Research on the Influence of Water Body on the Temperature and Relative Humidity of its Surrounding Environment in Winter

Abstract

As a special underlying surface, water body can be used to improve the thermal environment around buildings. In this paper, the artificial lake in an university in Xi’an was taken as a case for analysing the influence of artificial water body on its surrounding environment in winter. ENVI-met simulation was carried out as a key method in the study. The feasibility of such method was verified by comparing the simulation results with the actual measurement results. In the case of changes in solar radiation during the day, overall results of the study show that under the influence of the water body in Xi’an in winter, the temperature of the downwind area of the water body decreases and the relative humidity increases during 10:30am and 4:30pm, the temperature of such area increases and the relative humidity decreases during 5pm and 9am in the next day. Such effects persist as the distance to the water body is larger. The study also shows that, ENVI-met simulate on the impact of water bodies on its surrounding environment could be validated on daytime; however, the results on nighttime could not fully validated.