Analysis of Relationships between Form and Materials of Urban Blocks in Housing Estate and Sensible Heat Flux from the Total Surfaces

摘要

In this study, the relationships between the form and materials of housing blocks and sensible heat flux from the total surfaces was analyzed for the case of ‘Tama New Town’ which is one of the largest housing estates in Japan and whose area is growing.. First, housing blocks were divided into 5 categories from the point of their plot types. The characteristics of the shape and thermal properties of each building, as well as land cover condition (area of vegetation, bare soil, asphalt pavement, and built area) of each category was considered Furthermore, 6 housing blocks were selected for numerical simulation of heat balance of the total surfaces, and sensible heat flux from the total surfaces of each housing block on clear sky day in summer was calculated. It was clarified that the influence of buildings’ directions and floor area ratio was as great as buildings’ materials upon the amount of sensible heat flux in each housing block.