ZEMCH 2015 - International Conference Proceedings | Page 652

Figure 27 illustrates the hourly gains in the same zone according the current condition of the
metro zone selected. By changing the material of the building envelope and using a material with
lower U-value results changed and the amount of cooling loads required for the building are less
than before as well as hourly gains as shown in Figure 28 and 29.

Figure 28: Monthly Heating/Cooling Loads- Saturday 1st September – After (Autodesk 2011)

Figure 29: Hourly Gains- Saturday 1st September – After (Autodesk 2011)
The monthly heating and cooling calculations reference to Figure 26, it shows that the existing
building envelope materials requires 28936 (Wh) to cool the building and after proposing a lower
U-value envelope design the calculations show that 27906 (Wh) is required to cool the building,
which means a saving of 1030 (Wh). Same was demonstrated for hourly gains calculations reference to Figure 27 and after proposing building envelope with lower U-value.

Conclusion
Although metro have a great influence in enhancing the urban fabric of the city, it generated
some environmental and physical problems to the metro station and the surroundings. Aiming
to achieve a better sustainable city and to provide comfort zone and environment for the society
some design problems can be solved my learning from nature and adapting the concept of biomimicry. Learning from the Nightjar bird that have the ability to live in hot dry climate and can
stand its environment, several natural concepts and strategies was inspired and implemented
on the metro design to improve its performance toward the building itself and its effect on the
surrounding.
From applying the concept of evaporative cooling and reducing noise caused by vibration by
creating a unique structure inspired by the feathers to controlling amount of day light through

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ZEMCH 2015 | International Conference | Bari - Lecce, Italy