Improvement of Urban Climate

  Graphic: City view with buildings and vehicles Copyright: © ISAC

The high degree of surface sealing in urban areas is also becoming a problem in view of increasing global warming: heat accumulates between buildings and sealed surfaces, so that temperatures only drop slowly even after sunset.

Infiltrative pavements have a lower density and lower heat storage capacity than dense pavements. The water stored in the layers of infiltrative traffic surfaces can partially evaporate on hot days. The evaporative cooling further improves the urban climate. Both effects contribute to avoiding heat island effects in urban areas.

Another approach is to use and store thermal energy from the street structure. Heat energy accumulated in summer can be dissipated from the pavement and stored for later use in winter. Cooling the surface layer can thus also reduce overheating of urban areas through the so-called heat-island effect.

 

Sample Projects

Environmentally Friendly Road Cover with photocatalytic removal of nitrogen dioxide and a reduced heat sinking effect