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ANALISIS PENGARUH KOMPOSISI PEREKAT TERHADAP KARAKTERISTIK TERMAL BRIKET ARANG PELEPAH SAGU SEBAGAI BAHAN BAKAR ALTERNATIF Badia, Bahdin Ahad; Sudia, Budiman; Mangalla, Lukas Kano; Gunawan, Yuspian; Aksar, Prinob; Samhuddin, Samhuddin; Putra, Muhammad Idris; Larobu, Feliks Eldad; Darwin, Darwin; Efendi, Rustam; Defi, Sry; Gamsir, La Ode Abdul; Darwis, Mardis
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 10, No 1 (2024): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v10i1.9208

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh komposisi perekat terhadap karakteristik termal briket arang pelepah sagu. Tiga komposisi yang diuji adalah briket dengan perbandingan presentase arang pelepah sagu:perekat tepung kanji masing-masing 90:10%, 80:20%, dan 70:30%. Pembuatan briket dilakukan pada tekanan konstan 70 kgf/cm2. Pengujian termal dilakukan menggunakan tungku pembakaran silindris yang dirancang untuk aliran udara secara alami. Setiap komposisi diuji dengan tiga briket. Selama pembakaran, penurunan massa dan peningkatan suhu ruang bakar diamati setiap interval waktu 4 menit menggunakan timbangan digital dan termokopel tipe K. Hasil penelitian menunjukkan bahwa komposisi dengan perbandingan 90% arang pelepah sagu dan 10% perekat tepung kanji menunjukkan kenaikan suhu pembakaran tertinggi. Hasil ini menunjukkan bahwa proporsi perekat tepung kanji yang lebih rendah dalam briket dapat meningkatkan efisiensi pembakaran
Analisa Kekuatan Tekan, Daya Serap Air Dan Densitas Pada Material Komposit Berbahan Dasar Fly Ash Batu Bara, Arang Sekam Padi Dan Plastik HDPE Irwan, Irwan; Mangalla, Lukas Kano; Kadir, Abd.
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 6, No 1 (2021): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.236 KB) | DOI: 10.55679/enthalpy.v6i1.19126

Abstract

Utilization of waste or garbage in Indonesia continues to be carried out in line with the increasing number of which is used as a filler material in making composites. This study aims to determine the effect of composite material composition made from fly ash coal, rice husk charcoal and HDPE plastic on compressive strength, water absorption and density of the material. This research was conducted as an experimental study that had been carried out by means of laboratory tests. The composition used was 30%: 5%: 65%, 25%: 10%: 65%, 20%: 15%: 65%. Specimens were made to ASTM D695 standards for press testing. The results of this study indicate that the value of the compressive strength obtained at the composition of 30%: 5%: 65% is equal to 1.96 N / mm2, the value of water absorption in the largest composite material is at the composition of 20%: 15%: 65%, which is equal to 2,0283%, as well as for the density value of the largest composite material at the composition of 30%: 5%: 65% which is equal to 1.4692 g / cm3.Keywords: Fly ash coal, rice husk charcoal, HDPE Plastic, press, water absorption, density
Pemanfaatan Minyak Pirolisis Ban Bekas Menjadi Bahan Bakar Alternatif Saputra, Ade; Mangalla, Lukas Kano; Salimin, Salimin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 1 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.858 KB) | DOI: 10.55679/enthalpy.v7i1.24495

Abstract

Tire production in Indonesia is increasing continuously in line with the increasing automotive industry. Along with that, the waste of used tires that are not used in the environment is increasing. So we researched the use of used tire pyrolysis oil as an alternative fuel. The purpose of this study was to determine how to produce fuel oil through the pyrolysis process of used motorcycle tires and to determine the combustion characteristics of the pyrolysis results of motorcycle-used tires. The method used in this research is an experimental method using a pyrolysis tool and data collection is carried out directly with various temperature variations. The research was conducted at temperatures of 250oC, 300oC, and 350oC to produce 202 ml, 280 ml, and 219 ml of pyrolysis liquid, respectively. The pyrolysis oil combustion test produced shows that the burning of used tire pyrolysis oil takes longer than the burning of kerosene in the same volume. Keywords: Tires, pyrolysis, temperature
Pengujian Gasifikasi Updraft Untuk Tongkol Jagung dan Cangkang Mete Sebagai Sumber Energi Alternatif Taufik, Muhamad Rian; Mangalla, Lukas Kano; Barata, La Ode Ahmad
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 6, No 4 (2021): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (993.847 KB) | DOI: 10.55679/enthalpy.v6i4.22572

