JURNAL ONLINE POROS TEKNIK MESIN UNSRAT
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PERANCANGAN MESIN STIRLING BETA TENAGA MATAHARI SEBAGAI PENGGERAK POMPA AIR
No full textStirling engine is a heat engine that is driven by compression cycle and expansion of the working fluid in the form of gas. At different temperatures there will be a pressure difference which causes changes in heat energy to mechanical energy. Mechanical energy can be used to drive a water pump. This study aims to design a solar power Stirling beta engine to drive a water pump. There are six stages in this research. The first step is literature study. The second step is data collection. The third step is the calculation of the initial data. The fourth step is determining the initial dimensions. The fifth step is designing. The final step is a conclusion. Through this research, the Stirling Beta solar power has been successfully designed to drive the water pump. The design results can be described in five parts. The first part is the centralized temperature generated from a parabolic mirror with a diameter of 800 mm ranging from 937 K. The second part is the resulting cycle pressure of 1.79 bar. The third part is, at 3000 rpm, the Stirling engine producing a power of 496,6 Watt.. The fourth part is the torque produced by the engine of 30.07 Nm. In the last section, the dimensions of the Stirling engine design are 524 mm long, 167 mm wide and 200 mm high.Keywords: Stirling Beta, Solar Power, Water Pum
MODIFIKASI ALAT PENCACAH PLASTIK DENGAN SISTEM PENGGERAK MANUAL
No full textThe purpose of this study is to modify the plastic chopper and make a plastic counter with a manual drive system.The method used is four steps. The first step is to determine the modification plan. The second step is the selection of the use of modified materials. The third step is to make technical drawings. The fourth step is to make a modified plastic counter.The results of this modification can be obtained by a simple plastic counter unit using a manual drive system with a estimation time of 1012,500 minutes or 16,875 hours. The modified plastic chopper was able to count 69 plastic bottles of mineral water in 1 hour. Keywords: Modification, Plastic Counter, Manual Drive Syste
SIMULASI DAN PEMODELAN TURBIN ANGIN TIPE DARRIEUS DENGAN KONFIGURASI ROTOR TIPE H UNTUK PEMBANGKIT LISTRIK TENAGA BAYU SKALA MIKRO
Get PDFThe purpose of this study was to obtain the results of modeling and simulation for H-Darrieus wind turbine with straight blades. There are two approaches used in this study, namely hand calculation and software analysis. The calculation and analysis employed wind speed data of Manado City. Before applying software analysis, the data is processed to obtain the lift & drag forces that occur in turbine blades and other forces acting on wind turbines. Furthermore, the results of hand calculations and software analysis are compared so that the results of modeling and simulation are validated.The average counted-power of turbine is 181,81 watts, the wind turbine diameter is 2260 mm, and the wind turbine height is 2350 mm. The lift force is 143,257 N & the drag force is 3,978 N which is based on the attack angle 8,95, and the maximum Von Mises stress in the wind turbine is 184,96 MPa. Therefore, the wind turbine would not fail because the maximum stress that occurs in the structure is smaller than allowable stress of the material.Finally, the results of the modeling and simulation for the H-Darrieus wind turbine with straight blades are successfully obtained. The output of this research is turbine design drawings.Keywords: Darrieus Wind Turbine, Modelling, Simulation, Lift & Drag Forc
PERHITUNGAN BEBAN PENDINGIN PADA RUANG SIDANG FAKULTAS TEKNIK UNSRAT
Get PDFAir conditioning is a cooling system where heat is transferred from the room to the atmosphere. In conducting activities in the room humans require conditions comfortable, the temperature or the humidity of the air in the room. To achieve comfortable conditions in a room, it is necessary to do air conditioning by using a cooling machine so that comfortable air can be obtained. Meeting Room of Faculty of Engineering Sam ratulangi University is often used as a place to carry out various activities, thus requiring cooling system. In this final project a calculation is performed to determine the peak cooling load and then determine the capacity of the cooling machine used to cool the room.From the calculation results obtained by the peak cooling load on the room = 125.301,3 BTU/jam. If using an Air Conditioning (AC) engine with 2 PK, then AC is required during peak load in the room as much as 7 units Keywords: Air conditioning, Cooling load, Cooling machin
SIMULASI KINEMATIKA MEKANISME LENGAN BACKHOE EXCAVATOR
