Sensitivity analysis of important parameters affecting daylight - Assessment of a typical cellular office in Sweden
(2018) AEBM01 20181Division of Energy and Building Design
- Abstract
- The objective of this thesis was the impact evaluation of several parameters affecting daylight conditions in a typical cellular office in Lund, Sweden. The research approach that was followed consisted of three distinct steps; the literature review in order to specify the dependent and independent variables of the study, the simulation part to produce daylight performance data and the graphical analysis as interpretation of the data produced. The studied independent variables were: orientation, window shape, window size, window position, number of windows, glazing transmittance, window niche, reflectance of the surfaces and obstruction angle. To monitor their performance both dynamic and static indicators were used, generating both... (More)
- The objective of this thesis was the impact evaluation of several parameters affecting daylight conditions in a typical cellular office in Lund, Sweden. The research approach that was followed consisted of three distinct steps; the literature review in order to specify the dependent and independent variables of the study, the simulation part to produce daylight performance data and the graphical analysis as interpretation of the data produced. The studied independent variables were: orientation, window shape, window size, window position, number of windows, glazing transmittance, window niche, reflectance of the surfaces and obstruction angle. To monitor their performance both dynamic and static indicators were used, generating both expected and unexpected results. Some parameters such as the obstruction angle and the window-to-wall ratio, WWR, showed significant influence on the results. On the other hand, the window niche proved not to have any quantitative impact on office daylighting for the studied room. Considering the number and the shape of windows, for WWRs up until 30 % the best performing cases corresponded to single and square windows. Finally, meaningful correlations between static metrics were found. (Less)
- Popular Abstract
- Parameters influencing daylight levels in Swedish cell offices
People in modern societies spend the majority of their time indoors. On that account, we need to make our interior spaces healthier. Daylighting has been associated with significant benefits on human health. Thus, the provision of daylight must be ensured for our indoor spaces. It is argued that it must be present not only in private spaces but also in working environments. Most of the working hours take place during daytime and represent a significant proportion of a person’s daily life. Daylighting in working spaces is thus important to people’s health and well-being.
As highlighted, daylight admission in a building should be prioritized; especially in places where... (More) - Parameters influencing daylight levels in Swedish cell offices
People in modern societies spend the majority of their time indoors. On that account, we need to make our interior spaces healthier. Daylighting has been associated with significant benefits on human health. Thus, the provision of daylight must be ensured for our indoor spaces. It is argued that it must be present not only in private spaces but also in working environments. Most of the working hours take place during daytime and represent a significant proportion of a person’s daily life. Daylighting in working spaces is thus important to people’s health and well-being.
As highlighted, daylight admission in a building should be prioritized; especially in places where light is scarce or less abundant due to overcast sky conditions or a high latitude. In Scandinavian countries like Sweden, there are regulations and recommendations in the building code to ensure daylight availability for new or renovated buildings. The main objective of this research is to provide complementary information that can be used by architects during the early design stage, to make decisions on fenestration designs of cell offices. Are there specific parameters that affect daylight more? How do windows relate to them?
Initially, a literature review was conducted in order to specify the most important elements affecting daylight levels in a typical cell office. These included window geometry and arrangement on the façade, internal surface reflectance, building orientation and the surrounding urban context. The literature review also defined which indicators should be used to evaluate the daylight conditions. Some of these indicators involved simpler ways to evaluate daylight levels, assuming static climatic conditions. Others were more sophisticated, accounting for dynamic changes in the weather conditions, for the city of Lund in particular. Eventually, the impact of different design alternatives was assessed via computer simulations to conclude on which solutions are preferable and which ones should be avoided. The study also provided brief conclusions on correlations between different daylight indicators and the impact of geometric parameters on these indicators.
Overall, the daylight conditions of the office room were mostly affected by the urban context and the window size. Glazing properties as well as the reflectance of interior surfaces were also proven to play a major role on the final outcome. On the other hand, using strategies such as splaying the wall sides around the window showed no significant impact on illuminance levels. All conclusions were based on statistical analysis of results retrieved from more than 11.000 different design alternatives. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/8945725
- author
- Vogiatzi, Danai LU
- supervisor
- organization
- course
- AEBM01 20181
- year
- 2018
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- daylight, office, dynamic metrics, static metrics, orientation, glazing transmittance, surface reflectance, window size, shape, position, number and niche, obstruction angle, sensitivity analysis
- language
- English
- id
- 8945725
- date added to LUP
- 2018-06-19 14:24:34
- date last changed
- 2018-06-19 14:24:34
@misc{8945725,
abstract = {{The objective of this thesis was the impact evaluation of several parameters affecting daylight conditions in a typical cellular office in Lund, Sweden. The research approach that was followed consisted of three distinct steps; the literature review in order to specify the dependent and independent variables of the study, the simulation part to produce daylight performance data and the graphical analysis as interpretation of the data produced. The studied independent variables were: orientation, window shape, window size, window position, number of windows, glazing transmittance, window niche, reflectance of the surfaces and obstruction angle. To monitor their performance both dynamic and static indicators were used, generating both expected and unexpected results. Some parameters such as the obstruction angle and the window-to-wall ratio, WWR, showed significant influence on the results. On the other hand, the window niche proved not to have any quantitative impact on office daylighting for the studied room. Considering the number and the shape of windows, for WWRs up until 30 % the best performing cases corresponded to single and square windows. Finally, meaningful correlations between static metrics were found.}},
author = {{Vogiatzi, Danai}},
language = {{eng}},
note = {{Student Paper}},
title = {{Sensitivity analysis of important parameters affecting daylight - Assessment of a typical cellular office in Sweden}},
year = {{2018}},
}