scholarly journals Energy saving in road tunnels by means of transparent tension structures

2010 ◽  
Vol 1 (08) ◽  
pp. 202-205 ◽  
Author(s):  
A. Peña García ◽  
L.M. Gil Martín ◽  
A. Espín Estrella ◽  
F. Aznar Dols
Keyword(s):  
Energy Saving ◽  
Road Tunnels ◽  
Tension Structures

scholarly journals A Scale Model of Tension Structures in Road Tunnels to Optimize the Use of Solar Light for Energy Saving

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Antonio Peña-García ◽  
Luisa-María Gil-Martín ◽  
Roberto Escribano ◽  
Antonio Espín-Estrella
Keyword(s):  
Energy Savings ◽  
Construction Materials ◽  
Electricity Consumption ◽  
Scale Model ◽  
Major Influence ◽  
Road Tunnels ◽  
Tension Structures ◽  
Materials Used ◽  
Set Up ◽  
New Equation

Shifting the threshold zone of road tunnels with semitransparent tension structures has shown itself to be an effective way of saving energy in regards to electricity consumption, maintenance, and construction materials used in the electrical lighting, thus lessening negative environmental impacts. Even though the shape of the tension structure has a major influence on energy savings, the optimal type of structure for each tunnel is often difficult to determine, because experiments using real tunnels are extremely expensive. It is thus necessary to find methods of doing this that are both reliable as well as economical. In this research study, three candidate structures were set up at the portal of a scale model of a real tunnel. The energy savings in each case were analyzed and compared. As a result, it was possible to formulate a new equation that calculates the energy savings in the threshold zone.

Tension structures: A way towards sustainable lighting in road tunnels

2011 ◽  
Vol 26 (1) ◽  
pp. 223-227 ◽  
Author(s):  
L.M. Gil-Martín ◽  
A. Peña-García ◽  
E. Hernández-Montes ◽  
A. Espín-Estrella
Keyword(s):  
Road Tunnels ◽  
Tension Structures

scholarly journals computational method to optimize energy savings of tension structures set in road tunnels

2011 ◽  
pp. 923-926 ◽  
Author(s):  
L.M. Gil Martín ◽  
A. Peña García ◽  
R. Escribano ◽  
A. Espín Estrella
Keyword(s):  
Energy Savings ◽  
Computational Method ◽  
Road Tunnels ◽  
Tension Structures

Clear asphalt concrete for energy saving in road tunnels

2014 ◽  
pp. 1817-1825 ◽  
Author(s):  
Edoardo Bocci ◽  
Maurizio Bocci
Keyword(s):  
Energy Saving ◽  
Asphalt Concrete ◽  
Road Tunnels

Subjective Time Preference and Willingness to Pay for an Energy-Saving Durable Good

2001 ◽  
Vol 32 (3) ◽  
pp. 133-141 ◽  
Author(s):  
Gerrit Antonides ◽  
Sophia R. Wunderink
Keyword(s):  
Willingness To Pay ◽  
Energy Saving ◽  
Subjective Time ◽  
Durable Good ◽  
Discount Function ◽  
Hyperbolic Discount ◽  
The One ◽  
Two Parameter ◽  
Difference Effect ◽  
Better Than

Summary: Different shapes of individual subjective discount functions were compared using real measures of willingness to accept future monetary outcomes in an experiment. The two-parameter hyperbolic discount function described the data better than three alternative one-parameter discount functions. However, the hyperbolic discount functions did not explain the common difference effect better than the classical discount function. Discount functions were also estimated from survey data of Dutch households who reported their willingness to postpone positive and negative amounts. Future positive amounts were discounted more than future negative amounts and smaller amounts were discounted more than larger amounts. Furthermore, younger people discounted more than older people. Finally, discount functions were used in explaining consumers' willingness to pay for an energy-saving durable good. In this case, the two-parameter discount model could not be estimated and the one-parameter models did not differ significantly in explaining the data.

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