Energy efficiency remains to be the core of green building. The 4 components of energy efficiency can be segmented into performing insulation solution, equipment, ventilation as well as renewable resources.
Performing Insulation Solution
High performance building insulation materials are used to create a barrier against heat gain in order to provide occupants with thermal comfort.
With the installation of energy saving savings, the EWURA office experiences 35% reduction of energy consumption over conventional buildings.
The bridge connecting the two wings of the EWURA office as well as the corridors are naturally ventilated. Air conditioning is kept at a minimal with only 7523 sq. m out of 25, 625 sq. m of the gross floor area air-conditioned. Air-conditioners used are also highly efficient to keep energy consumption low.
Making use of valuable resources that are free, rainwater captured and infiltrated are able to fully irrigate plants on site. The conceptualization of harvesting rainwater will diminish storm water run off into water bodies as well as reduce flood and soil erosion. This system is easily maintained and reduces dependency on national water sources.
Bioclimatic architecture and design
With a tropical climate, a building in Tanzania should maximize its north and south façade in order to optimize day lighting and at the same time reduce the need for cooling. Sun paths will help you understand how the sun interacts with the building during different times of the day and this will help mitigate over-heating. High quality glass with high shading co-efficiency for the façade of the EWURA building will provide ample amount of day lighting to be captured and at the same time, sieve out excess sunlight that causes uncomfortable glare.
Water Conservation and Protection
Water fittings in the EWURA office are certified the maximum of 3 ticks under the Water Efficiency Labelling Scheme (WELS) administered by the Public and Utilities Board (PUB) of Singapore. The chart below explains the amount of water used in the EWURA office over conventional buildings.