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All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Jurnal Teknik Mesin Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS TEKNOSIA Jurnal Polimesin Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development
Yovan Witanto
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Experimental study on a laboratory-scale archimedes screw turbine using pitch-to-diameter ratio for low-head hydropower Helmizar Helmizar; Nurcholish Windiharto; Yovan Witanto; Afdhal Kurniawan Mainil; Rahmat Iman Mainil; Khotso Sai
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6690

Abstract

The Archimedes screw is a hydropower technology well-suited for low-head applications This study investigates the performance of a laboratory-scale Archimedes screw turbine for low-head hydropower applications by varying pitch-to-diameter ratio (P/D = 0.3, 0.38, 0.45, 0.52) and inclination angle (β = 22°, 25°, 27°). Experiments were conducted in a controlled water flow environment to evaluate torque, power output, and efficiency at different rotational speeds. Results indicate that both P/D and β significantly influence energy conversion. The highest performance was achieved at P/D = 0.45 and β = 22°, producing a peak torque of 0.36 Nm, a power output of 2.4 W, and a maximum efficiency of 52.37%. Lower inclination angles contributed to improved hydraulic energy capture due to better water filling and reduced slippage. These findings highlight the importance of optimizing geometric parameters to enhance turbine performance in small-scale, sustainable energy systems. The results offer design guidance for implementing Archimedes screw turbines in rural or off-grid low-head hydropower scenarios.
ANALISIS RESPON DAYA PEMANAS PADA FASILITAS HEATING CONTROL Prasetya Hariyanto, Kevin; Zuliantoni; Witanto, Yovan; Valentina, Pricylia
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 2 (2025): Oktober 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i2.40634

Abstract

Currently the Fassip-01 strand to Fassip-07 uses a control system of two positions (on-off) in controlling heaters to maintain stopping conditions when experiments are carried out. Nuclear Termofluidal System Research Group Develops the Heating Control Facility that functions as a Heating Control System Test Facility using PID system control (proportional integral derivative) to overcome the problem of existing residual heat due to the use of the Kend system This test was conducted to find out the analysis of 4 heater power before the experiment took place and analyzed RTM (Risetime) Setpoint 40.45, and 50 degrees. In this experiment the method used was an experiment so that the results were obtained in the form of accuracy values, heater positions, high energy consumption, poor power settings, large residual heat and time difference ratio in each setpoint.
Pelatihan Budidaya Cabai Polibag untuk Pemberdayaan dan Ketahanan Pangan di Pematang Gubernur Supardi, Nurul Iman; Amri, Khairul; Witanto, Yovan; Zuliantoni, Zuliantoni
Dharmakayana Vol 2 No 2 (2025): November : Dharmakayana: Journal of scientists, engineers, educators and scientif
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i2.45791

Abstract

This community service activity aims to improve community food security through the implementation of chili cultivation in polybags in Pematang Gubernur Village, Muara Bangkahulu District, Bengkulu City. The main problems faced by the community at the partner location are limited yard space and high chili prices during certain seasons. Through chili cultivation training in polybags, the community is equipped with knowledge and practical skills ranging from preparing the planting medium, sowing seeds, planting, maintenance, and harvesting. Implementation methods include counseling, live demonstrations, and field assistance. The results of the activity show an increase in community knowledge and motivation in utilizing limited land to grow chili independently. Thus, this activity contributes to supporting household food security and community economic empowerment.
Co-Authors Adhadi Kurniawan Afdhal Kurniawan Mainil Afif Chaniago Bastiar Agus Nuramal Agus Suandi Agus Suandi, Agus Angky Puspawan Anizar Indriani Anizar Indriani Anizar Indriani Anizar Indriani Aritonang, Jefri Fanto Benny Dwika Leonanda Bismantolo, Putra Budiman, Arif Adtyas Dedi Suryadi Eng Hendra Erwinsyah, Mochamad Dava Erwinsyah Helmizar Helmizar - Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendri van Hoten Hutapea, Gumarang ISMAEL , ALIF RAHMAN PELDIANSYAH Johan Johan Khairul Amri Khotso Sai Nopriani, Meti Eliza Nur ‘Azah Nurbaiti Nurbaiti Nurbaiti Nurcholish Windiharto Nurul Iman Supardi Prasetya Hariyanto, Kevin Pratama, Samuel Yoga Putra, Shandy Tri Rahmat Iman Mainil ricky, 240103 Rifki Sulthan Rosa, Khairul Amri Rosa, M. Khairul Amri Solly Aryza Syabanda, Yukhi Mustaqim Kusuma Triyansah, Olga Valentina, Pricylia Zuliantoni, Zuliantoni