屋外生活空間における空間形態や構成材料の違いを考慮した放射環境の数値解析

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The object of this paper was to calculate a distribution of Mean Radiant Temperature taking solar radiation into account (MRT) in urban living space and to examine the thermal influence of urban/building design on MRT distribution. The calculation method was developed which allow predicting an MRT considering thermal influence of urban/building design to reproduce spatial forms and materials of building and ground. And the MRT was calculated considerng radiance distribution of sky radiation and atmospheric radiation, and multi-reflected solar radiation. Considering sky radiance distribution, MRT distribution in medium-rise building block was calculated more precisely. As a result of calculation of MRT in actual urban block, reflected solar radiation and long wave radiation from pavement formed complex MRT distribution. Then MRT distribution was computed on condition that the pavement (solar reflectance 0.1) was change into cool pavement (solar reflectance 0.6) in actural urban area. The radiation field in cool pavement because worse because the increased budget of solar radiation for cool pavement was twice than the decreased budget of long wave radiation.
2008-08-30