Queries, comments, suggestions? Please contact us.



Area Lighting / Lighting technology, day lighting

IEV ref845-09-72

Symbol
c

en
configuration factor (between two surfaces S1 and S2)
ratio of the irradiance or illuminance at a point on surface S2 (or S1) due to the flux received from surface S1 (or S2), to the radiant or luminous exitance of surface S1 (or S2)

c 21 = E 2 M 1 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadogadaWgaaWcbaGaaGOmaiaaigdaaeqaaOGaeyypa0ZaaSaaaeaacaWGfbWaaSbaaSqaaiaaikdaaeqaaaGcbaGaamytamaaBaaaleaacaaIXaaabeaaaaaaaa@3C70@ ; c 12 = E 1 M 2 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaaykW7caWGJbWaaSbaaSqaaiaaigdacaaIYaaabeaakiabg2da9maalaaabaGaamyramaaBaaaleaacaaIXaaabeaaaOqaaiaad2eadaWgaaWcbaGaaGOmaaqabaaaaaaa@3DFB@

unit: 1

NOTE: The relation between the configuration factor c and the (mutual) exchange coefficient g is:

A 2 c 21 d A 2 = A 2 E 2 d A 2 M 1 = Φ 2 M 1 =g= Φ 1 M 2 = A 1 E 1 d A 1 M 2 = A 1 c 12 d A 1 MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaapebabaGaam4yam aaBaaaleaacaaIYaGaaGymaaqabaaabaGaamyqamaaBaaameaacaaI YaaabeaaaSqab0Gaey4kIipakiaayIW7caaMi8Uaaeizaiaadgeada WgaaWcbaGaaGOmaaqabaGccqGH9aqpdaWcaaqaamaapebabaGaamyr amaaBaaaleaacaaIYaaabeaakiaayIW7caqGKbGaamyqamaaBaaale aacaaIYaaabeaaaeaacaWGbbWaaSbaaWqaaiaaikdaaeqaaaWcbeqd cqGHRiI8aaGcbaGaamytamaaBaaaleaacaaIXaaabeaaaaGccqGH9a qpdaWcaaqaaiabfA6agnaaBaaaleaacaaIYaaabeaaaOqaaiaad2ea daWgaaWcbaGaaGymaaqabaaaaOGaeyypa0Jaam4zaiabg2da9maala aabaGaeuOPdy0aaSbaaSqaaiaaigdaaeqaaaGcbaGaamytamaaBaaa leaacaaIYaaabeaaaaGccqGH9aqpdaWcaaqaamaapebabaGaamyram aaBaaaleaacaaIXaaabeaakiaayIW7caqGKbGaamyqamaaBaaaleaa caaIXaaabeaaaeaacaWGbbWaaSbaaWqaaiaaigdaaeqaaaWcbeqdcq GHRiI8aaGcbaGaamytamaaBaaaleaacaaIYaaabeaaaaGccqGH9aqp daWdraqaaiaadogadaWgaaWcbaGaaGymaiaaikdaaeqaaOGaaGjcVl aabsgacaWGbbWaaSbaaSqaaiaaigdaaeqaaaqaaiaadgeadaWgaaad baGaaGymaaqabaaaleqaniabgUIiYdaaaa@724F@


fr
facteur de configuration (entre deux surfaces S1 et S2) m
rapport de l'éclairement énergétique ou lumineux en un point de la surface S2 (ou S1) dû au flux reçu de la surface S1 (ou S2), à l'exitance énergétique ou lumineuse de la surface S1 (ou S2)

c 21 = E 2 M 1 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadogadaWgaaWcbaGaaGOmaiaaigdaaeqaaOGaeyypa0ZaaSaaaeaacaWGfbWaaSbaaSqaaiaaikdaaeqaaaGcbaGaamytamaaBaaaleaacaaIXaaabeaaaaaaaa@3C70@ ; c 12 = E 1 M 2 MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaaykW7caWGJbWaaSbaaSqaaiaaigdacaaIYaaabeaakiabg2da9maalaaabaGaamyramaaBaaaleaacaaIXaaabeaaaOqaaiaad2eadaWgaaWcbaGaaGOmaaqabaaaaaaa@3DFB@

unité : 1

NOTE: La relation entre le facteur de configuration c et le coefficient d'échange mutuel g est:

A 2 c 21 d A 2 = A 2 E 2 d A 2 M 1 = Φ 2 M 1 =g= Φ 1 M 2 = A 1 E 1 d A 1 M 2 = A 1 c 12 d A 1 MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaamaapebabaGaam4yam aaBaaaleaacaaIYaGaaGymaaqabaaabaGaamyqamaaBaaameaacaaI YaaabeaaaSqab0Gaey4kIipakiaayIW7caaMi8Uaaeizaiaadgeada WgaaWcbaGaaGOmaaqabaGccqGH9aqpdaWcaaqaamaapebabaGaamyr amaaBaaaleaacaaIYaaabeaakiaayIW7caqGKbGaamyqamaaBaaale aacaaIYaaabeaaaeaacaWGbbWaaSbaaWqaaiaaikdaaeqaaaWcbeqd cqGHRiI8aaGcbaGaamytamaaBaaaleaacaaIXaaabeaaaaGccqGH9a qpdaWcaaqaaiabfA6agnaaBaaaleaacaaIYaaabeaaaOqaaiaad2ea daWgaaWcbaGaaGymaaqabaaaaOGaeyypa0Jaam4zaiabg2da9maala aabaGaeuOPdy0aaSbaaSqaaiaaigdaaeqaaaGcbaGaamytamaaBaaa leaacaaIYaaabeaaaaGccqGH9aqpdaWcaaqaamaapebabaGaamyram aaBaaaleaacaaIXaaabeaakiaayIW7caqGKbGaamyqamaaBaaaleaa caaIXaaabeaaaeaacaWGbbWaaSbaaWqaaiaaigdaaeqaaaWcbeqdcq GHRiI8aaGcbaGaamytamaaBaaaleaacaaIYaaabeaaaaGccqGH9aqp daWdraqaaiaadogadaWgaaWcbaGaaGymaiaaikdaaeqaaOGaaGjcVl aabsgacaWGbbWaaSbaaSqaaiaaigdaaeqaaaqaaiaadgeadaWgaaad baGaaGymaaqabaaaleqaniabgUIiYdaaaa@724F@


ar
عامل الترتيب

de
..... (zwischen zwei Flächen S1 und S2)

es
factor de configuración

fi
…..

it
fattore di configurazione

ko
입체각 투사율, <두 표면 S<sub>1</sub> 과 S<sub>2</sub> 사이>

ja
立体角投射率

no
nb konfigurasjonsfaktor

nn konfigurasjonsfaktor

pl
współczynnik konfiguracji (między dwiema powierzchniami)

pt
factor de configuração (entre duas superfícies S1 e S2)

Publication date: 1987
Copyright © IEC 2020. All Rights Reserved.