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Analisa Pengaruh Variasi Sudut Sambungan Belokan Terhadap Head Losses Aliran Pipa Zainudin, Zainudin; Adi Sayoga, I Made; Nuarsa, Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 2 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

On the water distribution, the connection of pipe bends is typically obtained either in industry or in housing. On the water distribution, it is often gained the lost of energy or head losses. The amount of head losses occurring in the connection of branch pipe is influenced by several factors, such as: diameter, flow, viscosity, and the angle at the bend pipe connections.This study aimed to determine the effect of variation of the connection point of the bend pipe to the head losses and pressure drop. To do it, the researcher uses an experimental method as a tool by varying the bend angle is 30o, 45o, 60o, and 90o. The result shows that head losses and the small pressure drop occur in the bend angle 30o is 73, 23 mm and 907.606 N/m2. While the head losses and pressure drop is the greatest at an angle of 90o, is 74, 80 mm and 1278,899 N/m2.
PEMERATAAN ENERGI GELOMBANG LAUT DENGAN SISTEM BERPISTON AKSI GANDA Adi Sayoga, I Made; Nuarsa, I Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Semakin menipisnya cadangan minyak dunia menyebabkan harga bahan bakar minyak (BBM) terus melambung. Kondisi ini menyebabkan masalah yang serius yang perlu diatasi. Potensi energi yang diperbaharui seperti : energi angin, matahari dan gelombang laut  perlu segera dilirik walaupun mungkin sudah terlambat. energi potensial dan kinetik yang terkandung pada gelombang laut dapat  dikonversikan untuk pemanfaatan tenaga listrik maupun pompa air bersih dan irigasi. Tujuan penelitian adalah untuk memanfaatkan potensi energi gelombang untuk dikonversi menjadi tenaga listrik.  Adapun manfaat penelitian ini adalah akan diperoleh metode dan sumber energi alternative yang ramah lingkungan serta tidak membutuhkan bahan bakar minyak. Energi alternatif ini ditunggu pemanfaatannya oleh masyarakat.    Kegiatan penelitian diawali dengan studi literatur untuk mengkaji penelitian yang terdahulu, mencari perumusan dengan teori yang ada. Hasil studi literatur dilanjutkan membuat disain atau rancangan alat dengan perhitungan–perhitungan. Perhitungan mengacu pada prinsip pemanfaatan energi gelombang laut semaksimal mungkin. Dari perhitungan tersebut sangat menentukan langkah selanjutnya seperti pembuatan bentuk, pemilihan bahan, menentukan alat ukur dan model pengukuran.             Konversi energi dari gelombang ke piston yang paling efektif terjadi pada saat pelampung (piston) diberikan beban W setengah dari Fa Total (W=Fa/2 total) dibandingkan pada saat tak berbobot (W=0) maupun pada saat piston diisi penuh (W=Fa total).            Dari hasil pengujian ternyata prototype pemerataan gelombang laut dengan sistem aksi ganda mampu menghasilkan energi listrik. Pada saat gelombang naik, energi gelombang menekan tuas melalui pelampung yang selanjutnya memutar roda gigi yang telah terhubung dengan generator listrik. Sedangkan pada saat gelombang turun roda gigi juga berputar akibat berat pelampung yang telah diiisi pemberat air. 
Pengaruh Methanol Terhadap Torsi, Daya Epektif Dan Komsumsi Bahan Bakar Spesifik Epektif Pada Mesin Daihatsu Ferosa 1994 Adi Sayoga, I Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The research of the effect of methanol to the Torque, power effective and specific fuel consumption effective  at Daihatsu Ferosa machine 1994 had been done. The research had done in mechanical engineering laboratory, engineering faculty mataram University.                The percentage of methanol and premium  was varied each 0%, 5%, 10%,15%and 20% methanol. Each fuel was tested at wide open throttle (WOT) at fourth transmission 1600rpm, 2100 rpm, 2600 rpm and 3600 rpm. The data that got in the experiment was analysis and calculated to find torque, effective power and specific fuel consumption effective.                The result shown that at the higher percentage of methanol torque and power effective decrease gradually. Therefore the specific fuel consumption effective increase at the higher percentage of methanol. 
Penerapan Mesin Penyedot Debu Model Sentrifugal Untuk Usaha Kreatif Kerajinan Kulit Kerang Mutiara “Concha” Handycraft Menunjang Pariwisata Berkelanjutan Di Desa Meninting Lombok Joniarta, I Wayan; Wirawan, Made; Adi Sayoga, I Made; Yudhyadi, I Gusti Ngurah Ketut; Mirmanto, Mirmanto
Jurnal Gema Ngabdi Vol. 7 No. 1 (2025): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v7i1.547

Abstract

The problem of dust pollution at the service partner "Concha Handycraft" is at the core of program activities. Controlling dust from its source is the main goal, namely replacing blower style vacuum cleaners with centrifugal type vacuum cleaners. The centrifugal type was chosen because it has a simple shape, the motor is separate from the fan, so the motor is protected from dust. The activity method begins with designing, purchasing materials, manufacturing in the workshop, testing, minor repairs, application and assistance. The results obtained are that the centifugal model vacuum cleaner that has been applied has advantages. The electrical power used from previously 260 watts to 120 watts. Working time can also increase because the motor used is a DC motor so it doesn't heat up quickly. If you use a blower model, the electric motor heats up quickly because it gets dust and needs to be cooled. The ability to suck up dust is also increased, with a fan at a 30 degree angle the ability to suck up and throw out is balanced. By using a centripugal model vacuum cleaner, 95% of the dust produced by the grinding machine can be sucked into the dust collection chamber.  Concha Handycraft partner SME owners and employees are very happy with the new machine, so they can be more productive at work, and stay protected from exposure to dust in the workplace.