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This contribution deals with the theoretical study in dynamic mode of an absorption refrigerator endoreversible model. The system is a cold generating station driven by solar energy. The main elements of the cycle are a refrigerated space, an absorption refrigerator and a solar collector form. A simplified mathematical model, which combines fundamental and empirical correlations, and principles of classical thermodynamics and heat transfer, is developed. The proposed endoreversible model is then utilized to simulate numerically the system transient and steady state response under different operating and design conditions. In order to obtain a fixed temperature in the cold room in a minimal lapse of time, the determination of the command necessary heat flow is based on the energy balances. Compared to the collector efficiency, the collector temperature presents major influence on the conceptual and functional characteristics.