Outdoor Thermal Environment of High-rise Residential Area

We conduct field tests on residential areas in Xi'an, such as construction dooryard, tree, water and square. Second, we conducted a questionnaire survey on residents' outdoor thermal comfort and collected residents' subjective thermal responses. The results of the study showed that during the daytime, the trees had a good cooling effect, and their cooling capacity could reach 6.53 degrees C (referenced to measurements close to pine trees). During the night hours, water bodies, square and construction dooryard all had good cooling effect. Their cooling capacities were 8.47 degrees C, 5.31 degrees C and 5.9 degrees C respectively based on measurements close to pine trees. This shows that the ability of cooling by small areas of water, building overhead layer and building patios, which is more effective at night. It shows that reasonable building layout could improve the wind environment, small areas of water contribute little to improve air humidity, and customs can affect people's thermal adaptability.