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Abstrak :
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.

Abstrak :
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 95.39°C.

Abstrak :
Keinginan masyarakat untuk dapat menjaga kondisi makanan serta mendapatkan minuman dalam keadaan segar membuat lemari pendingin menjadi salah satu alat rumah tangga yang sangat populer. Sebagian besar lemari pendingin tersebut menggunakan sistem pendingin konvensional yang saat ini sedang ramai diperbincangkan karena penggunaan refrigeran yang dapat merusak ozon. Penelitian ini bertujuan untuk membandingkan nilai unjuk kerja antara lemari pendingin berbasis termoelektrik dengan lemari pendingin berbasis absorpsi. Nilai unjuk kerja dalam hal laju pendinginan kabin, temperatur kabin, dan nilai COP, lemari pendingin termoelektrik mampu mengungguli performa lemari pendingin absorpsi, dengan nilai COP 0,093 - 0,15 lemari pendingin termoelektrik memiliki potensi yang besar untuk menjadi pengganti lemari pendingin konvensional.

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People desire to keep meals and drinks in a good conditions makes refrigerator become the most popular for a appliance. Almost all of refrigerator in the world using conventional refrigeration system which is using refrigerant as a working fluid. Today, many refrigerant are discused because it can makes ozon depletion. This research aim to compare between thermoelectric refrigerator performance and absorption refrigerator performance. The number of performance such as cooling rate, cabin temperature, and a number of COP, thermoelectric refrigerator has been able to outperform absorption refrigerator performace, with a number of COP between 0,093 ' 0,15, thermoelectric refrigerator is highly potential to become a future refrigerator.