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Perceived daylight conditions in multi-family apartment blocks – Instrument validation and correlation with room geometry

Bournas, Iason LU ; Dubois, Marie Claude LU and Laike, Thorbjörn LU (2020) In Building and Environment 169.
Abstract

This article investigates the relation between subjective evaluations and objective measurements of daylighting in multi-family residential buildings. More specifically, the suitability of an observer-based environmental assessment (OBEA) instrument to assess indoor daylight conditions was tested in a field study conducted in six typical multi-family apartment buildings in the central and metropolitan area of Malmö (Latitude: 55.6 °N), Sweden. The OBEA used self-administered questionnaires based on bipolar semantic scales aiming to capture two perceived daylight qualities: brightness and distribution. Following a factorial approach, one component pertaining to perceived brightness was deducted (“Brightness”, Cronbach's alpha = 0.89) and... (More)

This article investigates the relation between subjective evaluations and objective measurements of daylighting in multi-family residential buildings. More specifically, the suitability of an observer-based environmental assessment (OBEA) instrument to assess indoor daylight conditions was tested in a field study conducted in six typical multi-family apartment buildings in the central and metropolitan area of Malmö (Latitude: 55.6 °N), Sweden. The OBEA used self-administered questionnaires based on bipolar semantic scales aiming to capture two perceived daylight qualities: brightness and distribution. Following a factorial approach, one component pertaining to perceived brightness was deducted (“Brightness”, Cronbach's alpha = 0.89) and validated by associating it with outdoor global horizontal irradiance (Spearman's rS = 0.566, p = 0.006), which was monitored during the survey. Subsequently, this component was correlated with key geometric attributes of the investigated apartments to highlight the most important associations between perceived brightness and room geometry. Results indicate that the OBEA displays high internal reliability for the derived component, and is fit for daylight perception evaluations in residential spaces. In addition, the analysis showed a tendency for variables pertaining to window size to associate with perceived brightness, but also contributing to this association was the level of global horizontal irradiance.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Brightness, Daylight, Perception, Residential environment, Room geometry
in
Building and Environment
volume
169
article number
106574
publisher
Elsevier
external identifiers
  • scopus:85075974658
ISSN
0360-1323
DOI
10.1016/j.buildenv.2019.106574
language
English
LU publication?
yes
id
54ba7d3c-f4e0-4fad-a565-51656486b2b9
date added to LUP
2019-12-19 10:41:07
date last changed
2020-01-13 02:36:59
@article{54ba7d3c-f4e0-4fad-a565-51656486b2b9,
  abstract     = {<p>This article investigates the relation between subjective evaluations and objective measurements of daylighting in multi-family residential buildings. More specifically, the suitability of an observer-based environmental assessment (OBEA) instrument to assess indoor daylight conditions was tested in a field study conducted in six typical multi-family apartment buildings in the central and metropolitan area of Malmö (Latitude: 55.6 °N), Sweden. The OBEA used self-administered questionnaires based on bipolar semantic scales aiming to capture two perceived daylight qualities: brightness and distribution. Following a factorial approach, one component pertaining to perceived brightness was deducted (“Brightness”, Cronbach's alpha = 0.89) and validated by associating it with outdoor global horizontal irradiance (Spearman's r<sub>S</sub> = 0.566, p = 0.006), which was monitored during the survey. Subsequently, this component was correlated with key geometric attributes of the investigated apartments to highlight the most important associations between perceived brightness and room geometry. Results indicate that the OBEA displays high internal reliability for the derived component, and is fit for daylight perception evaluations in residential spaces. In addition, the analysis showed a tendency for variables pertaining to window size to associate with perceived brightness, but also contributing to this association was the level of global horizontal irradiance.</p>},
  author       = {Bournas, Iason and Dubois, Marie Claude and Laike, Thorbjörn},
  issn         = {0360-1323},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {Building and Environment},
  title        = {Perceived daylight conditions in multi-family apartment blocks – Instrument validation and correlation with room geometry},
  url          = {http://dx.doi.org/10.1016/j.buildenv.2019.106574},
  doi          = {10.1016/j.buildenv.2019.106574},
  volume       = {169},
  year         = {2020},
}