Green building construction to enhance the rooftop thermal insulation--double-roof flow channel incorporating RBS

• Main Authors: Jui-i Chen, 陳瑞益
• Other Authors: Chi-ming Lai
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/22995990699862134825

碩士 === 立德管理學院 === 資源環境研究所 === 94 === ABSTRACT The geographic location of Taiwan is somewhere near Tropic of Cancer. Therefore, the roof of most buildings located in Taiwan can be exposed to a direct (overhead) sun-ray during the summer season. In fact, the yearly cooling load that received from the roof is estimated to be 2.78 times that gained from south-side wall (the second highest in terms of solar heat-gain). This research was designed to build a heat-insulated “double roof” which is adaptable to domestic construction procedure. It is found that the prototype with 10cm-wide channel leads to lower U value on different levels. However, the original one cannot meet the standard of statutory heat-insulation while being applied on common slang roof structure. It is also found that the need of building codes will be satisfied by interior RBS-hanging on the original prototype inclined by 30 degrees with 5cm channel interval. And the U value of RBS-pasting onto RC approaches legal requirement. U values of both of the above construction procedures will meet statutory standard when the channel width is 10cm as recommended. It is proved that the double deck slang roof with RBS contains excellent heat-insulation capability which can be utilized to decrease conductive heat and convection heat encroached through roof