| With the improvement of the standard of living, air-conditioner has been more and more popularized. At the same time, mechanical compression refrigerators consume a big quantity of electric power and indirectly make the pollution problem more severe, which bring forward great challenge to the human's sustainable development Among the various solutions the utilization of solar energy and other regenerative energy for refrigeration is one of the promising choices. The solar ejector refrigerant system, at the same time when it makes full use of solar energy, because of its simple structure and stable, reliable operation, has gained much attention.In this paper, first the thermodynamic analysis of refrigeration system has been carried out to get the universal order and the key operation parameters influencing the performance of refrigerant system. The dynamics analysis of refrigeration system is used to describe the coupling relationship among refrigerant system parameters and provide the parts signal diagram and system coupling diagram. On the basis of the analysis, we have simulated the solar ejector refrigeration system. Due to system simulation's request, the steady-state simulation is used for the system. In the view of the different duty of parts in the solar ejector refrigeration system, we have set up distributed model or centralized model for different parts. In the aspect of simulation arithmetic, some practical plans of refrigeration system simulation are used to promptly and accurately make arithmetic convergence.A simulation model is set up to study the performance characteristics of ejector refrigeration system varying with the solar radiation. The simulation result show the low system COP at 69.1C of generation temperature but almost double system COP at 78.7C of generation temperature. It also studies the influence relationship between system performance and operation parameters including generation temperature, the air temperature of evaporator and so on. |
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