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INDONESIA
Jurnal Mahasiswa TEUB
Published by Universitas Brawijaya
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Core Subject : Education,
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Articles 16 Documents
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Search results for , issue "Vol. 10 No. 6 (2022)" : 16 Documents clear
RANCANG BANGUN PEMBANGKIT LISTRIK TENAGA PIKOHIDRO (PLTPH) DENGAN TURBIN ULIR (ARCHIMEDES SCREW) Nurul Irfan AlFandy; Erni Yudaningtyas; Gaguk Asmungi
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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ABSTRACT Screw turbine (Archemedes Screw) is a turbine that utilizes the head and water flow per second flowing in the irrigation channel. This water flow will move the turbine screw. The turbine screw movement will rotate the connecting shaft between the turbine and the generator (producing mechanical energy). The shaft will drive the generator so that the mechanical energy from the shaft will be converted into electricity in the generator. This turbine operates at low speed and is newly developed in Indonesia. But as a new turbine technology, until now there are still very few theories or references available regarding the design of screw turbines. The main components of this power generator are the turbine, speed booster (gear and pulley), Boost DC Converter and battery. In measuring water discharge, the floating method is used to calculate the available water discharge. The electric power generated will be stored in a 12v 7.5 Ah battery. The generator power of the device is designed to reach a maximum point, when the water discharge is 134 liters per second, with a voltage of 5 volts which will be increased the voltage to 12.5 volts and a current of 0.53 Ampere as the battery power supply. Keywords : screw turbine, screw angle, renewable energy, new technology, PLTPH, low head
PENGARUH VARIASI KONSENTRSAI LARUTAN KOH TERHADAP UNJUK KERJA ELEKTROLISER TIPE WET CELL Ikhsaniyusuf Alfiansyah Putra; Moch. Dhofir; Lunde Ardhenta
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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This study uses a wet cell type HHO gas generator which was developed with the addition of PWM as a control of duty cycle, frequency, and voltage. The duty cycle in PWM is set at 75% and the frequency is set at 1 kHz. The electrodes used are made of grade A graphite with dimensions of W x W x H: 14 cm x 2 cm x 2 cm. The catalyst used was KOH with variations of 10 grams, 15 grams, and 20 grams dissolved in 1 L of distilled water. Each test was carried out with a pure DC source and with a PWM source for a period of 15 minutes for each test. Parameters measured in the test are voltage, current, temperature, and volume of HHO gas. Meanwhile, what is calculated is the power needed by the HHO generator and the efficiency of the HHO generator. The results obtained in this study were the average volume of the highest HHO gas was 94.67 ml/minute when using a pure DC source and 20 grams of KOH. The smallest power consumption is 33.90 - 41.25 Watt when using a PWM and 10 gram KOH source. The highest efficiency is 21.95% when using a 20 gram PWM and KOH source.Keywords: HHO gas, Pulse
PENGARUH VARIASI JARAK ELEKTRODA TERHADAP UNJUK KERJA ELEKTROLISER TIPE WET CELL Muhaammad Naufal Harist; Moch. Dhofir; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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This study discusses how to reproduce HHO (Hydrogen Hydrogen Oxygen) gas by water electrolysis process with electrolyzer wet cell or wet type. The method used in this research is experimental. The design of this tool is divided into 3 main stages, manufacture of containers, manufacture of water traps, and manufacture of gas flowmeters. The container measuring 120 mm x 100 mm x 140 serves as a place for the process of separating water molecules (?2?) into its constituent compounds, namely hydrogen (?2 ) and oxygen (?2 ) or it can be called water electrolysis. The electrode used is a graphite with measuring of graphite electrode is 140 mm x 20 mm x 20 mm. 20 grams of Potassium hydroxide (KOH) serves as a catalyst to help accelerate the process of separating water molecules in electrolysis. The container will be connected to a water trap and then a gas flowmeter or gas measuring instrument. This study shows that designing a wet