Comparative study of the influence of traditional walls with different typologies and constructive techniques on the energy performance of the traditional dwellings of the Casbah of Algiers

Abstract Energy efficiency is regarded as one of the important elements of green building. Every Green Building Rating (GBR) system puts forward a set of criteria for energy efficiency and it is different for each system. A comparative study is done to distinguish between two GBR systems practiced worldwide-LEED and BREEAM, first on the criteria for energy efficiency and secondly on how efficient and effective each system in energy performance improvement. Building energy simulation tool, eQuest is used to obtain annual energy consumption of a case study multi-family dwelling residential building for its various design options. Different design cases were formulated by changing design parameters and the simulation results thus obtained are used for evaluating the performance improvement for energy, calculated as per the criteria for each system. This study primarily looks for the combinations which grab total achievable credits in energy efficiency for a particular system. For LEED, it was found that renewable energy allocation alone has the greater influence in achieving higher credits. For BREEAM, there requires specifically a considerable decrease in HVAC load which can be brought by the means of more natural ventilation or by adopting passive cooling techniques. BREEAM was also found more effective in reflecting any kind of improvement made in terms of awarding credits.

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A COMPARATIVE STUDY: DESIGN STRATEGIES FOR ENERGY-EFFICIENCY OF HIGH-RISE OFFICE BUILDINGS

Journal of Green Building ◽

10.3992/jgb.11.1.134.1 ◽

2016 ◽

Vol 11 (1) ◽

pp. 134-158 ◽

Cited By ~ 4

Author(s):

Babak Raji ◽

Martin J. Tenpierik ◽

Andy van den Dobbelsteen

Keyword(s):

Comparative Study ◽

Tall Buildings ◽

Energy Performance ◽

Design Strategies ◽

Design Elements ◽

High Rise ◽

Wide Range ◽

Lighting Energy ◽

Tropical Climates ◽

Building Form

Tall buildings are being designed and built across a wide range of cities. A poorly designed tall building can tremendously increase the building's appetite for energy. Therefore, this paper aims to determine the design strategies that help a high-rise office building to be more energy efficient. For this purpose, a comparative study on twelve case buildings in three climate groups (temperate, sub-tropical & tropical) was performed. The exterior envelope, building form and orientation, service core placement, plan layout, and special design elements like atria and sky gardens were the subject of investigation. effectiveness of different design strategies for reducing the cooling, heating, ventilation and electric lighting energy usage. Finally, lessons from these buildings' were defined for the three climates. Furthermore, a comparison of building energy performance data with international benchmarks confirmed that in temperate and sub-tropical climates sustainable design strategies for high-rise buildings were performing well, as a result leading to lower energy consumption. However, for the tropics the design of high-rise buildings needs additional consideration.

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