IEVref:845-29-093ID:
Language:enStatus: Standard
Term: configuration factor, <between two surfaces>
Synonym1:
Synonym2:
Synonym3:
Symbol: c21
c12
Definition: quotient of the irradiance or illuminance, E2 (or E1), at a point on surface S2 (or S1) due to the flux received from surface S1 (or S2) and the radiant exitance or luminous exitance, M1 (or M2), of surface S1 (or S2)

c 21 = E 2 M 1 MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadogadaWgaaWcbaGaaGOmaiaaigdaaeqaaOGaeyypa0ZaaSaaaeaa caWGfbWaaSbaaSqaaiaaikdaaeqaaaGcbaGaamytamaaBaaaleaaca aIXaaabeaaaaaaaa@3E3A@

or

c 12 = E 1 M 2 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaai aadogadaWgaaWcbaGaaGymaiaaikdaaeqaaOGaeyypa0ZaaSaaaeaa caWGfbWaaSbaaSqaaiaaigdaaeqaaaGcbaGaamytamaaBaaaleaaca aIYaaabeaaaaaaaa@3E39@

Note 1 to entry: 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@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaam aapefabaGaam4yamaaBaaajeaybaGaaeOmaiaabgdaaSqabaGccaqG KbGaamyqamaaBaaaleaacaqGYaaabeaakiabg2da9maalaaabaWaa8 quaeaacaWGfbWaaSbaaKqaGfaacaqGYaaaleqaaOGaaeizaiaadgea daWgaaqcbawaaiaabkdaaeqaaaWcbaGaamyqamaaBaaajiaybaGaaG OmaaqabaaaleqaniabgUIiYdaakeaacaWGnbWaaSbaaKqaGfaacaqG XaaabeaaaaGccqGH9aqpdaWcaaqaaiaadA6adaWgaaqcbawaaiaabk daaeqaaaGcbaGaamytamaaBaaajeaybaGaaGymaaqabaaaaOGaeyyp a0Jaam4zaaWcbaGaamyqamaaBaaajiaybaGaaeOmaaqabaaaleqani abgUIiYdGccqGH9aqpdaWcaaqaaiaadA6adaWgaaqcbawaaiaabgda aeqaaaGcbaGaamytamaaBaaajeaybaGaaeOmaaWcbeaaaaGccqGH9a qpdaWcaaqaamaapefabaGaamyramaaBaaajeaybaGaaeymaaqabaGc caqGKbGaamyqamaaBaaajeaybaGaaeymaaqabaaaleaacaWGbbWaaS baaKGaGfaacaqGXaaabeaaaSqab0Gaey4kIipaaOqaaiaad2eadaWg aaqcbawaaiaabkdaaeqaaaaakiabg2da9maapefabaGaam4yamaaBa aajeaybaGaaeymaiaabkdaaSqabaGccaqGKbGaamyqamaaBaaajeay baGaaeymaaqabaaaleaacaWGbbWaaSbaaKGaGfaacaqGXaaabeaaaS qab0Gaey4kIipaaaa@72DC@

where Φ2 (or Φ1) is the flux received over surface S2 (or S1) from surface S1 (or S2) and A2 (or A1) is the area of surface S2 (or S1)

Note 2 to entry: The configuration factor has unit one.

Note 3 to entry: This entry was numbered 845-09-72 in IEC 60050-845:1987.


Publication date:2020-12
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