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All Journal Jurnal Keteknikan Pertanian Agrointek Jurnal Teknologi Pertanian agriTECH Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agritechno G-Tech : Jurnal Teknologi Terapan International Journal of Oil Palm

Radite Praeko Agus Setiawan

Departemen Teknik Mesin Dan Biosistem, Fakultas Teknologi Pertanian, Institut Pertanian Bogor, Jl. Raya Darmaga Kampus IPB Darmaga, Bogor 16680

Author-ID : 2649690

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Environmental Science

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KAJIAN KINERJA SIKLON PEMBERSIH DAN PENGARUHNYA TERHADAP KONSENTRASI GAS-GAS HASIL GASIFIKASI TANDAN KOSONG KELAPA SAWIT Joni, Joni; Sebayang, Renaldi; Marpaung, Johana; Setiawan, Radite Praeko Agus; Tambunan, Armansyah Halomoan; Siregar, Kiman
Jurnal Teknologi Pertanian Vol 21, No 3 (2020)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ABSTRAKÂ PPembersihan partikel-partikel pengotor dari gas-gas hasil gasifikasi tandan kosong kelapa sawit merupakan salah satu proses penting yang harus dilakukan untuk mendapatkan gas pembawa energi dengan kemurnian yang lebih baik. Pemisahan partikel-partikel tersebut dari umumnya dilakukan dengan menggunakan siklon. Konstruksi dan kondisi operasi siklon, seperti suhu gas yang masuk, berperan penting dalam menentukan kinerja pemisahan partikel dari gas tersebut. Penelitian ini bertujuan untuk mengkaji pengaruh perubahan suhu gas terhadap kinerja siklon dalam memisahkan partikulat dan tar dari gas-gas hasil gasifikasi tandan kosong kelapa sawit. Hasil kajian menunjukkan bahwa peningkatan suhu gas yang masuk ke siklon mampu memisahkan partikel berukuran 5â€“6 Î¼m di kisaran suhu 200â€“300 Â°C pada efisiensi minimum 50%. Hasil perhitungan efisiensi pengumpulan rata-rata mencapai 98,23%, sedangkan hasil pengukuran adalah 85,56%. Hasil perhitungan dan ekperimen terhadap tekanan jatuh pada siklon, masing-masing, adalah 100,11 dan 87 mmH2 O, berada pada kisaran standar tekanan jatuh yang disarankan. Efisiensi dan tekanan jatuh yang diperoleh menunjukkan bahwa siklon dapat bekerja dengan baik. Hasil kajian menunjukkan bahwa siklon sebaiknya digunakan pada tahap awal dari proses pemisah partikel dari gas hasil gasifikasi, pada saat suhu gas masih tinggiKata kunci : Efisiensi Pengumpulan; Pengurangan Diameter; Penurunan Tekanan; Suhu Gas; TarÂ ABSTRACTÂ Gas purification is one of a very crucial process required to be performed in order to obtain a better quality of gasses produced by grasification of oil palm empty fruit bunches. A cyclone is usually used in the purification process to separate particles and tarss from the gas. Particle separating performance of a cyclone is affected by its construction and operating conditions, such as temperature of the entering gas. The objectives of this study is to examine the effect of the entering gas temperature to the cyclone performance in separating particulates and tar from gases produced by gasification of oil palm empty fruit bunch. The results shows that the cyclone was capable in separating particles with size of 5-6 Î¼m at entering gas temperature range of 200- 300 Â°C, at a minimum efficiency of 50%. The calculated average collection efficiency was 98.23% while the experimental results were 84.56%. Calculation and experimental data on pressure drop within the cylone was 100.11 and 97.0 mmH2 O, respectively, and fall within the required standard pressure drop. The collection efficiency and pressure drop indicated that the cyclone performed well. The study also suggests that cyclone is best to be used at the first row of the purification system for gases produced by gasification of empty fruit bunch since the temperature is still high enoughÂ Keywords : Collection Efficiency; Diameter Cut Size; Pressures Drop; Temperature of Gas; TarÂ

POTENSI PRODUKSI BIOHIDROGEN DARI LIMBAH BIOMASSA PADA PROSES PENCERNAAN ANAEROBIK Bintang Sipartogi Panjaitan; Linda Lestari; Radite Praeko Agus Setiawan; Armansyah Halomoan Tambunan
AGROINTEK Vol 15, No 4 (2021)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v15i4.12480

