Jurnal Konversi Energi dan Manufaktur UNJ
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DESAIN SISTEM MONITORING FLOWMETER KOMUNIKASI RS 232 MENGGUNAKAN SOFTWARE NODE-RED PADA FUEL CELL ELECTRIC VEHICLE: Design of RS 232 Communication Flowmeter Monitoring System using Node-Red Software for Fuel Cell Electric Vehicle
Full text linkOne of the applications of fuel cells is Fuel Cell Electric Vehicles (FCEV). FCEV is more efficient and produces no carbon emissions than conventional internal combustion engine vehicles. FCEV emitting only water vapor and warm air. This research hoped will provide new knowledge regarding the monitoring system for hydrogen output in FCEVs using the Node-RED software application, as well as regarding flowmeters with RS 232 output. The design of this serial flowmeter monitoring system was carried out in the fuel cell laboratory, the Energy Conversion and Conservation Research Center (PRKKE). This research was carried out by direct observation of the laboratory where fuel cell electric cars were studied, and collected data directly in the laboratory. The Node-RED flow design begins by providing a timestamp every 10 seconds when FCEV is operated, debugging to determine how the results of trials and failures occur. When FCEV is operated, a tenth of a second of data from the flowmeter enters the Moxa Nport device server. This monitoring design combines the Moxa NPort 5230 device server, battery supply, flowmeter with RS232 communication, and several electronic circuits. The flowmeter testing experiment for hydrogen output data on Fuel Cell Electric Vehicles obtained 1.38 with a speed of 1.46 l/min
RANCANGAN PROTOTIPE MESIN PENGERING GABAH BERBASIS TEKNOLOGI HYBRID: Prototype Design of Grain Dryer Machine Based on Hybrid Technology
Full text linkUntil now, the process of processing paddy into rice still relies heavily on the traditional and commonly used methods. During the drying stage, the harvested rice grains are spread out and sun dried. To address this issue, an effective solution is needed to enhance the quality of of rice seeds. Therefore, a post harvest rice handling technology is being developed with a hybrid technology based grain drying tool, where solar energy is still harnessed through photovoltaic solar panels (PLTS). The purpose of this research is to design, develop, and test a prototype grain drying machine abased on hybrid PLTS technology. The research focuses on calculating the power drying, and evaluating the PLTS system. The methods used include testing grain drying with variations in temperatures of 45ºC, 50ºC, dan 51ºC , as well as a grain weight of 8 kg. the greatest energy consumption during drying is directed towards the PLTS battery system, and calculations are performed to determine the duration of battery usage. The research findings reveal drying efficiencies of 9.7%, 12.8%, and 13.12% and final mouisture contents of 16.3%, 14.6% and 14.1 % at temperatures of 45ºC, 50ºC, and 51ºC respectively. The optimal drying times are 2 hours at 45ºC and 50ºC, and 1.5 hours at 51ºC. the battery usage time with a power of 209 W is 2.3 hours
KAJI EKSPERIMEN MESIN KOMPRESI UDARA DENGAN MEMODIFIKASI GIGI SENTRIS MOTOR BENSIN 4-TAK SEBAGAI SOLUSI ALTERNATIF KENDARAAN BERMOTOR BEBAS EMISI: Experiment Study of Air Compression Engines with Modification of 4-Stroke Gasoline Engine Centrical Gear as an Alternative Solution of Zero Emission Motor Vehicles
Full text linkThe compressed air engine is an environmentally friendly alternative with the advantages of zero emissions and a fast-charging process making it suitable for application as the main power source in vehicles. Previous research on compressed air power engines that modify the internal combustion engine was carried out by changing the shape of the camshaft. This is complicated, so another solution is to change the gear-centric ratio. However, research on centric gear modification is still not available. Therefore, this study aims to determine the performance of a compressed air engine with centric gear modification. This research presents an experimental study of a piston engine driven by compressed air where the test equipment is a 4-stroke internal combustion engine which is converted to a 2-stroke by modifying the centric gear ratio from 2:1 to 1:1. The torque produced by the engine is measured using a prony brake where variations in a brake pressure range from 0.4 bar to 2 bar with a change in brake pressure every 0.2. The variations in air pressure between 3 bar - 9 bar with a change in air pressure of 1 bar. The resulting engine speed is measured using a tachometer. The results of this study indicate that air pressure is the main factor affecting the performance of a compressed air engine, the greater the pressure of the compressed air, the greater the power generated. The best performance of the compressed air engine is at the highest air pressure experiment, which is 8 bar by producing 2.36 kW of power at 724.33 rpm engine speed with 31.09 Nm of torque, but the highest torque that can be obtained is 34.55 Nm at 618.67 rpm
