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一、引言 测量瞬时表面热流率的传热器按工作原理可以分为两大类:表面温度计类及量热计类。前者是利用表面温度计测出半无限体的表面温度随时间变化的历史,然后按热传导理论计算表面热流率。后者是利用量热元件吸收传人其中的热量,测量量热元件的平均温度变化率再计算表面热流率。
First, the introduction Measuring the instantaneous surface heat flow rate of the heat exchanger according to the working principle can be divided into two categories: surface thermometer class and calorimeter. The former is the use of surface thermometer to measure the semi-infinite body surface temperature over time history, and then calculate the surface heat flow rate by heat conduction theory. The latter is the use of calorimetric elements to absorb the heat transmitted to measure the average temperature change rate of thermal elements and then calculate the surface heat flow rate.