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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY
Fikri Fahlevi Nasution
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Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengujian Desalinasi Surya Tipe Single Basin Double Slope Kemiringan 45° Dengan Porositas Sumbu Serap 0,20 mm Pada Kapasitas 8 Liter Fikri Fahlevi Nasution; Awaludin Martin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Due to the very rapid population growth, the need for clean water will continue to increase year by year. This makesthe availability of clean water a major issue today, especially for coastal people. Coastal residents have to buy cleanwater in their daily lives, and coastal residents also use rainwater. However, the availability of clean water still existsin nature. In the dry season, it is very difficult to get clean water. One solution to this lack of clean water is to obtainclean water by desalination. Desalination of seawater is the process of maintaining clean water by removing excesssalt from the water and using sunlight to create freshwater. This study describes an experimental study of theefficiency of solar desalination plants using solar energy. The experiments was performed with a sponge pore size of0.2 mm and an initial volume of 8 liters. With an average solar radiation of 719.9 W/m2, the desalinated air producedis 2.944 kg and the efficiency is 25.15%.Keywords : Solar Desalination, Porosity, Sponge
Potential Reduction of CO2 Emissions in Transportation Bus Vehicles with Diesel Fuel and Compressed Natural Gas : Case Study: Fuel Mix Variations Fikri Fahlevi Nasution; Martin, Awaludin
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 1 (2025): June 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i1.11107

Abstract

The Indonesian government continues to strive to reduce CO2 emissions, with a target reduction of 29% by 2030. In urban areas, motor vehicles are the largest contributors to CO2 emissions, accounting for 70%. One of the steps that can be taken to reduce CO2 emissions is by using Compressed Natural Gas (CNG) as a vehicle fuel. The purpose of this writing is to study the impact of replacing Diesel Fuel with CNG on the CO2 emissions generated by transportation buses.. Based on the discussion, the CO2 emissions produced by 100 city buses (fuel consumption of 100 L/unit/day) are 26.20 tons of CO2/day, 785.96 tons of CO2/month, and 9,562.56 tons of CO2/year for 100% diesel fuel. For 100% CNG fuel, the emissions are 0.02 tons of CO2/day, 0.63 tons of CO2/month, and 7.72 tons of CO2/year. CO2 emissions are reduced by 2.61 tons of CO2/day, 78.54 tons of CO2/month, and 955.49 tons of CO2/year for every 10% reduction in diesel fuel usage. CO2 emissions can be reduced by up to 99.9% by replacing diesel fuel with CNG. The area of forest required to eliminate CO2 with 100% diesel fuel composition annually is 16.79 hectares, while with 100% CNG composition, it is only 0.01 hectares. The forest area required decreases by 1.67 hectares for every 10% reduction in diesel fuel composition.
Co-Authors Awaludin Martin