R.E.M. (Rekayasa Energi Manufaktur) Jurnal
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Perancangan Alat Pengering Kerupuk dengan Menggunakan Pemanas Heater: Design of a Cracker Dryer Using a Heater
Get PDFDrying 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: Analisis Bahan Bakar HSD Diesel dan Bio Diesel Terkait Performa Mesin Capai Staker Kalmar di PT. Garis Meratus
No full textModern 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%
Static Analysis of Frame Structure of Post-Stroke Tricycle Design Based on Solidworks Software 2012 with Material Type Variations: Analisa Statik Struktur Frame Desain Sepeda Roda Tiga Pasca Stroke Berbasis Software Solidworks 2012 dengan Variasi Jenis Material
No full textThe body weight of post-stroke patients varies from one another, this can affect material selection. In this study, the researchers designed a three-wheeled frame using various types of material and the same material size including: galvanized pipe, stainless pipe (AISI 304), mild steel pipe (ASTM A36), Alloy Steel pipe to obtain a safe design for sufferers post-stroke, the skeletal design was analyzed statically using Soliworks 2012 software to obtain the results of analysis in the form of: Von Mises Voltage, Safety Factor (Strain) and Strain (Displacement). Static analysis of Post-Stroke Tricycle Design results obtained the greatest Von Mises Voltage value on ASTM A36 type material with a stress value of 154.5 N/mm2 (MPa) and the smallest stress value in Galvanized type material with a stress value of 150.8 N/mm2 ( MPa). Based on the results of the analysis of Safety Factors (Safety of Factor) so that the design can be said to be safe for patients after stroke, the type of material that must be used is Alloy Steel with a value of Safety Factor (Safety of Factor) of 5.49
Experimental Study of Artificial Solar Air Heater Using Trapezoidal Wave Plate: Studi Eksperimen Pemanas Udara Tenaga Surya Artifisial Menggunakan Pelat Gelombang Trapesium
Get PDFA solar air heater is needed for the drying process, especially in Indonesia. It means the researches to produce a solar air heater that had high performance is necessary. This research analyses the performance of solar air heater using trapezoidal absorber plate with variation of folded angle 83˚, 85˚, and 87˚. The research carry out artificial experimentally using halogen lamp as a solar simulator. The working principle of solar air heating begins with an induction fan sucking air to enter through the honeycomb then flowing into the air heating duct. The process of heat transfer occurs in a halogen heat lamp passed by the transparent glass and then absorbed by the absorbent plate. This heat will heat the air flowing in the air heating pipe to be transmitted into the drying cupboard. The experiment used several variations of the mass airflow rate 0.022 until 0.051 kg/s and intensity 850, 900, dan 950 W/m2. Temperature measurement is carried out by installing a thermocouple at several points that have been determined. The best performance produced by the wave plate-shaped trapezoidal wave heaters 83˚ when I = 950 W/m2 air mass flow rate 0.022 kg/s with the temperature of the absorbent plate 87 ˚C, the temperature of the exit air 43.2 ˚C, the difference in the rise in air temperature 15.2 ˚C, and when I = 950 W/m2 air mass flow rate 0.051 kg/s the useful heat generated by the air heater 527 Watt, and thermal efficiency 96.8%
Design of Hydraulic Puller for Releasing Crankshaft Bearings on Motorcycle: Rancang Bangun Tracker Hidrolik Pelepas Bearing Kruk As Pada Sepeda Motor
Get PDFThe bearing puller on the market today still has a way of working using a gripper with a screw working system. The time required is relatively long and can allow damage to the crankshaft during the bearing release process as well as reduced work performance of the crankshaft. This study aims to design a tool that works with a hydraulic system to release crankshaft motorbike bearings. This tool makes it easy for everyone to do the job of removing bearings. The outer bearing hydraulic tracker or puller uses the working principle of the lever that is pumped with calculated pressure and load and the fluid pressure on the tracker can be known ie at 1X the tracker pump requires 41 kg / cm2 fluid pressure, 2X fluid pressure tracker pump 45 kg / cm2 and 3X pump tracker requires 72 kg / cm2 fluid pressure. As well as the time needed to remove the crankshaft bearing motor especially on the A and B motorbike. To release the crankshaft bearing A motor takes 19.78 s and removing the crankshaft bearing the B motor takes 31.95 s
Effect of Stator Vane on the Performance of the Savonius Wind Turbine: Pengaruh Stator Vane Terhadap Performa Turbin Angin Savonius
