IEC 60050 - International Electrotechnical Vocabulary


IEVref:	845-09-72	ID:
Language:	en	Status: Obsolete

Term:	configuration factor (between two surfaces S<sub>1</sub> and S<sub>2</sub>)
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Symbol:	c
Definition:	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) $c_{21} = \frac{E_{2}}{M_{1}}$ ; $c_{12} = \frac{E_{1}}{M_{2}}$ unit: 1 NOTE: The relation between the configuration factor c and the (mutual) exchange coefficient g is: $\int_{A_{2}} c_{21} d A_{2} = \frac{\int_{A_{2}} E_{2} d A_{2}}{M_{1}} = \frac{Φ_{2}}{M_{1}} = g = \frac{Φ_{1}}{M_{2}} = \frac{\int_{A_{1}} E_{1} d A_{1}}{M_{2}} = \int_{A_{1}} c_{12} d A_{1}$
Publication date:	1987
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Internal notes:	2015-10-21: Correction of the entry in accordance with the paper standard: addition of the sentence "NOTE: The relation between the configuration factor <i>c</i> and the (mutual) exchange coefficient <i>g</i> is:" and the figure img 845-09-721.gif. JGO 2017-06-02: Cleanup - Remove Attached Image 845-09-72.gif 2017-06-02: Cleanup - Remove Attached Image 845-09-721.gif
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