The sustainability of hydrogen as an energy carrier depends on the production process and the source of raw materials. The choice of substrate in anaerobic digestion process plays an important role to maximize biohydrogen production because it depends on its availability and the composition of substrate. The purpose of this study is to design and construct a prototype reactor for biohydrogen production and to determine the potential of H2 gas production from anaerobic digestion process. This study uses an experimental research method with three operating temperature variations in the reactor, at the range of thermophilic temperatures, i.e. 55°C, 60°C, and 65°C. The substrate used was POME and cow dung, and the process was conducted in 24 hours which is assumed to be the stage of non-methanogenic within the anaerobic process. From this research, the prototype of continuous stirred tank reactor (CSTR) in batch system was made from acrylic, with a capacity of 6 liters biomass waste. Using the reactor, total biohydrogen gas produced during 24 hours process with cow manure as substrate was 0,0932 gram at 55°C; 0,0307 gram at 60°C and 0,0797 gram at 65°C. While, biohydrogen production using POME as substrate was 0,0645 gram at 55°C; 0,1708 gram at 60°C, and 0,0636 gram at 65°C. These results indicate the potentiality of POME and cow manure to produce biohydrogen gas during anaerobic digestion process.

Sistem Pengendali Kemudi Traktor Otomatis Empat Roda pada Pengujian Lintasan Lurus Setya Permana Sutisna; I Dewa Made Subrata; Radite Praeko Agus Setiawan
agriTECH Vol 35, No 1 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This research is the development of autonomous tractor. Although research for automatic tractor have been carried out, but it is still developed to get more precision and optimal method. The purpose of this research is to develop a trajectory control system tractor to follow a straight-line when the working soil tillage. Model that was developed to be able calculate steering angle correction of the tractor position so that the tractor will run on a reference trajectory. Tractor position is determined from RTK DGPS. Tractor direction is calculated from two position of tractor. Control algorithm consists of the arrangement of commands to control the tractor move the reference trajectory. Simulations were performed to determine controlling algorithm ability the tractor to follow reference trajectory. The algorithm ability is tested in real conditions on a straight- line path along 30 m with a speed of tractor 0.5 m/s in a ﬁeld. The test results obtained in the ﬁeld of performance accuracy rate is 97.13% control and average deviation with reference trajectory is 8.62 cm.ABSTRAKPenelitian ini merupakan penelitian pengembangan traktor otomatis. Meskipun penelitian mengenai traktor otomatis telah banyak dilakukan, namun pengembangan masih terus dilakukan untuk mendapatkan presisi yang lebih tinggi dan metode yang optimal. Tujuan penelitian ini adalah mengembangkan sistem pengendali kemudi traktor agar dapat mengikuti jalur kerja lintasan lurus ketika melakukan kegiatan pengolahan tanah. Model yang dikembangkan harus mampu menghitung sudut setir koreksi dari posisi traktor agar traktor mampu berjalan pada lintasan lurus yang telah ditentukan. Arah pergerakan traktor diketahui dari perbandingan dua posisi traktor yang diperoleh dari RTK DGPS. Algoritma pengendalian terdiri dari susunan perintah-perintah untuk mengendalikan traktor bergerak mengikuti lintasan acuan. Simulasi dilakukan untuk mengetahui kemampuan algoritma yang telah dibuat untuk mengendalikan traktor agar dapat berjalan mengikuti lintasan acuan. Kemampuan algoritma tersebut kemudian diuji dalam kondisi riil dilapangan pada lintasan lurus sepanjang 30 m dengan kecepatan traktor 0.5 m/s. Hasil pengujian di lapangan diperoleh tingkat akurasi kinerja kontrol sebesar 97.13% dan besar simpangan rata-rata terhadap lintasan acuan sebesar 8.62 cm.

Cutting Torque and Blowing Effect of Slanted Blade Model for Rotary-Type Mower I Nengah Suastawa; Radite Praeko Agus Setiawan; Prima Sanjaya
Jurnal Keteknikan Pertanian Vol. 17 No. 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.1.%p

Rotary-type mower is commonly used for cutting turfgrass as a part of landscape maintenance. Cutting torque and quality to turf surface resulted by cutting are two important factors that have to be considered in designing rotary-type mower blades. The objectives of this research are to design and build a slanted blade model, and to study its cutting torque, blowing effect, and friction between blades and turf surface on a several rotational speeds, slant angles and blade types. The blade model was tested on a specially designed turf-bin test apparatus.

