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Wiratno Wiratno
Universitas Negeri Manado
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Analisis Perbandingan Performa Mesin Diesel Menggunakan Biodiesel B20 dan HSD pada Mesin Mitsubishi 4 Silinder Yohan Wibisono; Barokah Barokah; Parabelem Tinno Dolf Rompas; Wiratno Wiratno; Baihaqi Baihaqi
FRONTIERS: JURNAL SAINS DAN TEKNOLOGI Vol 3, No 1 (2020): APRIL 2020
Publisher : Universitas Negeri Manado

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Abstract

Mesin diesel merupakan mesin pembakaran dalam menggunakan bahan bakar yang bersumber dari minyak bumi. Terkait dengan ketersediaan bahan bakar minyak bumi sudah digalakkan minyak campuran yang dikenal Biodiesel. Penelitian ini bertujuan menguji performa mesin diesel yaitu pada Spesifik Fuel Oil Consumtion (SFOC). Metode yang digunakan yaitu dengan cara melakukan ekperimen pada mesin diesel Mitsubishi 4 silinder 69 kW 1500 rpm dengan menggunakan bahan bakar Biodiesel B20 dan HSD. Performa mesin diesel menggunakan Biodiesel dibandingan dengan performa mesin menggunakan HSD. Hasil analisis menunjukkan bahwa SFOC pada pembakaran Biodiesel memiliki kecenderungan menurun sejalan dengan naiknya daya mesin. Nilai penurunan SFOC lebih tinggi jika dibandingkan dengan HSD.Kata kunci : Biodiesel dan HSD; Mesin Diesel; Performa.
Study Of Coastline Characteristics In Banten Shipping Polytechnic Rahmat Santoso; Soleh Uddin; Wiratno Wiratno; Mestiria Harbani Sitepu; Mulkan Nuzapril; Rama Agus Mulyadi
Berkala Perikanan Terubuk Vol 51, No 3 (2023): November
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/terubuk.51.1.2117-2122

Abstract

The character of the coastline is one of the important things to know, this is related to beaches where processes occur due to the influence of coastal conditions in achieving balance with the impacts that occur from natural factors and human activities. Geographically, the beach in the Banten shipping polytechnic area faces the open sea. Abrasion and accreation are very likely to occur on the coastline in the Banten Polytechnic area, soil texture and sedimentation have a big influence on changes in the coastline. This research aims to determine the characteristics of the coastline in the Banten Polytechnic area. The research method uses a descriptive method by tracking along the coastline and taking sediment samples using the methodpurposive sampling. Sampling was carried out in August 2023 with 3 observation stations and each station consisted of 4 observation points. Sample analysis uses the Granulometry method. The results of research on the character of the coastline in the Banten Shipping Polytechnic area show that there are thick piles of rubbish consisting of vegetation and the coastline is experiencing abrasion. The type of coastline sediment in the Banten Polytechnic area has an intermediate sand fraction (4.8%-80.8%) located at soil points A2 and C1, intermediate clay (2.4%-64%) located at soil points B4 and C3, and intermediate dust (15.2%-80.8%) is located at Soil points C1, C2, C3 and A2 with an average texture class having a clay fraction.
Co-Authors Baihaqi Baihaqi Barokah Barokah Mestiria Harbani Sitepu Mulkan Nuzapril parabelem tinno dolf rompas Rahmat Santoso Rama Agus Mulyadi Soleh Uddin Yohan Wibisono