Buildings consume 25% of global water and are responsible for 40% of the total world annual energy consumption. Buildings account for 72% end-use electricity in the U.S. with the largest portion spent for cooling and heating of buildings. The key issues for the future of building industry are related to saving of water and energy consumption, and delivering environmental benefits. The objective of this study is to quantify cooling/heating energy saving and rainwater saving due to vertical gardening in buildings by using controlled experiments and building energy modeling.
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