type HHO gas generator with a pure DC source and a PWM source will have a correlation between HHO gas production and variations of the distance between two electrodes. At a distance of 2 cm the electrode produces HHO gas of >1200 ml with a pure DC source within 15 minutes. For an electrode distance of 4 cm the HHO gas produced is 1200 ml with a pure DC source within 15 minutes. And for an electrode distance of 6 cm the HHO gas produced is 880 ml with a pure DC source within 15 minutes. Meanwhile, at a distance of 2 cm from the electrode with a PWM source of HHO gas, the resulting HHO gas is >1200 ml in 15 minutes. For an electrode distance of 4 cm with a PWM source of HHO gas, 1030 ml is produced in 15 minutes. And for the electrode distance of 6 cm with a PWM source of HHO gas, 690 ml is produced in 15 minutes.Keywords: electrolyzer wet cell, HHO gas, distance of electrodes
SISTEM PENGONTROLAN PH PADA IKAN HIAS AIR LAUT DENGAN METODE FUZZY LOGIC MAMDANI Ramadhan Setya Novianto; Tri Nurwati; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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Water quality is the main parameter in the cultivation of freshwater ornamental fish and marine ornamental fish. To get healthy ornamental fish, water conditions must be maintained, one of which is the pH of the water. Generally fish need a water pH in the range of 6.5 to 8.5, which is considered the optimal range for good fish growth. Changes in the pH of seawater can adversely affect the life of marine biota, either directly or indirectly. Controlling the pH of water in marine ornamental fish using the Mamdani fuzzy logic method, by determining its membership function so that it can control the speed of pumping acid or alkaline solutions. From the results of the study, the tool can control the pH of seawater according to the setpoint membership function that has been set, namely 6.5-8.5 for 368-478 seconds by adjusting the pump output discharge according to the difference between the pH of the aquarium and the desired value.Keywords: pH, Fuzzy Logic Mamdani, Membeship Function
SISTEM PENGONTROLAN TOTAL DISSOLVE SOLID (TDS) AIR PADA AKUARIUM IKAN HIAS AIR LAUT MENGGUNAKAN METODE FUZZY LOGIC MAMDANI Muhammad Haichal Pambudi; Tri Nurwati; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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Keeping ornamental fish means maintaining water quality and one way is to control the amount of dissolved solids or Total Dissolve Solid (TDS). In this research, the TDS parameters were controlled using the design of the TDS controller. In this research, the design process of the YL69 sensor was carried out as a sensor for reading the TDS value and setting the pump speed using a fuzzy logic controller. The research was conducted in a seawater aquarium as the medium. The results of this research, it can be seen that the tool is able to balance the TDS according to the setpoint membership function fuzzy, namely 35-50 ppt for 256 seconds and 189 seconds. The system can also return the response to the setpoint when disturbed with a recovery time of 67 seconds. The water discharge coming out of the pump can also be adjusted according to the difference between the aquarium TDS and the desired value. Keywords: TDS, fuzzy, membership function.
SISTEM PENGONTROLAN KADAR GARAM AIR PADA AKUARIUM IKAN HIAS AIR LAUT MENGGUNAKAN METODE FUZZY LOGIC MAMDANI n/a Rifyal; Tri Nurwati; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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Ornamental fish is one of the major export commodities, besides that, there are also many domestic marine ornamental fish hobbyists. The maintenance of seawater ornamental fish needs to pay attention to the level of salt or salinity so that the fish can survive. Manually adjusting the salt level of seawater is not efficient and must be checked continuously. Therefore, an automatic salt level controller is needed. In this study, the sensor design process was carried out using the YL-69 sensor and pump speed regulation. From the results of this study, it can be seen that the tool can balance the salt content according to the setpoint membership function fuzzy, which is 32-37 ppt for 564-768 seconds. The water discharge coming out of the pump can also be adjusted according to the difference in the salt content of the aquarium with the desired value.Keywords: Salinity, fuzzy, membership function.
