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All Journal Journal of Science and Applicative Technology E-JOINT (Electronica and Electrical Journal Of Innovation Technology) Innovative: Journal Of Social Science Research AMMA : Jurnal Pengabdian Masyarakat
Sefrani IG Siregar
Institut Teknologi Sumatera
Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Other

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Fabrikasi Tempat Sampah Pintar Dengan Pemilahan dan Pemadatan Otomatis Amrina Mustaqim; Sefrani IG Siregar; Syamsyarief Baqaruzi
E-JOINT (Electronica and Electrical Journal Of Innovation Technology) Vol. 1 No. 2: E-JOINT, Desember 2020
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/e-joint.v1i2.454

Abstract

Sampah telah menjadi persoalan yang paling utama hingga saat ini.  Pengelolaan sampah terutama sampah plastik, yang tidak optimal bisa menyebabkan pencemaran lingkungan dan juga penyusutan lahan. Pengelolaan sampah di Indonesia dilakukan dengan sistem end of pipe, sehingga terjadi penumpukan sampah di tiap lokasi pengumpulan. Tempat sampah pintar ini dibuat khusus untuk sampah plastik yang nanti akan dikompresi sehingga dihasilkan sampah dengan volume yang lebih kecil dan dapat mengurangi proses penyusutan lahan. Pada tempat sampah ini terdapat tiga sistem utama. Sistem pemilahan sampah, sistem pemantauan daya tampung tempat sampah, dan sistem pemanas sampah. Hasil dari Ketiga sistem tersebut adalah tempat sampah pintar dapat bekerja secara optimal dengan rata-rata error kurang dari 5 persen.
Eco-Pedal Bicycle Prototype Design as An Alternative Multi-Information Display Energy Generator Sefrani Isdarmayani Siregar; Syamsyarief Baqaruzi; Rachmad Hidayatullah
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.376

Abstract

As technology grows, so does the consumption of energy, especially electricity. Today, electricity has become the most used energy worldwide and the demand keeps on increasing every year. According to PLN annual report the highest electricity consumption came from domestic sector which peak up to 97.832,28 GWh in 2018. Sadly, our current power supplies are not enough to fulfill those demands. It was the main reason to develop another form of cheaper, more efficient, and environmentally friendly power plants. This research aims to build a simple system which able to generate electricity for bicycle and to determine the voltage and the current it generates with certain speed which can be stored in portable batteries in order to meet the campus power demand. This design uses propulsion from the bicycle and using a 16.8 volt 6600 mAh Lithium-ion battery as its energy storage. The tests show that MID LCD may update and notify the changes of voltage, temperature, speed in every second. The average power released is 13 Watt with maximum output can reach 34 Watt. The test shows that the average voltage error is 0.79% while average temperature error is 1.28% and average speed error is 2.77%.
Pemanfaatan Kulit Kakao menjadi Produk Kerupuk sebagai Solusi Gagal Panen Perkebunan Kakao di Desa Karang Radja Sefrani Siregar; Vera Khoirunisa; Muhammad R. Ramanda; Dina Fithriyani
AMMA : Jurnal Pengabdian Masyarakat Vol. 2 No. 1 (2023): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

Cocoa is one of the highly valuable commodities in the Indonesian economy. In terms of its contribution to the nation's foreign exchange, cocoa comes in third. Nevertheless, the farmers' livelihoods in the village of Karang Raja, South Lampung Regency, have been impacted by the failure of the cocoa crop in 2020 and 2021. One way to prevent crop losses and lower the high cocoa shell waste in Karang Radja village is to use the leftover cocoa shells. With the help of this community service program, the residents of the village of Karang Radja will receive training on how to turn leftover cocoa shells into crackers. Surveys are conducted as part of the implementation process, and tools and materials are prepared as well as training in the cracker production.
Prediksi Temperatur Pengosongan Baterai Lithium Menggunakan Metode Autoregressive Integrated Moving Average Christio Revano Mege; Septia Eka Marsha Putra; Sefrani IG Siregar
Innovative: Journal Of Social Science Research Vol. 3 No. 4 (2023): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v3i4.4652

Abstract

Baterai litium-ion merupakan kandidat terdepan dalam penggunaannya sebagai penyimpan energi untuk listrik yang dihasilkan energi alternatif. Salah satu keuntungan dari tipe penyimpanan energi ini adalah kerapatan energi yang tinggi. Namun kinerja setiap sel lithium ion dalam modul sangat bergantung pada temperatur operasi yaitu antara 00C – 400C. Kenaikan temperatur baterai melebihi batas tersebut dapat secara signifikan mengurangi kinerja baterai. Oleh sebab itu diperlukan prediksi temperatur untuk mengetahui kapan temperatur baterai bisa naik melewati batas 400C. Dalam penelitian ini data temperatur yang diperoleh dari tahap pengambilan data digunakan sebagai data latih dan data uji untuk prediksi temperatur dengan metode Autoregressive Integrated Moving Average (ARIMA). Model kemudian dievaluasi dengan Root Mean Square Error (RMSE) dan Mean Absolute Deviation (MAD). Hasil menunjukkan model ARIMA dapat memprediksi kenaikan suhu baterai saat pengosongan pada kuat arus 10A, 20A, dan 30A. Model memiliki prediksi yang baik karena nilai RMSE dan MAD lebih kecil dari setengah standar deviasi data pengukuran.
Co-Authors Amrina Mustaqim Christio Revano Mege Dina Fithriyani Muhammad R. Ramanda Rachmad Hidayatullah Septia Eka Marsha Putra Syamsyarief Baqaruzi Syamsyarief Baqaruzi Vera Khoirunisa