bs2021_30604.pdf (6.43 MB)
Aperture-based daylight modelling: evaluating the airmass refinement for the sunlight beam index
conference contributionposted on 2023-04-21, 08:50 authored by John Mardaljevic, Eleonora Brembilla
Aperture-based daylight modelling (ABDM) is a new building simulation paradigm founded on measures of an aperture's 'connectedness' to the sun and the external environment. At the planning level, there currently does not exist anywhere an evaluative schema which is equally applicable to measures of solar energy potential (for PV performance, overheating risk, etc) and measures of sunlight/daylight amenity (for daylight, well-being, connectivity/view, etc). ABDM addresses that shortcoming. This paper describes the latest development of ABDM which is the addition of an airmass factor in the computation of the sunlight beam index (SBI). This enhancement preserves the 'geometrical purity' of ABDM, but now airmass SBI can serve as a reliable proxy for direct sun irradiation totals derived from weather files.
- Architecture, Building and Civil Engineering
Published inProceedings of Building Simulation 2021: 17th Conference of IBPSA
Pages342 - 349
SourceBuilding Simulation 2021: 17th Conference of IBPSA
PublisherInternational Building Performance Simulation Association (IBPSA)
- VoR (Version of Record)
Rights holder© International Building Performance Simulation Association
Publisher statementThis paper was published in the Proceedings of Building Simulation 2021: 17th Conference of IBPSA. This paper is available at https://doi.org/10.26868/25222708.2021.30604 and is reproduced here with the permission of the publisher.