Energy savings needs are becoming ever more important in the global managing strategies of roads. Actual data on annual basis of the economical expenses for electrical energy consumptions reveal a constant and significant increase. This aspect, together with a growing concern for environmental protection, is pushing the companies which manage the roads to find the best solutions to reduce consumption of electricity. For primary roads, like freeways and arterials, the electrical loads that draw more electricity are generally the . These systems are also an essential element in ensuring safe driving, consequently the problem to be faced is dual. From one hand, the electrical consumptions have to be reduced, from the other, the safety of driving has to be ensured. The paper presents the work developed inside the Italian technical Committee of the World Road Association PIARC on the Strategic Theme 4 – Infrastructure for the specific topic “Balancing of environmental and engineering aspects in management of road networks”. In particular, some actual cases of tunnels in service in Italy are analysed modelling together both the electrical consumptions and the performance of the lighting systems. This models have been developed so that each tunnel is represented on an adequate (x,y) plane defined by two indexes. The first index measures the electrical consumption for each kilometre; the second index measures the performance of the lighting systems for unit of the illuminated area. The reference values of the indexes are derived from International Standards and from resolutions of the Italian Authority of Electrical Energy and Gas (AEEG). The cases presented show, initially, the existing operations of the tunnels, then, for each of them, the new positioning in the plan according to various possible investments. The results allow comparing the alternatives for each tunnel and also guiding the decision maker for sorting the choices, properly translated on economic ground.
Energy Savings and Performance Modelling of Tunnel Lighting Systems for Investments Decision-Making
VERDE, Paola;VARILONE, Pietro;
2015-01-01
Abstract
Energy savings needs are becoming ever more important in the global managing strategies of roads. Actual data on annual basis of the economical expenses for electrical energy consumptions reveal a constant and significant increase. This aspect, together with a growing concern for environmental protection, is pushing the companies which manage the roads to find the best solutions to reduce consumption of electricity. For primary roads, like freeways and arterials, the electrical loads that draw more electricity are generally the . These systems are also an essential element in ensuring safe driving, consequently the problem to be faced is dual. From one hand, the electrical consumptions have to be reduced, from the other, the safety of driving has to be ensured. The paper presents the work developed inside the Italian technical Committee of the World Road Association PIARC on the Strategic Theme 4 – Infrastructure for the specific topic “Balancing of environmental and engineering aspects in management of road networks”. In particular, some actual cases of tunnels in service in Italy are analysed modelling together both the electrical consumptions and the performance of the lighting systems. This models have been developed so that each tunnel is represented on an adequate (x,y) plane defined by two indexes. The first index measures the electrical consumption for each kilometre; the second index measures the performance of the lighting systems for unit of the illuminated area. The reference values of the indexes are derived from International Standards and from resolutions of the Italian Authority of Electrical Energy and Gas (AEEG). The cases presented show, initially, the existing operations of the tunnels, then, for each of them, the new positioning in the plan according to various possible investments. The results allow comparing the alternatives for each tunnel and also guiding the decision maker for sorting the choices, properly translated on economic ground.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
