Contribution of Green Roof in Urban Energy Saving Project

In this paper, through the simulation of whether the roof greening is arranged on the top of buildings when different weather events occur in summer, it is found that roof greening can produce a local cooling effect of 0.8 ℃–1.5 ℃ and an overall cooling effect of 0.6 ℃–1.3 ℃ in summer, which has a good positive impact on urban energy supply and stability. Through energy consumption simulation, it is found that the arrangement of green roof can produce 3 W/m2/h cooling effect on the room, and the entire cooling season can reduce the simulated building energy consumption of 21772.8 KWH. It provides relevant data for the restoration of urban ecological environment and the follow-up study of urban energy conservation.