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Lighting Research and Technology
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A field study of occupant controlled lighting in offices

T Moore, BSc PhD

Pinniger and Partners, Godstone, Surrey, UK

DJ Carter, MSc PhD CEng FCIBSE FILE FSLL

Department of Architecture and Building Engineering, University of Liverpool, Liverpool, UK, Eb09{at}liv.ac.uk

AI Slater, BSc MPhil FCIBSE

Building Research Establishment Ltd, Garston, Watford, UK

A study of 14 open-plan offices equipped with occupant controlled general lighting recorded achieved workstation lighting conditions at a number of times of the year. The results confirmed the occurrence of a wide range of workstation lighting levels, many significantly below CIBSE Code recommendations, with average electrical loadings due to lighting in the order of 55% of maximum. System con-figuration had a significant influence on luminaire output, illuminances and energy consumption. In general the lowest luminaire outputs were in buildings where the default reset level was to a low output, with the highest outputs being in buildings having high reset levels and large control groups. In addition locally sited control devices were associated with lower luminaire output.

Lighting Research and Technology, Vol. 34, No. 3, 191-202 (2002)
DOI: 10.1191/1365782802lt047oa
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G.R. Newsham, M.B.C. Aries, S. Mancini, and G. Faye
Individual control of electric lighting in a daylit space
Lighting Research and Technology, March 1, 2008; 40(1): 25 - 41.
[Abstract] [PDF]