This paper presents a mathematical simulation for the dynamic thermal behavior of a solar ejector-compression refrigeration system with a capacity production of 100 kg of ice per day. It consists of an evacuated tube solar collector array, a thermal storage unit and an ejector-compression refrigeration unit. Due to the change in climate, the collector efficiency varies and, therefore, so does the system efficiency. This fact makes it necessary to evaluate the design of the system not just for a whole day but also for a whole year. The ejector-compression refrigeration system was designed to work with Freon R142b as the working fluid at condenser temperature (Tc) of 30°C, generation temperature (TG) of 105°C, evaporator temperature (TE) of −10°C, with a required generator heat load (QG) of 5.6 kW and an obtained evaporator heat load (QE) of 2 kW, the corresponding COP was 34%. With these conditions, the ejector geometry was fixed and curves for QG, QE and COP as a function of TC and TG were obtained. A plot of the daily history of system storage tank temperature for two days of the year (one in January and one in June) is presented. Also graphs for the monthly average ice production, COP, collectors and system efficiencies are presented. The annual average values for COP, collector efficiency and system efficiency were 0.21, 0.52 and 0.11, respectively.