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All Journal R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Poros Teknik Mesin Unsrat
Efrando Manullang
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Automotive Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Potential and Challenges of Hydrogen Development as New Renewable Energy in Indonesia Efrando Manullang; Nazaruddin Sinaga
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 2 (2022): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i2.1647

Abstract

The use fossil energy consumption in Indonesia is increasing along with population growth and industrial development. Fossil energy oil and coal can produce greenhouse gas emissions and environment pollution. The largest producer of CO2 emissions comes from exhaust gases in the production process and motor vehicles. Indonesia's energy mix target in 2025 is around 23% from New and Renewable Energy (NRE). Given the importance of using NRE, Indonesia is starting to look for alternative energy that is environmentally and sustainable, like hydrogen energy. Green hydrogen technology has the potential to be developed in Indonesia. Hydrogen production processes commonly carried out are through the electrolysis of water, methanol, and biomass. The use of hydrogen can be applied to motor vehicles and power plants. Hydrogen can reduce greenhouse gas emissions. However, Indonesia has problems in developing green hydrogen technology, one of which is the high production cost, so it requires other parties to develop it.
ANALISIS TEGANGAN PADA BEJANA TEKAN VERTIKAL 13ZL100040291 DI PT. ANEKA GAS INDUSTRI Efrando Manullang; Stenly Tangkuman; Benny Maluegha
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 5 No. 2 (2016): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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ABSTRACT A pressure vessel is a container for a pressurized fluid, both liquid or gas. The stress on the shell of pressure vessel must have serious attention because the stress is the basic in determining the dimension and the type of material used, and also the treatment for the pressure vessel. This research intended to obtain the maximum stress in the pressure vessel 13ZL100040291 of the working pressure. The object of this research was a vertical type cryogenic pressure vessel at PT. Aneka Gas Industri, sagrat, Bitung. The analysis was conducted by applying the finite element method aided by softwares. Research results showed that the maximum stress at the inner vessel based on the software simulation is 203,79 MPa, with nominal stress of 33.965 MPa. The nominal stress based on the calculation using mechanical theory is 37,24 MPa. The stress calculation in simulation using software had considered the stress concentration. Afterwards, based on the simulation results, it was found that the stress concentration at the inner vessel and outer vessel is 6. The maximum stress calculated by the simulation software at inner vessel and outer vessel is stell in the safe limit, because the Von Mises stress is smaller than the allowed stress of each material used. Keyword: pressure vessel, inner vessel, outer vessel, stress
Co-Authors Benny Maluegha Nazaruddin Sinaga Stenly Tangkuman