International Journal of

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One of the most important methods of saving energy and providing indoor comfort conditions of buildings is the careful design of the façades. A “double skin glass façade” is optimally one of the best options that control the heat interaction between indoor and outdoor spaces. Two kinds of heating energy is usually transmitted through exterior envelope “conduction” and “radiation”. Double skin glass façades (DSFg) are designed to manage these energies and in some special conditions, can prepare determined convection. The total solar radiation energy that can be received into the interior space, is one of the most important parameters for estimating the cooling load of the building and its occupants’ thermal comfort. DSFg also provides flexibility in architectural design. Recently, it has been more attention to double skin glass façades opposed to the most typically curtain walls for its ability to efficiently reduce energy consumption and therefore save cost. The design of the double skin glass façade involves decisions of geometric parameters, glass selection, ventilation strategy, shading, daylighting, wind loads, and maintenance and cleaning cost expectations. In this article, the authors intend to investigate features of double skin glass facade in reducing air pollution, air conditioning, fire safety and in the optimal use of sunlight within the building. In another part, this article will pay attention to the effect of wind, shading, type of glass and ventilation in the space between skins on the performance of double skin glass façade and their effect on energy saving. Finally, the authors analyze the rate of energy transfer from the double skin glass facade and provide four case studies. In addition, this paper shall review previous studies done on DSFg systems in building for saving energy.

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Shiraz, with its historical background, known as the capital of the Persian culture, once experienced a boom of international culture-led events using outdoor spaces as event venues. However, its outdoor vibrancy has withered gradually, and the use of public places as venues declined. Despite the existing dilemmas, a new wave of public place reclamation has created a strong trend towards using the spaces as outdoor venues. The main question of the research is what events are held in Shiraz year-round and how many of them are in public open spaces, and what events can be held in the public realm as outdoor. As in Iranian culture, the events and rituals follow the circular chronology of the Iranian, Islamic, and even Christian calendars; this article studies the events of a year-round time lap, making a clear typology in terms of places’ type and form. The listed events have been classified using the CHAID model adapted to identify the variety and temporality of the events that could occur outdoors. Finally, after categorizing the events, the spatial dispersion of events in the Shiraz urban area has been analyzed to reintroduce the existing platform for holding events and, with the help of the ‘Power of 10’ approach, the need to create or equip spaces and add venues to hold outdoor events in twelve urban ‘destinations’ has been emphasized.