Zbornik - SDR

“Lighting Control Systems To Improve energy performance…” R-5
Determining real energy saving potentials of any lighting control device or system is not an exact
science, since their performance depends on how they are applied and used. However more accurate
information on actual potential energy savings and availability of easy and reliable evaluation
methods could increase designers’ awareness and confidence in choosing lighting control systems for
both new or renovated buildings.
6 Conclusions
Interest in control systems and natural and artificial light integration has recently increased, as
has choice in products and solutions by lighting system manufacturers and companies from the
automation sector.
Nevertheless, frequently systems installed in tertiary buildings (office blocks, schools, etc.) have
been deactivated or tampered with following users’ non acceptance and dissatisfaction with
performance, but also by the impossibility or difficulty to interact with the system. This lack of
success is due to an uninformed choice of system or to it being unsuitable for tasks carried out in the
environment or user characteristics, incorrect design of system architecture, choice of components
that don’t always communicate, or not last, the difficulty to programme each component or entire
system. Customers and designers are often doubtful about these systems’ real efficiency when
considering the frequently high installation costs.
The Politecnico di Torino’s Department of Energy research in this sector is in fact inspired by
these considerations. The last objective in this activity is to draw up guidelines for the light control
systems project mostly for use by architects and lighting designers. The guide will cite results of both
specific theoretic and trial studies currently underway as well as aiming at providing support for
designers on:
- state of the art of currently available control systems;
- calculation methods for energy performance;
- information on environmental and energy performance, degree of acceptance and ways of
interaction between systems and user, in real situations.
7 References
1. CIE x015-1998, Proceedings of the First CIE Symposium on Lighting Quality, 9-10 May 1998,
National Research Council Canada, Ottawa/Ontario, Canada
2. Veitch J.A., 2001, Psychological processes influencing Lighting Quality, Journal of the
Illuminating Engineering Society, Vol 30, n.1, pp124-140
3. Boyce P.R., Human factors in lighting, 2nd Edition, Taylor & Francis, London, 2003
4. REA, M. S., The IESNA Lighting Handbook. Reference & application, Ninth Edition, FIES
editor in Chief , New York, 2000
5. http://ec.europa.eu/energy/demand/legislation/buildings_en.html,
6. CIBSE Briefing 6, The Energy Performance of Building Directive, Chartered Institution of
Building Services Engineers, 2003, London (www.diag.org.uk/pdf/CIBSE_Briefing.pdf)
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