抄録
Although the analysis of insolation heat transfer through a window with a blind shows that the convective heattransfer component accounts for a large proportion, many aspects of this heat-transfer mechanism remain unknown. Accordingly, it is very important that the amount of heat transferred by convection should be accurately known. Having been studying about windows from the standpoint of architectural environment planning, the author proposed a mathematical thermal (or insolation-heat-transfer) model and proved its validity as a part of the study. In that model, the convective heat-transfer coefficient α_<sC>[W/(m^2 K)] of slats on a blind was important. For instance, assuming the convective heat-transfer coefficient α_<gC>[W/(m^2 K)] of the inside surface of the window glass is 4.6 W/(m^2 K) and α_<sC>=10, when differences between the measured values and calculated values of the convective heat-transfer amount and slat temperatures were small, then measurements in which the room temperature was kept equal to the outside air temperature had values that nearly agreed1 with calculations. This paper reports on values of α_<gC> and α_<sC>, that best reproduce measured values of convective heat transfer through a sunlit window. We compared to data from 34 experiments that assumed a cooled or a heated room, and also to data in the previous study.
