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All Journal Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur Bumi Lestari Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Journal of Applied Agricultural Science and Technology Logic : Jurnal Rancang Bangun dan Teknologi International Journal of Engineering and Emerging Technology J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Logic : Jurnal Rancang Bangun Dan Teknologi
I Nyoman Suprapta Winaya
Program Studi Teknik Mesin Universitas Udayana
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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PEMANFAATAN LIMBAH KOTORAN HEWAN TERNAK SEBAGAI BIOGAS UNTUK KEPERLUAN RUMAH TANGGA DI KECAMATAN SIDEMEN KABUPATEN KARANGASEM BALI Rukmi Sari Hartati; I W. Sukerayasa; I N.Suprapta Winaya; K.Amerta Yasa
Buletin Udayana Mengabdi Vol 11 No 1 (2012): Volume 11 No.1 – April 2012
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Abstract

In order to fulfill the need of society energy, especially in the rural area, the building of an energy storage in every village is compulsory. The energy storage should be built by utilizing the local energy potency source, be processed and utilize as the energy reservoir, resulting the self-sufficiently energy. This Community Service was done in Pungutan, Telun Wayah village, Sidemen Karangasem regency. The farmers group was given the illumination how to use and utilize the cattle-drops to be biogas. They were very interested in attending this activity and they hope it can be continued.
PEMBANGUNAN DIGESTER PADA KELOMPOK TERNAK DI DESA KINTAMANI BANGLI YANG MENGALAMI PENURUNAN PRODUKSI BIOGAS I N.S. Winaya; R.S. Hartati; I W.G. Ariastina; I G.N. Priambadi; N M.A.E.D. Wirastuti
Buletin Udayana Mengabdi Vol 15 No 3 (2016)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Abstract

Salah satu energi alternatif yang mempunyai potensi besar untuk dikembangkan di daerah pedesaan adalahenergi biogas. Namun, pemanfaatan biogas sampai saat ini masih terbatas pada biogas yang berasal darikotoran hewan, sedangkan pemanfaatan limbah organik yang berasal dari sampah organik yang mencemarilingkungan masih belum dimanfaatkan secara baik.Dalam kegiatan pengabdian masyarakat yang diadakan di Desa Kintamani tepatnya di Dusun GelagahLinggah, dikembangkan reaktor biogas berkapasitas 4 m3 yang dilengkapi dengan sistem pengaduk yangberfungsi untuk meningkatkan keseragaman campuran subtrat (bahan baku). Digester dibangun dari dindingbeton yang berbentuk seperti rongga kedap udara dan berstruktur seperti kubah (bulatan setengah bola) tanpatulangan. Hal ini bertujuan selain untuk menghindari korosi akibat tulangan besi pada beton juga untukmengurangi biaya konstruksi. Instalasi juga dilengkapi dengan sistem penangkapan air (water trap) dansistem pengukur tekanan gas. Setelah subtrat dimasukkan ke dalam digester, dalam kurun waktu kurang dari5 hari perlahan-lahan biogas sudah bisa dihasilkan.Dua digester yang telah dibangun selain dikembangkan untuk menggunakan bahan subtrat pokok yaitukotoran babi dan kotoran sapi bisa juga menggunakan bahan-bahan limbah organik yang ada di pedesaan.Dari kegiatan pengabdian yang dilakukan dapat diketahui bahwa masyarakat kelompok tani tersebut sangatantusias untuk memanfaatkan limbah organik seperti rumput dan tanaman yang dicampur dengan kotoranternak menjadi energi biogas.
PENINGKATAN PRODUKSI BIOGAS KELOMPOK TERNAK DESA TIMUHUN KLUNGKUNG I N.S. Winaya; R.S. Hartati; I. W.G. Ariastina; I B. Alit Swamardika
Buletin Udayana Mengabdi Vol 16 No 1 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Abstract

Dalam upaya memenuhi kebutuhan energi masyarakat khususnya di pedesaan, pembangunan suatu lumbung energi di setiap desa merupakan suatu keharusan. Lumbung energi tersebut hendaknya dibangun dengan memanfaatkan potensi sumber bahan energi setempat, diolah, dan dimanfaatkan sebagai ketersediaan energi, sehingga tercipta desa mandiri energi. Salah satu energi alternatif yang mempunyai potensi besar untuk dikembangkan di desa-desa di Bali adalah energi biogas dari kotoran ternak. Desa yang dipilih sebagai tempat pengabdian adalah Desa Timuhun Kecamatan Banjarangkan Klungkung tepatnya pada dua kelompok tani ternak yaitu Kelompok Ternak Babi Winangun dan Kelompok Ternak Sapi Cempaka. Desa-desa di Klungkung umumnya dan khususnya Desa Timuhun dikenal sebagai kawasan pertanian yang sangat subur sehingga ketersediaan limbah baik dari limbah pertanian maupun limbah ternak sangat berlimpah. Diharapkan dengan pemahaman teknik pencampuran substrat limbah pertanian dan kotoran hewan sebagai bahan biogas, produksi biogas di daerah ini menjadi meningkat dan jumlah petani yang memanfaatkan energi biogas dari limbah pertanian maupun limbah ternak menjadi meningkat, sehingga dapat menjadi acuan pengembangan teknologi biogas di Bali. Pada akhirnya akan dapat dilihat sinergi pemanfaatan biogas dengan agribisnis di Pedesaan
Analisa karakteristik aliran pada fenomena sirkulasi alam fasa-tunggal di Untai FASSIP-01 Mod.2 Nathaniel Ezer Putra Darmawan; G.B. Heru K; Dedy Haryanto; Giarno .; I Nyoman Suprapta Winaya; I Ketut Gede Sugita; Putu Brahmanda Sudarsana; Mulya Juarsa
Jurnal Energi Dan Manufaktur Vol 14 No 2 (2021)
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jJEM.2021.v14.i02.p04

