Dairy and milk are an important sub-sector in the national economies of many developingrncountries, providing food, regular incomes for households and sustainable livelihoods for ruralrnfarmers and small and microenterprises. Milk constitutes an important part of a balanced andrnhealthy diet with its excellent nutritional properties. When we use milk direct for nutrition purposernit would affect human health, Refrigeration is crucial important to cool milk. Refrigeration and airrnconditioning consumes about 15% of world energy today, solar energy is one of the most efficient,rnclean and affordable energy alternatives available now a days and current concerns about globalrnwarming and ever-increasing energy rates. Absorption refrigeration system needs a low runningrncost on cheap fuel such as solar energy, biomass and waste heat while vapour compressionrnrefrigeration system need high cost due to electricity as energy input. Absorption refrigeration hasrnbeen most frequently adopted for solar refrigeration and reducing the emission of greenhouserngases. To remove harmful bacteria that would affect human health, some processing is required.rnIn rural area where electric grid is unavailable some of milk is wasted as bulky when they userntraditional ways and they wouldnâ€™t pasteurize milk. To overcome such a problem pasteurizing andrnrefrigeration of milk using solar energy is the important things. Solar absorption refrigerationrnsystem has the potential to improve the life quality for people who lives in remote areas or areasrnwith insufficient electricity, with the objective of modeling small scale solar absorptionrnRefrigeration system for dairying process for pastoralists of Afar region with capacity of 500 liters.rnThe modeling of solar absorption refrigeration system used in dairying process is done, by using rnmathematical model and dynamic modeling of the system, using MATLAB software. Therncoefficient performance of the solar absorption refrigeration system varies from 0.45 to 0.94andrnmilk temperature is cooled from 32rnc using MATLAB simulation. the data used forrnmodeling is gained from Chuye milk and milk processing, A two electromechanical companiesrnand National metrology agency. The life cycle cost of solar absorption refrigeration system isrncalculated, the life cycle cost of solar absorption refrigeration is much less than that of vapourrncompression refrigeration system used in chuye milk and milk processing company. The projectrnis economical feasible.