Experimental Study of Solar Refrigerator System using Activated Alumina and Methanol Adsorption Pair
Corresponding email: tburhanudin@yahoo.com
Published at : 28 Jul 2016
Volume : IJtech
Vol 7, No 5 (2016)
DOI : http://dx.doi.org/10.14716/ijtech.v7i5.1484
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
| 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 |
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