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    Contribution of a Passive Dynamic Façade to Energy Reduction, Daylight, and View Quality in a Hot, Arid Climate

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    Author
    Alhazzaa, Kifah Mohammed
    Issue Date
    2019
    Keywords
    Dynamic Facade
    Kinetic Facade
    Passive Energy
    Thermal Actuation
    Thermal Actuator
    Thermal Expansion
    Advisor
    Chalfoun, Nader V.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    There has been growing awareness in recent years of the energy consumption and interior environmental comfort of buildings. Substantial evaluation of the building envelope and indoor human experience is required to develop sustainable solutions, create a responsive system that enhances building performance and human comfort in terms of energy consumption and daylight quality. High-tech, dynamic façades have significant impacts on building performance and occupant comfort, but there are negative aspects to the concept of environmental and sustainable design, such as the initial cost, maintenance requirements, and high energy usage. In this paper, a new advanced integrated façade called a passive dynamic shading device (PDSD) is revealed. The system is designed to contribute to energy reduction, daylight availability, and view quality through its ability to change position and placement to respond and adapt to new climate conditions. The thermal expansion phenomenon was used in the actuation process, with heat-activated actuators that correspond to specific dry-bulb temperatures. This paper concisely demonstrates the functional mechanism of the PDSD concept. The focus is on the assessment of energy performance, daylight, and view quality when using PDSD. A numerical simulation was conducted to evaluate and analyze the potential energy savings and daylight control, and to improve the system in terms of material properties. The Energy Plus and Radiance platforms were used during the study to facilitate simulation of a dynamic system. The system is validated by comparing three cases with the same geometry, function, and fenestration. The first case has no shading device, the second has a fixed shading device, and the third has a PDSD. This work presents an example of application of the system in a region with a hot, arid climate that receives an enormous amount of direct solar radiation. The result shows the PDSD can efficiently reduce overall energy consumption by up to 50%, increase the amount and quality of daylight by up to 60% compared to fixed shading devices, and obstruct the view from the interior 22% of the year.
    Type
    text
    Electronic Thesis
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Architecture
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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