Abstract

FASSIP-01 rectangular loop is a facility which owned by PTKRN-BATAN that used for observe the phenomenon of natural circulation in large-scale. This natural circulation phenomenon will be applied as a passive cooling system in nuclear power plant that will be built up in Indonesia. Some FASSIP-01 experiments have done before, but those experiments show that the fluid flow in FASSIP-01 is not in optimal conditions because there are some errors happened and causes some losses. The second modification of FASSIP-01 rectangular loop has purpose to minimize losses happened in previous modification of FASSIP-01. The purpose of this research is to know the characteristics of flow and the trend of the data from the flow in FASSIP-01 mod.2 rectangular loop before do experiments. Simulations is done by using 2-dimensional images and varying the heating temperature at 353,15 K and 363,15 K and the cooler at temperatures of 278.15 K, 283.15 K, 288.15 K and 293.15 K. Based on the simulation results it is known that the velocity flow rate will increase if the temperature in the heating tank is increased, but will decrease if the temperature in the cooling tank is increased. The results of the calculation of the Reynold Number and Nusselt Number based on the velocity flow rate are 2973,668 the lowest and 5775,356 the highest and for the Nusselt number obtained 17,36 and the highest is 28,091.
Formasi Gas Buang Pada Pembakaran Fludized Bed Sekam Padi I Nyoman Suprapta Winaya; I Nyoman Gede Sujana; I G N P Tenaya
Jurnal Energi Dan Manufaktur Vol 4, No.1 April 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Fluidized Bed Combustion is the best technology for energy conversion of various fuel types such as biomass andwastes with low caloric content fuel. Biomass like rice husk has a great potentiality to develop as a fuel since the availability inIndonesia is abundant. This research aims to analyse gas emission from rice husk using fluidied bed combustion. Investigationwas conducted in a laboratory scale fluidized bed unit by varying operation temperature and gas fluidization. The results showthat emission gas of carbon monoxide and NOx at higher temperature of 600 0C was found lower compared to 500 0C at similarair velocity of 0.05 m/s.
Fuel Feeder of Screw Type for Biomass Fuel I Nyoman Suprapta Winaya; I B Ardhikayana; I Gst. Ngrh.Pt. Tenaya
Jurnal Energi Dan Manufaktur Vol 3, No.2 Oktober 2009
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Fuel Feeder of Screw Type for Biomass Fuel
Co-Firing Sistem Fludized Bed Berbahan Bakar Batubara dan Ampas Tebu I Nyoman Suprapta Winaya; Ida Bagus Agung Darma Susila
Jurnal Energi Dan Manufaktur Vol 4, No.2 Oktober 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Utilization of biomass energy resources as a source of alternative energy in Indonesia is very potential, bagasse is one suchexample. Baggase fuel can becombined with other fossil energy such as coal called Co-firing process to increase its calorificvalue and reduce green house gas emission. Research was conduted on the unit of fludized bed combustion (FBC) laboratoryscale of 50 mm in diameter and 100 mm in height. In this study, an external heating temperature (500 oC and 600 oC) with airsuperficial velocity (Uo) is varied which is 5 cm/s , 9 cm/s,and 13 cm/s. After the reactor reached operating temperature,fluidization air exhaled from below the distributor plate, and pellet fuel bagasse and coal mixture was inserted so that thecombustion occured. The temperature changes and gas emissions generated during the combustion process were analyzed.Based on the investigation, a complete combustion was occurred at velocity of 5 cm/s with operation temperature of 600 oC
Pembuatan Etanol Generasi Kedua Dengan Memanfaatkan Limbah Rumput Laut Eucheuma Cottonii Sebagai Bahan Baku I Gede Wiratmaja; I Gusti Bagus Wijaya Kusuma; I Nyoman Suprapta Winaya
Jurnal Energi Dan Manufaktur Vol 5, No.1 April 2011
