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).


Green Roof

Location: Staircase roof

Besides shielding from direct sunlight, green roofs can act as storm water retention and creates a cooler microclimate as the plants can absorb large quantities of solar energy. Irrigation processes through capillary phenomenon or from the top surface of the soil are both possible.

Different plant types are being studied. It also fulfills the aesthetic purpose to create more greenery in an urban jungle setting.


Green Wall

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:

  1. Panel type
  2. Mini planter box
  3. Cage system.


Panel Type   Mini Planter Box   Cage System

Temperature sensors are placed on the surface behind the vertical greenery, on the external façade and under the plants.

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With funding support from: In partnership with: