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Simulasi Performa Turbin Propeller Dengan Sudut Pitch Yang Divariasikan Pribadyo Pribadyo; Hadiyanto H; Jamari J
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 6, No 1 (2020): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (675.908 KB) | DOI: 10.35308/jmkn.v6i1.2257

Abstract

 Propeller turbine performance can be improved by changing the turbine design parameters. One method that was developed is to vary the blade angle on the runner's blades. Analysis of the influence of blade angle on propeller turbine performance is done through numerical simulations based on computational fluid dynamics. The simulation is done with variations of propeller turbine blade angles of 180, 230, and 280 at flow rates of 0.08 m/s to 0.5 m/s. Simulation results show turbines with 250 blade angles have the best performance compared to turbine blade angles of 230 and 280. While the turbine blade angles of 230 tend to have higher performance compared to angles of 280 even though both have peak values for the corresponding power coefficient. Keywords—Propeller turbine, runner blade, pitch angle, CFD simulation
Perencanan Ulang Transmisi Daya Mekanik Mesin Penghancur Es Balok Di Pasar Bina UsahaKota Meulaboh T Azwar; Pribadyo Pribadyo
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 1, No 1 (2015): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1008.199 KB) | DOI: 10.35308/jmkn.v1i1.828

Abstract

The process of ice crusher bars in the shredder ice used in the fish market building efforts in Meulaboh is not optimal anymore work given that there are parts of the engine components that are no good in this case can also be seen from at least the production of ice produced at less than 24 kg / min, and based on the observations of the author of the engine sound is also louder and the machine is not standard anymore. Starting from the problem, the purpose of this planning the authors feel the need to plan the re-shredder ice blocks into better and more efficient work. in general usually machine consists of three main parts that work. Wherein the third part is the driver, the successor system power (power transmission) and the driven part. The initial step in planning is to conduct market surveys of business building in the city of Meulaboh. The next step is to plan and calculate the component elements of the machine, planning and calculation performed on the shaft, pulley-belt and bearing on tools that have been designed. The final step in the planning process is made by evaluating the results of calculations performed. Obtained from the calculation of the production capacity amounted to 33, 411 kg / minute appropriate. Keywords: ice crusher machine, shafts, belts, pulleys, bearings
Rancang Bangun Alat Pengolah Limbah Plastik Berbahan Bakar Biomassa Pribadyo Pribadyo; Teguh Firmanto
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 2, No 1 (2016): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (683.375 KB) | DOI: 10.35308/jmkn.v2i1.849

Abstract

Plastic is a material that is widely used in daily life, because it has advantages such as strong, lightweight and stable. But the plastic on the market today are synthetic polymers made from petroleum are difficult to decompose in nature. Judging from the nature of the plastic constituent is composed of components of petroleum hydrocarbons, the plastic waste has the potential to be converted into fuel. The technique used to restore the plastic material is by breaking the carbon chains or polymers that become hydrocarbons. The purpose of the design tool processing waste plastics into fuel oilfired biomass is to design a waste treatment plant in the plastic to produce oil (fuel), making the design drawings of the equipment is planned, determine the materials to be used, make and assemble the apparatus according to the design the planned. In pyrolysis occurs tool decomposition process of organic compounds on the materials. This decomposition caused by the heating process without dealing directly with the air with little oxygen. Waste processing equipment plastic that will be planned to include the design of the combustion chamber, reactor design, pipeline design fence steam, design connecting pipe between the reactor and the pipe fence steam. Extensive volume of reactor tubes obtained then has acquired equipment capacity 4 kg / production. Keywords: plastic waste, biomass, pyrolysis, design, oil
Pengaruh Waktu dan Temperatur Pemanasan Pada Pengujian Alat Pengolahan Sampah Plastik Menjadi Bahan Bakar Minyak Pribadyo Pribadyo; Teguh Firmanto; Desy Saputra; Mardianto Mardianto
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 1, No 1 (2015): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (795.545 KB) | DOI: 10.35308/jmkn.v1i1.829