Get PDF               In the modern era as now required a fast and efficient calculation method which is usually done by simulation method. The software used in this simulation is SolidWorks 2016. SolidWorks is a parasolid based solid modeling, and uses a parametric-based approach to modeling and assembly. Parameters refer to restrictions that are valuable to determine shape or geometry of the model.              Based on this in this research will be kinematics simulation, where the result of simulation covering the whole workspace on excavator arm. The object research is a Backhoe Excavator arm mechanism of Hitachi ZX-type ZX-200. The purpose of this study was to determine velocity, tangential acceleration, and normal acceleration in excavator arm mechanism.              The maximum velocity of boom bar is 2948.82 mm/s which occurs when the boom angle is at 16.64° (t = 3.83s) or at the minimum angle of the workspace. The boom velocity simulation results have also been validated by hand calculation, maximum tangential acceleration is 2430.12 mm/s2, and the maximum normal acceleration is 3705.11 mm/s2. The maximum velocity of arm shaft is 1778.06 mm/s which occurs when the angle of arm rod is at 140.86°, maximum tangential acceleration is 4594.03 mm/s2, and the maximum normal acceleration is 6665.24 mm/s2. The maximum velocity of bucket rod is 473.61 mm/s, maximum tangential acceleration is 90.09 mm/s2, and maximum normal acceleration is 297.89 mm/s2. Keywords: Kinematic Analysis, Arm Excavator, Hitachi ZX-200
PREDIKSI KEBUTUHAN ENERGI LISTRIK DI SULAWESI UTARA : SEBUAH STRATEGI IMPLEMENTASI
Get PDF    The purpose of this research is to design the implementation strategy of electric energy requirement in sulawesi uatra by using SWOT analysis. Method of auxiliary devices used as a tool tool aids electrical energy demand analysis using artificial neural network analysis. From SWOT analysis result, SWOT parameter values are: Strength 1.65, Weaknesses 0.95, Opportunity 1.75, Threats 1.05.           The results of the SWOT analysis show that the types of threats that must be considered is the uncertainty of primary energy, especially gas, and the weakness is the limited power and networks that have not been able to reach the suluttenggo region especially the archipelago.Keywords: SWOT Analysis, Design Implementation Strategy, Prediction Electrical                  Energy Requiremen
ANALISIS EFISIENSI EFEKTIF HIGH PRESSURE HEATER (HPH) TIPE VERTIKAL U SHAPE DI PEMBANGKIT LISTRIK TENAGA UAP AMURANG UNIT 1
Get PDFHeat exchanger is a device that serves to move one fluid to another fluid. In general, fluids are used as cooling using ordinary water (Cooling Water), and hot media use steam heat as heaters (Superheated Steam). One type of heat exchanger that is widely used in power generation industries is the Shell and Tube Heat Exchangers. High Pressure Heater (HPH) is one example of a heat exchanger that is widely used in the power generation industry that serves as a feed water heater before entering the boiler. This research was conducted to determine the effective efficiency of High Pressure Heater (HPH) at Amurang Power Plant (PLTU) unit 1. This determination is based on operational data on June of 2017. Data used to calculate the effective efficiency of High Pressure Heater (HPH). The calculations use the Shell and Tube Heat Exchanger heat transfer method. The calculation results obtained the highest effective efficiency achieved is equal to 69.392% and the lowest effective efficiency of 64.023% with an average effective efficiency of 66.531% during the month of June 2017.Keywords : Heat Exchanger, High Pressure Heaters, Effective Efficienc
PENGUKURAN KINERJA BERBASIS DAMPAK WASTE DALAM KEGIATAN PERAWATAN TOWER TELEKOMUNIKASI
Get PDFWaste is an activity that absorb or wasting the resource like the expenses or time that added but that’s not adding any value in that activity. The purpose of this study was to identify the correlation between the kind of waste and the performance size in the maintenance activity. To reach the purpose, case study in the maintanence of the tower was studied. From the study that have been done, it obtained various kind of critical waste and the correlation with performance of maintenance. From the result of this study, it obtained the critical waste like the employee that trying to fixed the broken machine with the waste priority number (WPN) of 70.Keywords: Waste. WPN, towe maintenance telecommunication
ANALISIS KELELAHAN AXLE SHAFT TRUK ISUZU ELF 125 Ps
Get PDFAxle Shaft or wheel driver shaft is a component of a vehicle that intended to continue the rotation of the differential to the wheels. The purpose of this research is to get the distribution of life, damage, and safety factor on the axle shaft due to fatigue load using Ansys 14 software, and to know the location at the axle shaft that potentially damaged due to fatigue load.           At first, literature study was undertaken, then did data colecction. After that, developed model of Axle Shaft using SolidWorks 2013. Finally, did fatigue analysis with software Ansys Workbench 2014. Based on the analysis, obtained life time, damage, and safety factor at Axle Shaft. In addition, also did macroscopic observations at surface of a broken Axle Shaft.           Distribution value of life time, safety factor, and damage due to fatigue loads have been obtained. On the other hand, the location at axle shaft that most potentially damaged is about 3.3 cm from the left end. Based on the macroscopic observation, the damaged at Axle Shaft cause by torsion occurring at the shaft. Keyword: Fatigue, Axle Shaft, Simulatio
PENERAPAN METODE ANALISIS VARIANS KECEPATAN MAKAN TERHADAP PANAS PEMOTONGAN PADA MESIN FREIS KUNZMANN UF6N
Get PDFThe goal of this research is related to findng the relationship between feeding rate against cutting rising temperature at machining process using analysis of varience.           The result showed that the greater of feeding rate, the higher heat produced in milling proses prom variance analisis at 95% confident level the increase of feeding rate will significant affect cetting temperature both at chips, cotting tools and working materials. Keywords : feeding rate,cetting temperature,maching