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Daylight in dynamic thermal modelling programs: Case study

Research in Building Group, Polytechnic of Central London, 35 Marylebone Road, London NW1 5LS, UK

P.J. Littlefair, MA PhD

DoE Building Research Establishment, Building Research Station, Garston, Watford WD2 7JR, UK

Heating, cooling and lighting energy consumptions in buildings are inter-related, and a model which treats thermal performance and lighting simultaneously is required in order to evaluate the full benefits of daylighting in buildings. A lighting facility has been included in a dynamic building simulation program (SERI-RES) used in the Department of Energy's passive solar programme. Interior daylight illuminance is calculated using an extension of the daylight factor method. The lighting usage of various lighting systems is predicted from the daylight illuminance, and the thermal consequences of that lighting use included in the thermal simulation of the building. The applicability of the method described in this paper is not limited to SERI-RES. The method could be incorporated in any building energy analysis program intended for the UK or similar climates.

Building Services Engineering Research and Technology, Vol. 9, No. 4, 183-188 (1988)
DOI: 10.1177/014362448800900406


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