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All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Prosiding Seminar Nasional Teknoka Sinar Sang Surya: Jurnal Pusat Pengabdian kepada Masyarakat Jurnal Rekayasa, Teknologi, dan Sains ARMATUR : Artikel Teknik Mesin dan Manufaktur
Untung Surya Dharma, Untung Surya
Universitas Muhammadiyah Metro
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Physics

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PENGARUH PENAMBAHAN RADIUS PADA KECEPATAN DAN FREKUENSI SLUG DI DAERAH DOWNSTREAM T-JUNCTION MINICHANNEL Hananto, Leila Hanjani; Indarto; Untung Surya Dharma; Deendarlianto
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.v15i2.1586

Abstract

Multiphase flow channel is commonly applied in various industrial contexts, including lab-on-a-chip, nuclear power plants, microelectronics cooling systems, and chemical microreactors. Equipment ranging from mini to micro sizes plays a vital role in enhancing heat and mass transfer processes during the mixing of two or more phases. Non-uniform phase distribution during the passage of a two-phase flow through a T-junction can cause performance issues in the downstream region. A problem arising from the use of T-junctions is the occurrence of slugs. An experimental study was conducted to investigate the effect of varying bend radius on the flow characteristics in the downstream region of a T-junction minichannel, such as slug velocity and frequency. The slug velocity was researched in the downstream region of the horizontal minichannel T-junction. The working fluid used was air as the gas phase and water. The findings indicate that there is a linear relationship between the superficial velocities of air and water and the corresponding slug velocity in the downstream area of the horizontal minichannel T-junction, as observed through the utilization of a high-speed camera and MATLAB program for image processing. It has been observed that the local velocity within the channel increases as the corner radii increase towards the downstream region.
Uji Eksperimental Pengaruh Campuran Etanol dan Solar Terhadap Daya Indicator dan Emisi Gas Buang Mesin Genset KW 20-388 Tri mahyudi, Erik; Dharma, Untung Surya; Irawan, Dwi
Jurnal Rekayasa Teknologi dan sains Vol 10, No 1 (2026): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v10i1.23204

Abstract

ABSTRAK Tujuan penelitian ini adalah untuk membandingkan prestasi dan emisi gas buang dari mesin diesel berbahan bakar solar yang telah dicampur etanol. Perbandingan campuran bahan bakar menggunakan enam variasi, mulai dari solar murni, campuran solar dengan etanol sebanyak 5% yang kemudian kami  sebut dengan E5, E7.5, E10, E12.5, E15. Hasil pengujian menunjukkan campuran solar dengan etanol 5% menghasilkan daya indikator rata-rata terbesar diantara variasi yang lain 7.48 kW. Sedangkan pada pengujian emisi gas buang didapatkan hasil variasi campuran solar dengan etanol 5 % menghasilkan opacity terendah diantara variasi yang lain sebesar 16.1% Kata kunci: etanol, solar, emisi gas buang ABSTRACT The aim of this research is to compare the performance and exhaust emissions of diesel engines using diesel fuel mixed with ethanol. The fuel mixture comparison uses six variations, starting from pure diesel, a mixture of diesel with 5% ethanol which we then call E5, E7.5, E10, E12.5, E15. The test results show that the mixture of diesel with 5% ethanol produces the largest average power indicator among the other variations, 7.48 kW. Meanwhile, in the exhaust emission test, the results obtained from the variation of the mixture of diesel with 5% ethanol produce the lowest opacity among the other variations, at 16.1% Keywords: etanol, solar, exhaust gas emission
ANALISA KARAKTERISTIK MINYAK PLASTIK HASIL DUA KALI PROSES PIROLISIS Dharma, Untung Surya; Irawan, Dwi
TURBO [Tulisan Riset Berbasis Online] Vol 4, No 1 (2015): Juni 2015
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v4i1.645

Abstract

Limbah plastik dapat gacorwin dimanfaatkan sebagai bahan baku minyak plastik dengan menggunakan proses pirolisis. Minyak plastik yang dihasilkan dapat dimanfaatkan sebagai zat aditif atau campuran bahan bakar pada mesin. Pada Penelitian ini, proses pembuatan minyak plastik menggunakan dua kali proses pirolisis. Suhu reaktor pada proses pirolisis yang pertama dan kedua berbeda berturut-turut yaitu 200 oC dan 150 oC. Dari hasil penelitian ini diketahui bahwa pada proses pirolisis pertama dengan suhu reaktor 200 oC, dari 25 kg bahan baku menghasilkan 15,5 liter minyak plastik dalam waktu 80 jam. Sedangkan pada proses pirolisis kedua dengan suhu reaktor 150 oC, dari 15 liter minyak plastik dari hasil proses pirolisis pertama menghasilkan 11,6 liter minyak plastik dalam waktu 3,33 Jam. Adapun karakter minyak plastik yang dihasilkan adalah massa jenis 771,4 kg/m3, Viskositas 0,501 m2/s dan Nilai kalor 10518 kJ/kgKata kunci : Minyak Plastik, Proses Dua Kali Pirolisis, Karakteristik Minyak Plastik
Co-Authors Agus Setiawan Ahmad Nuryanto Andriyansyah, Nopri Arif Permadi Asroni Asroni Chika Setyadi Cipta Gani Segara Deendarlianto Dwi Irawan Dwi Irawan EKO BUDIYANTO Eko Nugroho Eko Nugroho Eko Nugroho Galih Prasetyo Hamim Bustomi Hananto, Leila Hanjani Indarto Kemas Ridhuan Kemas Ridhuan, Kemas Kristian, Latif Kurniawan, Sodik Lukito Dwi Yuono M Fatkurahman Mafruddin Mafruddin Masherni Masherni Nurlaila Rajabiah riswanto riswanto Setiawan, Rahmady Susilo, Efendi Joko Suyoko, Muhammad Tri mahyudi, Erik Wahyudi, Totong Heru Widodo, Gilang Destya yanto, Repki Yasir Thalabi