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All Journal Journal of Renewable Energy, Electrical, and Computer Engineering Jurnal Pendidikan Teknik Mesin
Jumadi Rusli
Universitas Malikussaleh
Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering Other

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Pembuatan Media Alat Peraga Transmisi Manual Sepeda Motor 4 Tak Sebagai Media Pembelajaran Siswa Aldi Jurisma Ariga; Siraj; Islami Fatwa; Abubakar Dabet; Jumadi Rusli
Jurnal Pendidikan Teknik Mesin Vol. 12 No. 2 (2025): Jurnal Pendidikan Teknik Mesin
Publisher : Program Studi Pendidikan Teknik Mesin Fakultas Keguruan dan Ilmu Pendidikan Universitas Sriwiajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v12i2.92

Abstract

Penelitian ini yang bertujuan untuk meningkatkan pemahaman siswa dalam memahami sistem dari cara kerja transmisi manual dengan menggunakan media alat peraga. Dikarenakan untuk media alat peraga transmisi manual tidak tersedia maka “peneliti” melakukan pembuatan media alat peraga tersebut. Tujuan dari penelitian ini ialah untuk mengetahui: (1) proses rancang bangun alat peraga sistem transmisi manual, (2) tingkat kelayakan dari media alat peraga transmisi manual, (3) respons siswa terhadap media alat peraga transmisi manual. Jenis penelitian ini menggunakan penelitian pengembangan Research and Development (R&D). Instrumen yang digunakan ialah: Observasi, angket dan dokumentasi. Metode penelitian ini meliputi potensi masalah, pengumpulan data, desain produk, validasi desain, revisi desain, dan uji coba produk. Teknik analisis data dalam penelitian ini ialah: validasi ahli materi dan validasi ahli media, analisis kualitatif persentase. Untuk menentukan alat peraga ini “layak” digunakan atau “tidak layak”, maka dilakukan validasi. Berdasarkan validasi dari kedua ahli media dapat disimpulkan hasil dari media alat peraga dapat digunakan hal ini telah terbukti berdasarkan skor yang diberi sebesar 97,91% dan 95,02% dengan persentase “sangat layak”. Dan hasil dari responden siswa terhadap media alat peraga transmisi manual mendapatkan skor 81.59% dengan persentase “layak”.
Performance Evaluation of Solar-Powered Hydrothermal Equipment for Rice Husk Biomass Treatment Martunis; Adi Setiawan; Abubakar Dabet; Jumadi Rusli; Riza Andriani; Gunawati
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 6 No. 1 (2026): March 2026
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v6i1.23926

Abstract

This study aims to analyze the performance of a solar-powered hydrothermal reactor with a capacity of 1 liter, utilizing a parabolic solar collector in the heating process of rice husk. The use of solar energy as an alternative heat source is expected to reduce dependence on fossil fuels and support the development of environmentally friendly technologies. This research employs an experimental method with a quantitative analysis approach. Two variations of raw material mixing ratios were tested: a 1:1 ratio (1 kg of water: 1 kg of rice husk) and a 1:2 ratio (500 grams of rice husk: 1 kg of water). Each ratio was tested three times, monitoring parameters such as material temperature, pressure, ambient temperature, and solar light intensity over a period of 3 hours. The results indicate that the hydrothermal device can achieve a maximum temperature of up to 135°C and a maximum pressure of 36 psi. The highest average temperature was obtained at the 1:1 ratio, measuring 95.46°C, while the 1:2 ratio yielded 85.80°C, demonstrating a significant difference in heating effectiveness. The effectiveness of the solar collector is highly dependent on solar light intensity and weather conditions. This study concludes that the parabolic solar collector is effective as a heat source in small-scale hydrothermal systems and has great potential for application in the processing of biomass waste based on renewable energy in tropical regions.
Co-Authors Abubakar Dabet Adi Setiawan Aldi Jurisma Ariga Gunawati Islami Fatwa Martunis Riza Andriani Siraj