Open AccessNumerical simulation on the outdoor thermal comfort in view of urban renewal: A case study of Changsha, China
Author(s) -
Yaping Chen,
Bohong Zheng,
Fangzhou Tian
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/349/1/012030
Subject(s) - microclimate , thermal comfort , environmental science , china , wind speed , thermal sensation , thermal , daytime , meteorology , equivalent temperature , factory (object oriented programming) , floor area ratio , architectural engineering , environmental engineering , civil engineering , geography , atmospheric sciences , computer science , engineering , archaeology , geology , programming language
Urban Renewal plays an important role in urban economic development and urban construction in China. A large number of cities are currently developing towards high-rise and high-density models which will affect microclimate. Firstly, it analysed the impact on urban wind and thermal environment during the removal and reconstruction of residential buildings using ENVI-met. Secondly, the correlation between wind and the thermal environment with building arrangement, building density, building height and green ratio in 7 ideal cases were studied. Thirdly, the Physiologically Equivalent Temperature (PET) index was simulated by RayMan to assess thermal sensation. Finally, a case study of Changsha was simulated, where a factory was reconstructed to residential buildings. The results showed that 1) The redeveloped site will affect the neighbour outdoor thermal comfort within the range of 100m, and the impact will be insignificant beyond 100m. 2) During the daytime, higher building height and building density can result in 0.05°C-0.13°C lower PET value. 3) Green space is more effective than the residential area in cooling at night during the summer.