Abstract
In the previous paper, the authors reported on a simplified model for predicting a vertical temperature distribution in a large space. This paper presents a mathematical model for the unsteady state heat analysis of a large space, which includes the prediction of vertical air temperature distribution. Calculated results are compared to experimental results. The investigation described within this paper reveals that ; -this model has a practically enough prediction accuracy in both case of heating/cooling and natural convection conditions. -concering heat flow to and from wall surface, it is important to calculate conductive heat transfer and radiative heat transfer seperately.