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All Journal IPTEK Journal of Proceedings Series Rekayasa Mesin Sinergi VANOS Journal of Mechanical Engineering Education Turbo : Jurnal Program Studi Teknik Mesin Journal of Research and Technology JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Prosiding Seminar Nasional Sains dan Teknologi Terapan Scientific Journal of Mechanical Engineering Kinematika Mechanical Engineering for Society and Industry Journal of Mechanical Engineering, Science, and Innovation Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Journal of Science and Social Development
Zain Lillahulhaq
Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Adhi Tama Surabaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Pemanfaatan Tempurung Kelapa sebagai Katalis pada Proses Konversi Minyak Curah Menjadi Biodiesel Yustia Wulandari Mirzayanti; Erlinda Ningsih; Zain Lillahulhaq; Zuhdi Ma’sum; Chevy Renova; Yasin Wijaya
Journal of Research and Technology Vol. 6 No. 2 (2020): JRT Volume 6 No 2 Des 2020
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v6i2.351

Abstract

Vegetable oil is one of the alternative sources of raw material for fuel oil to produce biodiesel. The conversion reaction process requires the help of a catalyst to break down triglycerides into methyl esters. Therefore, this study aims to determine the performance of catalysts made from coconut shells to convert bulk oil into biodiesel. The catalyst performance is focused on biodiesel's yield parameters through the influence factor of catalyst weight, molar ratio, and %FAME. This research was conducted in three stages, namely (1) catalyst preparation, (2) application of catalyst performance through the conversion process of bulk oil into biodiesel, (3) washing of biodiesel. The first stage was catalyst preparation carried out by utilizing a coconut shell, which was first made into charcoal, then activated using H3PO4 then sulfonated with H2SO4. The second stage was the conversion process of bulk oil into biodiesel using coconut shell catalysts through a transesterification process using variations in the catalyst's weight to bulk oil (0.5; 1; 1.5; 2; and 2.5% wt/wt) and bulk oil molar:methanol ratio (1: 3; 1: 6; and 1: 9). The third stage was the process of washing biodiesel using HCl. Based on this study's results, the best catalyst weight was 2% wt/wt with a molar ratio of 1: 9 resulting in the highest yield of 89% and the FAME of 80.36%.
STUDI EKSPERIMEN PENGARUH PENGGUNAAN ENDPLATE BERLUBANG PADA TURBIN SAVONIUS Zain Lillahulhaq; Ilmiatul Masfufiah; Irsyad Amirullah
Scientific Journal of Mechanical Engineering Kinematika Vol 7 No 1 (2022): SJME Kinematika Juni 2022
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v7i1.202

Abstract

The Savonius turbine is widely used because it has a simple design. However, the Savonius turbine has a lower efficiency than the Horizontal Axis Wind Turbine (HAWT). Several studies have been conducted to increase the efficiency of the Savonius turbine. Turbine performance can be improved by reducing the negative vortex by creating a flushing effect. This experiment was conducted to determine the impact of circular cut-off end plates on the Savonius turbine. The research results are shown through turbine performance data on wind turbine angular speed, electric power, static torque, and efficiency. The wind turbines with circular cut-off endplates had higher angular velocities than conventional Savonius turbines. The angular velocity measurement is carried out when the turbine is unloading. Meanwhile, the electric power and static torque of a conventional turbine are more significant than a modified turbine. The measurement of electric power and static torque is carried out when the turbine is in a generator-loaded condition (loading).
Pengaruh variasi laju aliran fluida terhadap kapasitas pengeringan pakaian (tipe pengering lemari) Syamsuri Syamsuri; Zain Lillahulhaq; Akhfaruhal Akhfaruhal
TURBO [Tulisan Riset Berbasis Online] Vol 12 No 1 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2538

