“LED-HBES” High efficiency lighting systems. A case study of an university historical building

The adoption of LED modules, now a well-established choice in any type of lighting design, combined with an appropriate home and building electronic system (HBES) for the control and the automation, allows to reach high energy efficiency and at the same time ensures excellent lighting comfort. The suggested approach, called “LED-HBES”, consists in the combination of a LED system integrated with a HBES control system The authors suggest a criterion based on the oversizing of the installations in terms of flux emitted, and at the same way, the adoption of a constant illuminance smart control regulated by an HBES, able to guarantee the optimal quantity of light in each part of the building and reduce the actual electric power consumed. The article focuses its attention by proposing a case study of a historic university building in which the LED-HBES model was applied. The energy performance sees a net improvement of more than 50%, moreover, the integration of a SCADA monitoring and supervision system ensures a consistency in performance throughout the life of the system, with maintenance and replacement appropriate to keep the lighting indexes always at nominal values.