Standard sky calculations for daylighting design and energy performance purposes

• Autorzy: Darula S. , Kittler R.
• Języki publikacji: EN

Abstrakty

EN

Daylight is important in the design of the healthy and energy efficient indoor environment. Until now the main criterion for indoor daylighting evaluation is the Daylight Factor assuming exterior overcast sky conditions. This criterion represents minimum daylight availability needed for visual tasks and work processes. However, various outdoor daylight situations can occur during any year including also sunny, cloudy, foggy states etc. The classification of sky luminance distributions that occur in nature was done and fifteen typical sky patterns were proposed for standardisation. This result was adopted and published as ISO 15469:2004/CIE S011/E:2003 Spatial distribution of daylight - CIE Standard general sky. The standard allows to calculate typical relative sky luminance distribution which can serve to predetermine sky luminances and exterior daylight illuminance in arbitrary time and locality. The ISO/CIE Standard General Sky concept is presented together with sky luminance calculations in relative and absolute photometric units. Such an approach can orientate building physic research activities to find new criteria, methods and procedures for daylight evaluations in interiors considering more realistic daylight conditions.

Słowa kluczowe

EN

daylighting; sky luminance distribution; standard daylight conditions; daylighting simulations; sky luminance calculation

PL

światło dzienne; rozkład luminacji nieba; wzorcowy warunek światła dziennego; symulacja światła dziennego; obliczenia luminacji nieba

• Wydawca: Instytut Fizyki Budowli Katarzyna i Piotr Klemm S.C.
• Czasopismo: Fizyka Budowli w Teorii i Praktyce
• Rocznik: 2009
• Tom: T. 4
• Strony: 23--28
• Opis fizyczny: Bibliogr. 28 poz.

Twórcy

autor

Darula S.

autor

Kittler R.

• Institute of Construction and Architecture, Slovak Academy of Sciences,

Bibliografia

• [1] STN 73 0580-1 Denné osvetlenie budov, Čast` I - Základné požiadavky (Daylighting in buildings, Part. 1 - Basic requirements).
• [2] ČSN 73 0580-1 Denni osvěleni budov - Část 1: Základni požadavky (Daylighting in buildings - Part 1: Basic Requierements).
• [3] DIN 5034-1 Tageslicht in Innenräumen - Teil 1: Allgemeine Anforderungen (Daylighting in indoors - Part 1 - General requirements).
• [4] BS 8206-2:2008 Lighting for Buildings Code of Practice for daylighting.
• [5] SNIP 23-05-95 Estestvennoe i iskystvennoye osveshcheniye (Natural and artificial lighting).
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• [11] ISO 15469:2004/CIE S011/E:2003 Spatial distribution of daylighting-CIE Standard General Sky.
• [12] Darula, S., Kittler, R., New trends in daylight theory based on the new ISO/CIE Sky Standard 1, Zenith luminance on overcast skies. Building Research Journal, 52 (2004) 3 181-197.
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• [23] Darula, S., Kittler, R., Sekvencie situácii dennej osvetlenosti v Bratislave (Sequences of daylight situations in Bratislava). Proc. 5th Int. Conf, Licht 2002, Brno, Česka společnost pro osvětlováni 2002 p. 20-24.
• [24] Darula, S., Kittler, R. CIE General Sky standard defining luminance distributions. The bi-annual conf. of IBPSA Canada eSim 2002, http://www.esim.ca/2002/documents/Proceedinss/other2.vdf.
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• [28] Roy, G.G., Kittler, R., Darula, S. An implementation of the Method of Aperture Meridians for the ISO/CIE Standard General Sky. Lighting Research and Technology. 39 (2007) 3 253-264.