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All Journal Trends in Mechanical Engineering Research Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Ryan Sadewo
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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Optimalisasi Grafena dalam Pengembangan Baterai Ramah Lingkungan Berkapasitas Tinggi Iksan Arif Munandar; Ryan Sadewo; Ammar Mustaqim; Arfan Pratama; Shalahuddin Hafizd Al Aziz
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 1 (2025): Januari: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i1.678

Abstract

Graphene is a two-dimensional lattice made of a single carbon atom and has extraordinary mechanical, electrical and thermal properties. These properties make it a very important material for a variety of applications, including energy management and electronics. This research adopts a systematic literature review approach to evaluate the role of graphene in improving battery performance and environmental sustainability. The results show that graphene significantly improves the performance of lithium-ion and lithium-sulfur batteries as well as sodium and magnesium-based batteries. In addition, graphene also has great potential for environmental applications such as water purification and pollutant adsorption. However, challenges such as production costs, toxicity, and scalability still need to be overcome for wider adoption.
EFFECT OF FLUID VELOCITY ON THE THERMAL EFFICIENCY OF A SHELL AND TUBE HEAT EXCHANGER THROUGH A COMPUTATIONAL FLUID DYNAMIC (CFD) APPROACH Iksan Arif Munandar; Ryan Sadewo
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.40543

Abstract

Heat exchanger efficiency is critical in industrial energy management. The relationship between fluid velocity and thermal performance in shell and tube heat exchangers (STHE) remains insufficiently quantified in an integrated ther-mo-hydraulic framework. This study investigates the effect of fluid velocity (0.5–2.5 m/s) on STHE thermal efficiency using Computational Fluid Dynamics (CFD) with the k-ω SST turbulence model, grounded in the Dittus-Boelter correlation, Darcy-Weisbach equation, and ε-NTU method. A three-dimensional geometry (shell diameter 380 mm, 104 tubes, 6 baffles) was simulated in ANSYS Fluent 2023 R1 using 1.8 million mesh elements, validated against the Bell-Delaware analytical method and experimental data from Sutoyo et al. (2024), with a maximum deviation of 6.3%. Results show that the overall heat transfer coeffi-cient increased sub-linearly from 1,245 to 2,087 W/m²· K, while pressure drop grew quadratically from 2,180 to 14,520 Pa. Thermal efficiency rose from 62.4% to 80.3% but exhibited saturation at higher velocities. The Performance Evalua-tion Criteria (PEC) peaked at 1.31 for v = 1.5 m/s, identifying this as the optimal operating condition with 76.5% thermal efficiency and manageable pressure losses. These findings confirm that v = 1.5 m/s represents the best thermo-hydraulic balance and provide practical guidance for energy-efficient STHE operation in industrial applications.
Co-Authors Ammar Mustaqim Arfan Pratama Iksan Arif Munandar Iksan Arif Munandar Shalahuddin Hafizd Al Aziz