Jurnal Konversi Energi dan Manufaktur UNJ
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ANALISIS RUGI-RUGI HEAT RATE PLTU BANTEN 3 LONTAR AKIBAT DEVIASI PARAMETER PADA KONDISI AKTUAL MENGGUNAKAN ANALISIS GAP: Heat Rate Losses Analysis of Banten 3 Lontar PLTU due to Deviation Parameter on Actual Condition using Gap Analysis
Full text linkSteam power plant (PLTU) is one type of energy conversion technology to generate electricity from fossil materials. The performance of a PLTU unit will begin to decline as the unit ages. In addition to age, performance degradation can also be caused by deviation of operating parameters, which can cause heat rate losses. The purpose of this study is to determine the performance of PLTU Banten 3 Lontar unit 2 by analyzing heat rate losses due to parameter deviations according to actual conditions and calculating cost savings and possible improvements. The research methodology used is an evaluation method where the actual data of operating parameters will be compared with the baseline data. The comparison will produce a deviation value, which is then used to obtain the value of heat loss, cost loss, and improvement recommendations for the plant. Baseline data is obtained from the interpolation equation of commissioning testing at 3 different variation loads. From the study, it is known that there was an increase in Nett Plant Heat Rate (NPHR) with an average of 561 kCal / kWh. The increase in NPHR occurred due to heat rate losses, where the decrease in turbine HP efficiency was the main cause, with an average loss of 87.96 kCal / kWh or 24.53% of total losses. Assuming that all heat rate losses during testing can be corrected, the average potential energy savings per day is 8,604,802 kCal/kWh, while the average cost savings are Rp1,534,046,000/month
PENGEMBANGAN DESAIN KEMASAN KERIPIK MENGGUNAKAN METODE QUALITY FUNCTION DEPLOYMENT (QFD) (STUDI KASUS PADA UKM MPOK IMEH): Development of Chip Packaging Design Using the Quality Function Deployment (QFD) Method (Case Study on Independent Small Business Mpok Imeh)
Full text linkMpok Imeh Chips is an Independent small business that produces Balado cassava chips in Jakarta, where cassava chips are packaged using plain plastic so that it has an unattractive impression. This research focuses on developing packaging designs that are following customer desires using the quality function deployment (QFD) method. Based on the results of the study, it is known that the customer's requirement for cassava chip packaging produced by UKM Mpok Imah includes cassava chip packaging that functions to protect the product, a medium packaging size. The form packaging is a standing pouch. Cassava chips packaging is made of polypropylene plastic transparent packaging. There is product information on the packaging. The packaging design is based on the house of quality (HOQ) in QFD and uses polypropylene plastic materials, size (14 x 22) cm, a weight of 250 grams, cassava chips illustration, transparent and a standing pouch packing, description on the label shown on the front view design shows a visualization of the chip's packaging, there is some information about the product including the product name, net weight, address of the producing party and the halal logo. On the back packaging shown, there is information about the composition, storage rules and how used the packaging information expiration date of the packaged product
PENERAPAN PEMROGRAMAN PYTHON DALAM MENENTUKAN WAKTU OVERHOUL KONDENSOR TURBIN UAP: Application of Python Programming in Determining the Overhoul Steam Turbine Condenser
Full text linkCondensers as the main equipment and heat exchangers in a combined cycle power plant have a major effect to determine combined cycle efficiency. The condenser is used to transform saturated steam into water which will be reused in a combined cycle power plant. To acquire high performance, the condenser requires an overhaul plan and calculated performance. In this research, to determine a good overhaul plan, the python programming language with the linear regression method is used. The python programming language aims to predict the condenser when it must be overhauled. From the results of the research, it was found that there was an increase in the value of the cleanliness factor condenser before the overhaul. From 56.69% to 57.45% after the overhaul. After using linear regression in python programming on the distribution data from 2018 which was divided into three groups of analysis, it was found that the condenser must be overhauled on August 24, 2023
PERBANDINGAN PENGGUNAAN SINGLE INJECTOR DAN DOUBLE INJECTOR TERHADAP TORSI DAN DAYA PADA SEPEDA MOTOR EFI DENGAN KAPASITAS MESIN 110 CC MENGGUNAKAN BAHAN BAKAR PERTAMAX : Comparison of Using Single and Double Injector to Torque and Power on EFI Motorcycle with 110 cc Engine Capacity using Pertamax Fuel