Abstract

Plastics are polymers long chains of atoms that bind to each other. This chain form many repetitive molecular units, or "monomers". Plastics are formed from organic condensation or addition polymers and may also comprise other substances to improve performance or economics. Judging from the nature of the plastic that is composed of constituent components of petroleum hydrocarbons, the plastic waste has the potential to be converted into fuel. The aim of this study was to determine the influence of time and temperature on the quality of oil products from the pyrolysis process PP and LDPE plastic waste. The technique used to restore the plastic material is by breaking the carbon chains or polymers that become hydrocarbons. And for the decomposition technique to be used is the method of pyrolysis. Pyrolysis is a process of decomposition of the material at high temperatures in the absence of air or with air is limited. Decomposition of the pyrolysis process is also often referred to devolatilization. The main products of pyrolysis can be produced are charcoal (char), oil, and gas. On pyrolysis occurs tool decomposition process of organic compounds on the materials. This decomposition caused by the heating process without directly related to the air with little oxygen. Results of testing tools to test materials for a type of plastic LDPE (low-density polyethylen) at temperatures of 246 0C combustion chamber, reactor temperature 114 0C, 94 0C temperature of the first condenser and the second condenser temperature 61 0C with a duration of 57 minutes burning oil expenditures occur. At 345 0C temperature in the combustion chamber, the reactor temperature 113 0C, 99 0C temperature in condenser I, temperature 63 0C in condenser II with the duration of 93 minutes burning of oil does not produce. With the test material for plastic types PP (Polypropylene) at temperatures of 239 0C combustion chamber, reactor temperature 114 0C, 94 0C temperature of the first condenser and the second condenser temperature 57 0C with a duration of 42 minutes burning oil expenditures occur. At 330 0C temperature in the combustion chamber, the reactor temperature 121 0C, 105 0C temperature in condenser I, 59 0C temperature in condenser II with the duration of 99 minutes burning of oil does not produce.   Keywords: Waste plastic, temperature, pyrolysis oil, Testing
Uji Kemampukerasan Baja Tahan Karat AISI 304 Herdi Susanto; Pribadyo Pribadyo; Rahmad Novizar
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 3, No 1 (2017): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.36 KB) | DOI: 10.35308/jmkn.v3i1.859

Abstract

Baja tahan karat AISI 304 secara umum digunakan pada mesin-mesin konstruksi terapan sederhana seperti poros propeler kapal nelayan, mesin penghancur es, pemeras tebu dan lainnya, dikarenakan ketahanan korosifnya yang baik, disisi lain kelemahan AISI 304 pada kondisi lapangan sering mengalami deformasi dan kepatahan dengan putaran yang relatif tinggi. Untuk mengatasi hal tersebut dapat dilakukan usaha menambah nilai kekerasan permukaan dengan melakukan pengujian Jominy Hardenability. Pengujian Jominy yang dilakukan pada spesimen uji dengan standar ASTM A255-02, dengan laju air pada nozzle 45 liter/menit, pada temperature 8500C dan holding time 15-20 menit. Hasil pengujian menunjukkan bahwa nilai awal kekerasan permukaan pada ujung quenching sisi A adalah 187 HB dan pada sisi B adalah 170 HB. Nilai kekerasan permukaan setelah di normalizing pada ujung quenching sisi A adalah 182 HB dan pada sisi B adalah 188 HB. Maka terjadi penurunan kekerasan pada sisi A sebesar 5 HB, dan terjadi peningkatan kekerasan pada sisi B sebesar 18 HB. Setelah di uji Jominy nilai kekerasan pada sisi A adalah 227 HB, dan pada sisi B adalah 223 HB. Pada pengujian jominy terjadi peningkatan kekerasan pada ujung sisi A sebesar 45 HB, dan peningkatan kekerasan pada sisi B sebesar 35 HB. Hasil penelitian ini dapat direkomendasikan bahwa AISI 304 sebelum digunakan sebaiknya dilakukan pengerasan permukaan sehingga sifat mekanik bahan menjadi lebih optimal.Keywords : Uji Jominy, AISI 304 , Normalizing, ASTM A255-02 
Kemampukerasan Baja Tahan Karat AISI 304 Herdi Susanto; Pribadyo Pribadyo; Rahmad Novizar
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 5, No 2 (2019): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (950.529 KB) | DOI: 10.35308/jmkn.v5i2.1636

