Evaluation of Smart Shading Structures in Mitigating Urban Heat Island in a district of a Hot Arid Climate City (Abu Dhabi).

摘要

Nowadays we observe that the world population is concentrating in the cities converting natural areas into urbanized areas by changing the thermal properties also. As the cities evolve the local climate changes as well. And this change is shown perfectly in the urban heat island (UHI) phenomenon. Indirectly the UHI increases the energy consumption used for the cooling systems inside the buildings. This is translated in additional cost and one step back into the main target of having a sustainable city.udIn this paper, we describe how we can analyze one alternative strategy in hot and arid urban environments (like Abu Dhabi) with the help of Urban Modeling Interface (UMI), EnergyPlus (EP), and Ecotect. The energy simulations are divided in two groups. The first group includes the current energy consumption of the different typologies of buildings placed in an urban district and the results are taking into consideration the surrounding environment. The second group of energy simulation analyses the same districts taking into consideration smart shading devices spread into the different districts according to the shading butterfly provided from Ecotect. By proposing this intervention of the necessary shading in the different districts, there is a possibility to moderate the temperatures inside the buildings and as a result the energy consumption by improving in the same time the outdoor quality.udThe innovation stands in the application of this smart shading structures in this type of city and the measurement tools used for such proposal. Part of the work for the energy simulation is the preparation of different templates for the selected building categories, the weather data for the hot arid climate, the use of the shoebox model and experimenting Part as a new tool that makes this kind of simulation possible. The simulation results will be then compared with the field observation data for the different building typologies taken into consideration. This comparison helps keeping the results near to the real energy consumption conditions.