A novel relationship is postulated expressing the direct ratio of a luminaire as a function of the room index. This permits the production of an approximate table of utilization factors for a given luminaire without any need for the directional distribution of intensity to be determined. Applications of the method are discussed.
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References
1.
The calculation and use of utilisation factors: Technical Memoranda TM5. London: Chartered Institution of Building Services, 1980.
2.
Dourgnon J. Nouvelle methode de prédétermination des coefficients d’utilisation, Rev. Gén. l’Electricité 1933; 33: 579.
