抄録
The purpose of this study is to propose a model to calculate quantity of generated heat from road traffic for heat island analysis. In this paper, we proposed and verified the method of simultaneous estimation of temperature and emissivity of automobile's surface using thermal images. We measured spectrum emissivity using sample tip of automobile's surface materials. When observed at an angle of incidence similar to the one observed by infrared thermography from the building rooftop, long-wavelength radiation from the wall and the window surface of the opposite buildings reflected automobile's surface could not be ignored. Based on these data, we proposed the method of simultaneous estimation of "emissivity and surface temperature of an automobile's body by compensating of reflection of radiant temperature observed by infrared thermography with 8-14μm bands. To evaluate the application of this method, radiant temperature distribution of bonnets, roofs, and glasses of cars were observed by infrared thermography. The results show that surface temperature measured by thermocouple and corrected surface temperature by thermal image almost agreed. So this method is effective for estimation of emissivity and surface temperature of an automobile's body.
