TY - JOUR
TI - Simulation analysis and design optimization of campus outdoor thermal environment under compound energy supply system
AU - Zhang Zhiying
AU - Mei Yuqian
AU - Xu Yuequn
AU - Feng Jing
AU - Zhang Yifan
JN - Thermal Science
PY - 2023
VL - 27
IS - 2
SP - 1117
EP - 1124
PT - Article
AB - In order to solve the problem of quantitative analysis of the impact of  greening facilities on outdoor near-ground temperature, the author proposed  the simulation analysis and design optimization of campus outdoor thermal  environment under the compound energy supply system. On the basis of UAV  aerial survey data, ENVI-met was used to establish two schemes of actual and  non-vegetation in the study area, and the thermal environment was simulated  and compared. The experimental results show that: UAV tilt photography can  quickly obtain orthophoto images and high precision 3-D information of the  research area, and ENVI-met modelling is more flexible and cheaper. The  correlation coefficient between the results and the measured results is  >0.9, and the root mean square error is 0.6ºC, the simulation results can  reflect the distribution of temperature in the study area well. Vegetation  and turf had obvious cooling effect, the area of high temperature area (>36  ºC) in the study area without vegetation increased by 34%, the area of  predicted mean vote (PMV > 4.5), which is an evaluation index of human  thermal response (cold and heat sensation), increased by 17%. In the  vertical direction, the cooling effect of vegetation on the ground can be  extended to 15 m. In conclusion vegetation and greenery can reduce the  temperature near the ground through transpiration, effectively improve the  urban thermal environ­ment, and improve human comfort.