R.E.M. (Rekayasa Energi Manufaktur) Jurnal
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154 research outputs found
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Variations in Nozzle Diameter and Valve Opening on Pelton Turbine Torque and Power: Variasi Diameter Nozzle dan Bukaan Katup Terhadap Torsi dan Daya Turbin Pelton
No full textTurbin Mikrohidro adalah sebutan yang dipakai alat konversi energi air menjadi putaran poros yang dapat dimanfaatkan untuk instalasi generator listrik.. Suatu desain mikrohidro membutuhkan dua hal, debit air serta ketinggian jatuh (head) berguna untuk menciptakan daya yang bisa digunakan. Pada riset ini memakai turbin air dengan jenis Pelton, diseleksi turbin itu sebab sesuai diaplikasikan pada head yang cukup tinggi. Saat sebelum diaplikasikan butuh terdapatnya pengetesan dengan prototipe agar mengenali seberapa besar jumlah putaran yang diperoleh. Tujuan dari riset itu digunakan untuk mengenali pengaruh variasi diameter nozzle dan tekanan air terhadap daya dan efesiensi turbin. Turbin yang diuji mempunyai nilai efisiensi sebesar 15,7%. Dan didapatkan bahwa semakin kecil diameter nosel maka tekanan air pada turbin akan semakin meningkat dan daya pada turbin akan semakin besar. Daya maksimum turbin dicapai pada 7,02 watt
Prototype Energy Saving Car Chassis Design and Analysis Using 6061 Aluminum Material : Perancangan Desain dan Analisa Chassis Mobil Hemat Energi Tipe Prototype dengan Material Aluminium 6061
No full textThe chassis is an important component car which functions to support the load on the vehicle and has a strong construction. The chassis, as the main support for all vehicle componentsy. Increased fuel use and rising global crude oil prices have encouraged research into energy saving cars with special designs that can reduce fuel consumption and pollutant emissions. The design process with variations in rollbar shape and variations in cross sectional shape with 6061 aluminum material using Autodesk Inventor 2024 software. After the design process is complete, stress analysis test stage is carried out to obtain analysis data, namely von misses stress, strain, displacement, safety factor. The results of the chassis design using concept B with a pipe cross-sectional shape and rollbar fillet model are more recommended, because it has better von Mises stress value and a better safety factor, besides that the concept B chassis design is easier in the assembly process with prototype type energy efficient car body
Evaluation of AUG-WID-R01 Spring Test Equipment: Evaluasi Alat Uji Pegas AUG-WID-R01
No full textSepeda Motor Sesuai fungsinya sebagai alat transportasi ringan kendaraan bermotor harus memenuhi standar desain keselamatan dan keamanan bagi penggunanya, shock absorber merupakan komponen yang didesain untuk meredam getaran akibat guncangan. Tujuan dari penelitian ini adalah (1) menghitung nilai koefisien pegas pada sepeda motor (2) menghitung simpanan hasil perhitungan dan pengujian. Dalam penelitian ini menggunakan metode Desain Eksperimen yaitu melakukan pengujian untuk mendapatkan data selanjutnya mengolahnya menggunakan teori getaran bebas, dan mengitung nilai k & simpangan menggunakan teori. Dari hasil penelitian dan analisis yang dilakukan dapat diperoleh karakteristik pengaruh getaran. Berdasarkan hasil perhitungan, nilai k pada pegas diperkirakan sebesar ± 18 KN/m dan simpangan maksimum ± 12 cm. (2) Berdasarkan hasil pengujian nilai k pada pegas dihasilkan ± 24,6 KN/m dan simpangan maksimum ± 4,0 c
Analysis and Modeling of Wheel-Based Floating Energy Generation Technology: Analisis dan Pemodelan Teknologi Pembangkit Energi Terapung Berbasis Kincir
