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| Introduce a method for calculating surface heat storage coefficient of wall, and make a calculation on outside surface heat storage coefficient of several common walls with light-weight external thermal insulation materials and the traditional solid clay brick wall. In order to study the impact of using light-weight external thermal insulation materials on the surface temperature of external wall, carry out a contrasting experiment between an external insulation room and an uninsulated room in August, 2010, in Chongqing, China. Calculated result shows that outside surface heat storage coefficient of the insulated wall is much less than that of the traditional wall, the outside surface heat storage capability of the insulated walls is poor, and the surface temperature has great fluctuation. Experimental result shows that, during sunny time, surface temperature of external walls of the insulated room is obviously higher than that of the uninsulated one. In different orientations, due to different amount of solar radiation and being irradiated in different time, the contrasting temperature difference (CTD) appears different varied regularity. In a word, using light-weight external thermal insulation materials is bad for building surrounding thermal environment and has a negative impact on people's health. Finally, some suggestions on how to eliminate the impact, such as improving the surface condition of the building envelop, plating vertical greening etc, are put forward. |
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| Keywords:Surface heat storage coefficient; External thermal insulation; Building surrounding thermal environment |
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