Comparisons of various experimental results on the convective heat transfer coefficient of urban surfaces

A comparative study on experimental results obtained on the convective heat transfer coefficients on urban surfaces are discussed. Convective heat transfer coefficient (CHTC) was considered to express the turbulent heat exchange between the atmosphere and urban surfaces. A detailed study on relationship between CHTC of vertical wall of buildings and wind speeds, and CHTC for horizontal building roofs and wind speeds, was also presented. It was observed that position of walls has relatively large influence on CHTC.