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All Journal Jurnal Teknik Mesin TEKNIK Rotasi Jurnal Simetris Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Teknosains Rekayasa Mesin EMITTER International Journal of Engineering Technology Media Teknika Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Sistem Teknik Industri Sprocket : Journal of Mechanical Engineering Dinamis
Tulus Burhanuddin Sitorus
Mechanical Engineering Universitas Sumatera Utara
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Journal : Media Teknika

 1 
Analisa Kinerja Lemari Pendingin Alami Sebagai Penyimpan Sayur dan Buah-buahan dengan Media Pendingin Air Sitorus, Tulus Burhanuddin; Sitepu, Tekad
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (969.702 KB) | DOI: 10.24071/mt.v11i2.520

Abstract

One application of direct evaporation cooling system was a natural refrigerator. The advantages of this natural refrigerator was operating without using electrical energy or mechanical energy and environmentally friendly. This study aims to gain a performance analysis of natural refrigerator as a store of vegetables and fruits which uses water as the cooling medium. Material of natural refrigerator consists of teak wood and gunny. Experiments were conducted during seven days in the open space which exposure to solar radiation. The measurement of weather parameter  was done by using HOBO devices and to record temperature changes of vegetables and fruits in the natural refrigerator was used acquisition data. The results showed that the efficiency of natural refrigerator maximum that can be obtained was 14.7% with an average air temperature of 25,55oC, air humidity average of 91.34% and an average solar radiation of 108.45 W/m2. The experimental data showed that the freshness of vegetables and fruits heavily influenced by weather conditions.
Karakteristik Kinerja Mesin Diesel Stasioner dengan Bahan Bakar Campuran Biodiesel dari Biji Kemiri Sunan Ariani, Farida; Ginting, Elizabeth; Sitorus, Tulus Burhanuddin
Media Teknika Vol 12, No 1 (2017)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (746.403 KB) | DOI: 10.24071/mt.v12i1.945

Abstract

This study aims to investigate the characteristics of stationary diesel engines which use a mixture of diesel fuel - biodiesel from sunan candlenut seed. Experiments were done with diesel fuel, B5, B10, B15, and B20 with a variety of engine rotation and load variations. The results showed that the values of torque, power and thermal efficiency when the engine uses B5, B10, B15, and B20 tends to decrease if compared when engine use diesel fuel. And the specific fuel consumption when use B5, B10, B15, and B20 increased. From the results of experiments and calculations, the maximum power of 3.01 kW, minimum specific fuel consumption of 228.58 g/kWh and maximum thermal efficiency of 37.61% when using diesel fuel. However, exhaust emissions were measured include opacity, carbon monoxide and hydrocarbons when the engine using biodiesel B5, B10, B15, and B20 decreased. By using statistical study also obtained correlation and regression equations involving engine performance parameters.
Analisa Kinerja Lemari Pendingin Alami Sebagai Penyimpan Sayur dan Buah-buahan dengan Media Pendingin Air Tulus Burhanuddin Sitorus; Tekad Sitepu
Media Teknika Vol 11, No 2 (2016)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/mt.v11i2.520

Abstract

One application of direct evaporation cooling system was a natural refrigerator. The advantages of this natural refrigerator was operating without using electrical energy or mechanical energy and environmentally friendly. This study aims to gain a performance analysis of natural refrigerator as a store of vegetables and fruits which uses water as the cooling medium. Material of natural refrigerator consists of teak wood and gunny. Experiments were conducted during seven days in the open space which exposure to solar radiation. The measurement of weather parameter was done by using HOBO devices and to record temperature changes of vegetables and fruits in the natural refrigerator was used acquisition data. The results showed that the efficiency of natural refrigerator maximum that can be obtained was 14.7% with an average air temperature of 25,55oC, air humidity average of 91.34% and an average solar radiation of 108.45 W/m2. The experimental data showed that the freshness of vegetables and fruits heavily influenced by weather conditions.
Co-Authors Ahmad Y Nasution Alfian Hamsi Andi Syahputra Arief Hariyanto Daniel F.B Sinaturi David Chandra Derrick Tanadi Elisabeth Ginting Farida Ariani Farida Ariani Ferry Sembiring Ginting, Elizabeth Jaya Arjuna Jonathan A.R Siagian Lestina Siagian Manik, Terang U.H.S. Ginting Manik, Terang UHS Ginting Manik, Terang UHSG Mulfi Hazwi Rachmat Kentardjo Ridha Irfandi Ryan Alexander Sembiring, Ferry Sembiring, Ferry Situmorang, Mangontang Suprihatin - Syahrul Abda Syahrul Abda Syaifuddin Lubis Tekad Sitepu Tekad Sitepu Terang U. H. S. G. Manik Wiranto Arismunandar Yosua F.S.R Zebua Zulkifli Lubis Zulkifli Lubis