Effects of wall greening panels planted shrubs on improving the thermal environment

Abstract

The aim of this study was to examine mitigating effect of heat environment by wall greening panels. An enforcement place of a experiment was the wall of a penthouse on the roof floor of a university building located in Aoba Ward, city of Yokohama. Chamaeciyparis pisfera ‘Filifera Aurea’ was planted onto about half the area of the wall (height 3,500 mm×width 3,600 mm). Then thermal sensors were installed in a mesh pattern in order to measure surface temperatures of the planted (length 4 points×side 2 points) and non-planted surfaces (length 4 points×side 1 point) and temperature distribution 10-cm in front of those surfaces of the planted (length 4 points×side 3 points) and non-planted (length 4 points×side 3 points). Transition of 24-hours of temperature distribution measured on Sep. 7, 2009. The results showed that, the surface of the wall greening panel has decreased at 15ºC though the surface of concrete wall recorded 45ºC in daytime. And, a concrete wall in the back of the greening panel has decreased similarly at 15ºC, too. And the cooling effect of 1∼2ºC was admitted the wall greening panels compared with concrete wall the neighborhood temperature.