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Pengaruh Kecepatan Udara pada Alat Pengering Jagung dengan Mekanisme Penukar Kalor Alit, Ida Bagus; Susana, I Gede Bawa
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.9

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The purpose of this study was to design and determine the performance of a dryer for drying corn with biomass burning energy sources. The dryer consists of a biomass stove, a heat exchanger, and a drying cabinet. The dimensions of the biomass stove are 500 x 500 x 800 mm with a diameter and hole distances of the biomass stove wall is 10 mm and 50 mm, respectively. The heat exchanger pipe diameter is 25.5 mm, the drying cabinet 500 x 500 x 600 mm, and the biomass was rice husk. The heat exchanger is made of stainless steel pipes arranged in a parallel arrangement. A heat exchanger pipe connects the biomass stove to the drying cabinet in order to avoid drying products from burning biomass contamination. The results showed that the drying rate could be faster if the air velocity increases. Drying corn in order to reduce water content from 19% to 12% takes 47 minutes with an air velocity of 3 m/s.
Pengaruh rasio konsentrasi pada turbin air Savonius Ida Bagus Alit; Yesung Allo Padang; Mas'ud Mas'ud; Rudy Sutanto; I Gede Bawa Susana
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (290.244 KB) | DOI: 10.29303/dtm.v10i1.307

Abstract

Irrigation channels have the potential to be used as power plants. Savonius water turbine can be developed because it has a simple construction and is suitable for low speed, according to the characteristics of the irrigation channel. The objectives of the research were to understand the influence of the installation of concentrator the performance of Savonius water turbine. Concentrator can steer the incoming water flow toward the turbine blades that generate positive moments, consequently, the generated power increases. Variations in the concentration ratios studied were 2: 1, 3: 1, and 4: 1. The results show that adding concentrators can increase torque, turbine power and power coefficient. The best performance of the Savonius water turbine showed is with the concentrator ratio of 3:1.
PENGERING SUMBER ENERGI BIOMASSA SABUT KELAPA MENINGKATKAN PENGHASILAN PERAJIN IKAN TERI SKALA RUMAH TANGGA I Gede Bawa Susana; Ida Bagus Alit
AGROINTEK Vol 15, No 1 (2021)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v15i1.7200

