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All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Community Empowerment Jurnal Vokasi Mekanika CONSEN: Indonesian Journal of Community Services and Engagement Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development Journal of Innovative and Creativity
- Primawati
Universitas Negeri Padang
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Experimental study on the use of wood pellet briquettes in rocket stoves for household energy needs Rafki Irianto; Yolli Fernanda; Primawati Primawati; Dori Yuvenda
Journal of Engineering Researcher and Lecturer Vol. 5 No. 1 (2026): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v5i1.206

Abstract

This experimental study investigates the effect of air supply configurations on the combustion performance and thermal efficiency of wood pellet briquettes in rocket stoves for household energy use. With increasing global demand for energy and the depletion of fossil fuels, the shift to renewable biomass fuels, such as wood pellets, is essential to reduce carbon emissions and enhance energy efficiency. The study evaluates four airflow configurations: right fan only (F3), lower-left + right fans (F2+F3), two left fans (F1+F2), and all fans (F1+F2+F3). The results show that the F3 configuration achieved the fastest boiling time, highest boiling temperature, and lowest heat-loss temperature, indicating superior thermal performance. In contrast, configurations with higher airflow (F1+F2 and all fans) led to greater heat losses and slower boiling times, suggesting that excessive airflow can negatively affect efficiency. Additionally, the analysis of residual mass revealed that F3 and F2+F3 configurations produced the lowest residuals, indicating more complete combustion. This study provides important insights into optimising airflow configurations to improve the efficiency of biomass stoves. The findings offer practical implications for the design and operation of sustainable cooking technologies, promoting energy efficiency and reducing reliance on fossil fuels in households, particularly in rural areas.
Students' Perception Of Machining Workshop Facilities And K3 Knowledge Towards Learning Outcomes In The Subject Of Lathe Machining Engineering In Grade 11 Of SMK Negeri 1 Sumatera Barat Ahmad Rifai Sihombing; Arwizet K; Rifelino Rifelino; Primawati Primawati
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i2.861

Abstract

Vocational schools are a strategic forum to introduce and build students' awareness of the importance of behaviors that support Occupational Health and Safety (K3). Based on the results of pre-observation at SMK Negeri 1 West Sumatra, it was found that several problems were quite significant related to learning outcomes and students' knowledge about Occupational Health and Safety (K3) in the Lathe Machining Engineering Subject. Inadequate workshop facilities result in students not understanding and not utilizing K3 equipment. This problem is the author's material to conduct research to measure Students' Perception of Machining Workshop Facilities and Students' K3 Knowledge of Student Learning Outcomes which is carried out by descriptive analysis methods. This study analyzed two independent variables and one dependent variable. Variables Workshop facilities, variables K3 Knowledge and Learning Outcomes as variables Y. The purpose of this study is to show that the percentage results obtained from each variable can describe how students' perception of the K3 Machining and Knowledge Workshop Facilities and Learning Outcomes are. The results of the study show that the value of the variable (Workshop Facility) has a perception at a low level, namely 7 (35%) students, the variable (K3 Knowledge) can illustrate that students' perception of K3 Knowledge is very high where as many as 7 (35%) students have this perception This illustrates that students' understanding of K3 Knowledge is very good. Furthermore, the Y variable (Learning Outcomes) shows a high percentage value it can concluded that most students have a good understanding of K3 Knowledge.
Co-Authors Abdul Marfuad Ahmad Rifai Sihombing Alvien Khardin Ambiyar, Ambiyar Arwizet Arwizet Arwizet Arwizet, Arwizet Budi Syahri Bulkia Rahim Cici Andriani Delima Yanti Sari Diki Alfarizi Dori Yuvenda Dori Yuvenda Eko Indrawan Fazrol Rozi, Fazrol Febri Prasetya Irzal Irzal Jasman Khairul Rezki M. Ilham Anugrah Illahi Muhammad Farhan Mulianti Nelvi Erizon Nurdin Hendri Nuzul Hidayat, Nuzul Purwantono Purwantono Purwoko, Agus Putri Nurhalimah Erdi Radhia Rafi Rahmat Ichsan Rafki Irianto Rahmadiawan, Dieter Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Reski Reski Resti Apriliyanti Rifelino Rifelino Sundhy Pareza Suparno Suparno Suyatno Suyatno Wagino Wanda Afnison Yoga Andika Yolli Fernanda Yovi Ardhan Yufrizal Yufrizal