No full textThis research aims to analyze and model wheel-based floating energy generation technology. The current energy crisis requires us to look for sustainable solutions to meet energy needs. The Indonesian government has targeted renewable energy use of 23% by 2025, especially in remote areas. One solution to overcome this challenge is energy storage technology. Energy storage using floating technology is an innovative solution that is being developed. In this research, we analyze the design of a floating energy wheel with a capacity of 110 kW as an alternative source of electrical energy. Wheel energy is produced from a combination of buoyancy energy and energy originating from the weight of water which is produced by the difference in fluid density in the water and air environments. The research results show that this floating energy wheel can produce a torque of 7710,62 Nm and a power of 113,83 kW, showing great potential in renewable energy storage applications. Wheel-based floating energy generation technology has the potential to be an innovative solution in renewable energy storage. Further research needs to be carried out on a larger scale and field tests to validate the potential and efficiency of this technology in the real worl
Analysis of Water Distribution in Building A in Widyatama University Environment: Analisis Distribusi Air Gedung A di Lingkungan Universitas Widyatama
No full textThe need for clean water increases every year, while the means to provide clean water require planning. The importance of water in the realm of education is comparable to that of household needs. Water on the 3rd and 4th floors of Building A often doesn't flow. The aim of this research is to identify the root cause of the insufficient water flow on the 3rd and 4th floors of Widyatama University Building A, and to devise a solution for the water flow distribution system. The research employs a variety of methods, including literature review, data collection, data analysis, results analysis, and interpretation. The conclusion is that the water drainage on the 3rd and 4th floors is 0.612 L/s and 0.510 L/s, which is below the standard (0.9–2 L/s). The drainage of water in the main pipe was uncertain based on its diameter. The solution to this problem is to install booster pumps on the 3rd and 4th floors. The next solution is to change the main pipe diameter to 1 1⁄4"
Effect of Co-firing Using Biomass Variation to Maintain Biomass Feedstock in Coal-Fired Power Plants: Pengaruh Cofiring Menggunakan Variasi Biomassa untuk Menjaga Feedstock Biomassa di Pembangkit Listrik Tenaga Uap Batubara
No full textPembakaran bahan bakar batubara pada pembangkit listrik secara signifikan menyumbang emisi karbon dioksida (CO2), yang berperan dalam pemanasan global dan perubahan iklim. Metode co-firing digunakan di Pembangkit Listrik Tenaga Uap (PLTU) sebagai strategi untuk mengurangi ketergantungan pada batubara sebagai sumber energi utama. Masih diperlukan identifikasi lebih lanjut mengenai potensi penerapan co-firing biomassa dalam skala yang lebih luas dan untuk jangka waktu yang lebih panjang. Penelitian ini bertujuan untuk mengevaluasi berbagai jenis biomassa sebagai bahan bakar co-firing dari segi performance, emisi, dan biaya dengan cara uji laboratorium dan uji bakar langsung. Biomassa yang dipakai adalah sawdust, sekam padi, cocopeat, dan Bahan Bakar Jumputan Padat (BBJP). Hasil dari pengujian didapatkan bahwa seluruh biomassa yang diuji masih aman pada segi performance, serta menurunkan emisi gas buang, dan menghemat Biaya Pokok Produksi (BPP)
Emissions of carbon dioxide (CO2) resulting from the burning of coal fuel in power plants are a major contributor to global warming and climate change. Co-firing is employed in Coal-Fired Power Plants (CFPP) as a precautionary measure to decrease reliance on coal as the predominant energy source. The possible deployment of biomass co-firing on a bigger scale and for the long term still requires more identification. Through laboratory testing and direct combustion tests, this project intends to assess the performance, emissions, and costs of several types of biomass as co-firing fuel. Seedust, rice husks, cocopeat, and Solid Refuse Fuel (SRF) are among the biomass materials used. All biomass kinds evaluated were found to be safe in terms of performance, reduce exhaust gas emissions, and lower Basic Production Costs (BPP), according to the test report.
