Greenery helps to reduce heat transmittance into a building through direct shading and evapotranspiration. Evapotranspiration refers to the movement of water to the air (evaporation) and the movement of water within a plant and the subsequent loss of water as vapour through its leaves (transpiration).
Location: Staircase roof
Different plant types are being studied. It also fulfills the aesthetic purpose to create more greenery in an urban jungle setting.
Location: West face, south face
Other than producing oxygen, vertical greenery has the benefit of reducing heat transmittance and lessening the effect of Urban Heat Islands.
The intent of installing vertical greenery is to study the effectiveness of these systems on reducing the heat transfer through building walls into the interior building space and the possible energy savings. The three types of vertical system being tested in ZEB are:
Temperature sensors are placed on the surface behind the vertical greenery, on the external façade and under the plants.