Abstract

    Gasification is the process of  converting energy from fuel containing carbon (solid or liquid) into a gas called syngas (synthesis gas). The purpose of this study was to determine the characteristics of  syngas resulting from the gasification of a mixture of corn cobs and cashew shells and to determine the ideal composition  of  a  mixture  of  corn  cobs  and  cashew  shells  that  produces  optimal  gas  ingredients.  The method  used  in  this  study  is  an  experimental  method  by  making  a  gasification  tool  and  taking  data directly with several variations of composition. The results showed that thecharacteristics  syngas at the composition of 100% corn cobs could not produce flames, the mixture composition of 75% corn cobs and 25% cashew shells could not produce flames, at the composition of a mixture of 50% corn cobs and 50% cashew shells it was able to produce flames. flame, the composition of a mixture of 25% corn cobs and 75%  cashew  shells  can  already  produce  a  flame  and  a  composition  of  100%  cashew  shells  can  also produce a gasification flame. Virtually the resulting flame is thought to be due to the presence of more hydrogen  (gas)  than  carbon  (smoke  from  combustion).  The  best  composition  in  updraft  gasification testing for corn cobs and cashew shells was obtained in a composition with a mixture of 25% corn cobs and 75% cashew shells, the resulting flame was obtained at 32.5 minutes to 50 minutes. Key words: Updraft gasification, composition , corn cobs, cashew shells, flame   
Pengujian Eksperimental Panas Yang Timbul Akibat Gesekan Pada Kampas Rem Cakram Komposit Berbahan Serat Rami Dan Serbuk Arang Tempurung Kelapa Dengan Perekat Resin Epoksi Kusmardin, Kusmardin; Mangalla, Lukas Kano; Samhuddin, Samhuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 4, No 3 (2019): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.891 KB) | DOI: 10.55679/enthalpy.v4i3.10000

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The purpose of this study was to determine the heat that builds up and the rate of abrasion due to friction on the brake discs made of fiber composite jute, coconut shell with an epoxy resin adhesive. The tools used in this study are digital thermometer, abrasion, stopwatch, thermometer, digital scales while the materials used are ramie fibers, coconut shell charcoal, and epoxy resin. Comparison of a mixture of ramie fiber, coconut shell powder, and epoxy resin namely for canvas 1 (30:30:40 %), canvas 2 (20:40:40 %), and (40:20:40 %). The lowest abrasion rate value in the 3rd sample with a composition (40 % ramie fiber, coconut shell charcoal powder 20 %, and 40 % epoxy resin) is 0,00071 gr/ s, the thermal conductivity value of the material drops at 30 % ramie content and increases in the 40 % content of ramie.Keywords: brake lining, abrasion rate, thermal conductivity, ramie and epoxy
Analisa Mampu Redam Suara Komposit Serat Sabut Kelapa Dengan Matriks Polyvinyl Acetate (Lem Fox) Said, Harman; Mangalla, Lukas Kano; Sudia, Budiman
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 4, No 1 (2019): Enthalpy-Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (688.868 KB) | DOI: 10.55679/enthalpy.v4i1.6078

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This study aims to find out and analyze the ability of the sound attenuation of coco fiber composites with polyvinyl acetate (fox glue) matrix on various compositions. The composite material used is coconut fiber with polyvinyl acetate (Fox glue). The data obtained were tested using tube impedance along with speaker devices, amplifiers, power supplay, leptop / smartphone, oscilloscope, sound lever meter with input frequencies of 1000, 1500, 2000, and 2500 Hz. The results of the Noice Absorption Coefficient (NAC) value of the composite coir fiber test specimens with polyvinyl acetate matrix (Fox glue) have the highest sound absorption coefficient (α) 0.50788 at fiber volume fraction of 20%: 80% with a frequency of 2500 Hz. While for the lowest sound absorption results (α) 0.50121 with fiber volume fraction of 40%: 60% with a frequency of 1000 Hz. The results of all test specimens can be used as sound absorption material because it has a sound absorption coefficient > 0.5 and porous and fibrous. Keywords : Composite, Coconut Fiber, Polyvinyl Acetate (Fox Glue) And Noice Absorption Coeffisien
Analisa Perpindahan Panas Pada Alat Pengering Pisang Tipe Rak Kombinasi Tenaga Surya dan Biomassa Sakka, Ambo; Mangalla, Lukas Kano; Sudia, Budiman
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 4 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.84 KB) | DOI: 10.55679/enthalpy.v3i4.5282