Abstract

Baja tahan karat AISI 304 secara umum digunakan pada mesin-mesin konstruksi terapan sederhana seperti poros propeler kapal nelayan, mesin penghancur es, pemeras tebu danlainnya, dikarenakan ketahanan korosifnya yang baik, disisi lain kelemahan AISI 304 pada kondisi lapangan sering mengalami deformasi dan kepatahan dengan putaran yangrelatif  tinggi. Untuk mengatasi hal tersebut dapat dilakukan  usaha  menambah  nilai kekerasan permukaan dengan melakukan pengujian Jominy Hardenability. Pengujian Jominy yang dilakukan pada spesimen uji dengan standar ASTM A255-02, dengan laju air pada nozzle 45 liter/menit, pada temperature 8500C dan holding time 15-20 menit. Hasil pengujian menunjukkan bahwa nilai awal kekerasan permukaan pada ujung quenching  sisi A adalah 187  HB dan pada  sisi B adalah  170 HB. Nilai kekerasan permukaan setelah di normalizing pada ujung quenching sisi A adalah 182 HB dan pada sisi B adalah 188 HB. Maka terjadi penurunan kekerasan pada sisi A sebesar 5 HB, dan terjadi peningkatan kekerasan pada sisi B sebesar 18 HB. Setelah di uji Jominy nilai kekerasan pada sisi A adalah 227 HB, dan pada sisi B adalah 223 HB. Pada pengujian jominy terjadi peningkatan kekerasan pada ujung sisi A sebesar 45 HB, dan peningkatan kekerasan  pada  sisi B sebesar 35  HB. Hasil penelitian  ini dapat direkomendasikan bahwa AISI 304 sebelum digunakan sebaiknya dilakukan pengerasan permukaan sehingga sifat mekanik bahan menjadi lebih optimal.
Kajian Teknis dan Ekonomis Pembangkit Listrik Tenaga Mikrohidro (PLTMH)Di Desa Darul Makmur Kotamadya Subulussalam Provinsi Aceh Pribadyo Pribadyo
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 2, No 2 (2016): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1297.739 KB) | DOI: 10.35308/jmkn.v2i2.840

Abstract

This study aims to review the magnitude of potential micro-hydro power ( MHP ) is technically and economically contained in Desa Darul Makmur Municipal Subulussalam used as a source of electrical energy using a propeller type turbine . Studies reviewed by the river flow and high water fall (head ) are available in the location using mathematical equations . The results of the study by considering topography , system micro-hydro power ( MHP ) with discharge parameters used by 0.07 m3 / sec and high water fall (head ) by 3.5 meters , micro-hydro power plants capable of resulting in a total energy 2,53 kW , with the price of electrical energy for Rp.805 / kWh and after distributed micro hydro power plants installed tenega can be used as illumination for 21 homes with power 0120 kW each house Keywords: PLTMH, potential energy, electric energy alternative
Pengaruh Ukuran Mesh Terhadap Kualitas Briket Batu Bara Campur Biomassa Kulit Kacang Tanah Dan Tepung Kanji Sebagai Perekat Dengan Tekanan 8,43 kg/cm2 Pribadyo Pribadyo
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 2, No 1 (2016): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.649 KB) | DOI: 10.35308/jmkn.v2i1.845

