Discussion on application of mean radiant temperature

Presents the definition of mean radiant temperature and its relationship with surface temperature, and compares the accuracy of calculation results by experiment with three methods including indirect measurement method with black globe thermometer, area weighted method and definition method. The results show that the area weighted method which is simplified from the definition method is rough during application, and the three hypothesizes must be paid attention to. Although the indirect measurement method with black globe thermometer is simple and widely applied, but the error is larger, and it’s not effective in the condition that the radiant temperature field is non-uniform or transient, because many measurement errors will be introduced during test.