Full text

Turn on search term navigation

© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

One of the main challenges in visual comfort assessment is controlling daylight in indoor spaces. The effect of daylight’s contribution to total light is one of the variables influencing how people perceive illumination in an indoor environment. This study investigates the optimal day-light-to-total light ratio that delivers the most satisfaction with the lighting environment. Therefore, a subjective survey of 509 questionnaires and field measurements in six office buildings in Tehran with a total of 257 rooms was conducted to assess lighting quality (daylight and artificial light). Furthermore, the effects of building characteristics and seasons on the acceptable range of daylight ratio are investigated. The results reveal that occupants prefer daylight to total light ratio ranging between 0.56 and 0.8. In contrast, occupants reported that a ratio less than 0.4 was unacceptable. It was also found that the optimum daylight-to-total light ratio is influenced by the season and the building characteristics.

Details

Title
The Impact of Evaluated Daylight to the Total Light Ratio on the Comfort Level in Office Buildings
Author
Fakhari, Maryam 1 ; Fayaz, Rima 2 ; Lollini, Roberto 3   VIAFID ORCID Logo 

 Institute for Renewable Energy, Eurac Research, Viale Druso 1, 39100 Bolzano, Italy; Department of Architectural Technology, Faculty of Architecture and Urbanism, University of Art, Tehran 1136813518, Iran 
 Department of Architectural Technology, Faculty of Architecture and Urbanism, University of Art, Tehran 1136813518, Iran 
 Institute for Renewable Energy, Eurac Research, Viale Druso 1, 39100 Bolzano, Italy 
First page
2161
Publication year
2022
Publication date
2022
Publisher
MDPI AG
e-ISSN
20755309
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2756674231
Copyright
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.