GB/T 20148-2006 English PDF

US$214.00 · In stock
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GB/T 20148-2006: Spatial Distribution of Daylight -- CIE Standard General Sky
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20148-2006	214	Add to Cart	3 days	Spatial Distribution of Daylight -- CIE Standard General Sky	Valid

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Basic data

Standard ID: GB/T 20148-2006 (GB/T20148-2006)
Description (Translated English): Spatial Distribution of Daylight -- CIE Standard General Sky
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K70
Classification of International Standard: 17.180.20
Word Count Estimation: 11,137
Date of Issue: 2006-03-06
Date of Implementation: 2006-11-01
Quoted Standard: GB/T 2900.65; ISO 31-6-1992
Adopted Standard: CIE S 011/E-2003, IDT
Regulation (derived from): China Announcement of Newly Approved National Standards No. 4, 2006 (No. 91 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard provides a set of theoretical and practical applications are related to sun light and ceiling lighting outdoor daylight conditions linked. Given luminance distribution has the following characteristics: 1) they are symmetrical meridian sun, and are between the sun and the zenith angle of a function of the distance Zs. 2) they are defined as a smooth continuous function. This brightness distribution is typically sunny sky, characterized in that one of the clouds is monochrome. They can provide daylight for many practical calculations is sufficiently accurate approximation of fragmented clouds sky. 3) at any point in the sky relative brightness of the sky surface element depends on the angle between the sun and the sky surface element x zenith angle between Z. The relative brightness of the two functions is given, relative scattering characteristic curve f (x) and the line of sight between the zenith luminance tone �� (Z).

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