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All Journal International Journal of Renewable Energy Development JOIV : International Journal on Informatics Visualization Indonesian Journal Of Energy And Mineral Jurnal ELTEK
Handaja, Suka
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Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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Electrical Conductivity of Carbon Electrodes by Mixing Carbon Rod and Electrolyte Paste of Spent Battery Handaja, Suka; Susanto, Heru; Hermawan, Hermawan
International Journal of Renewable Energy Development Vol 10, No 2 (2021): May 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.31637

Abstract

As a consequence of increasing battery use, spent batteries are increasingly contributing to solid waste. This situation has the potential to create a severe environmental problem. Thus, the utilization of these spent batteries, including the reuse of some components, is essential. The reusable components of the spent battery are carbon rods and electrolyte pastes. In this work, these components were utilized to prepare a carbon-based electrode for reverse electrodialysis. These electrodes can be an alternative to commercial Ti-based electrodes. The important characteristics of an electrode are the electrical conductivity, porosity, and surface area of the particles. This study aimed to determine the best electrical conductivity exhibited by various mixtures of carbon rods and electrolyte paste taken from spent batteries. The spent battery contained 95% carbon, and the electrolyte paste of the spent battery contained 64% carbon, 19% zinc, and 5% manganese. Before mixing, the carbon rods were powdered using ball mills for 4 h; 85.6% of particles were sized <1 μm. The best electrical conductivity was obtained from a mixture of carbon rods and electrolyte paste in the weight ratio of 7:2, with electrical conductivity, porosity, and surface area of 2.75 S/cm, 0.019 cc/g, and 15.936 m2/g, respectively.
The Mitigation of CO2 Emissions in the Sea Water Desalination Plant with Reverse Electrodialysis Power Generation Handaja, Suka; Susanto, Heru; Hermawan
Indonesian Journal of Energy and Mineral Vol. 1 No. 1 (2021): IJoEM, Vol 1, No 1, 2021
Publisher : Politeknik Energi dan Mineral Akamigas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (501.017 KB) | DOI: 10.53026/IJoEM/2021/1.1/13

Abstract

Climate change is a major issue that is very interesting to discuss. Climate change is believed to be caused by the greenhouse gas effect. CO2 is one of the gases that causes the greenhouse gas effect. Therefore, to avoid the dangers of climate change, reducing CO2 emissions is the main topic in various articles. In this article, CO2 emission mitigation is analyzed in the sea water desalination plant using reverse electrodialysis power generation. Reverse electrodialysis is a power plant that does not produce CO2 emissions which converts energy from the difference in salinity of two solutions into electrical energy through selective ion membrane technology. There are 8 sea water desalination (SWD) unit which produces 242 tons/h of clean water for industrial activity and blowdown water of 3,161 tons/h, the blowdown water is wastewater. The SWD unit requires 3.043 tons/h of seawater as feed water, 0.164 MW of electricity and 86 tons/h of steam worth 64.1 MW as an energy. The energy are met from the combined heat and power operation. Combined heat and power require of fuel oil and fuel gas which produce CO2 emissions of 1,352,445,626 kgCO2/y. From the analysis on the SWD plant, the CO2 emission is 148,411,874 kgCO2/y. By implementing reverse electrodialysis power generation, blowdown water at the SWD plant which has a salinity concentration of 680 mol/m3 can produce electricity of 0.414 MW (3,636 MWh/y). If the electricity generated is used to substitute the electricity needs at the refinery plant, the CO2 emissions that can be mitigated is 2,955,915 kgCO2/y
Wireless Volume Corrector for Natural Gas Flow Metering Using ESP32 Microcontroller and Open-Source Web Server Handaja, Suka; Dewi, Astrie Kusuma; Triyanto, Roni Heru
JOIV : International Journal on Informatics Visualization Vol 8, No 3 (2024)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.8.3.2160

Abstract

The measurement of gas flow in energy transactions from an energy-producing company to an energy user is essential to evaluate, considering that measurement errors can accumulate, and losses can occur, which will be ongoing. The gas measurement process begins with measuring pressure and temperature parameters and the gas flow volume transacted. Then, the measured gas volume will be converted into a standard volume as the basis for gas buying and selling transactions (custody). This article conveys that a wireless volume corrector has been designed using the ESP32 microcontroller with Wi-Fi communication that can be integrated with the internet to support automatic meter reading systems. The measured data is collected in a database server using XAMPP, an open-system web server. Data stored on the database server is displayed via a web browser with a display of the last 5 data entered the web server. The web browser display is refreshed every second so that the display on the web browser is a live or online display. This research resulted in temperature, pressure, actual flow, and volume standard measurements with an error below 0.1%, which met the metrology requirements, instilling confidence in the system's reliability. This research proves that realizing a volume corrector with IoT technology can be done cheaply.
Studi penyebab dan penanganan fail detection pada shinkawa vibration sensors unit circulating water pump di PT. X menggunakan metode root cause failure analysis Barik, Zidny Alfian; Handaja, Suka
JURNAL ELTEK Vol. 21 No. 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/eltek.v21i2.4610

Abstract

Circulating Water Pump merupakan salah satu equipment penting pada proses operasi di PT X. Oleh karena itu sistem permesinan harus dijaga dan dirawat dengan baik agar selalu dalam kondisi yang prima. Untuk meningkatkan kehandalan, sistem dipasang pendeteksi getaran yang akan membuat sistem menjadi trip untuk menghindari dari kerusakan yang fatal dengan memasang Shinkawa Vibration Sensor yang akan mendeteksi kerusakan bantalan yang dideteksi dengan adanya getaran berlebih. Prinsip kerja dari Shinkawa Vibration Sensor adalah dengan menggunakan Non-Contact Displacement Transducer yaitu dengan mengukur gap antara sensor dan bantalan. Pada artikel ini, sistem pendeteksi getaran mengalami fail detection, sistem trip tetapi semua peralatan dan bantalan dalam kondisi baik. Berdasarkan analisa menggunakan Root Cause Failure Analysis disimpulkan penyebabnya adalah adanya getaran akibat petir. Untuk itu dilakukan penanganan dengan setting ulang agar tidak terulang kembali   ABSTRACTThe Circulating Water Pump is one of the important equipment in the operational process at PT X. Therefore, the machinery system must be maintained properly so that it is always in prime condition. To increase reliability, a vibration detector is installed in the system which will trip the system to avoid fatal damage by installing a Shinkawa Vibration Sensor which will detect bearing damage which is detected by excessive vibration. The working principle of the Shinkawa Vibration Sensor is to use a Non-Contact Displacement Transducer, namely by measuring the gap between the sensor and the bearing. In this article, the vibration detection system experienced failed detection, the system tripped but all equipment and bearings were in good condition. Based on analysis using Root Cause Failure Analysis, it was concluded that the cause was vibrations caused by lightning. For this reason, handling is carried out by resetting so that it does not happen again.
Co-Authors Astrie Kusuma Dewi, Astrie Kusuma Barik, Zidny Alfian Hermawan Hermawan Hermawan Heru Susanto Triyanto, Roni Heru