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Comparison of Different Methods of Distribution Factor Calculation

Raynham, PJ; Thorns, P; (2017) Comparison of Different Methods of Distribution Factor Calculation. In: Proceedings of the European Lighting Conference - Lighting for modern society. Lighting Engineering Society of Slovenia: Ljubljana, Slovenia. Green open access

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Abstract

The calculation of utilization factors relies on geometric multipliers to arrive at the distribution factors which give the fraction of the source flux arrives directly at each room surface. There are a number of possible assumptions that can be used to derive geometric multipliers each resulting in different values. This paper explores these differences and estimates the potential differences in utilisation values that may be expected. The key finding is the method in CIE 52 may no longer be appropriate.

Type: Proceedings paper
Title: Comparison of Different Methods of Distribution Factor Calculation
Event: European Lighting Conference - Lighting for modern society
Location: Ljubljana Slovenia
Dates: 18 September 2017 - 20 September 2017
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.luxeuropa2017.eu/
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Utilization factor, distribution factor, geometric multiplier
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10025083
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