COVER AND PREFACE JURNAL KONVERSI ENERGI DAN MANUFAKTUR VOL. 7 NO. 2 (2022)
No full textRohmatin et al., in their paper, discuss forklift performance analysis, where this paper aims to find out whether forklift performance is still within the standards set by using the overall equipment effectiveness (OEE) method. Syaefudin et al., in their paper, analyze the calculation of the control and power design of portable Senai tools to get the appropriate power requirements in the field. Syaka et al., in their paper, conducted an experimental study of the performance of an air compression engine with modified centric gear on 4-stroke internal combustion, which was changed to 2-stroke by modifying the centric gear ratio from 2:1 to 1:1. Syamsuir, in their paper, carried out the electroplating process of copper and nickel to know the effect of the layer formed on Ms 7210 low carbon steel on the corrosion rate. Susetyo et al., in their paper, discuss the design and testing of cutting support devices with a rectifier rail system for plasma cutting operations. Fikri et al., in their paper, conducted research in the field of welding to know the effect of current strength on penetration depth, welding width, and hardness in the heat-affected zone (HAZ) of ST-37 steel. Wulandari and Dhiyaulhaq, in their paper, reviewed articles with a discussion on the use of exhaust heat from several transportation methods to cool cabins or products through conceptual research by reviewing related literature. Hartono et al., in their paper, designed a rice planter using the jajar legowo system, which has an optimal axle and finned wheel design
KEKERASAN DAN KETAHANAN KOROSI LAPISAN KERAS DI ATAS PERMUKAAN BAJA KARBON : Hardness and Corrosion Resistance of Hardfacing Layer on Carbon Steel
Full text linkLow carbon steel is widely applied to make heavy equipment, such as bucket excavators because it has a combination of material properties such as strength, ductility, corrosion resistance, and good formability. The use of this excavator bucket requires high strength and high corrosion resistance. Because the excavator bucket always rubs against the ground, it is necessary to do hard facing to increase the hardness of this excavator bucket. This research examines the effect of coating and heat treatment on low carbon steel to increase hardness and corrosion resistance. The plating process uses manganese alloy steel and chrome alloy steel, then heat-treated to a temperature of 1000°C and holding time for 10 minutes, then cooled using water media. From the test results, it was found that coating using chrome alloy steel has higher hardness and corrosion resistance than coating using manganese alloy steel because chrome is harder and corrosion-resistant than manganese
ANALISIS POWER YANG DIPERLUKAN PADA RANCANG BANGUN ALAT BANTU SENAI PORTABEL: Required Power Analysis in The Design and Fabrication of Portable Senai Equipment
Full text linkMachines as tools in human work are currently the main needs that need to be in the goods and service industry. The machine as a tool based on its use is divided into 2 types, namely permanent/static and mobility/portable. Permanent machines are more widely used in the industrial world, while portable machines are more for repair services, which require various locations that are sometimes difficult to reach, and the application position can operate properly, and save time, energy, operational costs, and can be used anywhere. The weakness of portable machines lies in the power used because the power source uses mostly batteries. For this reason, further research is needed to obtain an analysis of the appropriate power requirements in the field. The steps taken in this study used experimental research methods to obtain results relevant to the power used according to the design needs of the tool. Control and power design analysis uses components such as DC electric motors, switches, adapters, and infrared sensors. From the results of the analysis of the control and power design calculations, the results obtained in the calculation of the electric motor power of 114 W (general power used in portable drilling machines) and the calculation of torque of 6.5 Nm the capacity in making external threads using this tool is capable of a maximum diameter of M6 with ST41 material
ANALISIS KINERJA ALAT ANGKUT FORKLIF DENGAN MENGGUNAKAN METODE OVERALL EFFECTIVENESS EQUIPMENT (OEE): Forklift Performance Analysis Using Overall Effectiveness Equipment (OEE) Method
