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Romi Djafar
Program Studi Teknik Mesin, Universitas Nahdlatul Ulama Gorontalo

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Rancang Bangun Mesin Pencetak Biopelet dari Sekam Padi Supriandi Monoarfa; Romi Djafar; Syamsu Akuba; Siradjuddin Haluti
JTPG (Jurnal Teknologi Pertanian Gorontalo) Vol 7 No 2 (2022): Jurnal JTPG (November)
Publisher : PROGRAM STUDI MESIN DAN PERALATAN PERTANIAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30869/jtpg.v7i2.959

Abstract

Energy is one of the most important community needs in supporting everyday life such as cooking. The energy in question can come from fossil fuels or wood. However, its availability will decrease over time, especially fossil fuels. Therefore, it is necessary to have other alternatives as a substitute for fuel. One of the materials that can be used as an energy source is biopellet. This study aims to design a machine used to make biopellets. The biopellet in this study was made from rice husk as raw material. This research was conducted through several stages, namely design and design, manufacture and fabrication, and testing. The biopellet printing machine has a tube-like shape with an outer diameter of 300 mm, whereas on the inside there is a mold with a hole with a diameter of 15 mm. The biopellet printing machine is also equipped with a roller that functions to press the dough to pass through the mold. Tests for making biopellets were carried out three times with different compositions of raw materials. The first test consisted of adhesive and rice husk with a ratio of 0.50:1. The second and third tests have adhesive and rice husk ratios of 0.75:1 and 1:1, respectively. 0.50 liters of water was added to each mixture to form a dough. The test results show that biopellets have different structures and characteristics. The third test had a dense biopellet structure, a smooth and uniform surface, and fewer fractures and cracks. In addition, the productivity is also higher than the first and second tests. This difference is of course many factors that influence, such as emphasis, the main composition of the material, and the size of the main material.
Uji Kinerja Mesin Panen Padi Menggunakan Mesin Brush Cutter Yunita Djamalu; Romi Djafar; Sunandar Udjaili
JTPG (Jurnal Teknologi Pertanian Gorontalo) Vol 8 No 2 (2023): Jurnal JTPG (November)
Publisher : PROGRAM STUDI MESIN DAN PERALATAN PERTANIAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30869/jtpg.v8i2.1192

Abstract

Penelitian ini bertujuan untuk memodifikasi alat pemotong rumput menjadi mesin pemanen padi tipe brush cutter dengan modifikasi yang lebih aman dan mudah digunakan serta mengevaluasi unjuk kerja mesin tersebut. Material teknik yang digunakan meliputi pelat aluminium, bilah bundar yang dilapisi karbida, sabuk operator, pipa aluminium, kain, dan mesin. Mesin pemanen padi tipe brush cutter terdiri dari mesin YSI-328, handle, batang penghubung, sayap pemandu, mata gergaji, tali selempang, dan pelat pengaman kaki. Tipe mata pisau berbentuk lingkaran terbuat dari karbida dengan jumlah mata pisau pemotong sebanyak 42 buah di sisi lingkaran. Ujung mata pisau memiliki ukuran 4x3x2 mm dengan kecepatan putaran antara 3500-4500 rpm. Mesin ini memanfaatkan kecepatan dorongan, yakni nilai untuk memotong empat rumpun padi dengan jarak tanam 25 cm atau setara dengan lebar kerja 100 cm, dimana gerakan mendorong dimulai dari kanan ke kiri dengan waktu berkisar antara 0,7 hingga 1 detik. Mesin ini dilengkapi tali selempang yang terbuat dari kain dengan panjang 2 m. Selain itu, mesin ini juga memiliki pelat pengaman kaki yang terbuat dari aluminium dengan dimensi 50 x 10 cm dan tebal 2 mm. Hasil pengujian pada luasan 50 m2 diperoleh kapasitas aktual memadai sebesar 3,33 m²/menit. Pada luasan tersebut, mesin panen padi hasil modifikasi memerlukan konsumsi bahan bakar sebanya 0,5 liter dengan efisiensi kerja mesin sekitar 82-85%.
Co-Authors Siradjuddin Haluti Sunandar Udjaili Supriandi Monoarfa Syamsu Akuba Yunita Djamalu