Journal of Energy, Material, and Instrumentation Technology

Analysis of the Effect of Saltwater (NaCl) Solution Concentration During the Quenching Process on the Microstructure and Hardness of Medium Carbon Steel

Agus Supriadi — 2025-02-28

Centrifugal pumps type Overhung 4 size 4x11 often experience sand deposits and erosion problems, especially in the oil and gas industry, resulting in reduced productivity and increased repair costs. This study evaluates the application of the Piping Plan 13 API 682 as a solution to this problem. The 5-Why Analysis method is used to identify the root cause of sand deposits, which were associated with sand contamination from a liquid source and the absence of an effective filtering system. The implementation of Piping Plan 13 aims to prevent sand deposits in critical areas, such as the Pedestal Cover and Pedestals, by leveraging the circulation design of the pipeline. The results showed a 19.75% increase in pump productivity and a 76.12% reduction in repair costs. Productivity increases reached 336,000 barrels (about 53,419,731 liters) over 16 days of operation, while the repair cost fell from Rp6,699,950 to Rp1,600,000. These findings indicate that Piping Plan 13 API 682 is an effective solution to increase the life and performance of the centrifugal pump and reduce maintenance costs in operating conditions with high sand contamination.

Prototype of a Floating-Type Nanohydro Generator as a Lighting Energy Source for Agricultural Land

Gurum Ahmad Pauzi — 2025-02-28

A floating-type nano-hydro generator prototype has been developed as a source of electrical energy for lighting in agricultural areas. This generator is designed to produce electrical energy without modifying the flow medium, making it easy to apply in various water channels such as irrigation systems, small rivers, and large rivers, as the generator can automatically adjust to the ebb and flow of water. The electricity generated benefits agricultural lands far from PLN (Indonesia's state electricity company) power sources. The average voltage produced in this study was 19.19 volts, with an average generator speed of 30.1 rpm and a turbine speed of 104.4 rpm. Meanwhile, testing results showed voltages ranging from the lowest rotation of 8 volts to the highest rotation of 56 volts. The voltage output from this device can be used to power lights or other small electrical needs.

Design of Single Axis Solar Tracker Using Fresnel Lens Based on Internet of Things (IoT) For Optimizing Solar Cell Output Power

Rifki Mohamad Kurniawansyah — 2025-02-28

A single-axis solar tracker using a Fresnel lens has been realized to optimize the output power of solar cells. The solar tracker system is monitored using a website that displays the value of voltage (volts), current (amperes), tilt angle (0), and output power (watt) in real-time. This single-axis solar tracker is designed using a 20 Wp solar panel, Fresnel lens, Solar Charger Controller, Accumulator, Arduino Nano, ESP32, Buck Converter, L298N motor driver, FZ0430 sensor as voltage meter, ACS712 sensor as current meter, MPU6050 sensor as angle meter. The method used in this research includes collecting data on voltage, current, tilt angle, power generated by solar panels, and light intensity and temperature emitted by the sun for 3 days without and 3 days using lenses. This tool can measure the voltage value of direct electricity with an error rate of 1.88%, accuracy of 98.12%, and precision of 99.15%. The electric current measurement has an error rate of 3.82%, an accuracy of 96.18%, and a precision of 96.84%. Light measurement has an error rate of 1.85%, an accuracy of 98.15%, and a precision of 98.78%. The angle measurement has an error rate of 5.95% and an accuracy of 94.05%. The single-axis solar tracker system using Fresnel lenses has a power efficiency of 37.09% compared to the single-axis solar tracker without Fresnel lenses.

Differential and Cumulative Particle Size Distribution Analysis using Home Made Sieving Equipment

Runita Rizkiyanti Putri — 2025-02-28

Particulate solids remain the most commonly used materials in the industry due to their characteristics, such as stability, purity, and ease of transportation. Particle size is one of the physical characteristics of a particulate solid that may affect its chemical characteristics. Hence, understanding particle size will give a better insight into a solid material's physical and chemical properties. The oldest method to determine particle size is using a siever to separate particles in bulk based on their size, more commonly called Particle Size Distribution (PSD).

This research aimed to design home-made sieving equipment for particle size analysis. The sieving equipment was made out of acrylic and four different mesh sizes to help separate particles based on the opening of each mesh. In addition, an agitator table was also built to help the particle flow smoothly along the silver based on its particle size. Six different materials were chosen to be tested using the newly built equipment: table salt, whey powder, wheat flour, coarse coffee ground, cement, and chalk dust. Based on the sieve analysis, cement and chalk dust showed consistent particle size uniformity compared to other materials. With limitations such as broad mesh sizes, it is recommended to have more mesh sizes to get better particle size distribution of the sample.

Sand Deposit Control Strategy on Centrifugal Pump Type Overhung 4 Size 4x11 Using API 682 Piping Plan 13

Miftahul Fahrizal Nur Malik — 2025-02-28