Getaran Akibat Gangguan Secara Alami Soeharsono .; Radite Praeko Agus Setiawan
Jurnal Keteknikan Pertanian Vol. 22 No. 2 (2008): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.022.2.%p

This paper discusses the phenomenon of self-excited vibration in some physical model including its applications in some different engineering field. The referred physical model include the impact damper and its application for damping the vibration of shear building, chatter phenomenon on machine tools, ride comfort on agricultural machinery and stick-slip phenomenon and its benefit on vibration subsoiler. It is intended that this paper could provide a global overview on phenomenon-of self-excited vibration. Keywords: self-excited, vibration, stick-slip, subsoile Diterima: 03 Januari 2008; Disetujui: 12 Mei 2008

Rancang Bangun dan Uji Kinerja Mekanisme Pengendali Otomatis Pedal Rem dan Tuas Transmisi Maju-Mundur pada Traktor Roda Empat I Dewa Made Subrata; Radite Praeko Agus Setiawan; Setya Permana; Muhammad Sigit Gunawan; Andreas .
Jurnal Keteknikan Pertanian Vol. 1 No. 1 (2013): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.01.1.%p

AbstractMost of the four wheeled tractors were operated manually for many agricultural applications. Therefore the operator’s fatigue during operating tractor can’t be avoided. To decrease operator’s fatigue it was necessary to operate tractor automatically for forward and backward motion. This research focus on the automatic backward motion and decrease turning radius by modify the brake pedal and forward-backward transmission mechanisms, which were controlled using DC motor with H-bridge actuator. Functional test was done by lifting up the tractor so that it was not move sideways while the tires were rotated. Performance test was done on the field to know the ability of the tractor to move forward and backward automatically and to know the turning radius when the left or right brake pedal was pushed down automatically. Experimental result showed that the time required to push the brake was about 0.47 s for left brake and 0.61 s for right brake. Field test result showed that the tractor was able to control automatically for forward motion with average speed of 0.62 m/s, backward motion with average speed of 0.63 m/s, to turn left with average turning radius of 2.2 m, and turn right with average turning radius of 2.4 m.Keyword: automation, forward-backward transmission, brake pedal.AbstrakSampai saat ini sebagian besar traktor roda empat masih dioperasikan secara manual untuk penerapan di bidang pertanian. Dengan demikian kelelahan operator dalam mengoperasikan traktor tersebut tidak dapatdihindari. Untuk menurunkan tingkat kelelahan operator maka perlu diupayakan mengoperasikan traktor secara otomatis untuk gerakan maju maupun mundur. Otomatisasi gerakan maju telah dilakukan padapenelitian sebelumnya. Penelitian ini lebih difokuskan pada otomatisasi gerakan mundur dan memperkecil radius belok dengan memodifikasi mekanisme pengendali rem dan mekanisme pengendali transmisi majumundur. Kedua mekanisme tersebut dikendalikan menggunakan motor DC dengan aktuator H-bridge. Uji fungsional dilakukan di laboratoriun dengan cara mengangkat traktor sehingga roda tidak menapak dan traktor tidak bergerak meskipun rodanya berputar. Pengujian kinerja mekanisme juga dilakukan di atas lahan kering untuk mengetahui kemampuan bergerak maju dan mundur secara otomatis dan berputar balik melalui penekanan pedal rem secara otomatis. Hasil pengujian fungsional menunjukkan mekanisme bekerja dengan baik dengan waktu penekanan rem 0.47 s untuk rem kiri dan 0.61 s untuk rem kanan. Hasil pengujian lapangan menunjukkan bahwa traktor dapat dikendalikan secara otomatis untuk bergerak maju dengan kecepatan rata-tara 0.62 m/s, bergerak mundur dengan kecepatan rata-rata 0.63 m/s, berputar dengan jari-jari 2.2 m untuk rem kiri dan 2.4 m untuk rem kanan.Kata Kunci: otomatisasi, transmisi maju-mundur, pedal rem.Diterima: 11 Maret 2013; Disetujui: 18 Juni 2013

Perkembangan Desain dan Kinerja Aerator Tipe Kincir Samsul Bahri; Radite Praeko Agus Setiawan; Wawan Hermawan; Muhammad Zairin Yunior
Jurnal Keteknikan Pertanian Vol. 2 No. 1 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.1.%p

