1997 Volume 1 Issue 1 Pages 57-63
It is widely known that radiant temperature influences man’s thermal sensation together with air temperature, humidity, air movement and other human factors.The present study deals with a mean radiant temperature and a radiative heat transfer coefficient, which were derived by the present authors, having extended Gebhart’s absorption factor method on the radiation heat exchange. The newly derived mean radiant temperature and the radiative heat transfer coefficient have the following characteristics, that is, the former is weighted with the absorption factor between the human body and each surrounding wall, while the latter is defined by the product of three elements; -Stefan-Boltzmann’s constant, the temperature factor which relates to the third power of the absolute temperature, and the emissivity of the human surface, and not including the emissivities of the surrounding walls.
