This page has only limited features, please log in for full access.
Tunnel lighting is the most significant component in total energy consumption in the whole infrastructure. Hence, various lighting control strategies based on light-emitting diode (LED) technology have been investigated to conserve energy by decreasing luminaires’ operating time. In this study, four kinds of tunnel lighting control strategies and the development of their associated technologies are evaluated: no-control low-consumption lamps (LCL), time-scheduling control strategy (TSCS), daylight adaptation control strategy (DACS), and intelligent control strategy (ICS). This work investigates the relationship between initial investment and electrical costs as a function of tunnel length (L) and daily traffic volume (N) for the four control strategies. The analysis was performed using 100-day data collected in eleven Chinese tunnels. The tunnel length (L) ranged from 600 m to 3300 m and the daily traffic volume (N) ranged from 700 to 2500. The results showed that initial investment costs increase with L for all control strategies. Also, the electricity costs for the LCL, TSCS, and DACS strategies increased linearly with L, whereas the electricity cost for the ICS strategy has an exponential growth with L and N. The results showed that for a lifetime equal to or shorter than 218 days, the LCL strategy offered the best economical solution; whereas for a lifetime longer than 955 days, the ICS strategy offered the best economical solution. For a lifetime between 218 and 955 days, the most suitable strategy varies with tunnel length and traffic volume. This study’s results can guide the decision-making process during the tunnel lighting system’s design stage.
Li Qin; Antonio Peña-García; Arturo Leon; Jian-Cheng Yu. Comparative Study of Energy Savings for Various Control Strategies in the Tunnel Lighting System. Applied Sciences 2021, 11, 6372 .
AMA StyleLi Qin, Antonio Peña-García, Arturo Leon, Jian-Cheng Yu. Comparative Study of Energy Savings for Various Control Strategies in the Tunnel Lighting System. Applied Sciences. 2021; 11 (14):6372.
Chicago/Turabian StyleLi Qin; Antonio Peña-García; Arturo Leon; Jian-Cheng Yu. 2021. "Comparative Study of Energy Savings for Various Control Strategies in the Tunnel Lighting System." Applied Sciences 11, no. 14: 6372.
Large scientific infrastructures are a major focus of progress. They have a big impact on the economic and social development of their surroundings. Departing from these well-known facts, it is not trivial to affirm whether the global contribution to Sustainable Development (SD) is higher when they are built in peripheral and not highly developed provinces instead of capitals and rich areas. Besides the economic impact on depressed areas, other SD-related parameters like the attachment of young and skilled people to their homeland, the avoidance of uncontrolled migrations from rural to dense urban zones, the growth of new focuses of knowledge independent from the lines of research established in the universities of the capitals, the indirect impact of auxiliary infrastructures and others must be analyzed. Concerning the next implementation of the “International Fusion Materials Irradiation Facility—Demo Oriented Neutron Source” (IFMIF-DONES) project in Granada (Spain), one depressed and tourism-dependent zone, an analysis and comparison with similar infrastructures were done and presented.
Virginia Fernández-Pérez; Antonio Peña-García. The Contribution of Peripheral Large Scientific Infrastructures to Sustainable Development from a Global and Territorial Perspective: The Case of IFMIF-DONES. Sustainability 2021, 13, 454 .
AMA StyleVirginia Fernández-Pérez, Antonio Peña-García. The Contribution of Peripheral Large Scientific Infrastructures to Sustainable Development from a Global and Territorial Perspective: The Case of IFMIF-DONES. Sustainability. 2021; 13 (2):454.
Chicago/Turabian StyleVirginia Fernández-Pérez; Antonio Peña-García. 2021. "The Contribution of Peripheral Large Scientific Infrastructures to Sustainable Development from a Global and Territorial Perspective: The Case of IFMIF-DONES." Sustainability 13, no. 2: 454.