Abstract

The process of drying anchovy traditionally causes the temperature and drying time to be suboptimal. This affects the income of anchovy fish processing workers. To increase the income of anchovy processing workers, a dryer is designed with a coconut fiber biomass energy source. The study was conducted on a sample of 20 people and a drying chamber capacity of 24 kg of wet anchovy. The drying process is carried out in the drying chamber. The drying chamber is integrated with a coconut fiber biomass burning stove and heat exchanger. Hot air drying is obtained through the conversion of coconut fiber thermal energy. The process of energy conversion occurs between the burning of coconut fiber in the furnace with environmental air flowing in the heat exchanger pipe. The resulting hot air flows into the drying chamber. This system has an impact on weather-free drying. In addition, the results of drying become hygienic. This has implications for the increased income of anchovy processing workers. Profits reach 3,408,000.00 IDR every month. Anchovy processing workers enjoy the profit from the investment costs of the dryer after 4.464 months. Coconut fiber biomass dryer has a Return on Investment level of 274.36%. It can be said that the application of coconut fiber biomass dryers in the process of drying anchovies provides positive results in the form of economics the profits.
Peningkatan Nilai Kalor Biomassa Kotoran Kuda dengan Metode Densifikasi dan Thermolisis I Gede Bawa Susana
Jurnal Teknik Mesin (Sinta 3) Vol. 11 No. 2 (2009): OCTOBER 2009
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Direct combustion of horse dung as an alternative fuel has caused a lot of smoke and dust. Its efficiency and heating value were low. To improve its properties, the conversion method (densification and thermolysis) can be applied to increase the biomass heating value of the horse dung. The densification process was done using a mixture of starch and horse dung with the following ratio 1:3; 1:5; 1:7; 1:10. The results of the horse dung biomass then being processed by thermolysis (pyrolysis) using an oven with constant heating temperature and holding time, and with the addition of inert gas. Heating temperature and holding time are 300oC and 2 hours respectively. The results of testing conducted on the samples showed that the conversion of biomass horse dung in densification and thermolisis/pyrolysis were able to increase their heating value. The biomass briquettes with the ratio 1:10, were produce the highest heating value (dry heating value) i.e. 4708,775 kcal/kg. While bio-charcoal briquettes with ratio1:10 (thermolysis/pyrolysis results with the addition of inert gas), their highest heating value was 5002,791 kcal/kg. Abstract in Bahasa Indonesia: Proses pembakaran langsung kotoran kuda yang digunakan sebagai bahan bakar alternatif memiliki kekurangan seperti asap yang banyak, debunya yang dapat mengganggu pernapasan, efisiensi dan nilai kalor yang cukup rendah. Oleh karena itu diterapkan metode konversi, yaitu densifikasi dan thermolisis untuk meningkatkan nilai kalor biomassa kotoran kuda. Untuk proses densifikasi digunakan campuran kanji dan kotoran kuda dengan komposisi 1:3, 1:5, 1:7, 1:10. Hasil densifikasi biomassa kotoran kuda kemudian diproses secara thermolisis (pirolisis) menggunakan oven pemanas dengan suhu pemanasan dan waktu penahanan (holding time) yang konstan, yaitu 300oC dan 2 jam, serta perlakuan dengan gas inert. Hasil pengujian yang dilakukan pada sampel, didapatkan bahwa konversi biomassa kotoran kuda secara densifikasi dan thermolisis/pirolisis dapat meningkatkan nilai kalor, dimana untuk briket biomassa menghasilkan nilai kalor tertinggi pada perbandingan kanji dan kotoran kuda 1:10, sebesar 4708,775 kcal/kg. Sedangkan briket bioarang (hasil thermolisis/pirolisis) menghasilkan nilai kalor tertinggi pada perbandingan kanji dan kotoran kuda 1:10, dengan perlakuan gas inert sebesar 5002,791 kcal/kg. Kata kunci: Kotoran kuda, biomassa, bioarang, thermolisis/pirolisis, nilai kalor.
Aplikasi medan magnet pada saluran bahan bakar sepeda motor untuk penghematan konsumsi bahan bakar dan penurunan emisi gas buang I.M. Mara; I.B. Alit; I.G.B. Susana; I.M. Nuarsa
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.889 KB) | DOI: 10.29303/dtm.v12i1.500

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Reducing fuel consumption and improving fuel quality in motorcycle engines are very important in order to make the exhaust gas emission from the engine becomes more environmentally friendly. In this study, a magnetic field is attached to the fuel line so that the fuel is affected by the magnetic field. The magnetic field is obtained from electromagnetic magnets and permanent magnets. Fuel consumption is tested on a motorcycle engine that it uses a carburetor system and on an engine that uses a fuel injection system. The exhaust emissions observed were CO and HC by using exhaust gas analyzer. The results showed that the use of a magnetic field mounted on the fuel line can reduce the fuel consumption of a motorcycle engine, using either a carburetor system or a fuel injection system by an average of 18%. The use of magnetic fields also shows a very good effect in reducing exhaust gas emissions from motorcycle engines. The length of the magnet attached to the fuel line, 80mm provides a reduction in exhaust gas emissions of CO by 80% - 90% and HC by 60% - 77%. The percentage reduction in exhause gas emission is better than the other length of magnets.
PENGARUH SUSUNAN PIPA LALUAN TERHADAP PEMANFAATAN KALOR PADA KOLEKTOR SURYA PELAT DATAR ABSORBER GRANITE Made Wirawan; M. Mirmanto; I Gede Bawa Susana; Rudy Sutanto
Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (197.653 KB)

Abstract

The collector of solar energy can be used for heating fluidssuch as liquid or gas. The  optimize  absorbtion of solar energy depends on the collectordimention and component, e.g.the width, body of collector, tube formation, cover and isolation system. This research usesa granite absorber with a variation of tube formations and water flow rates. The aim of the research is tofind out the optimal tube formation. To achieve the aim of the research,theexperiments of water heating usingthree collectorswith a granite absorber 80 Cm x 100 Cm and three way tube formatians have been done.The variation of water flow rates had beenperformed toinvestigate the maximal performance. The water flow rates used were200, 250 and 300 cc/minute.The result of research achieved value of heat utilization of solar collector influenced by: arrangement inlet tube, flow rates of water and time. The maksimal heat utilization occur at parallel 7 for each flow rate. The flow rate 300 cc/minute show maximal heat utilization.
PENINGKATAN PRODUKTIVITAS PERAJIN IKAN TERI DENGAN KONVERSI ENERGI BIOMASSA Gede Bawa Susana; I Gede Santosa
Logic : Jurnal Rancang Bangun dan Teknologi Vol 15 No 1 (2015): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.337 KB)

