测量热流有几种方法,对于基本稳定的较小热流大多数是用温度梯度型的热流计测量。基于稳态导热的付立叶定律,当热流垂直通过热流测头时,就会在测头上产生一定的温度梯度,用装在测头内的热电堆测出热阻层上的温度,即可确定温度梯度,然后再根据测头传热性能得到热流密 There are several ways to measure the heat flow, and for the most stable, smaller heat flow, most are measured with a temperature-gradient heat flow meter. Based on the Fourier rule of steady-state heat conduction, when the heat flow passes vertically through the heat flow probe, a certain temperature gradient is generated on the probe, and the temperature on the heat resistance layer is measured by the thermopile installed in the probe, that is, The temperature gradient can be determined and then the heat flux can be obtained based on the heat transfer performance of the probe