Abstract
The purpose of this paper is to show the effectiveness of porous residential buildings in hot and humid regions, from the point of view of reducing cooling load and CO_2 emissions. Two scales of void, namely building scale void and parts scale void are considered. As Shiraishi et al ([1]) shows that building scale void is substantially effective in terms of cooling load reduction, this paper will focus on cooling load reduction caused by the introduction of parts scale void, and CO_2 emission reductions by both building scale and parts scale voids. Additionally, other environmentally friendly techniques are examined. Thermal and airflow network analysis and LCA are used for these simulations. The results are as follows; 1) Porous buildings are effective to reduce C0_2 emissions for space cooling. 2) Long life buildings with 100 years life span are effective to reduce CO_2 emissions. 3) Lifecycle CO_2 emission is reduced by 37% compared with an ordinary case when all of the strategies mentioned in this paper are applied.
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