对常温直热管传热系统的总热阻进行了试验研究，着重分析了真空和大气环境下该系统裸接并用不同的螺钉扭矩安装时热管的总热阻及热管与热端安装面、冷端安装面的热阻。研究表明，试验环境对该系统的传热能力有一定的影响，热端和冷端安装面在真空中的热阻均比在大气环境中的大。螺钉的安装扭矩会影响接触面的热阻。两种环境中，在一定的热负荷下，冷端安装面在扭矩为0.4 Nm时的热阻约是扭矩为1.2 Nm时的2.4倍。

The total thermal resistance of a straight heat pipe heat transfer system at room temperature is studied experimentally. The total thermal resistance of the heap pipe and the resistances of heat pipe and heat-end and cold-end mounting surfaces when the system is installed with different torques are analyzed mainly. The research result shows that test environment has a certain influence on the heat transfer capability of the system. The thermal resistances of the heat-end and cold-endmounting surfaces are greater in vacuum than those in atmosphere. The mounting torque of the screw used may affect the thermal resistances of contact surfaces. In both environments, the thermal resistance of the cold-end mounting surface with a torque of0.4 Nm is about 2.4 times greater than that of it with a torque of 1.2 Nm under a certain heat load.