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All Journal Jurnal Sains Materi Indonesia JURNAL INTEGRASI PROSES Prosiding Semnastek Jurnal Kimia Terapan Indonesia Jurnal Sosial dan Teknologi Makara Journal of Technology Prosiding Seminar Nasional Rekayasa dan Teknologi (TAU SNAR- TEK) JURNAL REKAYASA KIMIA & LINGKUNGAN
Asep Handaya Saputra
Departemen Teknik Kimia, FT - UI Kampus Baru UI, Depok, 16424
Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Other

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Simulation of Drag Reducer Polymer (DRP) for Single and Annular Two Phase Flow in Horizontal Pipe Dianita, Cindy; Saputra, Asep Handaya; Khairunissa, Puteri Amelia
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 2 (2018): Jurnal Rekayasa Kimia & Lingkungan (December, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i2.11784

Abstract

Drag reducing polymers (DRP) is one of drag reducer types that is widely used in industry as an additive to improve fluid flow efficiency in pipes. This study is conducted to analyze the parameters that influence the efficiency of DRP through developing equation model, and to see the phenomenon of drag reduction that occurs in fluid flow through computational fluid dynamic (CFD) simulation. The data used are obtained from experiments by Vancko (1997) for a single phase flow of water. As for two-phase annular flow, four experiments data are used namely by Vancko (1997), Al-Sarkhi and Hanratty (2001a,b) and Fernandes et al. (2004). Parameters such as fluid velocity and pipe diameter are analyzed based on the model equations proposed in this study. The final single phase flow equation model as the output of this study gives a value for onset drag reduction i.e 4.00 with an error up to 18%. While the proposed annular flow equation with and without drag reduction effect is only suitable when the condition of fluid film distribution is uniform and symmetrical with the error around 20%, i.e. for smaller diameter pipes. The CFD simulation results shows a change in the fluid velocity profile; becoming more parabolic, indicating an increase in the mean fluid velocity up to 0.43%, as the effect of DRP.
Business Feasibility of LNG Distribution for Nias Gas Power Plants Using MCDM Brama Halilintar; Asep Handaya Saputra; Wisnu Isvara
Jurnal Sosial Teknologi Vol. 6 No. 6 (2026): Jurnal Sosial dan Teknologi
Publisher : CV. Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jurnalsostech.v6i6.32906

Abstract

Nias Island represents an isolated power system in Indonesia that still relies heavily on diesel-based generation, resulting in high operational costs and greenhouse gas emissions amid Indonesia’s national energy transition toward Net Zero Emissions targets. Liquefied Natural Gas (LNG) is considered a transitional fuel to improve energy security and environmental performance in remote regions. This study aims to evaluate the business feasibility and infrastructure selection of LNG distribution for the Nias Gas Engine Power Plant by comparing an onshore terminal and a mini–Floating Storage Regasification Unit (FSRU). A quantitative decision-making approach using Multi-Criteria Decision Making (MCDM) with the Analytic Hierarchy Process (AHP) was applied, integrating technical, economic, and environmental criteria. Economic analysis includes NPV, IRR, and payback period, while environmental assessment follows IPCC 2006 emission guidelines. Findings show both alternatives are financially viable under an LNG price assumption of USD 7/MMBtu, with the FSRU generating higher NPV and IRR, while the onshore terminal demonstrates superior reliability and lower emissions. The study concludes that although both schemes are feasible, the onshore terminal is slightly preferred due to its stronger reliability and environmental performance, making it more aligned with long-term energy transition goals. Policy implications support Indonesia energy transition agenda acceleration
Co-Authors Adi Cifriadi, Adi Agus Haryono Agus Haryono Agus haryono Alia Badra Pitaloka Antika, Fitria Mega Ayyi Husbani Brama Halilintar Cindy Dianita Cindy Dianita, Cindy Dadi R. Maspanger, Dadi Evi Triwulandari Evi Triwulandari Fariza Ahmad Satriaperdana Hana Nabila Anindita, Hana Nabila Joddy Arya Laksmono Johan Johan Khairunissa, Puteri Amelia M. Hilman Anshari Masatoshi Kubouchi, Masatoshi Mohammad Nasikin Muhammad Ghozali Muhammad Ghozali Muhammad Shohibi, Muhammad Nur Anis Hidayah Puteri Amelia Khairunissa Setijo Bismo Siswahyudianto Tuti Indah Sari, Tuti Indah Vicario Burhan Wisnu Isvara