AbstractPaddle wheel aerator widely used in aquaculture because it has the function of aeration and circulation as well as their construction is simple. However, its efficiency is not maximized so it is still expensive inoperation because of the large power consumption. Aerator performance is an important factor in the selection and use of the aerator as it relates to investment and operating cost, so the paddle wheel aeratordesign development and improvement of the performance of the operation is still possible to do. Developing of three-dimensional blade with the optimum geomerty and blade development that can move is a solution that can be done. The study aims to review the principle of aeration, performance test, evaluation criteria, and performance comparison aerator design development that have been made so as to provide an alternative to the developing of performance improvement paddle wheel aerator. This article is a summary of the ''state of the art'' design and performance of a paddle wheel aerator development.Keywords : design, aeration, paddle wheel, dissolved oxygen, efficiencyAbstrakAerator kincir banyak digunakan dalam budidaya air karena mempunyai fungsi aerasi dan sirkulasi yang baik serta kontruksinya sederhana. Namun demikian, efisiensinya belum maksimal sehingga masih mahal dalam pengoperasian karena besarnya pemakaian daya listrik. Kinerja aerator merupakan faktor penting dalam pemilihan dan penggunaan aerator karena berhubungan dengan biaya investasi dan operasional, sehingga pengembangan desain aerator kincir dan peningkatan kinerja pengoperasian masih memungkinkan untuk dilakukan. Pengembangan sudu tiga dimensi dengan geometri optimumnya dan pengembangan sudu yang dapat bergerak merupakan solusi yang dapat dilakukan. Kajian ini bertujuan menelaah kembali prinsip aerasi, uji kinerja, kriteria evaluasi, perbandingan kinerja dan perkembangan desain aerator yang sudah dilakukan sehingga dapat memberikan alternatif pengembangan guna peningkatan kinerja aerator kincir. Artikel ini merupakan rangkuman dari “state of the art” desain dan kinerja aerator kincir untuk penggunaan budidaya air.Kata kunci: desain, aerasi. kincir, kelarutan oksigen, efisiensi.Diterima: 12 November 2013; Disetujui:15 Januari 2014

Mekanisme Penangkap Tandan Buah Sawit dan Pemanfaatan Energi Potensialnya Rusnadi .; Wawan Hermawan; Radite Praeko Agus Setiawan
Jurnal Keteknikan Pertanian Vol. 2 No. 2 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.2.81-88

AbstractIn oil palm harvesting, falling fruit bunches have a considerable potential energy, which can be captured and used to power the wheelbarrow in evacuating the fruit bunches. This study was conducted to design a mechanism of oil palm fresh fruit bunches catchment and its potential energy utilization. The potential energy of falling fruit bunches during oil palm harvesting that stored in the flat spiral spring, and used to drivethe wheelbarrow. The actual energy potential and torque performance of flat spiral spring was measured by using a torque and potential energy measuring apparatus. The results showed that the potential energyfrom falling fruit bunches could store in the flat spiral spring mechanism, with storage efficiency of 39.39%. By means of 1.5 rotation of flat spiral spring, the maximum torque of the flat spiral spring was 53.35 Nm.The utilization of potential energy that stored in the flat spiral spring has been successfully used to drive the wheelbarrow, with utilization efficiency of 80.39%. By using the potential energy of 38.64 J, wheelbarrow could move as far as 0.41 m to evacuate 48 kg of total weight loads.Keywords: oil palm, harvesting,potential energy, catchment mechanism, wheelbarrow.AbstrakDalam pemanenan kelapa sawit, tandan buah yang jatuh memiliki energi potensial yang cukup besar, yang dapat ditangkap dan digunakan sebagai daya penggerak angkong dalam mengevakuasi tandan buah segar (TBS). Penelitian ini dilakukan untuk merancang sebuah mekanisme penangkap TBS yang sekaligus dapat menyimpan energi potensialnya. Energi potensial yang terkandung pada TBS saat pemanenan disimpan pada flat spiral spring dan akan dimanfaatkan sebagai daya untuk menggerakan angkong. Torsi dan energi potensial pada flat spiral spring diukur secara aktual melalui sebuah aparatus pengukur torsi dan energi potensial untuk pegas tipe spiral. Dari hasil penelitian menunjukan bahwa energi potensial TBS dapat disimpan pada flatspiral spring dengan efesiensi penyimpanan sebesar 39.39%. Melalui input 1.5 putaran pada flat spiral spring, torsi maksimum yang dapat dicapai oleh flat spiral spring adalah sebesar53.35 Nm. Bentuk pemanfaatan energi yang tersimpan dalam flat spiral spring telah berhasil dimanfaatkan untuk menggerakan roda angkong dengan efisiensi pemanfaatan sebesar 80.39%. Energi potensial sebesar 38.64 J telah dapat menggerakan angkong sejauh 0.41 m dengan bobot total mesin seberat 48 kg.Kata kunci : kelapa sawit, pema nenan, energi potensial, mekanisme penangkap, angkong.Diterima: 19 Juni 2014 ;Disetujui: 22 September 2014

