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通过理论和实验相结合的方法，提出了一个适用于悬挂式气敏传感器的热功耗Ｐｈ与工作温度Ｔ０和环境温度Ｔｒ的关系式，并用理论公式和实验数值相结合的方法给出了自然对流换热系数为７～８Ｗ·ｍ２Ｋ－１的结果．
Through the combination of theory and experiment, this paper presents a relation between the thermal power consumption Ph and the operating temperature T0 and the ambient temperature Tr, which are suitable for the hanging gas sensor. The method of combining the theoretical formula with the experimental data gives the natural Convection heat transfer coefficient of 7 ~ 8W · m2K-1 results.