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      DESIGN GUIDELINES FOR THE UTILIZATION OF TILTED FAÇADES TO ENHANCE BUILDING ENERGY PERFORMANCE

      , Ph.D. LEED AP 1 , , M. Arch 2

      Journal of Green Building

      College Publishing

      tilt, incline, façade, glass, glazing, energy, performance, fenestration, simulation

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          Abstract

          Intense solar radiation is one of the key design problems for buildings in tropical regions. The recommended practice is to install shading devices, particularly to protect glazing systems. However, many design factors do not allow shading devices to be implemented in all cases; shading devices may not be appropriate to particular design concepts. To serve the designers' preference, alternative solutions should be provided. This study aims at investigating the performance of a new design alternative—the tilted façade. By simply tilting a wall downward, solar radiation can be minimized in the same way as a shading device. The state-of-the-art energy software, eQUEST, was used to simulate energy performance of buildings in Bangkok, Thailand. At the same time, simulated results were confirmed by using experimental data monitoring from specially customized test cells. A wide range of WWR (Window to Wall Ratio) was tested against different façade orientations, glazing types, and shading devices with similar projected lengths. Tilted façades can be most effective for all orientations except for the north. Also, tilted façades allow designers to use more glass without any additional energy consumption. Based on these results, a set of design guidelines for using tilted facades are proposed. Designers can not only utilize these guidelines to effectively adjust façade angle but also optimize the glazing size for the best energy performance.

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          Author and article information

          Journal
          jgrb
          Journal of Green Building
          College Publishing
          1552-6100
          1943-4618
          1943-4618
          Winter 2012
          : 7
          : 1
          : 120-142
          Author notes

          1Faculty, Faculty of Architecture and Planning, Thammasat University, Thailand, vjatuwat@ 123456umich.edu .

          2Technology Analyst, Innovation & Technology Office, SCG Building Materials Co., Ltd., atiwatas@ 123456scg.co.th .

          Article
          jgb.7.1.120
          10.3992/jgb.7.1.120
          ©2012 by College Publishing. All rights reserved.

          Volumes 1-7 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

          Page count
          Pages: 23
          Product
          Categories
          RESEARCH ARTICLES

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