Jurnal Mahasiswa TEUB http://elektro.studentjournal.ub.ac.id/index.php/teub Jurnal ini memuat publikasi hasil karya mahasiswa Teknik Elektro Universitas Brawijaya en-US Jurnal Mahasiswa TEUB RANCANG BANGUN PEMBANGKIT LISTRIK TENAGA PIKOHIDRO (PLTPH) DENGAN TURBIN ULIR (ARCHIMEDES SCREW) http://elektro.studentjournal.ub.ac.id/index.php/teub/article/view/1862 <p>ABSTRACT</p> <p><em>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.</em></p> <p><strong><em>Keywords</em></strong><em> <strong>:</strong> </em><em>screw turbine, screw angle, renewable energy, new technology, PLTPH, low head</em></p> Nurul Irfan AlFandy Erni Yudaningtyas Gaguk Asmungi Copyright (c) 2022 Jurnal Mahasiswa TEUB 2022-11-08 2022-11-08 10 6 PENGARUH VARIASI KONSENTRSAI LARUTAN KOH TERHADAP UNJUK KERJA ELEKTROLISER TIPE WET CELL http://elektro.studentjournal.ub.ac.id/index.php/teub/article/view/1864 <p>This study uses a wet cell type HHO gas generator which was developed with the addition of PWM as a control <br>of duty cycle, frequency, and voltage. The duty cycle in PWM is set at 75% and the frequency is set at 1 kHz. <br>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 <br>catalyst used was KOH with variations of 10 grams, 15 grams, and 20 grams dissolved in 1 L of distilled water. <br>Each test was carried out with a pure DC source and with a PWM source for a period of 15 minutes for each <br>test. Parameters measured in the test are voltage, current, temperature, and volume of HHO gas. Meanwhile, <br>what is calculated is the power needed by the HHO generator and the efficiency of the HHO generator. The <br>results obtained in this study were the average volume of the highest HHO gas was 94.67 ml/minute when using <br>a pure DC source and 20 grams of KOH. The smallest power consumption is 33.90 - 41.25 Watt when using a <br>PWM and 10 gram KOH source. The highest efficiency is 21.95% when using a 20 gram PWM and KOH <br>source.<br>Keywords: HHO gas, Pulse Ikhsaniyusuf Alfiansyah Putra Moch. Dhofir Lunde Ardhenta Copyright (c) 2022 Jurnal Mahasiswa TEUB 2022-12-01 2022-12-01 10 6