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R.E.M (Rekyasa Energi Manufaktur) Jurnal
Published by Universitas Muhammadiyah Sidoarjo
ISSN : 25275674     EISSN : 25283723     DOI : https://doi.org/10.21070/r.e.m
Core Subject : Engineering,
Engineering
Focus and Scope Aim: to facilitate scholar, researchers, and teachers for publishing the original articles of review articles. Scope: Mechanical Engineering include: Energy Conversion Renewable Energy Manufacturing Materials and Design Engineering Mechatronics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
 1 
Search results for , issue "Vol 4 No 1 (2019): June" : 6 Documents clear
Pengaruh Putaran Spindel dan Cairan Pendingin terhadap Kekasaran Permukaan Baja AISI 4140 pada Proses Pembubutan Angga Hari Setyawan; Iswanto Iswanto
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 4 No 1 (2019): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v4i1.2629

Abstract

The purpose of this paper discusses how the effect of different spindle spin speeds on surface roughness, how the effect of different coolant fluid on surface roughness and is there an interaction between rotation speed of spindle and coolant to surface roughness in conventional lathe process. In this study the variable varied is the spin speed of the spindle that is is 630 rpm, 920 rpm, and 1250 rpm and the variation of coolant used is coolant, used cooking oil, and used SAE 40 oil. Then the surface roughness test was done. From the results of surface roughness test previously done the lathe process with variations of rotation speed of spindle and coolant, it can be concluded that: the highest surface roughness value was obtained during the turning process using used cooking oil coolant and spindle rotation used at 920 rpm. While the lowest value of surface roughness of the workpiece is obtained when using used SAE 40 oil coolant using a spindle rotation of 1250 rpm.
Peningkatan Performansi Cooling Tower Tipe Induced Draft Counter Flow Menggunakan Variasi Bentuk Filler Eky Novianarenti; Gatot Setyono
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 4 No 1 (2019): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v4i1.1766

Abstract

This study aims to build and test a cooling tower. Cooling tower is a heat exchanger that functions to cool the hot water from the condenser and throw heat into the atmosphere at a power plant. This is done so that the temperature of the hot water from the condenser can cool as the original condition. One component of the cooling tower compiler is filler. Filler is a component that is very influential on cooling tower performance, where the contact surface between water and air is expanded and the contact time is extended. The study was conducted experimentally using the NTU (Number of Transfer Unit) method. The variations made in this study are straight filler, zig zag, and wavy shape. The parameters observed are the rate of heat transfer, cooling tower capacity and the effectiveness of the cooling tower.
Perancangan Alat Pengering Kerupuk dengan Menggunakan Pemanas Heater Mohammad Sandoyo Adamsyah; Mulyadi Mulyadi
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 4 No 1 (2019): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v4i1.2187

Abstract

Drying is the process of reducing water content to reach a certain moisture content. The drying process of mussel cauliflower in Balongdowo village still relies on sunlight in the drying process. Drying with this process is considered to be less efficient because when the hot rainy season the sun is unpredictable and requires extensive land in the drying process. To overcome this problem, in this final project, the title of the design of cracker dryer is taken using heater heater. Which is expected to increase effectiveness and productivity when the rainy season arrives can also reduce the time and production costs. The method used to solve these problems is to use the bootroyd design method which is designing a dryer that consists of the main components of the drying chamber, conveyor, drive motor and gearbox. The results of the test showed that the drying time of 76 seconds reduced the initial water content of 70% reduced to 15% the water content contained in crackers.
Fuel Analysis HSD Diesel and Bio Diesel Related Engine Performance Reach Staker Kalmar in PT. Meratusline Ponidi Ponidi; Ibnu Salam
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 4 No 1 (2019): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v4i1.1537

Abstract

Modern diesel engines require low sulfur fuel. So we held some external lab test of solar sampling at some diesel vendor to know its sulfur content. so that obtained by diesel vendor approaching standart. The sulfur content of DirjenMigas (0.25% w / w) is HSD of AKR of 0.153% w / w and Biosolar from ENEOS is 0.0343% w / w. The selection of two types of fuel is based on the needs of fuel by engine manufacturers (OEM) and the most efficient sulfur content. Side effects of excess sulfur content have resulted in the clogging of its fuel pump injection. So that the fuel supply to the combustion chamber is disrupted Too high sulfur levels also cause dangerous emissions and decreases its performance engine. To know the performance of the machine by Dyno / Dinamometer test machine performance, this is as a comparison material where the most efficient fuel that must be selected, to get the best engine performance, by three criteria taken such as Torque, Power engine, and Fuel Consumtion. So obtained Torque Output generated by HSD with Torque Reading result 810 lb.ft@1990 Rpm, Power result 302 HP, and specific fuel consumption 0.02 (kg / PS.jam) if compared with Bio diesel Torque output of 750 lb.ft @ 1960 rpm, Power of 283 HP and Specific fuel consumtion 0.01 (kg / PS.jam). of the data can be taken diesel decision that must be taken according to the level of fuel efficiency and engine performance is HSD solar AKR vendors with the level of efficiency of power output 6.29%, torque 7.40% and specific fuel consumption 50%.
Pengaruh Temperatur Pirolisis terhadap Kinetik Rate dan Volume Tar pada Limbah Serbuk Kayu Mahoni Purbo Suwandono; Andy Hardianto
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 4 No 1 (2019): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v4i1.1782

Abstract

Pyrolysis is an alternative technology that is a method for obtaining hydrocarbon energy sources. This technology is a combustion technology without involving O2 in the combustion process. The source of fuel from pyrolysis comes from renewable resources such as biomass / plants. Wood powder itself can be obtained from wood waste around us, so wood powder which is a biomass can also be used as raw material in the pyrolysis process. So far wood waste has only been used as a medium for planting mushrooms and fires. Whereas the use of wood waste in the manufacture of liquid smoke and charcoal has received attention in recent years, which can be produced by the pyrolysis method. The hypothesis of the study is that the higher the temperature, the higher the kinetic rate and volume of tar. this is because the energy given to biomass is also higher. The research method is to pyrolyze the material into the pyrolyzer machine with temperature variations, and later the reaction rate kinetic of the formed tar will be calculated. From this study we can conclude a number of things, namely: The higher the temperature of the volume of tar produced will be more numerous where the maximum volume obtained at a temperature of 500oC is 72 ml, but at very high temperatures the tar volume decreases because a lot of gas is formed. The higher the heating temperature, the kinetic rate that occurs in the decomposition of mahogany wood will also be faster, this has been validated the accuracy of the kinetic rate that occurs by comparing the actual volume with the volume of calculation results. The higher the heating temperature, the activation energy (Ea) and the exponential factor (A) will be smaller.
Peningkatan Ekonomi Ampas Tahu Menggunakan Mesin Pengering Teknologi Rotary Untuk Membuat Bahan Tepung dan Pakan Tri Hartutuk Ningsih; Bellina Yunitasari
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 4 No 1 (2019): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v4i1.1771

Abstract

The purpose of this program is to provide solutions to the problems that exist in tofu production SMEs, especially the problem of processing side effects of waste production which so far has not been maximally utilized, the production waste in the form of tofu waste can be utilized as a high economic value product. The method used is the process of drying the tofu dregs using rotary technology and the heat exchanger technology used to dry the tofu dregs and this tool is equipped with an automatic temperature regulator which is used to control the temperature in the drying tube. By using this machine, the wet tofu dregs can be dried quickly and the resulting color remains white (as in wet conditions). Based on the results of the drying test, the economic value of tofu waste can increase the economic value of tofu waste which initially only Rp. 10,000 to Rp. 63,000 per bag.

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