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All Journal Jurnal Mechanical Media Mesin: Majalah Teknik Mesin Turbo : Jurnal Program Studi Teknik Mesin Jurnal Pengabdian Pada Masyarakat Prosiding Seminar Nasional Teknoka Jurnal Teknik Mesin Indonesia Journal of Engineering and Scientific Research (JESR) Sinar Sang Surya: Jurnal Pusat Pengabdian kepada Masyarakat Jurnal Otoranpur Jurnal Rekayasa, Teknologi, dan Sains ARMATUR : Artikel Teknik Mesin dan Manufaktur Asean Journal of Science and Engineering (AJSE) Mechanical Engineering for Society and Industry Jurnal Polimesin
Dwi Irawan
Program Studi Teknik Mesin, Universitas Muhammadiyah Metro
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

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Analisis DSSC menggunakan mulberry powder dan buah naga sebagai fotosensitizer Nurlaila Rajabiah; Dwi Irawan
TURBO [Tulisan Riset Berbasis Online] Vol 11 No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2348

Abstract

Fabrication prototype of DSSC (Dye-Sensitized Solar Cell) using mulberry powder from mulberry leaf extract (Morus Alba L.) and dragon fruit (Hylocereus Polyrhizus) as photosensitizers has been carried out. The test was carried out by testing the I-V characteristics at a light distance of 10, 20 and 30 cm from the material sample. The test results show that the chlorophyll of mulberry and dragon fruit is capable of producing an electric current which is a characteristic of the resistance of organic materials. In DSSC with mulberry powder dye, the greatest power was found at a halogen lamp distance of 10 cm with a power of 257.77 mW. Whereas in DSSC with red dragon fruit flesh dye, the greatest power was obtained at 162.35 mW with the halogen lamp distance from the DSSC device being 10 cm. DSSC testing using mulberry powder and dragon fruit showed that the power produced on mulberry powder leaves was higher than dragon fruit. The results of the I-V characteristic test on the DSSC device show a linear graph.
Analisis Dinamika Fluida Terhadap Kinerja Turbin Cross-flow Akibat Perubahan Profil Sudu dan Debit Air pada Head Rendah mafruddin mafruddin; Sulis Dri Handono; Dwi Irawan; Adi Cahyono
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 1 (2026): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i1.4627

Abstract

Kinerja yang optimal dalam berbagai kondisi kerja menjadikan turbin Cross-flow sebagai pilihan turbin impuls terbaik berdasarkan putaran, torsi dan daya turbin. Dimanika aliran didalam turbin berkaitan dengan kinerja turbin, dinama profil sudu memiliki peran penting dalam pemanfaatan momentum fluida, distribusi aliran dan ekstraksi energi air menjadi energi mekanik turbin. Penelitian ini bertujuan untuk menganalisis perbedaan profil sudu dan debit air terhadap karakter aliran didalam turbin dan dampaknya terhadap kinerja turbin. Penelitian eksperimental dilakukan dengan spesifikasi turbin yaitu diameter dalam runner 100 mm, diameter luar runner 150 mm, tebal nosel 30 mm, jumlah sudu 18 dan jari-jari sudu runner 24.4 mm. Pengujian turbin dilakukan dengan variasi profil sudu dan debit air pada head rendah yaitu 0.82 m. Hasil penelitian disimpulkan bahwa profil sudu dan debit air memiliki dampak yang signifikan terhadap karakter aliran dan kinerja turbin Cross-flow. Profil sudu yang optimal menghasilkan aliran yang terdistribusi seragam, ekstraksi energi yang efektif sehingga meningkatkan kinerja turbin. Debit air yang semakin besar meningkatkan volume dan kecepatan air sehingga memaksimalkan momentum dan meningkatkan kinerja turbin.   Kinerja turbin terbaik diperoleh dengan sudu profil A pada debit air 120 LPM.
Uji Eksperimental Pengaruh Campuran Etanol dan Solar Terhadap Daya Indicator dan Emisi Gas Buang Mesin Genset KW 20-388 Erik Tri mahyudi; Untung Surya Dharma; Dwi Irawan
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
Enhancing pyrolysis oil yield and quality via low-temperature catalytic pyrolysis of pet waste over activated carbon derived from euxideroxylon zwageri Ahmad Yani; Widya Wijayanti; Mega Nur Sasongko; Slamet Wahyudi; Dwi Irawan
Mechanical Engineering for Society and Industry Vol. 6 No. 2 (2026): Issue in Progress
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.16415

