Jun 27, 2019   8:11 a.m. Ladislav
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Unified system of sky luminance patterns characterizing daylight availability and conditions in urban spaces

Supervisor: Ing. Miroslav Prešinský, PhD.

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Project description:The EU standard EN 15193 (adopted in Slovakia as STN EN 15193) for efficient utilization of natural resources (including daylight) is widely applied in the whole EU. Note, that an optimum utilization of daylight efficiently reduces energy consumption in buildings. The profound knowledge how the scattered light can behave in various areas is a crucial factor needed for the correct evaluation of "daylight climate". Today convenient calculation techniques largely simplify the real conditions. It is evident that mathematico-physical solution of radiative and luminous transfers in the atmosphere can provide significantly better results than currently used semi-empirical approaches and thus it makes the modeling of light conditions more realistic. At present it is still unknown how the stochastically shaped clouds with varying optical thickness, spectral reflectance, water content, altitude and position at the sky can influence the availability of diffuse light at the ground. Motivated by these facts, we plan to develop a more universal sky luminance/radiance model for a turbid and cloudy atmosphere. In addition, such a model will also account for multiple scattering effects, aerosol optics, surface albedo, and statistically relevant contribution of (broken) clouds. A common usability of the model and an incorporation of real environmental and atmospheric states will be the main advantages of the "unified system of skies" to be developed within the framework of the project.
Kind of project:APVV - Všeobecná výzva ()
Department:Department of Architecture (FCE)
Project identification:APVV-0177-10
Project status:Successfully completed
Project start date :01. 05. 2011
Project close date:31. 10. 2014
Number of workers in the project:2
Number of official workers in the project:0