PENGARUH LAPISAN HIDROFOBIK PADA PERMUKAAN ISOLATOR POLIETILEN TERHADAP TINGKAT ARUS BOCOR DAN TEGANGAN FLASHOVER PADA VARIASI PAPARAN SINAR ULTRAVIOLET n/a Rizaq; Moch. Dhofir; Teguh Utomo
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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This study discusses the effect of the hydrophobic layer on the surface of the polyethylene insulator on the leakage current and flashover voltage with variations in exposure to ultraviolet light. This research was conducted by varying the conditions of ultraviolet irradiation on the insulator, test voltage, and also the test conditions in the form of dry and wet conditions. Variations in the duration of ultraviolet irradiation were for 0 hours, 24 hours, and also 48 hours. The insulator used is also divided into 2, an insulator with coating and a non-coating. Initial testing of the contact angle to determine whether the insulator is hydrophobic. Furthermore, distribution simulations and electric field efficiency calculations were carried out using FEMM 4.2 software, so that dielectric strength values could be calculated. After that, leakage current and flashover tests were carried out with voltage variations of 4kV, 8kV, 12kV, 16kV, and 20kV. The results obtained in this study are the greater the value of the test voltage given, the greater the value of the leakage current, while the flashover voltage has an inverse relationship with the leakage current. The greater the leakage current, the smaller the flashover voltage. In insulators with a hydrophobic layer, the value of the leakage current and flashover voltage can be improved. In addition, the addition of the duration of irradiation causes the value of the leakage current to be greater and the flashover to decrease in value.Keywords— insulator, leakage current, flashover, hydrophobic, polyethylene
ANALISIS KOORDINASI PROTEKSI OVERCURRENT RELAY PADA TRAFO 5 GARDU INDUK CEMPAKA 150/20KV Muhammad Afdal; Mahfudz Shidiq; Tri Nurwati
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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Relay is a tool that helps the protection system on the electric power network to check electrical equipment from disturbances that can damage the equipment, such as short circuit faults. Relays are divided into several types, one of which is the Over Current Relay (OCR). The OCR has the function of an electric power equipment function from short-circuit faults of phases. OCR has several different characteristics, such as the IEC inverse standard and the ANSI inverse standard. Each OCR characteristic has a difference in the basic formula and the resulting output curve. In IEC standard characteristics, the output of the relay is in the form of an L curve, that is, the greater the setting time, the greater the setting current in the relay. The substation has several transformers, each of which has two OCR relays, namely an OCR relay on the high voltage section (150kV) and an OCR relay on the middle low section (20kV). ETAP software is an application that can determine the coordination and output value of the work relay, making it easier to simulate relay work. However, if the relay simulation does not work according to the provisions, the settings on the relay can be changed to get the appropriate value. The Particle Swarm Optimization (PSO) method is one method that can improve the setting value on the relay so that it can work according to the provisions set by PT. PLN (Persero). In this study, the relay working simulation uses ETAP software and uses the PSO resetting relay method. The result of the travel time between the 150kV and 20kV sides of transformer 5 before using the PSO method is 3.05s on the 150kV side and 2.72s on the 20kV side, while before using the PSO method it is 3.4 on the 150kV side and 3.02s on the 20kV side. The time intervals before using and before using PSO were 0.33s and 0.38s. Based on the Manual of Conductor Protection and Control Maintenance, the delay between relays is 300-800 milliseconds. Therefore, the delay interval on the transformer relay 5 has worked well with using the PSO method or not according to the existing protection guidelines. Keywords — Relay, Over Current Relay, time setting, current setting, delay time, ETAP , particle swarm optimization.
OPTIMALISASI SISTEM MOODLEBOX BERBASIS RASPBERRY Pi SEBAGAI MODUL BELAJAR DARING PADA DAERAH TERTINGGAL Muhammad Wisem Royyan; Sigit Kusmaryanto; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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Jurnal ini berisikan tentang pengoptimalisasian sistem MoodleBox berbasi Raspberry Pi sebagai modul belajar daring pada daerah tertinggal. Sistem dasar MoodleBox dioptimalisasi lalu dilakukan pengujian untuk mengetahui performanya dengan beberapa parameter yaitu throughput, delay, waktu respon, jitter, dan persentase error. Optimalisasi dilakukan agar sistem dapat dapat dikoneksikan oleh lebih banyak perangkat dan memliki jangkauan transmisi jaringan WLAN yang lebih besar.Kata Kunci—Raspberry Pi, Moodle, Moodlebox, Optimalisasi, Router, Access Point, Apache JMeter, Wireshark, Throughput, Delay, Waktu respon, Jitter, Persentase Error
Sistem Pengkondisian Otomatis Suhu Dan Kekeruhan Air Budidaya Ikan Patin Berbasis Internet of Things (IoT) Lovinardo Devharo; n/a Rahmadwati; Ponco Siwindarto
Jurnal Mahasiswa TEUB Vol. 10 No. 6 (2022)
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Internet of Thing (IoT) is a concept where an object has the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. IoT really helps technological developments, especially in terms of monitoring. In this study, an IoT based automatic monitoring system for catfish that designed focus on the quality of its water. The variables that are controlled in this system are temperature and turbidity of water in the fish tank. Temperature control occurs when the temperature sensor detects a temperature lower than ideal temperature, then the system will turn on the heater until the temperature back to ideal. Water turbidity control occurs when the turbidity sensor detects that the water turbidity exceeds the normal limit, then the system will open the solenoid valve so that water will be discharged. The values of water temperature and turbidity will be displayed realtime on the LCD and Blynk.Keywords— catfish cultivation, internet of things, automatic, temperature, turbidity, monitoring

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