Get PDFThe turbulent air flow conditions in the urban area have a large effect on the performance of Savonius rotor wind turbines. To overcome this problem, a new design of the stator vane needs to be made. the stator vane has the ability to direct wind to the turbine rotor and increase air speed by utilizing throttling effects. Thus, the performance of the Savonius wind turbine can increase. In this study, the Savonius type vertical wind turbine is configured with three stator vane designs that have slope angles: 60o, and 70o. Performance testing is carried out at angles: 0o, 30o, and 60o towards the midpoint of the stator vane to find the direction of direction coming from the best wind on each stator vane design. All configurations are analyzed using an experimental wind tunnel open testing scheme with a wind speed range of 3-5 m/s. The parameters produced from the experiment include: power coefficient (Cp), torque coefficient (Ct) and Tip Speed Ratio (TSR). The results showed that the stator vane with 60o inclination angle was able to increase Cp 35.66% in the 60o incoming wind direction
Pengaruh Putaran Spindel dan Cairan Pendingin terhadap Kekasaran Permukaan Baja AISI 4140 pada Proses Pembubutan: Effect of Spindle Rotation and Coolant on Surface Roughness of AISI 4140 Steel in Turning Process
No full textThe 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
Characteristics of Peanut Skin Briquettes and Rice Husk Using the Torefaction Method in a Microwave Oven: Karakteristik Briket Kulit Kacang Tanah Dan Sekam Padi Menggunakan Metode Torefaksi Pada Oven Microwave
No full textBiomass briquettes are an alternative to fossil energy. Biomass briquette material has a large capacity and is easily available in the surrounding environment. The purpose of this study was to determine the value of water content, value of ash content, value of volatile matter content, value of bound carbon content and calorific value of mixed briquettes of peanut shell and rice husk with three different percentages. First a mixture of 30% peanut shell and 70% rice husk, second a mixture of 50% peanut shell and 50% rice husk, third a mixture of 70% peanut shell and 30% rice husk. From the results of the research data, it can be seen that the lowest water content is in a mixture of 70% peanut shells and 30% rice husks of 14.225. The lowest value of ash content was found in a mixture of 70% peanut shell and 30% rice husk at 13.873%. The lowest value of volatile substances was found in a mixture of 30% peanut shell and 70% rice husk at 36.712%. The highest value of bound carbon content was found in a mixture of 30% peanut shell and 70% rice husk at 27.028% and the highest calorific value was found in a mixture of 70% peanut shell and 30% rice husk at 5834.60 cal / g
Comparison of Predicted Obstacle Prediction for ALPO Type Catamaran Transport Vehicle: Perbandingan Hasil Prediksi Hambatan Wahana Angkut ALPO Tipe Catamaran
Get PDFWith the increase of the Decommisioning Offshore Platform in Indonesia water, a decommisioning vehicle is needed to dismantle and transport the offshore platform. Because of the operation of this vehicle to disassemble offshore platform in various offshore platform locations in Indonesian water, it is necessary to consider the vehicle main engine power by predicting the ship resistance when traveling to the offshore platform location. This paper discusses the results of several numerical prediction methods of resistance that applied on the catamaran ship type. The prediction method used for resistance calculation which based on satistical data and analytical methods from the cylindrical body theory. The resistance prediction on the decommisioning vehicles using maxsurf resistance with various methods at 12 knots service speed shows that Holtrop method produces a resistance value of 250.7 kN, the Van Oortmerssen method produces a resistance value of 955 kN, the Series60 method produces a resistance value of 210.5 kN, the Compton method produces a resistance value of 295.8 kN, the Fung method produces a resistance value of 540.6 kN, method Slender body produces a resistance value of 7036.4 kN, the Wyman method produces a resistance value of 603.2 kN and finally the last method of KR Barge produces a resistance value of 1258.5 kN. This study show that the differences of the result are significant from each of the prediction methods so that testing of the hydrodynamic model is highly recommended
Predictive Maintenance Implementation In Reach Stacker Kalmar Type Drd To Reduce Component Failure: Implementasi Predictive Maintenance Pada Reach Stacker Kalmar Type Drd Untuk Mengurangi Kegagalan Komponen
No full textThe Reach Stacker lifting tool is the most productive lifting tool for container lifting today. It can move container till 20 container box in every hour, it means that in 3 minutes it can lift and lower 1 box container. In operation the lifting equipment will surely experience a stop operation due to the failure of a component. The purpose of this study was to determine critical and important components of the history of failure data for a year (2016) in PT meratusline, by using tools Fault Tree Analysis, Failure Mode and Effect Analysis and Pareto. From the analysis, it obtained Load Handling component as the most critical component based on the most frequent failure and required a long time to repair. The cause of the failure itself was inconsistent greasing maintenance / Predictive maintenance was not executed and there was no loose handling of Load Handling chain components. From the result of research, it was suggested to make standard rule by adding greasing item in worksheet Predictive maintenance and Standard Operating Procedure Predictive Maintenance for chain replacement on Load Hadling component if already entering 12000 Hour life