分析了高温熔融盐作为传热流体的单罐斜温层填充床式蓄热器的性能．建立了斜温层单罐蓄热系统的理论模型，并通过数值模拟计算揭示了其蓄热规律．根据系统蓄热量、蓄热能力、熵产和蓄热有效性等确定了评价蓄热器性能的方法，并分析了不同填充材料的物性对斜温层单罐蓄热系统性能的影响．结果显示，在一定的蓄热条件下，较大的导热系数不利于提高蓄热器的蓄热性能，单位体积热容较大时综合蓄热性能较好，但其系统熵增也较大．

In this paper,the performance of a single thermocline packed bed storage tank is analyzed,with hightemperature molten salt as the heat transfer fluid. Then,a theoretical model of the thermal storage system is established to reveal the law of thermal storage by means of numerical simulation. Moreover,the method to evaluate the performance of the thermal storage tank is put forward based on the capacity,the ability,the entropy generation,and the effectiveness,etc,and the effects of physical properties of different filler materials on the performance of the thermal storage system are analyzed. The results show that,under certain conditions of thermal storage,higher thermal conductivity are unfavourable to enhance the performance of the thermal storage tank,and that higher heat capacity per unit volume may result in better comprehensive thermal storage performance as well as high entropy generation.