References of "Dabaieh, Marwa"
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See detailReducing cooling demands in a hot dry climate: A simulation study for non-insulated passive cool roof thermal performance in residential buildings
Dabaieh, Marwa; Wanas, Omar; Amer, Mohamed ULiege et al

in Energy and Buildings (2015), 89(Supplement C), 142-152

In hot dry climates, it is estimated that almost half the urban peak load of energy consumption is used to satisfy air-conditioning cooling demands in summer time. Since the urbanization rate in ... [more ▼]

In hot dry climates, it is estimated that almost half the urban peak load of energy consumption is used to satisfy air-conditioning cooling demands in summer time. Since the urbanization rate in developing countries – like the case in Egypt – is rising rapidly, the pressure placed on energy resources to satisfy inhabitants’ indoor comfort requirements is consequently increasing too. This paper introduces passive cool roof as a means of reducing energy cooling loads for satisfying human comfort requirements in a hot climate. A designed algorithmic hybrid matrix was used to simulate 37 roof design probabilities alternating roof shape, roof material and construction. The result of using a vault roof with high albedo coating shows a fall of 53% in discomfort hours and saves 826 kW h during the summer season compared to the base case of the conventional non insulated flat roof in a typical Cairo residential buildings. It is recommended that the selected cool roof solution be combined with natural ventilation to increase the indoor thermal comfort, and with passive heating strategies to compensate the increase in heating hours. The application is intended for low cost residential buildings in a hot dry climate. [less ▲]

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See detailThe usability of green building rating systems in hot arid climates: A case study in Siwa, Egypt
Attia, Shady ULiege; Dabaieh, Marwa

in Proceedings of the 4th Biennial subtropical cities conference (2013, October)

In the last ten years there has been a proliferation of regional building rating systems across the Middle East (ME). Most those emerging rating systems and labels emulate the British and American rating ... [more ▼]

In the last ten years there has been a proliferation of regional building rating systems across the Middle East (ME). Most those emerging rating systems and labels emulate the British and American rating systems BREEAM and LEED that emerged in industrial countries context with an impact reduction paradigm. Thus they are neglecting the local historic, climatic, economic, technological, cultural and social context of the ME. This paper presents a case study of a recently constructed eco-lodge, AlBabenshal, in Siwa, Egypt, that performs beyond the existing rating systems requirements. The paper illustrates the environmental and sustainability design strategies adapted to AlBabenshal Lodge buildings’ context. In this study, the usability of existing rating systems in the ME is surveyed and their response to climate, occupants and society is evaluated. The paper presents a set of sustainability principles addressing (1) the site, (2) water, (3) energy, (4) resources, (5) comfort, (6) heritage and (7) social responsibility. In addition, the building is examined across the environmental criteria of LEED, Estidama Pearl Rating System and the Egyptian Green Pyramid Rating System (GPRS). Results showed that the building failed to comply with the three rating systems despite its sustainability and despite winning the Egyptian Hassan Fathy Award for environmental design. The paper elaborates on this conflict and presents recommendations to improve and adapt the questioned rating systems [less ▲]

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