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All Journal Jurnal Rekayasa Hijau Jurnal Rekayasa Energi dan Mekanika Jurnal Ilmiah Teknik Mesin Poros METAL : Jurnal Sistem Mekanik dan Termal
Noviyanti Nugraha
Institut Teknologi Nasional Bandung, Jl. P.H.H. Mustofa No.23, Bandung, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Perancangan Alat Pembuangan Abu Pada Gasifier Sistem Kontinu Berbahan Bakar Tongkol Jagung Noviyanti Nugraha; Muhammad Pramuda Sirodz; Benardino Hadiwijaya
Jurnal Rekayasa Energi dan Mekanika Vol 1, No 2 (2021): JREM
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/JREM.v1i2.102

Abstract

Abstrak   Indonesia membutuhkan energi alternatif yang berpeluang besar untuk dikembangkan pemanfaatannya, salah satunya adalah energi biomassa yang berasal dari jagung. Pada penelitian sebelumnya sudah dirancang dan dibuat sistem gasifikasi kontinu, tetapi masih terdapat kekurangan pada pemisahan abu setelah pembakaran. Tujuan dari penelitian ini adalah untuk merancang sistem pemisah abu pada sistem gasifikasi kontinu sehingga didapatkan spesifikasi dari sistem pemisah abu tersebut. Sistem pemisah abu yang dirancang adalah screw conveyor untuk memisahkan bottom ash dan siklon untuk memisahkan fly ash. Hasil perancangan diperoleh spesifikasi yang dibutuhkan yaitu diameter screw sebesar 6 inci, motor listrik yang digunakan memiliki daya 1 HP, putaran screw sebesar 0,31 rpm dan poros screw conveyor sebesar 2 inci. Dengan standar yang sudah diberikan, dengan mengasumsikan diameter body siklon sebesar 0,1 m maka diperoleh seluruh dimensi siklon. Dengan diameter sebesar 0,1 m secara perhitungan didapat efisiensi siklon sebesar 78% dan secara simulasi menggunakan software ANSYS didapat efisiensi sebesar 80%. Kata kunci: tongkol jagung, gasifikasi, screw conveyor, siklon, ANSYS Abstract   Indonesia needs alternative energy that has a great opportunity to be developed its utilization, one of which is biomass energy derived from corn. In previous studies, a continuous gasification system has been designed and built, but there are still deficiencies in the separation of ash after combustion. The purpose of this research is to design an ash separator system in a continuous gasification system so that the specifications of the ash separator system can be obtained. The ash separator system designed is a screw conveyor for separating bottom ash and cyclones for separating fly ash. The design results obtained the required specifications,  the screw diameter is 6 inches, the electric motor used has a power of 1 HP, the screw rotation is 0.31 rpm and the screw conveyor shaft is 2 inches. With the standards that have been given, assuming the diameter of the cyclone body is 0.1 m, all the dimensions of the cyclone are obtained. With a diameter of 0.1 m, the calculation is that the cyclone efficiency is 78% and by simulation using the ANSYS software, the efficiency is 80%. Key words: corn cobs, gasification, screw conveyor, cyclone, ANSYS
Rancang Bangun Mesin Pemanas Akrilik Tipe Turbular Skala Industri Kecil Noviyanti Nugraha; M. Khenbakti; Rakha Rakha; Teguh Siswanto; Muraz Muraz; Rizkia Munajat
METAL: Jurnal Sistem Mekanik dan Termal Vol 5, No 1 (2021): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3422.639 KB) | DOI: 10.25077/metal.5.1.23-32.2021

Abstract

Acrylic is a material that is often used as a substitute for glass because it has the advantage that it is not easily broken and is lighter than glass. One of the processes of making objects made from acrylic is heating. The heating process that has been carried out by small industries is usually acrylic material heated manually by spraying fire from a gas-tube or using a small heater so that the size of acrylic that can be heated is limited, both in terms of length and thickness. The purpose of this research is to design and manufacture an acrylic heating machine that can be used up to a dimension of 600 mm wide and unlimited in length, and can heat up to a thickness of 10 mm with a continuous heating process and is relatively short. The design and manufacture includes the design of the heating system, the selection of the heater to be used, the design and manufacture of the acrylic table, the drive system and the frame. The test parameters include the maximum heating temperature, the acrylic bending temperature and the heating time. The result of the research is an acrylic heating machine that uses three straight turbular heaters with a 300 Watt heater each, capable of heating acrylic with a thickness of up to 10 mm as the initial process for the bending stage, at a heating dimension of 60 cm wide and unlimited in length. The suitable heating temperature for the bending process is 150oC. The average heating time for the thickness 3mm is 91.5 seconds (1.5 minutes), 5mm (2.9 minutes) is 174.2 seconds and 10 mm is 451.3 seconds (7.5 minutes).
Pengujian Kinerja Dan Modifikasi Reaktor Downdraft Gasifikasi Biomassa 100 kW Muhammad Ridwan; Indradjaja Indradjaja; Noviyanti Nugraha; Irfan Taufik
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 2, No 2 (2018)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v2i2.2394

