Design of the box type evaporator in the solar adsorption refrigerator

Abstract

Abstract The evaporator is a device used to separate two phases between liquid-gas and liquid-liquid by using heating media. The model uses aluminum material with dimensions 170 mm x 170 mm x 240 mm and uses 3 mm aluminum thickness and three pieces of aluminum pipe with dimensions of 100 mm. The choice of material used it aims to obtain optimal results from the work of the evaporator. The effect of temperature is significant in the process that occurs in the evaporator will determine the effectiveness of the evaporator so that it can separate the water content in methanol. By heating, until one component evaporates on its boiling route, it can separate it from other parts by using methanol with 90% purity. The results of the design that is made produce an evaporator with a volume of 5 liters. The minimum evaporator temperature obtained during testing occurs in the second cycle of 0.5°C. Several factors affect the performance of an evaporator. The total heat needed in the process of reducing the maximum water temperature to the minimum water temperature and the latent heat required by methanol to evaporate.