Research progress on calculation models of heat transfer characteristics of molten salt tower solar absorbers
The technology of concentrating solar power tower plant with molten salt is currently the predominant photothermal power generation technology globally.The performance of the molten salt receiver,which serves as the core device for converting solar energy into heat,directly influences the system's power generation efficiency.Additionally,the safety of the receiver affects the operational hours of the power plant.Consequently,it is crucial to develop a heat transfer model for the molten salt receiver and ascertain its precise heat transfer characteristics.This paper systematically organizes the heat transfer calculation model for the mainstream external cylindrical molten salt receiver,delineating the calculation process and fundamental methods for input radiant energy,radiant heat loss,convective heat loss,and molten salt heat gain within the heat transfer model.Based on the refinement level of the calculation outcomes,the heat transfer model of the receiver is bifurcated into a detailed model and a simplified model.While the detailed model boasts high calculation accuracy,offering a comprehensive representation of the actual energy conversion process,it is computationally expensive and requires extended transient process calculations.Conversely,its specific working condition calculations serve as a verification reference for the simplified model's results.The simplified model entails a judicious simplification of the theoretical model that describes the heat transfer characteristics of the molten salt receiver,facilitating faster calculations while maintaining accuracy.It is predominantly employed during the design phase.By comparing and contrasting the characteristics and performance of these models,technical guidance can be offered for selecting appropriate heat transfer models for thermal performance calculation processes in molten salt receivers.
molten salt tower solar thermal power generation technologyexternal cylindrical heat absorbercomputational modelthermal performance parameters
万方数据
维普
