Title: Impact of building thermal characteristics on urban climates in Dalian, China

Authors: Wenqian Zhou; Xiangli Li; Lin Duanmu; Yang Li

Addresses: Institute of Building Environment and Facility Engineering, Dalian University of Technology, Dalian 116024, China ' Institute of Building Environment and Facility Engineering, Dalian University of Technology, Dalian 116024, China ' Institute of Building Environment and Facility Engineering, Dalian University of Technology, Dalian 116024, China ' Institute of Building Environment and Facility Engineering, Dalian University of Technology, Dalian 116024, China

Abstract: The impact of building thermal parameters and building energy-saving technologies on the urban climate was presented in this study. In Dalian, this work used correlation analysis to find a strong linear relationship between building thermal parameters and outdoor temperature. The intermediate parameter should be the building energy consumption, directly affecting the ambient climate. Simulation results showed that the air temperature rose by 0.88 K-1.85 K when air conditioners were on. In addition, the changes in the urban thermal and humid environment with the development of building energy-saving technologies were discussed. High albedo/green roofs were shown to be effective countermeasures to mitigate the urban heat island effect by about 1.0 K. Considering the geographical and meteorological characteristics of coastal areas, different green roof designs are recommended for urban areas. This work can provide some scientific guidance for urban energy-saving planning in coastal areas.

Keywords: WRF; land use type; building thermal performance; building energy-saving technology; urban microclimate; China.

DOI: 10.1504/IJGW.2023.131407

International Journal of Global Warming, 2023 Vol.30 No.3, pp.309 - 333

Received: 17 Jun 2022
Accepted: 21 Dec 2022
Published online: 09 Jun 2023 *

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