中文摘要：

本文基于不同真空压力下槽式真空吸热管环形夹层内的四种不同传热机理,建立了真空夹层内稀薄气体的传热模型,并验证了模型及计算方法的准确性。计算了氢气穿透、漏入空气、玻璃管破裂三种情况下真空吸热管的热损值及玻璃管外壁面温度。分析了吸热管真空夹层内漏入不同气体对吸入管热损值及玻璃管外壁面温度的影响规律。结果表明氢气穿透对吸热管的性能影响最大,空气渗入次之。真空失效将显著的降低集热系统的光热转换效率。

英文摘要：

Heat transfer models of rarefied gas inside the vacuum annulus were also established in this paper based on four different heat transfer mechanisms with various vacuum pressures and were proved correct.Heat loss and glass envelope temperature of receiver tubes were obtained under the conditions of hydrogen penetration,air leak,glass breakage;heat transfer characteristics of rarefied gas inside the vacuum annulus were analyzed over different gas types,various vacuum pressures and ambient conditions.Analysis of the heat tube vacuum interlayer of leakage into the different gases on the suction pipe heat loss value and the influence law of glass tube wall temperature.The results show that hydrogen penetration is the greatest influence on the performance of the heat pipe,Air leak comes second,The vacuum failure will significantly reduce heating system and heat conversion efficiency.