PRACTICAL STUDY ON THE REDUCTION EFFECT OF THE HEAT ABSORPTION OF THE BUILDING BY THE ROOF TOP PLANTINGS

Abstract

The surface temperature measurement and the soil temperature measurement and the heat flux measurement were done in order to be quantified the effect of the heat absorption of the building by the roof top plantings. The strong correlation was observed between the differences of temperature of a slab vertical side and the heat flux. When the heat flux for four years were averaged about the period in July and August of a summer, at the vegetation section, the heat flux decreased by 7.3% of that at the non-vegetation section at the upward maximum. When the heat flux for four years were averaged about the period in January and February of a winter, at the vegetation section, the heat flux decreased by 59.0% of that at the non-vegetation section at the downward maximum.