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Defining the Double-Skin Facade in the Postwar Era
Published in Clifton Fordham, Constructing Building Enclosures, 2020
Double-skin facades are essentially two glazed building skins separated by an air space. Over time, in pursuit of higher energy performance and occupant comfort, double skins have adopted emerging technologies, expanding the typology into a myriad of formal solutions. Instigating reasons for constructing enclosures with double layers of glass are multifaceted and practical. When glass is desirable for light or views, the buffer zone formed by the two layers improves interior thermal comfort and acoustic isolation. The air space provides a protected location for solar shading devices. Through strategic positioning of ventilation openings in one or both layers, air flow through the double-skin cavity may be used to facilitate ventilation, solar heating, cooling or a combination of these functions.1
Specific Devices for Natural Ventilation
Published in Cristian Ghiaus, Francis Allard, Natural Ventilation in the Urban Environment, 2012
Claude-Alain Roulet, Cristian Ghiaus
The most common device for natural ventilation is the operable window for which the mechanism involved is primarily wind-driven ventilation, although buoyancy may have a non-negligible effect. For automatic control of the airflow, the operable window may be mechanically actuated. For low flow rate, self-regulating vents may be used. These vents, used in wind-driven ventilation, provide a constant airflow rate for a large range of wind velocities. Stacks and chimneys are used for buoyancy-driven ventilation; when designed to take advantage of the wind, stacks become wind catchers. Double-skin façades allow natural ventilation and ensure noise insulation and security.
Passive heating techniques
Published in David Thorpe, Passive Solar Architecture Pocket Reference, 2018
Double-skin façades are used for high-rise buildings. They consist of two glass skins separated by air, which acts as an insulating barrier against temperature extremes, noise and wind. The outer layer is like a standard curtain wall. The main layer is commonly insulating. Between them, shading devices are often located.
Energy and thermal analysis of DSF in the retrofit design of office buildings in hot climates
Published in Architectural Engineering and Design Management, 2022
Sahar Khabir, Roza Vakilinezhad
During the past decade, applying double-skin facade systems has been identified as one of the most effective strategies for reducing existing buildings’ energy consumption and CO2 emissions(Ghaffarianhoseini et al., 2016; Pomponi, Piroozfar, Southall, Ashton, & Farr, 2016). The double-skin facade system is typically a hybrid strategy that consists of a new layer of facade attached to an existing facade with an air gap between them. Meanwhile, the DSF system can be considered a potential energy retrofit solution for improving the energy efficiency of existing buildings (Pomponi et al., 2015; Sarihi, Mehdizadeh Saradj, & Faizi, 2021). On the other hand, the most common passive strategy for decreasing energy consumption through the building facade is to increase or decrease the solar reflectance of the outer materials (Anna Laura Pisello, 2017). Despite numerous studies examining the effects of DSF systems on energy consumption, daylight, and thermal performance, no study has evaluated the use of various types of cool materials in conjunction with DSF systems to reduce energy consumption and greenhouse gas emissions. Hence, there is a need to examine how cool materials affect the thermal performance and energy efficiency of double-skin facades, especially in hot climates.
Double skin façade: energy performance in the United Arab Emirates
Published in Energy Sources, Part B: Economics, Planning, and Policy, 2021
Abdelsalam Aldawoud, Tareq Salameh, Young Ki Kim
A proprietary mathematical model of heat transfer through double-skin façades has been developed by (Anđelković et al. 2012) to estimate the thermal impact of double-skin façades on the energy performance of buildings. The study concluded that double-skin façades have decreased both building heat losses and heat gains throughout the year with significant contribution to the building the energy consumption savings. Another study was conducted by (Andjelković, Petrović, and Kljajić 2016) and used experimental work and numerical simulation to assess the impact of the double skin façades on buildings. The results of the experimental research show that the energy performance of the buildings with DSF depends on climatic conditions and regulation of the façade. Another study reported significant improvement in the thermal performance of buildings in tropical climates (Halawa et al. 2018). Researchers stated that utilizing ventilated double-skin façades has capabilities in preventing building overheating through absorbing solar radiation. (Ghaffarianhoseini et al. 2016) has carried out a literature review study to evaluate the potential benefits of the DSF fenestration system. The results point out that the double-skin façade can improve the buildings’ energy savings, ventilation, airflow, and thermal comfort.
Application of passive measures for energy conservation in buildings – a review
Published in Advances in Building Energy Research, 2019
Farhad Amirifard, Seyed Amirhosain Sharif, Fuzhan Nasiri
Hien, Liping, Chandra, Pandey, and Xiaolin (2005) compared the effects of a double-glazed façade with a single glazed façade system and investigated their impact on the energy consumption, thermal comfort, and condensation by simulation. The results indicated that energy consumption is minimized in double glazed façade with natural ventilation and thermal comfort improved simultaneously. Condensation problem can be solved by mechanical fans. Pasquay (2004) evaluated the energy performance of three different buildings with double-skin façades for one year. In one building all the air conditioning facilities were removed and replaced by a double skin façade, one building had cooling equipment without mechanical ventilation, and one building had cooling equipment combined with mechanical ventilation. The results showed that in the long term, double skin façades would be economically efficient for high- rise buildings and the problem of heat gain.