Putra, Juliawan Tri Andika (2026) Rancang Bangung Prototype Roaster Coffee Rotary Berbasis Panel Surya Dengan Heater Sebagai Sumber Pemanas. Undergraduate thesis, Politeknik Negeri Jember.
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Abstract
This study aims to design and test a horizontal rotary coffee roaster prototype based on an off-grid solar power system (SPS) to reduce operational fuel costs for small industries. The research methods include design engineering, mechanical fabrication, electrical installation, and functional testing. The results showed that the machine prototype, weighing 22.98 kg, was successfully realized using a stainless steel 316 drum with a maximum capacity of 1.2 kg. The drive system utilizes a 12V 12 RPM DC gearbox motor, while the heating system uses a coil-type electric heater with dual power options (300 W/600 W) insulated with aluminum foil. The electrical system is powered by a 250 Wp solar panel set at a 15° tilt angle, a 30 A Solar Charge Controller (SCC), a battery, and a 1000 W inverter with an 81.92% conversion efficiency to supply a continuous peak load of 612 Watts. The system is also equipped with DC MCBs (20 A, 40 A, 125 A) for safety. The testing results indicate that the machine functions properly in roasting robusta coffee beans and is viable as an eco-friendly appropriate technology.
| Item Type: | Thesis (Undergraduate) | ||||||
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| Uncontrolled Keywords: | Coffee Roaster, Rotary Drum, Solar Panel, Off-Grid, Heater. | ||||||
| Subjects: | 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 432 - Teknik Produksi (dan Atau Manufakturing) 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 443 - Teknik Enerji 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 445 - Teknik Material (Ilmu Bahan) 410 - Rumpun Ilmu Teknik > 450 - Teknik Elektro dan Informatika > 451 - Teknik Elektro 410 - Rumpun Ilmu Teknik > 450 - Teknik Elektro dan Informatika > 452 - Teknik Tenaga Elektrik |
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| Divisions: | Jurusan Teknik > Prodi D4 Teknik Energi Terbarukan > Tugas Akhir | ||||||
| Depositing User: | Juliawan Tri Andika Putra | ||||||
| Date Deposited: | 03 Aug 2026 01:13 | ||||||
| Last Modified: | 03 Aug 2026 01:13 | ||||||
| URI: | https://sipora.polije.ac.id/id/eprint/59006 |
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