Abstract

ABSTRAKGasifikasi adalah suatu proses konversi senyawa yang mengandung karbon untuk mengubah material baik cair maupun padat menjadi bahan bakar gas mampu bakar melalui proses pembakaran dengan suplai udara terbatas. Reaktor tempat terjadinya proses gasifikasi disebut gasifier. Gas hasil dari proses gasifikasi disebut syngas. Pada penelitian sebelumnya telah dirancang reaktor gasifikasi dengan menggunakan kotoran sapi sebagai bahan bakar proses gasifikasi. Tipe reaktor yang digunakan adalah tipe downdraft. Tujuan dari penelitian ini adalah menguji performa mesin, menganalisa hasil pengujian dan memodifikasi rancangan reaktor gasifikasi downdraft kapasitas 100 kW. Dari pengujian pertama, diperoleh hasil pengujian yaitu temperatur di dalam ruang pembakaran kurang dari 500°C serta masih terdapat kebocoran pada komponen reaktor. Maka di perlukan modifikasi agar temperature yang ditargetkan yaitu diatas 500°C tercapai dan memperbaiki kekurangan lainnya. Modifikasi yang dilakukan meliputi bagian atas yaitu hopper, pemasangan instalasi pipa 2 in, serta pembuatan kembali saringan ash grate. Setelah melakukan modifikasi, dilakukan pengujian kembali, Hasil pengujian setelah dimodiifikasi diperoleh temperatur antara 550 oC – 600oC.Kata kunci : reaktor, downdraft, gasifikasi, kotoran sapi, pengujjianABSTRACTGasification is a process of converting carbonaceous compounds to convert both liquid and solid materials into fuel gas capable of burning through a combustion process with limited air supply. The reactor where the gasification process occurs is called a gasifier. The resultant gas from the gasification process is called syngas. Previous studies have designed gasification reactors using cow dung as a fuel for gasification processes. The type of reactor used is the downdraft type. The purpose of this study is to test the performance of the engine, analyze the test results and modify the down kaft gasification reactor design capacity of 100 kW. From the first test, obtained the test results that the temperature in the combustion chamber is less than 500°C and there is still leakage in the reactor component. So in need of modifications to the targeted temperature that is above 500°C achieved and fix other deficiencies. Modifications made include the top of the hopper, installation of 2-in pipe installation, as well as remaking ash grate filter. After modification, re-testing, the test results after modified temperature obtained between 550 oC - 600oC.Keywords: reactor, downdraft, gasification, cow dung, test.
Rancang Bangun Mesin Pencacah Sampah Organik Rumah Tangga Noviyanti Nugraha; Dany Septyangga Pratama; Sopan Sopian; Nicolaus Roberto
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 3, No 3 (2019)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v3i3.3428

Abstract

ABSTRAK Proses pemotongan sampah menjadi ukuran yang lebih kecil, dapat mempercepat proses pengomposan, sehingga diperlukan mesin yang mampu mencacah sampah organik sisa rumah tangga. Penelitian ini bertujuan untuk merancang, membuat serta menguji mesin pencacah organik yang mampu mencacah sisa sampah organik rumah tangga yang memiliki karakteristik basah dan alot, dengan minim polusi baik polusi pencemaran udara maupun polusi suara. Perancangan dan pembuatan meliputi komponen: poros, pisau tetap, pisau putar, rangka, casing, hopper, motor listrik serta sistem transmisi. Pengujian meliputi persentase sampah tercacah, kapasitas output hasil cacahan, dan pengujian tingkat polusi suara. Hasil perancangan dan pembuatan mesin pencacah sampah ini memiliki dimensi 490x455x950mm dengan pisau pencacah yang terdiri dari 12 pisau putar dan 3 pisau tetap, berukuran panjang 100mm tebal 3mm. Transmisi daya menggunakan V-belt type A no 55 dan 2 buah pulley yaitu pulley berukuran 2 inch dan pulley berukuran 8 inch dengan masing-masing untuk satu alur. Daya motor listrik 1 Hp. Bahan poros ST-37 dengan panjang dan diameter 600mm dan 22mm,. Dimensi hopper output 170x170mm dengan kemiringan 20o. Dimensi saringan 230x380x 2,5 mm dengan lubang ∅3mm dan lubang pembuangan air ∅ 25,4????????. Mampu mencacah sampah organik sisa rumah tangga hingga 90% tercacah dan kapasitas output sampah sebesar 70%-80%, Tingkat kebisingan maksimum 90 db, masih didalam batas yang distandarkan yaitu 94 db. Kata Kunci: Sampah Organik, Mesin Pencacah Sampah, Kapasitas Cacahan
PENGUJIAN PERFORMA REAKTOR DOWNDRAFT BIOMASSA KOTORAN SAPI Muhammad Ridwan Ridwan; Noviyanti Nugraha Nugraha
Jurnal Ilmiah Teknik Mesin POROS Vol 16, No 2 (2018): Jurnal Ilmiah Teknik Mesin Poros
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.769 KB) | DOI: 10.24912/poros.v16i2.11650

