
By estimating the efficiency of the ideal piston now regenerative heat exchanger with the theory of dispersion model of temperature nat of the solid, the relations between the efficiency and the switch time of regenerator were presented, and a conclusion was raised that the efficiency of the ideal piston flow regenerative beat exchanger can be approached the limit value when the switch time is less than a constant. An available reference is put forward for the selecting of the switch time and the further researching... By estimating the efficiency of the ideal piston now regenerative heat exchanger with the theory of dispersion model of temperature nat of the solid, the relations between the efficiency and the switch time of regenerator were presented, and a conclusion was raised that the efficiency of the ideal piston flow regenerative beat exchanger can be approached the limit value when the switch time is less than a constant. An available reference is put forward for the selecting of the switch time and the further researching on the thermal characteristics of the regenerative heat exchangers. 利用畜热器内温度固体前沿扩展模型，通过对理想活塞流蓄热式热交换器换热效率的评价．得出在蓄热器结构一定时，热交换效率与换向时间的相互关系．提出当换向时间小于某一值时，热交换器的换热效率可达极限效率．为蓄热式热交换器换向时间的选取和换热特性的进一步研究提供了一定的参考依据． The switch time and the matter flow rate pass through the section area of the exchanger were approved to be the important facts influencing the efficiency of the regenerative heat exchanger of packed bed by the experiment,and the mathematical expression of the efficiency of the heat exchanger was proved to be more accurate in describing the relationship between the efficiency and the switch time of the heat exchanger.Thus,an important theoretic approach was put forward,for the further investigation regarding... The switch time and the matter flow rate pass through the section area of the exchanger were approved to be the important facts influencing the efficiency of the regenerative heat exchanger of packed bed by the experiment,and the mathematical expression of the efficiency of the heat exchanger was proved to be more accurate in describing the relationship between the efficiency and the switch time of the heat exchanger.Thus,an important theoretic approach was put forward,for the further investigation regarding the performance of regenerative heat exchanger,as well as for the design of regenerative heat exchanger.\= 依据蓄热式热交换器的换热实验，证实了在结构一定时，换向时间和流经热交换器截面的流量，是影响蓄热式热交换器换热效率的两个重要因素；研究得出的热交换器效率的计算式可较精确地描述效率和换向时间之间的定量关系。为蓄热式热交换器的进一步理论研究、设计和操作提供了重要的参考依据。 Through the test of regenerative heat exchanger, the writer find out that the selector time and the volume passed through the heat exchanger are two important factors to influence the heat exchanger efficiency. They have found out the qualitative relation between the two factors. The test result can give a reference to the research, design and operation of the regenerative heat exchanger. 依据蓄热式热交换器的换热实验，揭示了在结构一定时，换向时间和通过热交换器截面的流量是影响蓄热式热交换器换热效率的两个重要因素，以及它们之间的定性关系。为蓄热式热交换器的进一步研究、设计和操作提供了重要的参考依据。