Abstract

Proses pengeringan ikan teri secara alamiah memerlukan waktu dua hari saat cuaca cerah dan suhupengeringan tidak optimal yaitu ±33,43oC. Saat cuaca mendung atau hujan, perajin tidak bisa melakukan prosespengeringan. Proses pengeringan alamiah akan menimbulkan beban kerja tambahan dan rendahnya produktivitasperajin ikan teri. Oleh karena itu diterapkan metode konversi energi biomassa yaitu menggunakan heatexchanger untuk memindahkan udara panas ke dalam ruang pengering dengan sistem konveksi paksa dan udarapanas ini dihasilkan dari proses pembakaran biomassa sabut kelapa di dalam tungku. Hasil pengujian yangdilakukan pada 20 sampel, diperoleh bahwa dengan konversi energi biomassa yang diterapkan pada prosespengeringan dapat meningkatkan produktivitas perajin ikan teri sebesar 54,88%.
Working Productivity Analysis on the Process of Drying Fish Using Solar Dryers I Gede Santosa; I Gede Bawa Susana
Logic : Jurnal Rancang Bangun dan Teknologi Vol 21 No 1 (2021): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v21i1.2435

Abstract

The process of drying fish using solar energy is strongly influenced by weather conditions. Sunlight is needed by household scale workers because it is cheap. On the other hand, sun drying creates additional workload for workers. Workers are exposed to hot sun during drying. Continuous heat exposure results in an increased work pulse. This affects the level of worker productivity. To anticipate this, a solar dryer is used by utilizing a solar collector as an absorber of sunlight and a drying chamber for the drying process of fish. The use of solar dryers has been shown to increase drying temperatures and reduce workers' sun exposure. This decreases the workload of workers, so that it has an impact on increasing productivity. Worker productivity increased by 133.94%.
KONVERSI ENERGI BIOMASSA KOTORAN SAPI MELALUI RANCANGAN BIODIGESTER UNTUK RUMAH TANGGA I Gede Bawa Susana; I Made Suartika
Logic : Jurnal Rancang Bangun dan Teknologi Vol 17 No 3 (2017): November
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.864 KB) | DOI: 10.31940/logic.v17i3.641

Abstract

Biomassa kotoran sapi mengandung energi berupa gas metan yang dapat digunakan sebagai bahan bakar. Pengolahan biomassa kotoran sapi menjadi bahan bakar dilakukan melalui proses konversi energi dalam suatu biodigester. Biodigester dibuat untuk kebutuhan rumah tangga dengan kapasitas 0,5997 m3 untuk waktu penyimpanan 30 hari. Masyarakat yang memelihara sapi 2-3 ekor dapat menggunakan biodigester tipe plastik dan fixed dome dengan kapasitas tong plastik 250 liter. Hasil pengujian menunjukkan bahwa konversi energi biomassa kotoran sapi dapat digunakan sebagai sumber energi pada kompor.
PENGERING BERPENUKAR KALOR DENGAN SUMBER ENERGI SEKAM PADI I Gede Bawa Susana; Ida Bagus Alit
Machine : Jurnal Teknik Mesin Vol 6 No 2 (2020): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v6i2.1506

Abstract

Drying is one way to extend the shelf life of agricultural products. The drying process can be done by using conventional methods or a dryer. Dryer could utilize solar energy and others. The disadvantage of conventional drying by using solar energy is that very dependent on weather, while dryer with other energy sources such as electricity and fuel need an additional cost. For this reason, dryer with cheaper energy sources was needed, such as the use of husk waste. In addition to cheap, husk waste was also obtained easily. This study examined the use of dryer using rice husk waste for drying chili. The tool designed consists of husk burning furnaces, heat exchanger pipes and drying cabinets. A heat exchanger pipe is intended so that dry products were not contaminated with burning husks. The results showed that material weight, water content, crushing rate and drying efficiency decreased with time. The temperature of the drying cabinet ranges from 50 to 600 C with an air flow rate of 0.49 m3 / min. this tool can reduce chili water content 85.8% to 58.2% in 900 minutes, with an average efficiency of 22%.