Abstract

Biomass power plants are electricity generators with alternative energy that utilize organicmaterials, in this case cow dung. The cow dung is then processed to produce syngas. Syngas is used as fuelto turn turbines. In previous studies, a cow manure gasification reactor was designed and manufactured.This reactor is part of a biomass power plant system (PLTBm) which is made separately. The power outputtarget of this PLTBm is 370 kW. The purpose of this study was to examine the performance of the downdraftreactor of cow dung biomass, namely discharge, temperature, and analyze the gas content released by thereactor so that the power that can be generated by the reactor can be obtained. The test results obtained acombustion chamber temperature of 580°C and a discharge of 0.285 m3/s. The composition of the outputgas is acetylene 58.16%, hexane 27.66%, butane 6.38%, and methane 7.8%. From the calculation results,the power generated by the reactor is 342 kW.
Kinerja Mesin Pencacah Sampah Plastik dan Akrilik Tipe Crusher 9 Pisau Gerak Noviyanti Nugraha; Wildan Angga Saputra; Teguh Setya Permana
Jurnal Rekayasa Energi dan Mekanika Vol 2, No 2 (2022): JREM
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/JREM.v2i2.94

Abstract

ABSTRAK Pada penelitian sebelumnya telah dirancang dan dibuat mesin pencacah sampah plastik HDPE sekaligus digunakan untuk sampah akrilik dengan ketebalan diatas 1mm, sebagai bagian dari proses daur ulang sampah plastik dan akrilik.  Tujuan dari penelitian ini menguji kinerja mesin pencacah sampah plastik dan akrilik ketebalan 2-3mm, serta memperoleh fenomena dari pencacahan pada variasi ketebalan sampah plastik HDPE 1,00-1,30mm. Putaran motor yang digunakan1500, 2000, 2500 dan 3000 rpm. Dari hasil pengujian variasi ketebalan 1,00 mm hingga 1,30 mm, kenaikan ketebalan tidak mempengaruhi kapasitas secara signifikan. Hasil pengujian pencacahan sampah akrilik; rendemen pencacahan rata-rata sebesar 98,9 %, efisiensi pencacahan 72,3 %. Sedangkan dari hasil pengujian sampah plastik rendemen pencacahan rata-rata sebesar 88% dan efisiensi pencacahan 80%. Hasil pengujian kinerja Efisiensi pencacahan plastik lebih tinggi 10,6%  dari akrilik.  Parameter kinerja dari mesin pencacah ini sudah diatas standar SNI. Kata kunci: Pencacah Akrilik, Pencacah Plastik HDPE, Kinerja Mesin, Pengaruh ketebalan ABSTRACT In previous research, a chopping machine was designed and built to chop HDPE plastic waste and acrylic waste with a thickness above 1mm, as part of the plastic and acrylic waste recycling process. The purpose of this study was to test the performance of plastic and acrylic waste chopping machines with a thickness of 2-3mm, and to obtain phenomena from counting the thickness variations of HDPE plastic waste 1.00-1.30mm. Motor rotation used 1500, 2000, 2500 and 3000 rpm. From the test results for variations in thickness from 1.00 mm to 1.30 mm, the increase in thickness does not significantly affect capacity. The results of the acrylic waste enumeration test; the average yield of enumeration was 98.9%, the efficiency of enumeration was 72.3%. Meanwhile, from the results of plastic waste testing, the average yield of enumeration was 88% and the efficiency of enumeration was 80%. Performance test results The efficiency of plastic shredding is 10.6% higher than acrylic. The performance parameter of this chopper is above the SNI standard.Keywords: Acrylic Counter, HDPE Plastic Counter, Machine Performance, Thickness Effect
Co-Authors Benardino Hadiwijaya Dany Septyangga Pratama Indradjaja Indradjaja Irfan Taufik M. Khenbakti Muhammad Pramuda Sirodz Muhammad Ridwan Muhammad Ridwan Ridwan Muraz Muraz Nicolaus Roberto Rakha Rakha Rizkia Munajat Sopan Sopian Teguh Setya Permana Teguh Siswanto Wildan Angga Saputra