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This Author published in this journals
All Journal Jurnal Ilmiah Giga Indonesian Journal of Computing, Engineering, and Design
As Natio Lasman
Nuclear Energy Regulatory Agency (BAPETEN) Republic of Indonesia
Arts Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Heat Transfer Analysis and Friction Factor of Ternary Nanofluids with Twisted Tape Inserts Ramadhan, Anwar Ilmar; Azmi, Wan Hamzah; Lasman, As Natio; Umar, Efrizon; Sharma, Korada Viswanatha
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 2 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v6i2.473

Abstract

This study investigates the heat transfer efficiency and friction factor of ternary nanofluids (Al₂O₃-TiO₂-SiO₂) in a simple tube equipped with a twisted tape. Ternary nanofluids, prepared using a volume-based composition ratio of 20:16:64, were tested at various volume concentrations ranging from 0.5% to 3.0%. Forced convection heat transfer experiments were conducted under varying Reynolds numbers (2,300 to 12,000) and a bulk temperature of 70 °C. The results indicate that the maximum viscosity occurs at a volume concentration of 3.0%. The highest increase in heat transfer for ternary nanofluids in a simple tube with twisted tape (H/D = 2.0) was achieved at a volume concentration of 3.0%, reaching 225.35%. Compared to a plain tube, the average thermal performance factor (TPF) of the twisted tape was significantly improved, with a further increase observed when the volume concentration rose from 2.73% to 3.22%.    
Comprehensive Review of Strengths and Weaknesses of Solar-Biomass Hybrid Power Systems: A Systematic Literature Approach Setiabudi, Fitri; Nur, Muhammad Syukri; Uyun, Aep Saepul; Lasman, As Natio
Jurnal Ilmiah Giga Vol. 28 No. 1 (2025): Volume 28 Edisi 1 Tahun 2025
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47313/jig.v28i1.4195

Abstract

Solar-biomass hybrid power systems (SBHPS) offer a promising solution to global energy and climate challenges by integrating two complementary renewable sources. This study presents a systematic literature review (SLR) based on 543 articles retrieved from Scopus and Web of Science (2014 to 2024), with 76 full texts screened, 26 meeting the inclusion criteria, and 18 scoring ≥4/5 in quality based on CASP and MMAT frameworks. The analysis identifies key advantages of SBHPS, including improved energy efficiency, supply reliability, greenhouse gas emission reduction, and local resource utilization. Conversely, barriers include high capital costs, resource dependency, technical complexity, and policy constraints. The novelty of this review lies in its integrated, multi dimensional synthesis across technical, economic, environmental, and social aspects, filling a gap left by earlier SBHPS reviews. The findings offer practical insights for energy planners, technology developers, and policymakers aiming to implement sustainable and regionally adapted hybrid systems
Co-Authors Anwar Ilmar Ramadhan Azmi, Wan Hamzah Efrizon Umar Nur, Muhammad Syukri Setiabudi, Fitri Sharma, Korada Viswanatha Uyun, Aep Saepul