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All Journal Rekayasa Mesin Jurnal Teknik Mesin Indonesia Accurate: Journal of Mechanical Engineering and Science Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Rany Puspita Dewi
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Analisis karakteristik briket arang serbuk gergaji dan tempurung kelapa Rany Puspita Dewi; Trisma Jaya Saputra; Sigit Joko Purnomo
Jurnal Teknik Mesin Indonesia Vol 17 No 1 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i1.272

Abstract

Pemanfaatan biomassa untuk mengurangi ketergantungan terhadap bahan bakar fosil dapat dilakukan melalui teknologi pembriketan. Kualitas briket dipengaruhi oleh beberapa faktor, salah satunya adalah ukuran partikel serbuk arang. Serbuk gergaji dan limbah tempurung kelapa merupakan sumber biomassa yang menjanjikan. Kajian yang dilakukan bertujuan untuk mengetahui pengaruh variasi ukuran partikel serbuk arang terhadap karakteristik briket yang meliputi kadar air dan kadar abu. Kajian menggunakan ukuran partikel serbuk arang 10 mesh, 20 mesh, dan 40 mesh. Hasil pengujian menunjukkan bahwa briket arang yang dihasilkan memiliki rata-rata kadar air 5,571% dan rata-rata kadar abu 1,994% pada ukuran partikel 10 mesh. Pada ukuran partikel 20 mesh menghasilkan briket dengan rata-rata kadar air 5,598% dan rata-rata kadar abu 2,573%. Sedangkan pada ukuran partikel 40 mesh menghasilkan briket dengan rata-rata kadar air 5,461% dan rata-rata kadar abu 4,762%. Ukuran partikel serbuk arang tidak berpengaruh terlalu signifikan terhadap kadar air, tetapi memiliki pengaruh signifikan terhadap kadar abu. Hal ini dapat dilihat dari kenaikan kadar abu hingga mencapai 0,5-2% untuk masing-masing variasi ukuran partikel serbuk arang.
ANALISIS KINERJA KOMPOR GAS BERBAHAN BAKAR DIMETHYL ETHER DENGAN VARIASI DIAMETER LUBANG ANGIN PADA NOSEL Sutrisno, Seno; Sigit Iswahyudi; Rany Puspita Dewi
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.v15i2.1662

Abstract

The use of a vent on a gas stove affects the mixing of air with fuel. This study examines the effect of different vent diameters on the performance of Dimethyl Ether (DME) gas-fueled stoves. A nozzle with variations in vent diameter of 3 mm, 2 mm, 1 mm, and no vent with a nozzle diameter of 0.96 mm at each vent. Installed on the fuel ignition system, the flame, heat intake, and combustion efficiency were tested. From the test results at a pressure of 280 mmH2O, the highest flame noise value after shutdown was obtained at the nozzle with a 1 mm vent which amounted to 64.2 dB, the highest heat intake value at the nozzle with a 1 mm vent which amounted to 1.6625 kW, and the highest efficiency value at the nozzle with a 3 mm vent which amounted to 59.135%.
PENGARUH PENAMBAHAN LIMBAH KULIT PINUS TERHADAP HASIL PIROLISIS LIMBAH PLASTIK HDPE SEBAGAI BAHAN BAKAR ALTERNATIF Sigit Mujiarto; Rany Puspita Dewi; Ali Suhadla
Accurate: Journal of Mechanical Engineering and Science Vol. 5 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v5i1.2340

Abstract

Waste often becomes a problem for society. Pyrolysis is considered an effective solution to reduce waste and can produce end products that can be utilized as energy sources. This study uses HDPE plastic waste with variations in the addition of pine bark waste at 0%, 25%, 50%, and 75%, with a total mass of 500 grams and the addition of 100 grams of bentonite catalyst. The pyrolysis process is carried out for 120 minutes at a temperature of 320°C. The aim is to examine the effect of adding pine bark on the pyrolysis oil yield of HDPE plastic as an alternative fuel using parameters of fuel physical characteristics, including density, viscosity, and calorific value. The best results show that the variations of adding 50% and 75% pine bark waste have physical characteristics equivalent to B20 and B30 fuels, with density, viscosity, and calorific values of 0.8307 g/ml, 2.341 cSt, and 10,644.894 cal/g for the 50% pine bark variation, and 0.8367 g/ml, 2.467 cSt, and 10,491.863 cal/g for the 75% pine bark variation, respectively.
Analisis Variasi Perbandingan Diameter Pulley terhadap Efisiensi pada Pembangkit Listrik Tenaga Mikro Hidro (Pltmh) dengan Turbin Archimedes Screw Muhammad Lintang Saputra; Trisma Jaya Saputra; Rany Puspita Dewi
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 3 No. 4 (2024): Desember : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v3i4.4376

Abstract

Renewable Energy Sources (NRE) must be used properly, as an effort to reduce the energy crisis and the impact of pollution. One of them is by developing Micro Hydro Power Plants (PLTMH). The type of turbine that has the potential to make PLTMH on rivers in Indonesia is a screw turbine. The purpose of this study is to find out the performance of PLTMH with a screw turbine using variations in pulley diameter ratios, namely 1:1, 3:2, 2:1, and 3:1. The results of this study show that the ratio of pulley diameter affects the performance of PLTMH in generating electrical power. The results obtained by the diameter ratio of 2:1 get maximum performance on each load on the generator with the generator power produced. The lowest results were obtained at a 1:1 diameter ratio variation on each load on the generator.
Penerapan Mesin Spinner dan Pendampingan Pengemasan Produk Makanan Pothil Di Desa Mejing, Kecamatan Candimulyo Kabupaten Magelang Rany Puspita Dewi; Trisma Jaya Saputra; Nurhadi, Nurhadi; Sigit Joko Purnomo; Herru Santosa Budiono
PaKMas: Jurnal Pengabdian Kepada Masyarakat Vol 5 No 1 (2025): Mei 2025
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/pakmas.v5i1.3368

Abstract

UD Barokah, produces traditional food “pothil”, is located in Mejing Village, Candimulyo District, Magelang Regency, is approximately 7 km from Tidar University. It produces pothil up to 50 kg/day with a selling price of IDR 70,000/kg. The pothil production process, from preparing ingredients to packaging, is still done manually. The processes that are still done manually are the process of draining the oil and the packaging process which still uses large clear plastic about 5 kg. The packaging also did not include a product label. The aim of this activity is to aid the Mejing Village community in the process of preserving and packaging pothil products.  Through this assistance, it is hoped that it will be able to increase the sales reach of pothil products to the general public in areas outside the Magelang Regency. The activity was carried out in two stages, the first stage was observation with discussion with partners and the second stage, problem solving by assisting in the process of preserving and packaging pothil products. The output of this activity is to improve the quality and sales capacity of Mejing Village pothil products and expand the marketing reach of pothil products.
Co-Authors Ali Suhadla Herru Santosa Budiono Muhammad Lintang Saputra Nurhadi Sigit Iswahyudi Sigit Joko Purnomo Sigit Mujiarto Sutrisno, Seno Trisma Jaya Saputra