Management Optimization of the Luminous Flux Regulation of a Lighting System in Road Tunnels. A First Approach to the Exertion of Predictive Control Systems

Ferdinando Salata, Iacopo Golasi, Alessandro Poliziani, Antonio Futia, Emanuele De Lieto Vollaro, Massimo Coppi and Andrea De Lieto Vollaro
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Ferdinando Salata: DIAEE—Area Fisica Tecnica, Università degli Studi di Roma “Sapienza”, Via Eudossiana, 18-00184 Rome, Italy
Iacopo Golasi: DIAEE—Area Fisica Tecnica, Università degli Studi di Roma “Sapienza”, Via Eudossiana, 18-00184 Rome, Italy
Alessandro Poliziani: DIAEE—Area Fisica Tecnica, Università degli Studi di Roma “Sapienza”, Via Eudossiana, 18-00184 Rome, Italy
Antonio Futia: DIAEE—Area Fisica Tecnica, Università degli Studi di Roma “Sapienza”, Via Eudossiana, 18-00184 Rome, Italy
Emanuele De Lieto Vollaro: DIMI—Università degli Studi “Roma TRE”, Via Vito Volterra, 62-00146 Rome, Italy
Massimo Coppi: DIAEE—Area Fisica Tecnica, Università degli Studi di Roma “Sapienza”, Via Eudossiana, 18-00184 Rome, Italy
Andrea De Lieto Vollaro: DIAEE—Area Fisica Tecnica, Università degli Studi di Roma “Sapienza”, Via Eudossiana, 18-00184 Rome, Italy

Sustainability, 2016, vol. 8, issue 11, 1-17

Abstract: Lighting very long road tunnels implies a high consumption of electrical energy since it requires a proper illumination during the whole day. In particular, in the daytime, the illuminance levels right at the tunnel entrance threshold and exit zones must be higher than those characterizing the inside of the tunnel; in this way, the eye of the driver is able to adapt and be safe while passing from a high natural illumination of the outside to the lighting conditions characterizing the inside of the tunnel. However this causes a high energy demand. Therefore, this case study investigates whether it is possible to minimize the energy demand through the exertion of an automatic new control system regulating the luminous fluxes of artificial sources (guaranteeing the parameters set by the regulation) with respect to the variation of the natural light characterizing the outside. The innovative control systems must be characterized by high reliability levels in order to guarantee conditions which are not dangerous to the driver if an outage occurs and minimize their maintenance costs. To carry out this type of study, the software DIALux was used to simulate a tunnel with a dimming system (with lamps characterized by a high luminous efficiency) regulated by a pre-programmed logic control system (with high Mean Time Between Failure (MTBF) values). The savings obtained enabled the amortization of the solution here suggested in a time interval that makes it an advantageous choice economically speaking.

Keywords: road tunnel; lighting systems; LED; control system; energy optimization; amortization costs (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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