Abstract

Clothes dryers are now widely used to help with laundry. During the rainy season, drying clothes outside is impractical. Furthermore, clothing may become contaminated with pollution. The rotating drum dryer is the most widely used model for utilizing centrifugal force. However, there are some disadvantages, such as wrinkled clothes from sun drying. The purpose of this study was to determine heat transfer in a clothes dryer with a drying cabinet type. The clothes to be dried are hung on a rack and blown dry with hot air. Convection will reduce the amount of water in the clothes. The hot air inlet velocity was varied between 3m/s, 4m/s, and 5m/s for this study. Changes in clothing surface temperature, calorific value, and efficiency were measured. The findings indicated that the air entering the drying cabinet must be moving at a slow speed. As a result, the incoming air has more time to transfer heat and contains more energy.
Optimization air circulation in negative pressure closed-house poultry buildings: A study on evaporative cooling pad thickness and exhaust fan operating pattern Lillahulhaq, Zain; Widodo, Wawan Aries; Sutardi, Sutardi; Yone, Thearith
Mechanical Engineering for Society and Industry Vol. 5 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.14096

Abstract

An optimal environment for raising poultry requires a cool, humid climate. Negative pressure air circulation is widely implemented in closed-house cages, combined with evaporative cooling pads (ECP). Fresh air cannot naturally pass through the ECP due to the porosity of the material. The characteristics of the ECP and the configuration of the exhaust fan operating pattern affect airflow distribution, including velocity, temperature, and relative humidity (RH) levels. This research simulated the effect of varying ECP thickness on airflow distribution inside a closed-house cage. The simulation was run under 3D steady-state conditions with ECP thicknesses of 100 mm, 150 mm, 200 mm, and 300 mm, respectively. The ECP was kept wet, resulting in incoming air with 60% humidity and a temperature of 27 °C. The study used the K-ω SST turbulence model and SIMPLE second-order discretization. The analysis also provides recommendations for optimal exhaust fan operation during summer and identified restricted area. Five different fan operating patterns were tested, combining a small exhaust fan with two large ones. This analysis based on several parameter which refers uncomfortable environment, including: velocity, temperature, RH levels, and pollutant gas concentration. Hazardous conditions were determined by the maximum values observed across 42 iso-surfaces spaced 1 meter apart along the x-axis. A thicker ECP resulted in a higher pressure drop, reducing temperature differences inside the cage and leading to a more uniform temperature distribution. The 100 mm ECP thickness, the thinnest ECP layers, lowered the temperature inside the closed-house cage. The study suggests that, during summer, operating one small exhaust fan and one large fan is optimal due to the reduced presence of hazardous areas inside the cage.
Co-Authors Abdul Ghofur Afira Ainur Rosidah Afrizal Amir Afrizal Amir Agung Cahyo Legowo Ahmad Anas Arifin Akhfaruhal Akhfaruhal Ali Khomsah Anindya Rachma Dwicahyani Anindya Rachma Dwicahyani Anton Nugroho Anugrah Fardhan Rasyidi Anugrah Fardhan Rasyidi Ardi Noerpamoengkas Bagus Putra Mahardika Bambang Setyono, Bambang Chevy Renova Chevy Renova Desmas Arifianto Patriawan Dian Yanuarita Purwaningsih Doan Besthian Saragih Donny Albari Donny Albari Dwi Khusna Dwi Kusuma Edi Purnomo Erlinda Ningsih Erlinda Ningsih, Erlinda Fahreza Dwi Sandy Frizka Vietanti Gatot Setyono Gilang Satrio Bawono Hery Irawan, Hery Iftika Philo Wardani Ilmi, Syamsuri Ilmiatul Masfufiah Indra Adi Gunawan Irsyad Amirullah Luthfi Hakim M Arif Maulana, Hasan Syafik Michael Azzura Akbar Miftahul Ulum Moch Syaiful Huda Moch Syaiful Huda Mufarrichi, Muhammad Muhammad Abrory Naili Saidatin Nasyith Hananur Rohiem Novian Patria Uman Putra Rizal Mahmud Rizal Mahmud Roni Akustik Kurniawan Safiullah Safiullah Sasongko, Sukendro Broto Setyowati, Vuri Ayu Suheni Sutardi Sutardi Syamsuri Syamsuri Syamsuri Syamsuri Syamsuri Syamsuri Vietanti, Frizka Vivien Suphandani Djanali Vuri Ayu Setyowati Wardani, Iftika Philo Wawan Aries Widodo Yasin Wijaya Yasin Wijaya Yohanes Charles Narding Yone, Thearith Yusron, M Yustia Wulandari Mirzayanti Yustia Wulandari Mirzayanti Zuhdi Ma’sum Zuhdi Ma’sum