Using simulation for studying the influence of vertical shading devices on the thermal performance of residential buildings (Case study: New Assiut City)

Low-energy residential buildings in New Borg El Arab: Simulation and survey based energy assessment

“…This has been confirmed by Fahmy, who has investigated the effect of an external wall with glass fibre reinforced concrete [10]. Both Abd El-Monteleb and Mahdy, Nikolopoulou showed that external shading systems can save energy in many Egyptian locations [11,12]. Mahdy and Nikolopoulou have also analyzed different window typologies, finding that a clear reflective glass has to be used, if the building has not shading systems [12].…”

Thermal Behaviour Assessment For The Different Building Envelope Parts In Egypt Under Climate Change Scenarios

“…A reduction of 1.5°C was achieved using vertical fins and combined shading devices, while Ahmed and Tarek (14) searching the impact of different shading devices on the thermal performance in residential buildings in Egypt. Ahmed (5) concluded that, vertical fins with a depth of 38cm or more result in a decrease of 2°C in indoor temperature for all the four orientation(s), when he was investigating the effect of vertical fins' depth on the thermal performance of residential buildings in Egypt. Another study (15) showed that power consumption from air conditioning is reduced by an average of 25% if external shading is properly installed.…”

“…Due to the nature of the hot arid climate zone in which Egypt is located, external walls with large thickness have always been preferred in the vernacular architecture as a passive technique to reduce the heat and delay its transfer from the harsh external conditions [6] . Despite the impact of this technique on improving the thermal performance of residential buildings, particularly in hot arid zones, people are no longer using it [5] to cut costs and to save the indoor area. At present, the most widely used (specification) (for) external walls in the residential sector is the half redbrick (12 cm thickness).…”

“…As the building envelope controls the flow of heat between outdoor and indoor environments, a good envelope design plays a major role in determining the amount of energy a building will use in its operation (2) , and can show optimization between natural lighting and thermal performance through passive solar techniques (3,4) .The effect of (a) building envelope depends on the selection of its consisting materials and their thicknesses, including the use of new thermal insulation materials to increases(increase) the thermal resistance of the external walls and ceilings, and the selection of appropriate fenestration (i.e. window-to-wall ratio (WWR)), glazing type)with(while) applying the needed vertical and horizontal shading devices [1,5] . Good external walls and ceiling insulation, are the first step to improve the indoor thermal behaviour and reduce the energy consumption, as about 8% of (the) energy used in buildings (is) wasted through the external walls, and about 6% wasted through the ceilings [3] .…”

The effect of dynamic solar shading on energy, daylighting and thermal comfort in a nearly zero-energy loft room in Rome and Copenhagen

“…al[44], Kim et. al[45], Ali Ahmed[46],Karlsson, Karlsson & Roos [47] and Sullivan et. al[48] focused mainly on the thermal performance of solar shading.…”