Abstract

This study evaluates the low-temperature pyrolysis of post-consumer polyethylene terephthalate (PET) from room temperature to 350 °C using biomass-derived activated carbon from Euxideroxylon zwageri (EZAC) as a renewable catalyst/adsorbent. PET–EZAC blends (100:0, 95:5, 90:10, 85:15, and 80:20; total feed 500 g) were processed in a fixed-bed reactor under an inert atmosphere. EZAC significantly shifted product distribution and exhibited an optimum at PET:EZAC = 90:10 (w/w), which produced the maximum oil yield of 543 mL (404 g; 80.8 wt%) and exceeded the oil yield from non-catalytic PET pyrolysis. Under this optimum condition, fuel-relevant properties improved, yielding an research octane number (RON) of 97 and a higher heating value (HHV) of 47.88 MJ/kg; the flash point and kinematic viscosity decreased to 13 °C and 2.384 cSt, respectively, while density remained nearly constant (0.772 g/mL). GC–MS results showed the most gasoline-like composition at PET:EZAC = 90:10, dominated by the C7–C10 fraction (62.95%) with a balanced hydrocarbon-class distribution (Alkanes 64.64%, Olefin 27.61%, and Aromatics 7.75%). MQ sensor-based gas profiles further suggested that EZAC accelerated the onset of H₂ and CH₄ formation, with peak sensor responses of 745 ppm for H₂ and 871 ppm for CH₄ at 20% EZAC. Overall, EZAC is a promising renewable material for steering secondary reactions during low-temperature PET pyrolysis, thereby improving both oil yield and oil quality.
Co-Authors Adi Cahyono Adi Salasiyanto Agus Subakti Ahmad Khudori Ahmad Okhtri Saputra Ahmad Suri Ahmad Yani Ahmad Yani Amran, Yusuf Ardiyanto Darmanto Ardyanto Darmanto Arif Permadi Asep Supriyanto Asroni Asroni Asroni Asroni Awalu Far’i Chica Oktavia Didi Setiawan Doni Saputra Edi Winarno Edwin Dian Pratama Eko Budiyanto Eko Budiyanto Eko Nugroho Eko Nugroho Eko Nugroho Eko Suwanto Eko Widiyanto Eri Prawati Fajar Khusaini Farid Hendro Wibowo Feby Aristia Putri Fendi Firmansyah Firmansyah, Fendi Fisal Yuliansyah Fuad Dwi Hanggara Harnyoto, Harnyoto I.N.G. Wardana Ida Hadijah Iskandar, M. Nur Jepri Juliyanto Kemas Ridhuan Kemas Ridhuan Kurniawan, Septyanto Kusumo, Herma Nugroho rono adi La Rudawin Laksono Trisnantoro M Lutfian Candra Saputra Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin Mafruddin, Mafruddin Mahyudi, Erik Tri Masuradi Simbolon Mega Nur Sasongko Muarif, Bahtiar Mugiyono Saputra Muhammad Iman Hidayat, Muhammad Iman Mustofa Mustofa Nanang Setiawan Nova Khoirul Anam Nurlaila Rajabiah Pratama, Edwin Dian Pratama, Renno Yoga Rahmady Setiawan Rangga Sukma Hariadi, Dedid Renno Yoga Pratama Ridwan Ridwan Riswanto Riswanto Rizki Inthifawzi Rolia, Eva Rully Meygi Irawan Slamet Wahyudi Slamet Wahyudi Sriharyani, Leni Sulis Dri Handono Susanto, Helmi Tri Cahyo Wahyudi Untung Surya Dharma Untung Surya Dharma, Untung Surya Wahyudi Saipulloh Widya Wijayanti Widya Wijayanti Yulita Zanaria, Yulita