Applying Appropriate Passive Cooling Strategies to the Office Building to Improve Building Energy Efficiency The Case is Existed Office Building in Dubai
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Date
2024-06
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Publisher
The British University in Dubai (BUiD)
Abstract
In response to the hot local climate in Dubai, the study suggests passive cooling strategies to reduce building energy consumption and maximize the indoor comfort level for building users in office buildings in Dubai. It begins to try to find ways to enhance or increase the natural air velocity and decrease indoor temperature in interior spaces by contributing some parameters to building design and enhancing building specifications without using electricity. In addition, this research aims to modify building design by applying passive cooling strategies to a building model and using computational building software “IES” to compare and find the optimum building design in terms of building efficiency.
The study selected an office building, and multi-passive cooling strategies were applied to the energy simulation software IES to test and evaluate the building's energy savings and consumption. The study re-modelled the building in five design phases to apply passive cooling techniques and test it individually. Firstly, finding optimal building orientation, then the window enhancement phase, applying shading devices and external wall insulation, and finally, phase five, applying a green roof.
As a result, the building achieved 35% at the optimal developed model in terms of energy savings during the summer season, while the spring scenario saved about 26% and in the winter about 25%. On the other side, the indoor thermal comfort and indoor temperature indicated in this study help understand how the applied passive cooling strategies impact building behavior.
Description
This study is to present passive building cooling design strategies by combining different physical solutions. To mention some: exterior façade design, window opening, air redirection, green roofing, and building insulation. However, using natural ventilation or other practices instead of an AC system for office buildings in the hot climate of Dubai in the winter can play an important role in saving building energy when the weather conditions are acceptable. Thus, using natural resources in addition to architectural building enhancements is important to reduce energy consumption.
Keywords
sustainable, passive cooling, Dubai, office building, building orientation, shading device, green roof, window size and shape, energy saving, IES simulation