kenyamanan termal. Kenyamanan termal sangat berpengaruh terhadap kinerja manusia dalam beraktifitas di dalam suatu ruangan sehingga dapat tercapai efektifitas kinerja di dalam suatu ruangan. Kolektor ini berfungsi mengumpulkan panas matahari serta memperbesar suhu dari panas matahari yang nantinya akan di alirkan ke suatu ruangan yang tertutup. Kolektor ini berbentuk boks yang berukuran 750x450 mm,kolektor ini terdiri dari kaleng yang disusun secara vertical yang berguna untuk media penangkap panas dan memperbesar panas matahari. Hasil pengukuran menunjukkan bahwa pemanas ruangan dapat menghangatkan ruangan yang dingin pada suhu 22,4⁰C menjadi 28,2⁰C. dan kapasitas pemanas udara yang diperoleh adalah 0,24 kj hingga 4,58 kj.

Comparative Analysis of Energy Efficiency Measurement in Building with Manual Calculation and RETScreen Expert Andika Saputra; Andre Kurniawan; Yolli Fernanda; Arwizet Karudin; Shabir Ahmed
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 1 No. 2 (2024): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v1i2.27

Energy efficiency is a crucial aspect of energy saving efforts. Energy efficiency is an important factor in reducing energy consumption and environmental impacts. One of the important steps that can be taken in achieving energy efficiency is to conduct an energy audit. An energy audit is a systematic process to evaluate energy use in a building and identify energy saving opportunities that can be done. RETSCreen Expert is one of the software that can be used for energy audits. This research focuses on analyzing the comparison between manual calculations and calculations using RETScreen Expert software on building energy efficiency. The factors used to analyze energy efficiency are air conditioning systems, room lighting systems, and the use of other electronic devices, over a one-year period. The analysis results show that there are differences in calculations between the use of manual methods and RETScreen Expert. The difference between manual calculation and RETScreen Expert is 15.42%. With this difference, it is assumed that manual calculations and calculations using RETScreen Expert do not have too much difference. The results of the energy audit also show that the air conditioning system (HVAC) is a major contributor to the building's energy consumption.

Calorific Value of Palm Kernel Shell Charcoal (PKSC) Briquette as Solid Fuel Hendri Nurdin; Waskito Waskito; Fadhilah Fadhilah; Toto Sugiarto; Andre Kurniawan; Yolli Fernanda; Rudy Anarta; Fathi Aulia DZ
Journal of Applied Engineering and Technological Science (JAETS) Vol. 6 No. 2 (2025): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v6i2.6336

The need and utilization of energy in society exceed available production. This condition requires acceleration and efforts to find solutions through the diversification of palm shell biomass into solid fuel briquettes. Palm shells have the potential as biomass and renewable energy sources that are selected based on strategic, technical, and environmental considerations. Its utilization so far has only been burned directly which causes air pollution or used as road paving in oil palm plantations. The environmental impact is the accumulation of solid waste, and global warming in the Crude Palm Oil processing industry. The research objective was to obtain the calorific value of palm kernel shell briquettes with carbonization process. The experimental research method carried out by innovating palm kernel shell briquette raw materials at various percentage variances (90%: 10%, 85%: 15%, 80%: 20%, 75%: 25%) using tapioca adhesive. The technical parameters of briquettes making are molding pressure of 10 MPa, particle grains of 60 mesh, carbonization temperature of 400oC; 450oC; 500oC with a holding time of 1 hour. From this study, the calorific value of palm kernel shell charcoal (PKSC) briquettes at a concentration of 85%;15% at a temperature of 400oC was 25.86 MJ/kg with tapioca adhesives as the highest calorific value parameters. The technology used to make palm kernel shell charcoal briquettes is a potential development that can be recommended as a precursor to solid fuels. The impact of developing PKSC biomass energy briquettes is an innovation in utilizing waste to create solid fuels. The implications of this research can be applied by home industries or households. This research is a contribution to solutions in overcoming energy needs and deficiencies as a form of sustainable energy..

Co-Authors Akhmad Rais AM Mufarrih Andika Saputra Arafat, Andril Arwizet Arwizet, Arwizet Daffa Raihan Senthot Dori Yuvenda Fadhilah Fadhilah Fathi Aulia DZ Fauza, Anna Niska Gusni Sushanti Krismadinata Krismadinata, Krismadinata Lilik Darwito Moh. Nasir Hariyanto Muhammad Djoni Bustan Mulianti Nanang Qosim Nur Ichsan Abdillah Nurdin Hendri Purwantono Purwantono Putra, Randi Purnama Refdinal, Refdinal Remon Lapisa Rudy Anarta Shabir Ahmed Sri Haryati Sri Rizki Putri Primandari Tarig Elshaarani Toto Sugiarto Usin Usin Wanda Afnison Waskito Willy Vernando Yolli Fernanda Yolli Fernanda Yus Donald Chaniago Zainal Abadi Zakki Fuadi Emzain

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