ADAPTATION OF AN ADSORPTIVE SOLAR REFRIGERATOR TO MOROCCAN CLIMATES

In this paper, we introduce a model taking account of the real operation of an adsorptive solar refrigerator using activated carbon-methanol pairs, as a function of the climatic conditions: ambient temperature and insolation. The model is used to simulate the operation of the refrigerator in two Moroccan climates: Rabat, temperate and humid, and Marrakech, dry and hot. The numerical simulation shows that the behaviour of the refrigerator is different from one climate to the other. In Rabat, which has a Mediterranean climate, the cold room temperature can be maintained at a value practically always less than 5 degrees C; whereas in Marrakech, which has a pre-Saharan climate, an overheating problem can arise in the summer season and temperatures in the cold room can reach 17 degrees C. Results also show that in both climates we are confronted with the problem of freezing because the cold room temperatures can be less than 0 degrees C and reach - 15 degrees C in the winter.