Introduction to optimal ADS handling for LESO occupants

Last but not least, some problems occurring within the examined ADS-equipped offices could be avoided by giving a short introduction on optimal ADS handling to some office occupants. Some of the problems revealed during this study (e. g. occupants feeling that their office is too dim or that they cannot find an appropriate lighting configuration) are indeed often the result of inadequate ADS handling.

2. Conclusion

Подпись: <u "я <u о Я я о Я я я я я <и Подпись: Office seems Glare Too much Too much Office seems Glare too bright. problems. light on daylight in too dim. problems workplane. office. difficult to handle.

This study clearly shows that the ADS installed within most offices of the LESO-SEB are in general very well accepted by the building’s occupants. There are, however, some issues that should be taken into consideration when installing ADS in other buildings. Our study has revealed that most of these problems are caused by temporary daylight overprovision within the offices. Figure 5 gives an overview of the main problems and quantifies how annoying these problems are to the occupants.

Figure 5: Overview of the main lighting related problems within the examined ADS-equipped office rooms. Annoyance values are in general quite low, and most problems are due to temporary daylight-overprovision, resulting from inappropriate blind configuration and blind control as well as problems with ADS handling.

It can be concluded that the annoyance of most problems revealed during our study could be drastically reduced by optimizing the blind configuration and the blind control as well as by giving introductions on how to properly handle the ADS to the building’s occupants. These findings can be of great interest to architects and engineers who plan similar systems for other buildings in the future.

References

[1] Wittkopf, S. K., Yuniarti, E. and Soon, L. K.: Prediction of energy savings with anidolic integrated ceiling across different daylight climates. Energy and Buildings 38, pp. 1120-1129, 2006.

[2] Scartezzini, J.-L. and Courret, G.: Anidolic daylighting systems. Solar Energy 73, pp. 123-135, 2002.

[3] Welford, W. T. and Wilson, R.: Non-Imaging Optics. Academic Press, New York, 1989.

[4] Courret, G., Scartezzini, Jean-Louis, David Francioli, D. and Meyer J.-J.: Design and assessment of an anidolic light-duct. Energy and Buildings 28, pp. 79-99, 1998.

[5] Courret, G., Scartezzini, J.-L.: Systemes anidoliques d’eclairage naturel. PhD thesis, Ecole Polytechnique Federale de Lausanne (Switzerland), 1999.

[6] Linhart, F. and Scartezzini, J.-L.: Efficient lighting strategies for office rooms in tropical climates. In PLEA 2007, pp. 360-367, Singapore, 2007.

[7] Altherr, R. and Gay, J.-B.: A low impact anidolic facade. Building and Environment 37, pp. 1409-1419, 2002.

[8] Eklund, N. H. and Boyce, P. R.: The development of a reliable, valid and simple office lighting survey. Journal of the Illuminating Engineering Society, v 25 n 2, pp. 25-40, 1996.

[9] Akashi, Y. and Boyce, P. R.: A field study of illuminance reduction. Energy and Buildings 38, pp. 588­599, 2006.

[10] Ramasoot, T. and Fotios, S.: Lighting for the classrooms of the future. In Lux junior 2007, Dornfeld, 2007.

[11] Gavin, G. and Deschamps, L.: Domotique — Configuration et installation d’un micro-serveur KNX « MyHomeBox ». Diploma project, EPFL, 2008.