Lighting energy conservation: Simple analytic methods with time-lapse photography

M. S. Rea, R. R. Jaekel

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Although time-lapse photography offers great potential for providing information on lighting energy conservation, it has been undeveloped because the quantity and detail of the data demand a great deal of time for analysis. Two simple analytic procedures are described to make time-lapse photography more useful: (1) a sampling procedure for data reduction, and (2) a formula for computing wasted lighting energy based upon occupancy and light usage. It is argued that poor utilisation of lighting energy can be addressed with these procedures.

Original languageEnglish
Pages (from-to)77-82
Number of pages6
JournalLighting Research and Technology
Issue number2
StatePublished - Jun 1983
Externally publishedYes


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