Abstract

Bahan bakar fosil merupakan sumber energi yang tidak dapat diperbarui sehingga akan mengakibatkan menipisnya cadangan bahan bakar fosil di dalam bumi.Berbagai solusi telah ditawarkan oleh para ilmuwan di dunia untuk mencari alternatif bahan bakar fosil.Briket adalah salah satu bahan bakar alternatif yang berbahan dasarnya berasal dari biomassa.Tujuan penelitian ini adalah untuk mengetahui kualitas dari briket batu bara campur limbah kulit kacang tanah dan tepung kanji sebagai perekat. Penelitian ini merupakan penelitian eksperimen dengan obyek penelitian adalah briket dengan menganalisis kerapatan (densitas),kadar air, kadar abu, ketangguhan dan nilai kalor. Data menggunakan metode deskriptif. Dari hasil penelitian diketahui kualitas briket batu bara campur limbah kulit kacang tanah dengan kerapatan tertinggi pada sampel (2.1) yaitu 0.99 gr/cm2, kadar air terendah pada sampel (1.1) yaitu 2.20%, kadar abu terendah pada sampel (1.1) yaitu 3.05%, ketangguhan tertinggi pada sampel (2.1) yaitu 1.52% dan nilai kalor tertinggi pada sampel (1.1) yaitu 5298.2 kal/gram.   Keywords: Biobriket, kulit kacang tanah, kualitas briket 
Studi Analisis Potensi Energi Angin Sebagai Pembangkit Listrik Tenaga Angin Di Kawasan Meulaboh Maidi Saputra; pribadyo pribadyo
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 1, No 1 (2015): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (836.721 KB) | DOI: 10.35308/jmkn.v1i1.826

Abstract

Which more lower deficit of fossil energy for generated power plant, in order to need to do wind power generation plant analysis based on renewable energy which is wind turbine horizontal type. This study is analyzing a power system with electric power load Meulaboh town by using a hybrid power generation system which HOMER between wind turbines and diesel generators. Wind resources are used is measured by BMKG Meulaboh Station, which is 6 m/s and the value of the price of diesel fuel used by the generator is equal to 0.5 $/L. The results of the simulation is given by the value of the Net Present Cost (NPC) and the lowest, in the amount of $ 66,535,084 for the value of Renewable Factor (RF) was 58% and for the value of Renewable Factor (RF), the largest at 71%, the value of the Net Present Cost (NPC) amounted to $ 68,091,256. Keywords: Wind Turbine, Homer, Power Plants, Net Present Cost (NPC), Renewable Factor (RF).
Kajian Minyak Solar Dari Hasil Penyulingan Tradisional (Studi kasus pertambangan minyak tradisional di Desa Pasir Putih Aceh Timur) Pribadyo -; T. Kausar
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 4, No 1 (2018): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1212.107 KB) | DOI: 10.35308/jmkn.v4i1.1581

Abstract

Solar merupakan salah satu komuditi yang sering digunakan oleh masyarakat luas terutama di indonesia. Hampir seluruh masyarakat Indonesia memakai solar untuk sarana sehari – hari terutama untuk bahan bakar kendaraan. Untuk solar sendiri banyak  yang diproses atau di olah di pabrik–pabrik besar yang salah satu nya diproduksi oleh PT. Pertamina. Kualitas minyak solar ditentukan oleh angka Cetana. Tujuan dari penelitian ini untuk mengetahui kualitas minyak yang dihasilkan dari penyulingan tradisional yang dilakukan oleh masyarakat Rantau Panjang Peurelak Aceh Timur dan kemudian dibandingkan dengan minyak solar standart mutu SNI. Pengujian dilakukan dengan menggunakan alat ukur Piknometer untuk  berat jenis (bj) dan Oktanometer Shatox untuk pengujian Angka setana.  Berdasarkan Hasil pengujian minyak solar hasil penyulingan tradisional nilai berat jenis adalah sebesar 877,6 Kg/m3 dan minyak solar standart mutu SNI berat jenis nya adalah sebesar 815- 860 Kg/m3. Dari hasil pengujian minyak solar hasil penyulingan tradisional  nilai angka setana adalah sebesar 48 dan minyak solar standart mutu SNI nilai angka setana adalah sebesar 48-51. Maka dapat disimpulkan angka setana minyak solar hasil penyulingan tradisional memenuhi Standart Nasional Indonesia sehingga layak untuk digunakan.