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Dissociation energy of diatomic crisis happened in various states in the existing world cleavage has entered areal serious step and concerns so that must soon is searched its the problem solving method, including Indonesia. Source ofpotential feedstock which its the availability is abundance, economy-priced, has not many exploited by people and containssimple sugar sewer structures which can be turned into ethanol is lignocellulosic material which in a few last decade,becomes one of interesting research object to know potency from material - lignocellulose material in producing ethanol.One of water territory commodity of a real Indonesia potency to be developed is sea grass Eucheuma cottonii and rest ofyield cottonii which is not is exploited able to exploited returns to to become one of making feedstock of substitution ethanolof feedstock which during the time is applied like distance, cassava and sugar cane. In this research, approach gone throughin the form of assaying method of direct is field. Assaying is done by comparing various raffle ratio cottonii with yeast atfermentation process with various fermentation time and various delignification to look for comparison of ethanol puritygrade, ethanol volume and fermentation speed by using measuring instrument which so called vinometer.Result fromresearch done with method is upper obtained result as follows : At delignification NaOH 15% and with comparison (1:0,006) for raffle cottonii and yeast is obtained by purity grade, best ethanol volume and fermentation speed. Where highestethanol grade got from treatment biologically that is equal to 15,5% and in physicist equal to 14,8% on day 6 offermentation. So do with ethanol volume yielded is higher where maximum volume capable to be yielded is 245 ml atbiological treatment and 234 ml at physical treatment on day 9of fermentation. Meanwhile highest fermentation speedcapable to be yielded is 0,058 kg/day at physical treatment, and 0,063 kg/day at biological treatment on day 3offermentation so that as a whole ethanol purity grade, ethanol volume and fermentation speed yielded with treatmentbiologically gives higher level result if it is compared to ethanol grade yielded from treatment in physicist.
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
Pengaruh Temperatur Operasi Dan Kecepatan Superfisial Terhadap Komposisi Gas Produser Pada Gasifikasi Fluidized Bed Berbahan Bakar Sampah Terapung I Nyoman Suprapta Winaya; Made Sucipta; I Dewa Made Susila
Jurnal Energi Dan Manufaktur Vol 5, No.1 April 2011
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Management of waste into energy that is economically possible with fluidized bed gasification technology. Gasification is athermo-chemical process that converts biomass/solid waste into producer gas (CO, H2, CO2 and HC) by using air, steam, oxygenor its mixtures as a gasification agent. In a study of floating waste fuel gasification in pellet form with 1,25 cm diameter and 1.25cm height and of 1.22 gram mass, where is used oxygen enriched air as gasification agent. The operating temperature (Top) atreactor selected 500oC and 600oC with superficial velocities (Uo) are 0.105 m/sec, 0.125 m/sec, 0,145 m/sec., and 0,165 m/sec.From the research results showed that by increasing the operating temperature of 500oC to 600oC and increasing the superficialvelocity of 0.105 m/sec to 0.125 m/sec, did not influence directly the increasing of percentage/levels of CO, CO2 and HC gas thatproduced.
Co-Authors A.A. Krisna Wira Putra Ahmad Maulana K Atmiral Ernes Dedy Haryanto G.B. Heru K Giarno . Gusti Ngurah Agung Satria Prasetya D.Y I .G. P. Agus Suryawan I B Ardhikayana I Dewa Gede Ary Subagia I Dewa Made Susila I G.N.A. Satria Prasetya D. Y. I Gede Hendra Gunawan I Gede Wiratmaja I Gusti Bagus Wijaya Kusuma I Gusti Komang Dwijana I Gusti Ngurah Priambadi I Gusti Ngurah Putu Tenaya I Ketut Adi Sugita I Ketut Gede Juli Suarbawa I Ketut Gede Wirawan I Ketut Wijaya I Made Agus Putrawan I Made Agus Putrawan I Made Astika I Made Panji Tirta Prakasa I Made Rajendra I Made Widiyarta I Nengah Simpen I Nyoman Gede Sujana I Nyoman Sujana I Nyoman Winjaya Putra I Putu Angga Sukma Primantara I Putu Angga Yuda Pratama I W BUDIARSA SUYASA I Wayan Ambara Antara I Wayan Arya Darma I Wayan Bandem Adnyana I Wayan Sukerayasa I Wayan Surata I Wayan Widhiada I.G.K. Sukadana I.K.G. Wirawan I.M. Astika Ida Bagus A. Swamardika Ida Bagus Agung Darma Susila Ida Bagus Gde Ardhikayana K.Amerta Yasa Ketut Astawa Luh Putu Ike Midiani Made Sucipta Mulya Juarsa Nathaniel Ezer Putra Darmawan Ni Made Ary Esta Dewi Wirastuti NPG Suardana Petr Zamazal Poppy Diana Sari Putu Brahmanda Sudarsana Putu Lokantara R.S. Hartati Rukmi Sari Hartati Siti Helmyati Temaja, I Wayan Wayan Gede Ariastina Wayan Nata Septiadi