Modifying Courtyard Wall Geometries to Optimize the Daylight Performance of the Courtyard

  • Ahmed A. Freewan
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 7)


A Courtyard in a building regulates its daylight, air movement and thermal interaction with the outdoor environment. The daylight performance of a courtyard depends principally on how the daylight received and delivered into interior spaces. The current research investigates how courtyards vertical surface geometries could improve the daylight in adjacent spaces of the courtyard. The research used Radiance to investigate the impact that vertical walls, inward sloped walls, outward sloped, staggered walls and double layer walls could have on both daylight quantity and quality. Courtyards with inward sloped, inward staggered and double layer walls were found to improve the daylight quality and control the excessive light level, while outward sloped and outward staggered walls increase daylight level.


Thermal Performance Vertical Wall Natural Ventilation Housing Project International Energy Agency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Beltran, L.O., Lee, E.S., Selkowitz, S.E.: optical daylighting systems: light shelves and light pipes. Journal of the Illuminating Engineering Society 20, 91–106 (1997)Google Scholar
  2. Calcagni, B., Paroncini, M.: Daylight factor prediction in atria building designs. Solar Energy 76, 669–682 (2004)CrossRefGoogle Scholar
  3. Freewan, A.A., Shao, L., Riffat, S.: Optimizing performance of the lightshelf by modifying ceiling geometry in highly luminous climates. Solar Energy 82, 343–353 (2008)CrossRefGoogle Scholar
  4. Freewan, A.A., Shao, L., Riffat, S.: Interactions between louvers and ceiling geometry for maximum daylighting performance. Renewable Energy 34, 223–232 (2009)CrossRefGoogle Scholar
  5. Greenup, P.J., Edmonds, I.R.: Test room measurements and computer simulations of the micro-light guiding shade daylight redirecting device. Solar Energy 76, 99–109 (2004)CrossRefGoogle Scholar
  6. Heschong, M. G.: Skylight and Retails Sales, an Investigation into relationship between Daylighting and human Performance. California, the pacific gas and electric company (1999 b)Google Scholar
  7. Johnsen, K.: Daylight in buildings, collaborative research in the International Energy Agency (IEA Task 21). Renewable Energy 15, 142–150 (1998)CrossRefGoogle Scholar
  8. Lam, J.C., Li, D.H.W.: Daylighting and energy analysis for air-conditioned office buildings. Energy 23, 79–89 (1998)CrossRefGoogle Scholar
  9. Li, D.H.W., Lam, J.C.: Evaluation of lighting performance in office buildings with daylighting controls. Energy and Buildings 33, 793–803 (2001)CrossRefGoogle Scholar
  10. Littlefair, P.: Daylight prediction in atrium buildings. Solar Energy 73, 105–109 (2002)CrossRefGoogle Scholar
  11. Mardaljevic, J.: Validation of a lighting simulation program under real sky conditions. Journal of Lighting Research and Technology 27(4), 181–188 (1995)CrossRefGoogle Scholar
  12. Mardaljevic, J.: Daylight simulation: validation, sky models and daylight coefficients. PhD thesis, De Montfort (1999)Google Scholar
  13. Moore, F.: Environmental control systems: heating cooling and lighting. McGraw-hill, Inc., New york (2000)Google Scholar
  14. Nazzal, A.A.: A new daylight glare evaluation method: Introduction of the monitoring protocol and calculation method. Energy and Buildings 33, 257–265 (2001)CrossRefGoogle Scholar
  15. Ochoa, C.E., Capeluto, I.G.: Evaluating visual comfort and performance of three natural lighting systems for deep office buildings in highly luminous climates. Building and Environment 41, 1128–1135 (2006)CrossRefGoogle Scholar
  16. Wittkopf, S.K., Yuniarti, E., Soon, L.K.: Prediction of energy savings with anidolic integrated ceiling across different daylight climates. Energy and Buildings 38, 1120–1129 (2006)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Ahmed A. Freewan
    • 1
  1. 1.Jordan University of Science and TechnologyIrbidJordan

Personalised recommendations