 
Effect of Adding Load on Solar Powered Thermoelectric Cooling Systems: Pengaruh Penambahan Beban pada Sistem Pendingin Termoelektrik Bertenaga Surya
No full textSalah satu potensi energi terbarukan yang semakin populer penggunaanya adalah modul surya. Dalam upaya memanfaatkan energi surya dapat digunakan pada perangkat termoelektrik. Modul pendingin termoelektrik dimanfaatkan untuk kotak pendingin yang dapat menyimpan aneka makanan dan minuman. Penelitian ini bertujuan untuk mendapatkan temperatur terendah yang dicapai beban pendingin objek berupa air kemasan 600 ml dengan menggunakan modul TEC1-12706. Pengujian dilakukan pada kotak pendingin tanpa beban dan pakai beban selama tiga hari dimulai pukul 09.00 hingga pukul 14.00 WIB. Parameter yang diukur adalah intesitas cahaya, kecepatan angin, temperatur modul surya, temperatur lingkungan, temperatur dinding luar kotak, temperatur termoelektrik, temperatur ruang pendingin, temperatur air kemasan 600 ml, tegangan, dan arus. Hasil pengujian dicapai temperatur terendah pada hari ketiga dengan temperatur ruang pendingin pakai beban sebesar 20,1℃, 18,6℃ tanpa beban, dan temperatur akhir air sebesar 20,7℃. Koefisien kinerja sistem pendingin pakai beban pendinginan diperoleh sebesar 1,305 dan tanpa beban pendinginan sebesar 1,572
The Effect of Motorcycle Wheels (Original Equipment Manufacturer) Reconditioning Process on Mechanical Properties and Microstructure
Full text linkWheels are an essential component of a vehicle. Material damage or failure on casting wheel-type wheels is primarily because these wheels receive a reasonably hard impact load due to uneven road conditions or potholes. This condition makes the wheels unable to function normally, and components must be replaced. Given the relatively high cost of replacing wheels, several options are offered to vehicle owners (consumers) to have their wheels reconditioned. This study aims to analyze the effect of the reconditioning process on the mechanical properties and microstructure of the casting wheel material. The sample material is taken from the Original Equipment Manufacturer (OEM) wheel casting wheel in the Disk section for impact testing, Rim for hardness, and microstructure tests. The results are that the reconditioning process affects the mechanical properties and microstructure of the original equipment manufacturer (OEM) alloy wheel material. The decrease in hardness value was 68.86 HBW to 61.59 HBW from the conditions before and after reconditioning. The impact test results where the impact energy absorption is greater after reconditioning is 29.24 J, and the average impact value for wheel specimens after reconditioning is 0.2902 J/mm2. The impact energy value before reconditioning is 7.87 J, and the average impact value is 0.0973 J/mm2. The microstructure obtained is hypereutectic, and the reconditioning process has little effect on the dendritic structure
Analysis of the Effects of Variable Food Packaging Seals on Tensile Test Results for PET, LDPE, and Aluminum Foil Composite Materials
Full text linkThis article features experimental findings on the tensile testing procedure conducted on package seals made from Polyethylene Terephthalate (PET)-Low-Density Polyethylene (LDPE)-Aluminum Foil composite materials commonly employed in food packaging applications. This study aims to ascertain the outcomes of the tensile test or tensile strength of the packaging seal utilizing the Auto Tensile Tester XLW according to the ASTM F88 standards. The tensile test involves using two types of variables: independent variables and dependent variables. The study used temperature (°C) and holding time (s) as independent factors, whereas the dependent variable is the tensile test results or tensile strength (N/mm2). This study utilized identical parameters for each variable. The specimen's measurements were 15mm x 25mm. This experiment included three temperature factors and a constant holding time of 1 second. Every parameter underwent four tests, resulting in twelve test samples. Based on the findings, the optimal temperature range for achieving the most efficient packing sealing was 135oC. The maximum sealing strength of 17.50 N/mm2 was attained within this temperature range, and the outcomes were influenced by both the temperature and the duration of the holding period. Each sample has distinct values, encompassing a rather narrow range
Thermodynamic Analysis of Hydrogen Production from Hydrogen Sulfide in Geothermal Power Plant by using Fe-Cl Hybrid Indirect Electrolysis
Full text linkClean and sustainable energy sources are needed to meet global energy demand. Geothermal Power Plants (GPPs) may generate power from Earth's heat. However, GPPs release hazardous hydrogen sulfide (H2S) gas. To overcome this problem and maximize on resource potential, researchers have investigated converting GPP-emitted H2S into hydrogen (H2). The Fe-Cl hybrid indirect electrolysis technique is used to analyze the thermodynamics of hydrogen synthesis from H2S in GPPs. Electrolysis electricity, hydrogen generation rate, and electrolyzer energy and exergy efficiency are examined in the thermodynamic analysis. The foundation parameters show that the electrolysis process uses 20.57 kWh of power every kilogram of H2 generated. Energy and exergy efficiencies of the electrolyzer are 89.89% and 97.72%, respectively, exhibiting system efficiency. The research also examines how H2S mass flow rate and electrolysis temperature affect energy efficiency, exergy efficiency, and power consumption. Optimizing hydrogen generation and system performance requires these elements. This study analyzes the thermodynamics of hydrogen synthesis from H2S in GPPs to create sustainable and ecologically friendly energy options. H2S emissions from GPPs might be used to efficiently produce hydrogen as a renewable energy source with more research