The importance of accurate lighting has been proven to be essential for good performance in all kinds of buildings, where most of the professional activities are carried out. National regulations and international standards dealing with indoor lighting establish the technical requirements of lighting installations to ensure the performance of their users. These requirements deal with illuminance on the working plane, uniformity, glare, color temperature of light and some other parameters. However, regulations and technical documents on indoor lighting are mainly referred to standard conditions that are sometimes far away from the reality. Hence, some installations can fulfill the technical requirements, whilst being uncomfortable for task development, impairing user’s performance and are oversized in terms of energy consumption. This work departs from a field study in highlighting the regulatory limitations in the matter of reflectance, to propose a quasi-Lambertian approach to real conditions in indoor workplaces with a special aim in educative environments. It consists of the introduction of “effective reflectance” coefficients for some key visual tasks and furniture carried out by users in certain typical positions and working planes. Based on this coefficient, it is proposed to implement a simple measurement and luminary programming methodology adapted to each particular workplace, especially in educational centers. The final target is to improve visual performance and save energy.
Antonio Peña-García; Ferdinando Salata. Indoor Lighting Customization Based on Effective Reflectance Coefficients: A Methodology to Optimize Visual Performance and Decrease Consumption in Educative Workplaces. Sustainability 2020, 13, 119 .
AMA StyleAntonio Peña-García, Ferdinando Salata. Indoor Lighting Customization Based on Effective Reflectance Coefficients: A Methodology to Optimize Visual Performance and Decrease Consumption in Educative Workplaces. Sustainability. 2020; 13 (1):119.
Chicago/Turabian StyleAntonio Peña-García; Ferdinando Salata. 2020. "Indoor Lighting Customization Based on Effective Reflectance Coefficients: A Methodology to Optimize Visual Performance and Decrease Consumption in Educative Workplaces." Sustainability 13, no. 1: 119.
This paper presents the first comparative study of its type of the performance of light pipes with different types of apertures: a flat glass versus a bohemian crystal dome. Measurements were taken at 20-minute intervals over a period of one year in the bathrooms of two newly built identical houses of the same orientation located in Manchester, UK. The comparative analysis of the data collected for both light pipes types reveals that the crystal domed aperture consistently outperforms the flat glass one. Furthermore, the difference in the recorded horizontal illuminance is most marked during the winter months and at the end of the one-year experiment, indicating that the crystal dome has better performance for low incident winter light and higher resistance for the long term effect of weathering and pollution. This study provides strong evidence based on long term real measurements. Such evidence informs architects’ decisions when weighing up the aesthetic considerations of a flat glass aperture versus the higher illumination levels afforded by a crystal dome aperture with higher resistance to weathering and pollution.
Magda Sibley; Antonio Peña-García. Flat Glass or Crystal Dome Aperture? A Year-Long Comparative Analysis of the Performance of Light Pipes in Real Residential Settings and Climatic Conditions. Sustainability 2020, 12, 3858 .
AMA StyleMagda Sibley, Antonio Peña-García. Flat Glass or Crystal Dome Aperture? A Year-Long Comparative Analysis of the Performance of Light Pipes in Real Residential Settings and Climatic Conditions. Sustainability. 2020; 12 (9):3858.
Chicago/Turabian StyleMagda Sibley; Antonio Peña-García. 2020. "Flat Glass or Crystal Dome Aperture? A Year-Long Comparative Analysis of the Performance of Light Pipes in Real Residential Settings and Climatic Conditions." Sustainability 12, no. 9: 3858.
In the last decades, lighting has evolved from a branch of engineering ensuring safety and performance in indoor and outdoor installations, to a key discipline interacting with a wide spectrum of fields and having a deep impact on our daily lives. Although this evolution also applies to other areas of knowledge, the special features of lighting make its potential and also its limitations different. It is not the typical field where a well-established mathematical framework allows a departure from well-defined input and identifying clear effects and conclusions. The reason is that lighting is a field dealing with the interaction between a physical phenomenon and a physiological and psychological system, the human being. In addition to the complexity of its basis, the relationship between lighting and sustainability has become stronger in recent years. This relationship is bi-directional in some cases: on one hand, advanced societies require more and more complex lighting installations, which means high energy consumption, use of raw materials, financial costs, manufacturing and maintenance processes, waste and emissions to the atmosphere. On the other hand, good lighting has an impact on issues like productivity, well-being, happiness, disease avoidance, safety, and many other qualitative aspects whose direct or indirect impact on sustainability is remarkable. This work will analyze how lighting can give answers to questions related to sustainability, not only from the classic topics of energy consumption and waste management, but from a wider and global perspective. The results of these works are analyzed, and the basis of the new framework of total lighting, discussed.
