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Azridjal Aziz
Laboratorium Rekayasa Termal, Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau
Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Mechanical Engineering

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ANALISA PERPINDAHAN PANAS KOTAK PEMANAS DAN PENDINGIN YANG MENGGUNAKAN MODUL TERMOELEKTRIK SEBAGAI SUMBER KALOR Dani Ikhsan Saputra; Azridjal Aziz
Jurnal Sains dan Teknologi Vol 18 No 1 (2019): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik - Universitas Riau

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Thermoelectric is the process of converting temperature differences into electrical energy or vice versa. This phenomenonhas been developed into a module so that it can be used as a power plant or cooling and heating device. in the study heattransfer analysis was carried out on heating and cooling boxes using thermoelectric modules as heat sources. The purposeof the heat transfer analysis in cooling and heating boxes is to find out what heat transfer value occurs in hot and coldboxes using thermoelectric modules, while for the variables needed to analyze heat transfer that occurs in heating andcooling boxes 1) dimensions of the heating box and coolant, 2) determine the ambient temperature outside the box andthe performance temperature in the box, 3) calculate the heat transfer value that passes through the wall of the box, 4)calculate the heat transfer outside the box wall box, 5) calculate the heat transfer inside the box wall. The result is a heattransfer analysis that occurs in a heating box, which is 2.28 W and in a cooler of 2.4 W.
KARAKTERISTIK PIPA KALOR DENGAN FLUIDA KERJA ASETON, FILLING RATIO 80 % PADA BERBAGAI KEMIRINGAN Rahmat Iman Mainil; Ferly Septian Iskandar; Azridjal Aziz
Jurnal Sains dan Teknologi Vol 18 No 2 (2019): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik - Universitas Riau

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This paper presents an experimental investigation of thermal characteristics of heat pipe (length of 400 mm and diameterof ¼ ̋) with working fluid aseton. The filling ratio was controlled at 80 %. The effect of heat input and inclination of heatpipe on the thermal characteristics of the heat pipe had been studied with variations of (3-6 W) and (0-90°), respectively.The result showed that the high heat input and inclination resulted to the increase of thermal performance of heat pipe
PENGUJIAN PENGERING TENAGA SURYA TIPE PEMANASAN LANGSUNG UNTUK PENGERINGAN PISANG PADA KONDISI BERBEDA Azridjal Aziz; Ahmad Surya; Rahmat Iman Mainil
Jurnal Sains dan Teknologi Vol 18 No 2 (2019): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik - Universitas Riau

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Abstract

The direct solar dryer has been tested for drying bananas under different conditions. The dryer being tested is a hybriddryer that can be used with other energy sources, in addition to using solar energy as the main energy source during theday, while LPG gas is used for drying at night. The results showed that the highest temperature, the highest decrease inwater content in the test with LPG was obtained on shelf 6, while the lowest was obtained on shelf 1, because the heatsource was at the bottom of the dryer on shelf 6, the opposite happened to dry using solar energy because the heat sourcecame from the top of the shelf 1. In testing with LPG, the highest temperature that can be achieved is 84.7 ° C, on shelf6, while the lowest temperature is 52.3 ° C on shelf 1, on the other hand, the temperature of bananas using solar poweris the highest temperature on the shelf 1 at 11.00 WIB at 62.9 ° C and the lowest on shelf 1 at 17.00 WIB at 37.1 ° C. Thetotal energy requirement for drying in the test using LPG was 4681.92 kJ, while the total energy requirement for dryingin the test using solar power was 3176.24 kJ. Drying using solar energy is more economical than using LPG gas, but thedrying time is longer than LPG. Drying using a dryer technology have better quality and hygienic than open sun drying.
Co-Authors Ahmad Surya Dani Ikhsan Saputra Ferly Septian Iskandar Rahmat Iman Mainil