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Integrated Daylight and Energy Evaluation of Passive Solar Shadings in a Nordic Climate

Czachura, Agnieszka LU and Davidsson, Henrik LU (2021) EuroSun 2020 13th International Conference on Solar Energy for Buildings & Industry p.32-40
Abstract
Modern well-insulated and highly glazed buildings experience increased overheating, even in cold climates. The study focused on external and internal passive solar shadings on a south-oriented façade, having predetermined that external and internal shadings’ main function is solar heat gain and glare protection, respectively. A daytime-occupied office space with several external shading geometry variations was simulated using an integrated daylight and energy approach aided by Radiance, Daysim, and EnergyPlus within Grasshopper. The method involved preparation of daylight-driven lighting schedules, and glare-driven internal blinds operation schedules for each design scenario, which were further applied to annual energy simulations. The... (More)
Modern well-insulated and highly glazed buildings experience increased overheating, even in cold climates. The study focused on external and internal passive solar shadings on a south-oriented façade, having predetermined that external and internal shadings’ main function is solar heat gain and glare protection, respectively. A daytime-occupied office space with several external shading geometry variations was simulated using an integrated daylight and energy approach aided by Radiance, Daysim, and EnergyPlus within Grasshopper. The method involved preparation of daylight-driven lighting schedules, and glare-driven internal blinds operation schedules for each design scenario, which were further applied to annual energy simulations. The interdependence of light in visible and thermal form, its impact on the building performance, and the resulting occupant response to the changing indoor conditions are core to this study. The comparative nature of the study allowed to evaluate thermal and visual performance of fixed external shadings in Nordic climates. The chief study findings highlight the gross impact of internal shading operation on overall building performance and indoor comfort, and the holistic benefit of external solar protection that includes reduction of total energy use and improvement of occupants’ thermal and visual comfort. (Less)
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
passive solar shading, cold climate, daylight, energy use, glare, thermal comfort, overheating
host publication
Proceedings of the ISES EuroSun 2020 Conference
pages
9 pages
conference name
EuroSun 2020 13th International Conference on Solar Energy for Buildings & Industry
conference location
Virtual, Cyprus
conference dates
2021-09-01 - 2021-09-03
ISBN
978-3-9820408-2-0
language
English
LU publication?
yes
id
d53eb8b6-3071-4f6e-8dc5-6cbe25ded064
date added to LUP
2021-08-02 09:15:19
date last changed
2021-08-02 14:39:31
@inproceedings{d53eb8b6-3071-4f6e-8dc5-6cbe25ded064,
  abstract     = {{Modern well-insulated and highly glazed buildings experience increased overheating, even in cold climates. The study focused on external and internal passive solar shadings on a south-oriented façade, having predetermined that external and internal shadings’ main function is solar heat gain and glare protection, respectively. A daytime-occupied office space with several external shading geometry variations was simulated using an integrated daylight and energy approach aided by Radiance, Daysim, and EnergyPlus within Grasshopper. The method involved preparation of daylight-driven lighting schedules, and glare-driven internal blinds operation schedules for each design scenario, which were further applied to annual energy simulations. The interdependence of light in visible and thermal form, its impact on the building performance, and the resulting occupant response to the changing indoor conditions are core to this study. The comparative nature of the study allowed to evaluate thermal and visual performance of fixed external shadings in Nordic climates. The chief study findings highlight the gross impact of internal shading operation on overall building performance and indoor comfort, and the holistic benefit of external solar protection that includes reduction of total energy use and improvement of occupants’ thermal and visual comfort.}},
  author       = {{Czachura, Agnieszka and Davidsson, Henrik}},
  booktitle    = {{Proceedings of the ISES EuroSun 2020 Conference}},
  isbn         = {{978-3-9820408-2-0}},
  keywords     = {{passive solar shading; cold climate; daylight; energy use; glare; thermal comfort; overheating}},
  language     = {{eng}},
  month        = {{07}},
  pages        = {{32--40}},
  title        = {{Integrated Daylight and Energy Evaluation of Passive Solar Shadings in a Nordic Climate}},
  url          = {{https://lup.lub.lu.se/search/files/100796305/eurosun2020_Integrated_Daylight_Energy_Ev_Passive_Solar_Shadings_Nordic_Climate.pdf}},
  year         = {{2021}},
}