Full text linkPertamax has the advantage of the pertatec compound protecting the engine from rust. In Pertamax fuel with an octane rating of 92 it works optimally and the rest of the combustion results. Meanwhile, an engine with a lower octane rating has the impact of burning fuel that explodes and has a risk of misalignment causing knocking symptoms. This research includes comparative research with experimental methods. The test results for a single injector (12 holes) have increased compared to a double injector (12 holes). 10.86 and on the double injector (12 holes) which is 12.25 so that the acceleration on the single injector is better than the double injector, the single injector (12 holes) which is 30.15 Kph/s and the double injector (12 holes) which is 29.37 Kph/s, resulting in greater torque and power values, namely single injector (12 holes) of 9.71 Nm and power of 10.19 HP and double injectors (12 holes) of 9.7 Nm and power of 8. 97 HP with the greatest speed obtained single injector (12 holes) 103.91 Km/h and Double injectors (12 holes) 103.68 Km/h. So that a single injector with 12 holes is better used on 110 cc vehicles seen from the aspect of the Dynotest
SISTEM RESIRKULASI AIR OTOMATIS UNTUK PENGHEMATAN AIR BERSIH DAN ENERGI PADA BUDIDAYA IKAN NILA: The Automatic Water Recirculation System for Clean Water and Energy Saving in Tilapia Farming
Full text linkThe acidity and turbidity of water are essential factors in tilapia farming, so it is necessary to control the acidity (pH) and turbidity (NTU) of water. This research aims to develop an automatic water recirculation system to save the use of clean water and energy consumption in tilapia fish farming using a microcontroller based on pH and turbidity (NTU) values. The research method used is experimental, starting with design and manfacture an Experimental apparatus in the form of a fish pond from a box-shaped tarpaulin, a filter system, a water circulation system consisting of pipes and a pump that has a suction power of 25 lpm, an Arduino-based microcontroller water quality controller. Tests were carried out by comparing water's pH and NTU values before and after filtering. The results showed that using a water recirculation system in a fish pond equipped with a filter system and an Arduino-based microcontroller system can significantly maintain the pH value and reduce the turbidity level (NTU). Using a recirculation system provides energy savings for pump consumption of 51.4% at a water flow rate of 15 lpm and 32.3% at a water flow rate of 25 lpm compared to conventional systems. Overall, the recirculation system provides the benefits of energy savings in pump operation, savings in water usage, and controlled water quality
ANALISIS LAJU KEAUSAN BRAKE PAD TERHADAP DISC BRAKE KERETA LISTRIK LRV SERI 1100 : Analysis of Brake Pad Wear Rate on Disc Brake Electric Train LRV 1100 Series
Full text linkThe brake pad is a critical component in the LRV braking system. Based on maintenance data on the LRV Series 1100 shows that there is a decrease in the thickness of the brake pad. The braking system on the LRV has two types of braking, which are regenerative braking and pneumatic braking. Regenerative braking is a braking system that works by utilizing kinetic energy in motor traction. Pneumatic braking is a braking system that works by utilizing compressed air which moves the calipers and is forwarded to the brake pads to grip the disc brakes. The purpose of this study is to determine the wear rate of the brake pads so that the prediction of the service life of the brake pads is known and to find out the factors causing the differences in the wear rates of the brake pads attached to the bogie trailer and the bogie motor. The method used in this study is linear regression, by processing maintenance data and collecting data in the field so that the factors that influence the wear rate and differences in the rate of wear on the brake pads are obtained. After analyzing the data, the brake pad on the McA bogie brake pad can be achieved in November 2039 with a thickness of 8.06 mm, the McB bogie in June 2042 with a thickness of 8.03 mm, on the trailer bogie in November 2029 with a thickness of 8.12 mm. The braking force between the brake pad and disk brake on the McA and McB bogies was 98.26 kgf, the braking friction that occurred had an impact on the wear rate of the McA and McB bogie brake pads which was 1.11 x 10-6 mm3/Nm. Whereas in the bogie trailer, the braking force between the brake pad and disk brake is 25.24 kgf, the braking friction that occurs affects the brake pad wear rate of 10.01 x 10-6 mm3/Nm. The factors that affect the difference in wear rate are the regenerative braking function and the pneumatic braking itself, on bogies McA and McB brake pads work at speeds of 15 km/h to 0 km/h, while on bogie trailers from a maximum operating speed of 60km/h to 0 km /j uses the pneumatic braking function
PENGARUH VARIASI BOBOT ROLLER WEIGHT CVT TERHADAP AKSELERASI SEPEDA MOTOR HONDA VARIO 150: The Effect of Variation Weight for CVT Roller Weight on Acceleration of Honda Vario 150 Motorcycle
Full text linkBased on the experience of automatic motorcycle users Honda Vario 150, the motorcycle has several weaknesses, but one of the weaknesses that often occurs is the slow acceleration of the motorcycle from low to medium speed. CVT transmission system (Continuously Variable Transmission) affects the slow acceleration of a motorcycle from low to medium speed. The purpose of this study is to analyze the results of testing the use of roller weights with standard weights (18 g), 16 mix standard, and 16 g to get the value of the best acceleration on a dead motorcycle c Honda Vario 150. The research method used is an experimental research method using two research methods, namely testing with a dynamometer and testing with acceleration measurements with logger pro software. The use of a standard roller weight (18 g) is the roller weight with the fastest acceleration on a Honda Vario 150 motorcycle. This is evidenced by an average acceleration of 2.98 m/s2 . While the roller weight of 16 mix standard and 16 g experienced a decrease in acceleration. For roller weight 16 mix standard, there was a decrease in acceleration of 15.44% with an average acceleration of 2.52 m/s2 . And on the 16 g roller weight, there is a decrease in acceleration of 28.86 % with an average acceleration of 2.12 m/s2
