• Vol 7, No 5 (2016)
  • Mechanical Engineering

Experimental Study of Solar Refrigerator System using Activated Alumina and Methanol Adsorption Pair

Tulus Burhanuddin Sitorus, Farel Hasiholan Napitupulu, Himsar Ambarita


Cite this article as:

Sitorus, T.B., Napitupulu, F.H., Ambarita, H. 2016. Experimental Study of Solar Refrigerator System using Activated Alumina and Methanol Adsorption Pair. International Journal of Technology. Volume 7(5), pp. 910-920

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Tulus Burhanuddin Sitorus Department of Mechanical Engineering, Faculty of Engineering, University of Sumatera Utara, Kampus USU Medan 20155, Indonesia
Farel Hasiholan Napitupulu Department of Mechanical Engineering, Faculty of Engineering, University of Sumatera Utara, Kampus USU Medan 20155, Indonesia
Himsar Ambarita Department of Mechanical Engineering, Faculty of Engineering, University of Sumatera Utara, Kampus USU Medan 20155, Indonesia
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Abstract
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This study investigates the performance of a solar adsorption refrigerator using activated alumina and methanol adsorption pair. The experiments were carried out for 24-hour. The refrigeration was completed during seven cycles with varying weather conditions. A flat plate type collector was used with an area of 0.25 m2 and tilt angle of 30o. Theoretical calculations show that, the maximum collector efficiency is 47.15% when the maximum solar radiation obtained is 936.9 W/m2. In this research, the maximum value of the COP is 0.0991 when the total solar energy is 16.485 MJ/m2 and the minimum value obtained is 0.0919 when the total solar energy is 7.609 MJ/m2. The experiment results show that the adsorption pair system can deliver an evaporator temperature of about 9.92°C and the cooling load can be achieved by a heat source with a temperature range of 83.95°C and 95.39oC.

Activated alumina and methanol; Refrigerator performance; Solar energy

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