Impact of geometrical resolution on long-term climate-based daylight metrics

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


3D modeling of indoor spaces is a prerequisite for daylight simulation, and the accuracy of the 3D models has a significant impact on the simulation. The goal of this study was to quantify the errors caused by modeling indoor spaces at different accuracy levels to find the optimal balance between the reliability of the results and labor investment. For this purpose, we introduce a level of detail (LOD) concept for indoor spaces based on the size of non-permanent indoor objects by inclusion and exclusion from the simulation scene. The errors corresponding to models with low accuracies are measured by climate-based simulation using an improved two-phase method. Our results show that inaccurate modeling of indoor spaces causes between 10-70% error in TAI with 25% median across all spaces.
Original languageEnglish
Title of host publicationProceedings of Building Simulation 2023
Subtitle of host publication18th Conference of IBPSA
Place of PublicationShanghai
Number of pages7
ISBN (Print)978-1-7750520-3-6
Publication statusPublished - 2024
EventBuilding Simulation 2023: 18th International Conference of the Building Performance Simulation Association - Tongji University, Shanghai, China
Duration: 4 Sept 20236 Sept 2023
Conference number: 18

Publication series

NameBuilding Simulation Conference proceedings
ISSN (Print)2522-2708


ConferenceBuilding Simulation 2023
Abbreviated titleBS23
OtherFollowing the successful BS2021 in Bruges, Shanghai will take the relay in hosting the next worldwide Building Simulation Conference! BS2023 will see the return of the conference to China after 16 years. The regional affiliate, IBPSA-China, is honored to present an efficient, interactive, warm and safe reunion to the community. Please subscribe to our mail list to stay informed.

BS2023 continues to be a Hybrid event. However, with all travel restrictions to China lifted, we highly recommend you to attend in person, for a better social networking experience and a great chance to explore the mainland China.

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • daylight
  • blinds automated control
  • complex fenestration systems
  • radiance matrix methods


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