Paper Conference

Proceedings of eSim 2002: 2nd Conference of IBPSA-Canada

     

CIE GENERAL SKY STANDARD DEFINING LUMINANCE DISTRIBUTIONS

Stanislav Darula, Richard Kittler

Abstract: Daylighting calculations depend on the luminance distribution of the sky. The new concept of sky luminance distributions is modelling skies under a wide range of occurrences from the overcast sky to cloudless situations without or with sunlight respectively. This concept was proposed for the standardisation of exterior daylight conditions by CIE (Commission Internationale de l′Éclairage) for the world wide application. In this paper the calculation procedure of the relative sky luminance distribution and sky parametrisation of the fifteen standardised patterns is described. The CIE Standard General Sky is a generalisation of the CIE Clear Sky formula and the presented sky set is expected to be published as CIE standard. It could provide good means for the characterisation of daylight climate in any arbitrary locality or for the calculation of exterior daylight which both define the basic sources of daylight simulations in interiors.
Paper:
esim2002_o2