PERKEMBANGAN KONSEP PENURUNAN TAHANAN TARIK PADA PENGEMBANGAN DISAIN BAJAK SUBSOIL GETAR Yazid lzmi lntara; Radite Praeko Agus Setiawan
Jurnal Keteknikan Pertanian Vol. 21 No. 2 (2007): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.021.2.%p

Abstract From many experiments with different kinds of tiIIage tools it is well known that an oscilating or vibrating movement of a tool can have a considerable influence on the draft required. Subsoiler represent tools of deep tillage, the function of subsoil plough to cutting deep tillage and to breaking hardpan soil. The hardpan soil can hinder drainage, aeration and pursue spreading of the soil nutrition. Therefore in split/cut the hardpan layer require by big enough of energy. This operation requires heavy-duty tractor because of high draft consumption, especially for breaking subsoil up to depth of 50 cm. Vibratory technique is one of the methods, which could be applied in order to reduce draft. On the other hand reduced draft can used by vibration, mechanism of vibration exploitedly with rotation of PTO changed become translation movement. However that vibration can greatly reduce the draft force needed, to pull a blade or tine trough soil, but this can only be achieved at the expense of an increase in the total powor consumed. Diterima: 12 Pebruari 2007, Disetujui:. 3 Mei 2007

Pengembangan Mesin Penanam dan Pemupuk Jagung Terintegrasi dengan Pengolahan Tanah Alur Agustami Sitorus; Wawan Hermawan; Radite Praeko Agus Setiawan
Jurnal Keteknikan Pertanian Vol. 3 No. 2 (2015): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

The prototype of integrated corn planter and fertilizer applicator for strip tillage has been developed. The development was done by using wheel axis of hand tractor for driven rotor fertilizer applicator and metering device corn planter. Planting furrows were made into two furrows on a single pass with strip tillage. The objective of this study was to develop and to conduct performance test of the corn planting and fertilizing for strip tillage. Stationer test result showed that the fertilizer applicator and corn planter performance could be metering 20.71 g/m NPK fertilizer and 1-3 seeds of corn per planting hole respectively. Field test result showed that the fertilizer applicator and corn planter performance could be metering 15.88 g/m NPK fertilizer and 1-2 seeds of corn per planting hole respectively. Mean seed spacing was 21.5 cm which was longer than the theoretical seed spacing (20 cm). Fertilizer and seed hopper capacity were 16.53 kg and 1kg respectively. Effective fieldcapacity was 0.147 ha/h (low-1)and 0.350 ha/h (low-2) and efficiency for respective speed was 76.24% and 83.78%.

Co-Authors Abdul Azis Adhiasta Faris Setiabudi Agustami Sitorus Agustami Sitorus, Agustami Andreas . Aris Purwanto Armansyah H. Tambunan Armansyah Halomoan Tambunan Azmi Asyidda Mushoffa Bintang Sipartogi Panjaitan Budi Priyonggo Diang Sagita Diang Sagita Eko Fajar Nugroho Furqon I Dewa Made Subrata I Nengah Suastawa Joni Joni Joni Junita Tarigan Jusran Jusran Kiman Siregar Kiman Siregar Kiman Siregar, Kiman Lenny Saulia Linda Lestari Liyantono . Marpaung, Johana Muhammad Rizal Muhammad Sigit Gunawan Muhammad Zairin Yunior Muqroob Tajalli Obie Farobie Paulus Sukusno Pomalingo, Moh Fikri Prima Sanjaya Raju, Muhammad Rusnadi . Samsul Bahri Sebayang, Renaldi Setya Permana Setya Permana Sutisna Soeharsono . Syahrial Sabaniah Syaputra, Frandy Mey Tatun Hayatun Nufus Tineke Mandang Ubaidillah . Wawan Hermawan Wawan Hermawan Wawan Hermawan Yazid lzmi lntara

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