earticle

영어

This study aims to identify the indoor temperature reduction effect through new green roof system using blocks made of bottom ash to meet the low-energy environmentally-friendly building concept. And the results are presented as follows: First, when wild flowers and plants are planted instead of Crassulaceae and Nertera granadensis on the roof, their rootage and growth are completed within a short period, which is 1/3 of the period of rootage of existing plants (more than 6months), and have good propagation power so they are recommended as new plants for the roof. Second, thickness of molding for rootage is within 20cm for low-management and lightweight roof tree-planting system but we made planting blocks with less than 10cm thick to reduce load imposed on the rooftop and its possibility was verified. Its drainage power was outstanding with no chocking of rain water and no case that roots of plants are corroded without a drainage or barrier has not been observed. Third, as there was 2℃ of differences (similar with existing green roof system) in indoor temperatures in comparison with that of the place where the roof planting system was not installed, it is suggested that it is very effective in reducing heating and cooling expenses. Fourth, the total construction cost can be saved through saving feasibilities of the existing roof tree-planting system and green space given in urban areas can preserve our ecological environment and control thermal island effect in terms of thermal efficiency across every season Therefore, this study suggests this effective green roof system that is easily available.