Antonio Peña-García; Ferdinando Salata. The Perspective of Total Lighting as a Key Factor to Increase the Sustainability of Strategic Activities. Sustainability 2020, 12, 2751 .
AMA StyleAntonio Peña-García, Ferdinando Salata. The Perspective of Total Lighting as a Key Factor to Increase the Sustainability of Strategic Activities. Sustainability. 2020; 12 (7):2751.
Chicago/Turabian StyleAntonio Peña-García; Ferdinando Salata. 2020. "The Perspective of Total Lighting as a Key Factor to Increase the Sustainability of Strategic Activities." Sustainability 12, no. 7: 2751.
The optimization of the lighting installations in road tunnels has become a matter of the highest concern due to their high consumption in energy, raw materials and financial resources. In addition, they have complex maintenance and high environmental impact due to energy production and manufacturing processes of projectors, wiring and electrical devices. Although the use of solar panels is widely spread in all kinds of infrastructures, they have never been proposed with an intention different from producing clean energy from the solar radiation. In this work, a double-targeted perspective is proposed: the installation of solar panels around the portal gate of tunnels, to contribute to power the tunnel installation (lighting, ventilation, emergency), but mainly to decrease the reflectance of the tunnel surroundings and, hence, the well-known L20, the main contributor to the electrical luminance levels required in road tunnels. The strategy and the measurements in real panels, as well as the savings achieved in one particular model of tunnel (between 18.7% and almost 24%, depending on the use of the generated power), are presented and analyzed in this work.
A. Peña-García; D. Gómez-Lorente. Installation of solar panels in the surroundings of tunnel portals: A double-targeted strategy to decrease lighting requirements and consumption. Tunnelling and Underground Space Technology 2020, 97, 103251 .
AMA StyleA. Peña-García, D. Gómez-Lorente. Installation of solar panels in the surroundings of tunnel portals: A double-targeted strategy to decrease lighting requirements and consumption. Tunnelling and Underground Space Technology. 2020; 97 ():103251.
Chicago/Turabian StyleA. Peña-García; D. Gómez-Lorente. 2020. "Installation of solar panels in the surroundings of tunnel portals: A double-targeted strategy to decrease lighting requirements and consumption." Tunnelling and Underground Space Technology 97, no. : 103251.
Sustainable development has traditionally focused on actions related to the consumption of resources and the waste produced by this consumption
Antonio Peña-García. Towards Total Lighting: Expanding the Frontiers of Sustainable Development. Sustainability 2019, 11, 6943 .
AMA StyleAntonio Peña-García. Towards Total Lighting: Expanding the Frontiers of Sustainable Development. Sustainability. 2019; 11 (24):6943.
Chicago/Turabian StyleAntonio Peña-García. 2019. "Towards Total Lighting: Expanding the Frontiers of Sustainable Development." Sustainability 11, no. 24: 6943.
In this study, the conditions of visual comfort were assessed in an indoor environment intended for students. For this reason, a transversal field survey was carried out in two libraries, one at the Sapienza University of Rome (Italy) and another at the University of Granada (Spain). During the analysis, measurement of lighting engineering variables such as horizontal illuminance, corneal illuminance, and luminance was carried out at the same time. The randomly selected individuals were asked to compile the structured questionnaires voluntarily at both sites. The first part of the questionnaire covered personal information, such as gender, age, eye color, etc. While the latter part evaluated the perception and visual preference of interviewees. In particular, we analyzed the visual perception on the basis of a five-point scale (-2÷+2), where positive and negative values identified visual comfort and discomfort, respectively. Each point was related to both related measured values of the lighting project variables and values of the personal data derived from the questionnaires. The subsequent statistical analysis (carried out through parameters and methodologies such as evaluation of the Variance Inflation Factor, Multicollinearity and Best Subsets Analysis) allowed the development of a new empirical index that is easy to apply, i.e., the Predictive Visual Comfort Index (PVCI). Some of the independent variables included horizontal illuminance, corneal illuminance, and age. In the design phase, once the other variables had been set, it was useful to determine the necessity of corneal illuminance to ensure visual comfort. The influence of each variable on the index and visual comfort was also quantified. Header of solarlits.com
Ferdinando Salata; Iacopo Golasi; Antonio Peña-García; Virgilio Ciancio; Zahra Yousefi. A First Approach to a New Index on Indoor Lighting Comfort Based on Corneal Illuminance. Journal of Daylighting 2019, 6, 124 -130.
