Document Type : Original Article


Department of Architecture, Bam Branch, Islamic Azad University, Bam, Iran


Most of the spaces in contemporary houses in Iran cannot achieve enough daylight during daytime. Daylight utilization has a significant impact on decreasing energy consumption in residential buildings. Residents are deprived of natural daylight when there is no attention to the design based on daylight. Iranian traditional architects use practical and straightforward methods in constructing courtyards houses to provide comfort conditions in unique rooms in courtyard houses in terms of daylight quality. In this research, the daylight quality of five separate rooms around the courtyard of Yazdanpanah's house was investigated through an experimental method. Average work plane illuminance and uniformity ratio were calculated in these rooms of the house in Kerman city, located in Iran's hot and dry climate. Findings of this research demonstrated that all rooms surrounding the courtyard of traditional houses have the ability to achieve work plane illuminance of more than acceptable value. Among all rooms around the central courtyard, one room facing the south direction achieves more than 500 Lux work plane illuminance. The amount of uniformity in this room is acceptable with more than 0.5 on most of the days in a year. The findings of this research could be used to design more comfortable rooms in contemporary houses in terms of daylight quality by creating central courtyards.


Main Subjects

  1. Li, D.H.W., and Lam, J.C., 2003. An investigation of daylighting performance and energy saving in a daylit corridor. Energy and Buildings, 35(4), pp.365–373. Doi: 10.1016/S0378-7788(02)00107-X
  2. Alrubaih, M.S., Zain, M.F.M., Alghoul, M.A., Ibrahim, N.L.N., Shameri, M.A., and Elayeb, O., 2013. Research and development on aspects of daylighting fundamentals. Renewable and Sustainable Energy Reviews, 21, pp.494–505. Doi: 10.1016/J.RSER.2012.12.057
  3. Shahpoor Gheibi, and Mansour Nikpour, 2015. The Strategies of Passive Defense in Architecture of Old Districts in Kerman City. European Online Journal of Natural and Social Sciences, 4(3(s)), pp.337–342.
  4. Shabani, M.M., Tahir, M.M., and Arjmandi, H., 2010. Achieving Privacy in the Iranian Contemporary Compact Apartment Through Flexible Design. Selected Topics in Power Systems and Remote Sensing, , pp.285–296.
  5. Arjmandi, H., Tahir, M., Che-Ani, A., Abdullah, N.A., and Usman, I.M., 2010. Application of Transparency to Increase Day-Lighting Level of Interior Spaces of Dwellings in Tehran-A Lesson from the Past. Selected Topics in Power Systems and Remote Sensing, pp.297–307.
  6. Iranmanesh, N., and Bigdeli, E., 2009. Climatic design & low carbon city regarding the traditional, experiences Climatic design & low carbon city. In: 45th ISOCARP Congress.
  7. Behbood, K.T., Taleghani, M., and Heidari, S., 2010. Energy efficient architectural design strategies in hot-dry area of Iran: Kashan. Emirates Journal for Engineering Research, 15(2), pp.85–91.
  8. Zhang, X., Muneer, T., and Kubie, J., 2002. A design guide for performance assessment of solar light-pipes. Lighting Research & Technology, 34(2), pp.149–168. Doi: 10.1191/1365782802li041oa
  9. Freewan, A.A.Y., 2014. Impact of external shading devices on thermal and daylighting performance of offices in hot climate regions. Solar Energy, 102, pp.14–30. Doi: 10.1016/J.SOLENER.2014.01.009
  10. Nahid Tayari, and Mansour Nikpoor, 2015. The Study of the Proper Dimensions of the Window to the Outer Wall of Educational Spaces. European Online Journal of Natural and Social Sciences: Proceedings, 4(3(s)), pp.186–190.
  11. Maleki, B.A., 2012. Natural Daylighting in Iranian Hot and Arid Region. International Journal on “Technical and Physical Problems of Engineering, 4(11), pp.191–196.
  12. Ihm, P., Nemri, A., and Krarti, M., 2009. Estimation of lighting energy savings from daylighting. Building and Environment, 44(3), pp.509–514. Doi: 10.1016/J.BUILDENV.2008.04.016
  13. Tayari, N., and Nikpour, M., 2022. Effect of Different Proportions of Courtyard Buildings in Hot-Dry Climate on Energy Consumption (Case Study: Traditional Courtyard Houses of Kerman, Iran). Iranian (Iranica) Journal of Energy and Environment, 13(1), pp.39–45. Doi: 10.5829/IJEE.2022.13.01.05
  14. Johnsen, K., 1998. Daylight in buildings, collaborative research in the International Energy Agency (IEA Task 21). Renewable Energy, 15(1–4), pp.142–150. Doi: 10.1016/S0960-1481(98)00165-7
  15. Baboli, F.B.M., Ibrahim, N., and Sharif, D.M., 2015. Design Characteristics and Adaptive Role of the Traditional Courtyard Houses in the Moderate Climate of Iran. Procedia - Social and Behavioral Sciences, 201, pp.213–223. Doi: 10.1016/J.SBSPRO.2015.08.170
  16. Nabil, A., and Mardaljevic, J., 2016. Useful daylight illuminance: a new paradigm for assessing daylight in buildings:, 37(1), pp.41–59. Doi: 10.1191/1365782805LI128OA
  17. Abdoli Naser, S., Haghparast, F., Singery, M., and Sattari Sarbangholi, H., 2021. Investigating on Evolution of Windows from Qajar to Pahlavi Era in Tabriz’s Ganjei-Zade House with Heat Dissipation Approach. Iranian (Iranica) Journal of Energy and Environment, 12(3), pp.226–233. Doi: 10.5829/ijee. 2021.12.03.07
  18. Li, D.H.W., 2010. A review of daylight illuminance determinations and energy implications. Applied Energy, 87(7), pp.2109–2118. Doi: 10.1016/J.APENERGY.2010.03.004
  19. Guedouh, M.S., and Zemmouri, N., 2017. Courtyard Building’s Morphology Impact on Thermal and Luminous Environments in Hot and Arid Region. Energy Procedia, 119, pp.153–162. Doi: 10.1016/J.EGYPRO.2017.07.063
  20. Dubois, C., Demers, C., and Potvin, andré, 2007. The influence of daylighting on occuopants: comfort and diversity of luminous ambiences in architecture In: Proceedings of the Solar Conference, vol. 2. American Solar Energy Society; American Institute of Architects. pp 1–6.
  21. Reinhart, C.F., Mardaljevic, J., and Rogers, Z., 2006. Dynamic Daylight Performance Metrics for Sustainable Building Design. Leukos, 3(1), pp.7–31. Doi: 10.1582/LEUKOS.2006.03.01.001