The Analysis of Daylight Factor and Illumination in Iranian Traditional Architecture, Case Studies: Qajar Era Houses, Qazvin, Iran

نوع مقاله: مقاله پژوهشی

نویسندگان

1 Associate Professor of Architecture, Faculty of Architecture and Urbanism, Imam Khomeini International University, Qazvin, Iran.

2 Master Student of Architecture, Faculty of Architecture and Urbanism, Imam Khomeini International University, Qazvin, Iran.


عنوان مقاله [English]

The Analysis of Daylight Factor and Illumination in Iranian Traditional Architecture, Case Studies: Qajar Era Houses, Qazvin, Iran

نویسندگان [English]

  • Yousef Gorji Mahlabani 1
  • Aliasghar Mofrad Boushehri 2
1 Associate Professor of Architecture, Faculty of Architecture and Urbanism, Imam Khomeini International University, Qazvin, Iran.
2 Master Student of Architecture, Faculty of Architecture and Urbanism, Imam Khomeini International University, Qazvin, Iran.
چکیده [English]

As buildings are the biggest consumers of energy, reducing the total energy consumption in
this area may have a significant role in preserving non-renewable resources. Appropriate use of daylight
may decrease the need for electric lighting which may lead to reduced energy consumption and costs in
lighting. Moreover, in the Iranian traditional architecture, there have been various passive strategies to
take advantage of the renewable resources to provide thermal and visual comfort for users. Using daylight
is one of these methods and strategies. The present study aims at analyzing the lighting condition of these
buildings. Therefore, four buildings in Qazvin city, which belong to Qajar period (1785-7925 A.D.), were
selected as the case studies. Then, the elected buildings were simulated as three-dimensional models.
Finally, the analysis of daylight factor and illuminance was conducted using Ecotect Analysis, Energy
Plus and VELUX Daylight Visualizer Software. After the analysis of data obtained from the respective
simulations and their comparison with the extant standards of lighting, it was found that the average
daylight factor at all under-scrutiny rooms was acceptable; in addition, 76 percent of rooms required
no artificial light during the daytime. The reason for appropriate lighting in these spaces is positioning
alongside the sunlit side of the building as well as use of big windows. In addition, the analysis of
illuminance shows that the distribution of light in interior spaces is even. Moreover, although much
amount of light enters the space, the use of light color prevents contrast and daze while enhances visual
comfort.

کلیدواژه‌ها [English]

  • Iranian Traditional Architecture
  • Daylight Simulation Software
  • Illuminance
  • Daylight Factor