Center for the Built Environment

This paper provides projected area factor for each part of the human body to allow the radiative heat transfer between the human and surrounding surfaces to be calculated. We first describe ways of calculating angle factors, effective radiation area, radiative heat transfer coefficients, and the mean radiant temperature for each segment of the human body. Then we describe an approach to measuring projected area factors using a manikin. Projected area factor distributions and other important elements for radiation analysis are presented and compared with other studies.