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So far, most farmers have drained agricultural products by drying directly under the hot sun. The drying process by drying directly requires intensive labor, longer time and requires a large amount of land. The purpose of this study is to find out the heat transfer analysis that occurs in rack type dryers that utilize moving air flow into the device naturally and then the air is heated by utilizing the heat of solar radiation collected at solar collectors and also utilizing biomass energy used to accelerate drying process of the product in the drying chamber. The data obtained were taken by using Thermocouple CC type (Cooper Constanta), Solar Powermeter, Anemometer, Thermo-Hygrometer and Scales. The results of the study that the heat transfer analysis on the rack type dryer with the drying process using solar collectors as heat absorbers and biomass energy then combined. The results obtained for solar power efficiency is 55.852%, biomass energy efficiency of 58.127%, and combination efficiency of 69.935 %.Keywords: Dryer type rack, solar collector, biomass, drying variation, temperature, efficiency.
PENGUJIAN SISTEM TOREFAKSI KAYU JATI MENGGUNAKAN MICROWAVE Sarifudin, Sarifudin; Mangalla, Lukas Kano; Barata, La Ode Ahmad
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 1 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.382 KB) | DOI: 10.55679/enthalpy.v7i1.24504

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Torrefaction is a heat treatment of raw biomass to obtain a fuel that is more stable, has a high energy density and higher brittleness and is easy to grind. The purpose of this study is to determine changes in physical properties, calorific value of water absorption resistance (hydrophobic) in teak wood after the torrefaction process in the microwave. The method used in this study is an experimental method using a microwave heater equipped with measuring instruments such as a digital thermometer, and digital scales. The biomass material used was finished wood cut with sample sizes of Model 1 (cube 3 x 3 cm), Model 2 (rectangular 7 x 3 x 3 cm), and Model 3 (cylindrical tube 7 x 3 cm). Each material was put in a microwave depth for torrefaction for 15, 25, 35 minutes. The results showed that the model 2 sample experienced the largest mass change of 80.95%, followed by model 3 with a mass change of 76.47% and Model 1 which experienced a mass change of 70%. The longer you experience electromagnetic wave radiation in the microwave, the greater the mass change and the lower the water absorption Keywords: Torrefaction, teak wood, microwave, calorific value, moisture content
Analisa Proses Produksi dan Aplikasi Minyak Pirolisis Kulit Jambu Mete Sebagai Bahan Bakar Alternatif Ato, La; Mangalla, Lukas Kano; Samhuddin, Samhuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 4, No 2 (2019): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.006 KB) | DOI: 10.55679/enthalpy.v4i2.9964

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Energy is a basic human need, which continues to increase. Fossil fuels are one of the limited fuels. The purpose of the study is the analysis of the production process and application of cashew skin oil pyrolysis as an alternative fuel. A variation in the size of the material to obtain a liquid product pyrolysis results and perform testing pyrolysis results with the flame test. Pyrolysis carried out at a temperature of 300-400 oC. Performed pyrolysis with some variation in the size of the material, namely coarse, medium and smooth. The results of the study showed the higher the pyrolysis temperature the more liquid product mass-produced. Cashew seed skin pyrolysis by using ordinary water-cooling media produces 210 ml of liquid product, ICE cooler produces a liquid product of 225 ml and use the air-cooling medium by 160 ml. Second variation using skin Cashew nut medium with ordinary water pending media of liquid generated at 170 ml, ice water 165 ml and air 172 ml. The third variation of using cashew skin smoothly with regular water cooling produces a fluid of 217 ml, ES 220 and air 167 ml. Conducted research on the analysis of the production process and application of cashew skin oil pyrolysis as an alternative fuel.Keywords: energy, cashew skin, and pyrolysis
PENGARUH VARIASI KOMPOSISI KOMPOSIT BERBAHAN GYPSUM, SERAT IJUK POHON AREN DAN RESIN POLYESTER TERHADAP KEMAMPUAN MEREDAM SUARA Idris, Idris; Mangalla, Lukas Kano; Sudia, Budiman
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 2 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.205 KB) | DOI: 10.55679/enthalpy.v3i2.4213

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Sound pollution from noise is a classic problem in Indonesia. This noise can be reduced by using an acoustic damper. The composite material made from coconut fiber and matrix is an alternative to environmentallyfriendly acoustic damper material because it utilizes agricultural waste material. this research has been made of fiberr matrix composite, gypsum powder with polyester resin. To increase the strength of coconutfiber first soaked in 2% NaOH solution for 1 hour. The composites are then tested for the value of the sound absorption coefficient (????), the composite damping test is performed on the kundts tube impedance tool in the speaker, amplifier, power supplay, laptop/smartphone, oscilloscope, sound lever meter with input frequency 600,800,1000 Hz. The test result of the value of Noice Absorption Coefficient (NAC) of all specimens of polyester resin composite test in fiber reinforcement fiber and gypsum powder has the highest absorption coefficient (????)=0.358316 at 30: 20: 50% fiber fraction with 1000 Hz frequency. As for the lowest sound absorption results (????)=0.351631 with fiber volume fraction 20: 30: 50% with a frequency of 600 Hz. In the general whole specimens can be made as a damper because it has a value of sound absorption coefficient >0,3.Keywords: composite, gypsum, fibers, polyester and NAC.