Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Modelling and Simulation of Lighting Use Patterns in Office Spaces

Sara Gilani, William O'Brien
Department of Civil and Environmental Engineering, Carleton University, Ottawa, Canada.

Abstract: While building engineers attempt to automate building systems in modern high performance buildings, their efforts may lead to inverse consequences with respect to comfort and energy performance of buildings where they neglect occupants’ preferences. The objective of this research is to evaluate the impact of various light control systems, including automatic and manual, on lighting electricity use. To this end, probabilistic models for occupants’ presence and actions on lighting were developed based on empirical data being collected in 25 perimeter offices in a building. These probabilistic models and a set of light control systems were implemented in building performance simulation (BPS) tool EnergyPlus to assess lighting electricity consumption with various lighting control systems. The results indicate a reduction in lighting electricity use by a factor of seven with manual light control in comparison with the occupancy on and vacancy off. The ratio of lights on to the occupied period is reduced by 76% and 90% based on the experiment and simulation results, respectively, using the manual on and auto off control system compared to the auto on and off. Keywords: occupant behaviour, light control system, experiment, empirical-based model, building performance simulation.
Pages: 1230 - 1238