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All Journal Jurnal Energi Dan Manufaktur Logic : Jurnal Rancang Bangun Dan Teknologi
I Made Agus Putrawan
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Potensi Biogas dari Substrat Bio-Limbah Perhotelan I Nyoman Suprapta Winaya; I Gusti Ngurah Putu Tenaya; I Made Agus Putrawan
Jurnal Energi Dan Manufaktur Vol 8 No 1 (2015): April 2015
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Penelitian ini bertujuan untuk mengetahui potensi produksi biogas yang dihasilkan daripemanfaatan bio-limbah perhotelan seperti limbah dapur (kitchen) dan limbah lumpur (sewage)dengan penambahan inokolum kotoran hewan. Jumlah material kering (total solid, TS) darilimbah hotel akan dikaji untuk diketahui pengaruhnya terhadap produksi biogas yang dihasilkan.Penelitian dilakukan secara eksperimen dengan variasi TS sebesar 3, 4, 5 gram ke dalamsebuah biodigester skala laboratorium kapasitas 1000ml. Pengukuran kinerja dari biodigesterdiamati selama 40 hari dan dilakukan pengkondisian pH pada digester kontrol. Pengujiankandungan gas metana dilakukan secara langsung menggunakan metode absorpsi CO2 Brigongas tester. Hasil penelitian menunjukkan bahwa dengan mengkondisikan pH pada rentang 6,8-7,5 merupakan kondisi ideal bagi bakteri metana sehingga mempengaruhi produksi biogas yangdihasilkan. Komposisi 5 gram TS sewage dengan pH dikondisikan menunjukkan volume spesifikbiogas paling tinggi. Sedangkan persentase gas metana yang dihasilkan tidak memiliki korelasilangsung terhadap komposisi material kering dan menunjukkan fenomena yang hampir seragamKata kunci : Limbah perhotelan, inokolum, biogas, total solidThis study aims to determine biogas production using organic waste as raw material from hotelindustries such as kitchen waste and sewage sludge with the addition of inokolum. Total drymatter (total solid, TS) of organic waste is studied to determine its effect on the biogas production.Experiments was conducted with a variation of TS of 3, 4, 5 grams into a biodigester laboratoryscale of 1000ml. Measurement of the performance of the biodigester was observed for 40 daysand the pH condition in the digester was controlled. Methane gas content was done directly usingBrigon CO2 gas tester. The results showed that the conditioned of pH 6.8 to 7.5 are found as theideal conditions for methane bacteria to produce of biogas. Composition of 5 grams TS sewagewith a conditioned pH showed the highest specific volume of biogas production. While thepercentage of methane gas that is produced does not have a direct correlation to the compositionof TS and show the phenomenon that is almost uniformlyKey words: hotel wastes, inoculum, biogas, total solids
ANALYSIS OF THE EFFECTIVENESS OF WATERWHEELS AS WATER PUMP DRIVERS Pradnyana, Agung; I Made Anom Adiaksa; I Made Agus Putrawan; I Wayan Suma Wibawa; Made Ardikosa satrya Wibawa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 25 No. 2 (2025): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v25i2.132-139

Abstract

A pump is a device used to move liquids from one location to another through a pipeline, typically by increasing fluid pressure using electrical power. This increase in pressure helps overcome various types of flow resistance, such as pressure differences, elevation changes, or frictional losses. Transporting fluids from lowland to highland areas is not a simple task, particularly in remote regions where access to electricity is limited. This research was conducted at Pura Beji, Tanah Lot, Beraban Village, Tabanan Regency—an area that has abundant clean water resources in the lowlands compared to the highlands. The study focuses on the process of transferring clean water using water wheels as mechanical drivers in a system known as PATA Technology (Pompa Air Tenaga Air). Therefore, the objective of this research is to analyze the mechanical power generated by the water wheels and the resulting pumping performance of the water pump. This study investigates the effectiveness of waterwheels as mechanical drivers for water pumps in rural areas with limited electricity access, using the PATA (Pompa Air Tenaga Air) system. According to the research result, it was found that for mass flowrate of water wheel 75.5 kg/s then for the mass flowrate of water pump 14.7 kg/s. The efficiency for the waterwheels against the water pump obtained >40%. The water wheels act as the main drive of the water pump through rotation axle gear mechanism which is transmitted to the housing pump with average power water wheel 650 kg.m/s2
Co-Authors I Gusti Ngurah Putu Tenaya I Made Anom Adiaksa I Nyoman Suprapta Winaya I Wayan Suma Wibawa Made Ardikosa satrya Wibawa Pradnyana, Agung