ANALISIS SIMULASI KEKUATAN DAN PEMBUATAN RANGKA KENDARAAN SEPEDA MOTOR LISTRIK: Analysis of Strength Simulation and Frame Fabrication of Electric Motorcycle Vehicle
Full text linkThe development of the automotive industry, especially my vehicle transportation, has changed from a fuel motor to an electric motor vehicle. The purpose of writing is to get results from the simulation of frame design and power on an electric motorcycle. The simulation result from the design where the material used is low carbon steel that the frame of an electric motorcycle with a rider weight of 170 kg is safe based on the "machine element" book on the dynamic load safety factor, which is determined from 2.0-3.0 For static loads 1.25-2.0 and shocks 3-5 this frame construction includes dynamic loads, displacement resulting from the stress analysis of the electric motorcycle frame receiving a load of 1700 N which is assumed to be the weight of the rider. Based on the simulation results, the maximum displacement is 0.2118 mm, and the von Mises stress generated by the stress analysis of the electric motorcycle frame receives a load of 1700 N, which is assumed to be the weight of the rider. Based on the simulation results, the maximum von Mises is 101.3 MPa. The von mises voltage. This electric motorcycle uses a 48 V BLDC brushless motor, 1500 W, 550 rpm, and uses a 58 V and 24 Ah lithium-ion battery
ANALISIS LAJU DEFORMASI PAHAT HSS PADA SIMULASI PEMBUBUTAN MESIN CNC DENGAN APLIKASI ANSYS : Analysis of HSS Tool Deformation Rate on CNC Machine Turning Simulation with ANSYS Application
Full text linkThe demand to improve quality and productivity in the manufacturing industry underlies the analysis of tool deformation rates in the turning process. The methods used previously are considered inaccurate, and the provided information is incomplete. Therefore, detailed and accurate simulations are needed to determine deformation and strain values in HSS chisels. This study aims to obtain deformation and strain values on high speed steel (HSS) chisels in the process of turning ST42 steel workpieces using the finite element methods (FEM) method. The analysis was carried out using the ANSYS explicit dynamics application. This application aims to simulate complex physical phenomena by entering predetermined parameters, including diameter, spindle rotation, and workpiece and tool properties. HSS chisels are used in this simulation with ST42 steel workpieces. The variables in this study were the workpiece diameters of 30 mm, 40 mm, and 50 mm, with the same length of 200 mm. From the simulation results, it is evident that the maximum deformation value of the HSS tool on a diameter of 30 mm workpiece is 205.04 µm at a time step of 1.0 x 10-4 seconds. On a diameter of 40 mm workpiece, it is 205.19 µm at the same time step, and for a workpiece with a diameter of 50 mm, the tool deformation is 205.23 µm at the same time step. Additionally, the strain value on the HSS chisel with a workpiece diameter of 30 mm is 0.689 µm at a time step of 1.0 x 10-4 seconds. For a workpiece with a diameter of 40 mm, the strain is 0.783 µm at a time step of 1.0011 x 10-4 seconds, and on a workpiece with a diameter of 50 mm, the final strain on the tool is 0.866 µm at a time step of 1.0 x10-4 seconds
COVER AND PREFACE JURNAL KONVERSI ENERGI DAN MANUFAKTUR VOL. 8 NO. 1 (2023)
No full textSyaka, et al., in their paper, analyzed the comparisons and differences in variations in setting injection duration and ignition timing for engine power output using Pertamax fuel using experimental methods. Riyadi, et al., in their paper, analyzed the effect of CDI and spark plug variations on the performance and fuel consumption of the Vespa Strada motor. This research was conducted to determine the effect of using variations of the CDI limiter and CDI unlimiter with spark plugs on torque, power, and fuel consumption using Pertamax fuel. Sopiyan, et al., in their paper, conducted experiments with two types of calipers to know the distance and braking time on a 125 cc motorcycle. Riyadi, et al., in their report, conducted experiments with roller weight variations to get the best acceleration value on the Honda Vario 150 automatic motorcycle. Rohmatin, et al., in their paper, discussed the development of chip packaging designs according to customer wishes using the quality function deployment (QFD) method. Muhammad and Yulianto, in their report, determined an excellent overhaul planning using the help of the Python programming language with the linear regression method. Setiawan, et al., in their paper, conducted a simulation analysis and fabrication of the frame to obtain the design of the frame and power for electric motorcycle applications. Juwardi, et al., in their paper, determined the standard time and productivity in the glass cleaning work of building X using the stopwatch time study method