4.7 Article

Sensitivity analysis on daylighting and energy performance of perimeter offices with automated shading

Journal

BUILDING AND ENVIRONMENT
Volume 59, Issue -, Pages 303-314

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2012.08.028

Keywords

Building simulation; Uncertainty analysis; Sensitivity analysis; Extended FAST method; Daylighting; Energy consumption

Funding

  1. Energy Efficient Buildings Hub
  2. US Department of Energy [DE-EE0004261]

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This paper presents a comprehensive global uncertainty and sensitivity analysis of daylighting and energy performance for private offices with automated interior roller shades using an advanced integrated thermal and lighting simulation model. The purpose was to identify the more important factors with respect to building thermal and lighting energy performance so as to facilitate decision making in building design stage and simplify further investigation such as optimization analysis. Seven studied parameters were selected: window-to-floor ratio, shading transmittance, shading front and back reflectance, space aspect ratio, insulation thermal resistance and glazing type. The performance metrics include useful daylight illuminance (500-2000 lux), annual lighting, heating and cooling demand per unit floor area and annual source energy consumption per unit floor area. The uncertainty analysis is based on the Monte Carlo method with Latin Hypercube Sampling, showing the possible ranges in these performance indices. The sensitivity analysis uses a variance-based method in the extended FAST implementation. Application of the analysis to perimeter private office spaces for the climate of Philadelphia showed the first order and total order effects of each studied parameter to determine the building parameters that have the most significant impact. Results are presented for different facade orientations. (c) 2012 Elsevier Ltd. All rights reserved.

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