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All Journal AJAD : Jurnal Pengabdian kepada Masyarakat EDUCATIONE: Journal of Education Research and Review Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Djefry Paulus Hosang
Politeknik Negeri Manado
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Social Sciences

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Integrasi Konsep Teaching Factory Pembuatan Kursi dan Meja dari Daur Ulang Limbah Plastik Steven Runtuwene; Winda Sanni Slat; Adolf Tonny Rasuh; Djefry Paulus Hosang; Oldi Malfri Lambonan
AJAD : Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 3 (2025): DECEMBER 2025
Publisher : Divisi Riset, Lembaga Mitra Solusi Teknologi Informasi (L-MSTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59431/ajad.v5i3.678

Abstract

Plastic waste is one of the most urgent environmental problems and continues to increase along with the development of industrial and tourism areas, including in North Minahasa Regency. The high volume of plastic waste generation has not been supported by an adequate management system, resulting in most of the plastic waste polluting the environment. This condition requires innovative solutions to convert plastic waste into valuable products. One approach implemented in this program is the Teaching Factory concept, which integrates learning processes with real production activities. The activities focused on processing plastic waste collected from the community, which was then converted into ready-to-use chair and table products. Through the Teaching Factory approach at the Polimdo campus and partner sites, students and lecturers were directly involved in every stage of production, starting from sorting, shredding, melting, molding, to product assembly. This program successfully collected 47 kg of HDPE, PET, and PP plastic waste, which was then sorted and recycled into plastic sheets, resulting in four chair products and two table products that are ready to use.
Pemanfaatan Energi Panas dari Pembakaran Sampah untuk Menggerakkan Turbin Impuls dan Turbin Fan Kembuan Gilbert; Pomantow Vicky; Paul Marthen Rumagit; Djefry Paulus Hosang; Artian Sirun
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 4 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i4.1626

Abstract

The escalating waste problem necessitates management alternatives that focus not only on reducing waste volume but also on utilizing waste as an energy source. This study employs a waste incineration system to evaluate two energy conversion mechanisms: an impulse turbine and a fan turbine. In the impulse turbine system, thermal energy from combustion generates pressurized steam directed at the turbine blades; test variables included the number of blades, blade angle, and steam pressure. In the fan turbine system, thermal energy and the flow of combustion gases drive turbine rotation, with variables including combustion temperature and the number of blades. Impulse turbine testing identified the optimal performance with a configuration of 10 blades, a 40° blade angle, and 2.5 bar pressure, yielding a rotational speed of 4,103 rpm, 6.2 V voltage, 4.1 A current, and 25.42 W power. For the fan turbine, the best results were achieved with a 3-blade configuration at 900°C, producing a flow velocity of 1.1 m/s, a rotational speed of 601 rpm, and a generator power output of 5 W. The findings demonstrate that a single waste incineration system can be utilized via two energy conversion pathways: steam for the impulse turbine and hot gas flow for the fan turbine.
DEVELOPMENT OF A SPRING-LOADED PRESSING SYSTEM AND HUSK DISPOSAL SYSTEM FOR A COCONUT DEHUSKING MACHINE Rifan Gabriel Pantow; Andri Firmansyah Yalisando; Nazriel Jusuf; Priyono; Djefry Paulus Hosang; Fransiscus Josep Tulung; Silvy Dollorossa Boedi
EDUCATIONE Volume 4, Issue 2, July 2026
Publisher : CV. TOTUS TUUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59397/edu.v4i2.300

Abstract

The previously developed coconut dehusking machine showed operational limitations because the pressing mechanism required operator assistance and the removed husk was not continuously discharged. This study developed and functionally validated an integrated spring-loaded pressing mechanism and belt conveyor-based husk disposal system intended to stabilize coconut movement and maintain a clear dehusking area. The engineering-development process comprised problem identification, computer-aided design, fabrication and assembly, machine testing, and descriptive data analysis. The pressing subsystem used a tension spring, rollers, a belt, and bolt-type lugs to maintain contact with the coconut, whereas the disposal subsystem used a belt conveyor positioned below the dehusking zone. Functional testing was conducted with ten mature coconuts with circumferences of 54.5–57.0 cm. The mean dehusking time was 8.85 s (SD = 0.80 s; range = 7.71–10.27 s). During the reported trials, the pressing mechanism maintained contact and guided coconut rotation, while the conveyor transported the removed husk to the collection area without reported manual clearing during the dehusking cycle. These findings demonstrate successful integration and proof-of-function under the tested conditions; they do not establish comparative performance improvement because no baseline machine was tested concurrently. Further work should quantify capacity, durability, energy use, safety, and performance across a wider range of coconut characteristics and operating conditions.
Uji untuk Kerja Turbin Angin Vertikal Sudu Standard Naca 0018 terhadap Sudu Tipe J Givara Nagita Anji Kaaro; Paul Marthen Rumagit; Djefry Paulus Hosang
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 4 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i4.1630

Abstract

This study aims to determine and compare the performance of a vertical-axis wind turbine using standard NACA 0018 blades and J-type blades. The research was conducted using an experimental method through direct testing of the vertical-axis wind turbine at several wind speed variations. The parameters observed included wind speed, turbine rotational speed (RPM), voltage, electric current, and electrical power generated. The test data were then analyzed to determine the effect of blade shape on the performance of the vertical-axis wind turbine. The test results show that changes in wind speed affect the rotational speed of the turbine and the electrical power generated. Differences in the shape of the NACA 0018 and J-type blades result in different turbine performance characteristics, particularly in terms of rotational speed, torque, and power generation. Based on the comparison of the test results, the blade type that provides more optimal performance under the testing conditions can be determined.
Co-Authors Adolf Tonny Rasuh Andri Firmansyah Yalisando Artian Sirun Fransiscus Josep Tulung Givara Nagita Anji Kaaro Kembuan Gilbert Nazriel Jusuf Oldi Malfri Lambonan Paul Marthen Rumagit Pomantow Vicky Priyono Rifan Gabriel Pantow Silvy Dollorossa Boedi Steven Runtuwene Winda Sanni Slat