The effect of eco-roof in reducing energy consumption: case study of building in Taiwan

• Main Authors: Irma Wahyuni, 吳怡柔
• Other Authors: 黃榮堯
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/v8537d

碩士 === 國立中央大學 === 營建管理研究所 === 102 === Eco-roof is green construction structure consisting of medium soil and plants on top of a building. This research is motivated by the fact that forests and agricultural lands are replaced with impervious surfaces due to urban development in Taiwan, the countermeasures of the green-act should be done soon in order to preserve the health of the environment. Eco-roof technology is one of the appropriate response to cope with this issue. Establishing plant material on rooftops provide numerous ecological and economic benefits including mitigate urban heat island effect, control storm water run-off, reduce sound reflection and transmission, and lower heating and cooling costs, as well as sustain local wildlife. The main objective of this research is to model the influence of eco-roof retrofitting in term of annual energy reduction for a whole building in Taiwan through case study. The method use in this thesis involve whole building simulation model for residential and institutional building. Different type of eco-roof, soil thickness and distinct section assignment of the plant on the roof are parameters used for this research. Results show that different thickness do not directly affect annual energy consumption in the building but more likely has an indirect effect to energy reduction in relation to plants’ selection, in the other word, the larger types of plants the ticker soil need to be applied. Intensive type with the thinner soil layer gives better insulation compare to extensive and even for bare roof. Plants selection and eco-roof coverage design are the biggest factors to lower energy consumption, in this study cases for 5-storey institutional building could reduce energy as much as 24-36% and for 11-storey residential building decrease energy demand around 6-11%.