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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 Jurnal Sistem Teknik Industri Sprocket : Journal of Mechanical Engineering Dinamis
Tulus Burhanuddin Sitorus
Mechanical Engineering Universitas Sumatera Utara
Aerospace Engineering 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 Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : Jurnal Teknosains

 1 
KINERJA KOLEKTOR TIPE PLAT DATAR PADA MESIN PENDINGIN ADSORPSI TENAGA SURYA DI KOTA MEDAN Tulus Burhanuddin Sitorus
Jurnal Teknosains Vol 7, No 2 (2018): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.35327

Abstract

The performance of a flat plate collector on adsorption refrigerator driven by the solar collector was investigated in the present work. Based on a study conducted no researcher studies the performance of solar collectors used in adsorption cooling system. The adsorbent used in the collector was 20 kg ordinary powder activated carbon of coconut shell produced in the Sumatera Utara province of Indonesia, 5 liters of methanol as adsorbate and 6 liters of water as the medium that was cooled. The experiments were carried out under varying weather conditions with total solar radiation about 12619-17807 kJ/m2/cycle in Medan city. The experimental results show that the values of collector efficiency obtained were about 52.11-53.92%. The values of coefficient of performance (COP) obtained were in the range of 0.0318-0.0449. The results of the statistical study suggest that the effect of the weather conditions on collector efficiency thereabout 96%.
Efektivitas sistem gabungan penukar kalor-udara tanah dengan kolektor surya untuk pendinginan ruangan di kota Medan Tulus Burhanuddin Sitorus; Syahrul Abda
Jurnal Teknosains Vol 11, No 2 (2022): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.61271

Abstract

Energy is one of the main things in a country's economic growth, but saving energy is one of the main challenges in the world today. In developing countries such as Indonesia, the energy sector is considered a crucial sector, because consumption demand increases compared to production. Therefore, to reduce energy consumption it is necessary to save energy. Earth-air heat exchanger cooling systems are one of them. The research objective was to determine the effectiveness performance of the EAHE system on changes in room temperature according to weather conditions in Medan city. The implication of this research is to reduce the consumption of electricity or fuel oil and environmental pollution. The test room has dimensions of 200 cm x 200 cm x 200 cm. Testing using a flat plate type solar collector to help the process of air movement by taking advantage of differences in air temperature. The testing process starts at 08.00 WIB to 17.00 WIB for nine hours everyday. The measurement results show that various weather conditions include radiation intensity, ambient temperature and humidity. During the test, the radiation intensity ranged from 38.10-892.12 W/m2, the variation in ambient temperature from 24.65-35.29oC and the average air humidity 68.93%. The experimental data showed that the fluctuation of indoor air temperature ranged from 23.01 to 31.84oC and the average room temperature 27.83oC. This study resulted in an average effectiveness value of the EAHE system of 51.49%. According to the result of the statistical studies, the weather conditionsthe effectiveness of the EAHE system by51,56%.
Co-Authors 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 Tekad Sitepu Tekad Sitepu Terang U. H. S. G. Manik Wiranto Arismunandar Yosua F.S.R Zebua Zulkifli Lubis Zulkifli Lubis