堆用热管的热特性计算分析

热管已广泛地用于许多领域。为把热管技术用于材料试验堆内的辐照罐温度控制,近年来日本原子力研究所 JMTR 堆上的研究人员对热管作了大量的研究工作,并进行了堆外热特性试验和部分堆内试验。作者在 JMTR 堆上工作期间,主要对几种堆用垂直重力协助式热管的热特性进行了计算分析。研究结果表明,轴向槽道式热管和无吸液热管不仅结构简单,而且具有良好的热特性,可工作在500K 左右的温度范围内,适用于考验压水堆材料的辐照罐。均匀吸液芯热管在较高温度下沸腾极限较低,因此更适合于较低温度下的使用。本文简介热管在辐照技术上的应用并讨论几种堆用重力热管的传热极限。

Calculation Analysis of Thermal Characteristics for Heat Pipe

Heat pipes were used in various fields for many years.Recentyears the scientists working on the JMTR reactor in Japan studythermal performances of heat pipes and carrying out some exper-iments in order to use them for temperature control of irradiat-ion capsules in the core.The author calculates and analyzes thethermal characteristics of several vertical gravity-assist heat pipes during working on the JMTR.This paper briefly introduces heat pipe application in irradia-tion capsules,and presents the calculated results of heat transf-er limits of wickless heat pipes,grooved heat pipes and homoge-neous heat pipes.