Full text linkMaterial handling becomes an important activity in handling material, first a loading material in the company until unloading material, company X use forklift for material handling in production operation. Overall effectiveness Equipment (OEE) is one method used for measuring the performance of equipment in industries by considering availability, performance, and rate of quality of used equipment. This research purpose was to analyze the performance of forklifts using the OEE method. Based on the results of the study, it is known that during the 6 months of forklift damage varies with the longest breakdown time in June reaching 360 minutes or equivalent to 6 hours. The average value of forklift availability for 6 months period is 97.85% where the operating time is 6000 minutes or equivalent to 20 hours per month. The average value of forklift performance is 97.60% with the number of pianos being transported an average of 1152 units per month. The average value of forklift availability for 6 months is 97.85% where the operating time is 6000 minutes or equivalent to 20 hours per month. The average value of forklift performance is 97.60% with the number of pianos being transported on average per month being 1152 units. The average value of the rate of quality forklift is 98.71% with the number of piano products transported being 1152 units per month, while the number of defective products that fail to be transported only reaches 14.67 or equivalent to 15 products per month. The overall effectiveness method of equipment is obtained at 98.14% where according to Nakajima (1988) the chairman of the Japanese maintenance institute (JIPM) sets the ideal limit of the OEE value index for world-class companies that have implemented TPM, which is 85% and the value of the company's forklift performance is above the standard value. which is set at 98.14%
KEHILANGAN MASSA LAPISAN TEMBAGA-NIKEL/TEMBAGA-NIKEL-SILIKON PADA LARUTAN HCl: Mass Loss of Copper-Nickel/Copper-Nickel-Silicon Films in HCl Solution
Full text linkThe purpose of this study was to determine the effect of variations in the electroplating time of copper-nickel and copper-nickel-silicon on the corrosion rate of low carbon steel. Copper-nickel and copper-nickel-silicon electroplating were carried out for 10, 20, and 30 minutes. Then the corrosion test was carried out using the weight reduction method for 60 minutes, but every 15 minutes the sample was weighed to see the mass lost. The corrosion rate of copper-nickel plating specimens on low carbon steel in a 3.5% HCl corrosive solution at a plating time of 30 minutes has the highest resistance compared to other time variations of copper-nickel specimens, namely the 15th-minute mass loss of 0.0022 grams. , the mass loss of the second 15 minutes (30 minutes) was 0.0014 grams, the mass loss of the third 15 minutes (45 minutes) was 0.0014 grams, and the mass loss of the fourth 15 minutes (60 minutes) was 0.0021 grams. The corrosion rate of copper-nickel-silicon plating specimens on low carbon steel in a 3.5% HCl corrosive solution at a plating time of 20 minutes has the highest resistance compared to other time variations, namely mass loss in the first 15 minutes of 0.0021 grams, mass loss The second 15 minutes (30 minutes) was 0.0008 grams, the mass loss in the third 15 minutes (45 minutes) was 0.0013 grams, and the mass loss for the fourth 15 minutes (60 minutes) was 0.0015 grams
PENGARUH VARIASI TEKANAN SANDBLASTING TERHADAP LAPISAN HASIL POWDER COATING: The Effect of Sandblasting Pressure Variations on Powder Coating Films
Full text linkThe problem of motor vehicles made from low carbon steel is corrosion. Almost all automotive components require coatings with the aim of protecting structures that are generally made of carbon steel from corrosion attacks. There are many techniques in painting, one of which is the powder coating technique, which is powder paint (powder) which can be loaded with static electricity to facilitate the process of painting using objects made of metal. Surface preparation needs to be done before the powder coating process is carried out. The most common preparation is by sandblasting, administration of phosphoric acid, or sandpaper. From the three preparations mentioned, the sandblasting method can be adjusted so that the pressure can get the desired roughness. So in this study, the effects of sandblasting pressure (4,5, and 6 bar) on the powder coating layer will be discussed. From the research that has been done, specimens with a pressure of 5 bar showed the highest abrasion resistance and contact angle
PEMANFAATAN PANAS BUANG DARI KENDARAAN BERTENAGA DIESEL UNTUK MENJALANKAN SISTEM REFRIGERASI ABSORPSI: SEBUAH TINJAUAN: Utilization of Exhaust Heat from Diesel Powered Vehicle for Absorption Refrigeration System: A Review
Full text linkIn Indonesia, refrigeration using Vapour Absorption Refrigeration System or absorption refrigeration system is still uncommon to be used in vehicles. This system is not like a vapor compression refrigeration system that uses electricity to run the compressor. Instead of it uses heat in the generator. The use of an absorption refrigeration system is considered to apply to vehicles that produce heat from the engine. This review article discusses the use of exhaust heat from several modes of transportation to cool the cabin or product through conceptual research by reviewing relevant literature. The results of this study indicate that a diesel-powered engine can generate sufficient heat to power the cooling system