AMA StyleFerdinando Salata, Iacopo Golasi, Antonio Peña-García, Virgilio Ciancio, Zahra Yousefi. A First Approach to a New Index on Indoor Lighting Comfort Based on Corneal Illuminance. Journal of Daylighting. 2019; 6 (2):124-130.
Chicago/Turabian StyleFerdinando Salata; Iacopo Golasi; Antonio Peña-García; Virgilio Ciancio; Zahra Yousefi. 2019. "A First Approach to a New Index on Indoor Lighting Comfort Based on Corneal Illuminance." Journal of Daylighting 6, no. 2: 124-130.
The introduction of artificial lighting has dramatically transformed nighttime activities, becoming a very positive but also disruptive factor that must be optimized and adapted according to the guidelines of sustainable policies. In this framework, night markets in Thailand are definitely popular destinations among locals and tourists that are found in every town and city in the whole country, being the source of livelihoods for many people. It is well-known that shops in night markets frequently use colorful light sources, emitting high levels of illumination to attract customers. Since previous research has shown environmental risks of inappropriate lighting on human health and well-being, as well as on ecosystems, excessive lighting in night markets could have adverse effects on vendors’ health if they are exposed to high illumination levels during long hours every night. This is a risk for people, but also for their attachment to their lands, traditions, culture, and way of life. This study was designed to explore whether excessive illumination of night markets has impacts on vendors’ health and well-being. The research was conducted through an empirical study in a night market in the center of Surin province (Thailand), using observations and a questionnaire survey of 205 vendors and clients (non-vendors). The results show that night markets’ vendors were more likely to suffer from eye- and sleep-related problems than non-vendors. Women were affected more than men. The results also revealed that the majority of both vendors and non-vendors tended to have awareness about excessive lighting impacts on human health, with more vendors tending to agree with the fact than non-vendors. Although night markets’ are their main source of income, the majority of vendors were more unlikely to agree about the contribution of night markets to local livelihoods and development than non-vendors. These findings have implications for the Thai Authority in setting up appropriate lighting policies and regulations for night markets. The target is not only energy savings, but also to protect the public’s health, culture, and traditional livelihoods, in a way that supports sustainable development.
Thi Phuoc Lai Nguyen; Antonio Peña-García. Users’ Awareness, Attitudes, and Perceptions of Health Risks Associated with Excessive Lighting in Night Markets: Policy Implications for Sustainable Development. Sustainability 2019, 11, 6091 .
AMA StyleThi Phuoc Lai Nguyen, Antonio Peña-García. Users’ Awareness, Attitudes, and Perceptions of Health Risks Associated with Excessive Lighting in Night Markets: Policy Implications for Sustainable Development. Sustainability. 2019; 11 (21):6091.
Chicago/Turabian StyleThi Phuoc Lai Nguyen; Antonio Peña-García. 2019. "Users’ Awareness, Attitudes, and Perceptions of Health Risks Associated with Excessive Lighting in Night Markets: Policy Implications for Sustainable Development." Sustainability 11, no. 21: 6091.
The increasing improvement of tunnelling technology allows more and more complex tunnels every day. Thus, together with the classical road tunnels through mountains, with lengths generally under two or three of kilometers, longer and longer underground roads under rivers and seas, as well as tunnels in geomorphically complex terrains, are being opened continuously. Besides the geotechnical difficulty of these infrastructures, the consumption of their lighting installations in terms of energy and raw materials due to the high number of projectors, total cost and maintenance, are a major concern between public administrations in many countries. In this scenario, there is an especially critical kind of tunnels due to their high energy consumption: the groups of tunnels under very near mountains, that is grouped tunnels separated by opencast roads with lengths about few hundred meters. Due to the special characteristics of the human visual adaptation, whenever one driver leaves one tunnel during daytime (when most displacements take place), his visual system loses adaptation to darker environments, and needs a new threshold zone with high luminance levels when entering a new tunnel even if it begins in just a few meters. This converts grouped tunnels in paradoxical infrastructures: the cost of their lighting installations is much higher than if there were only one tunnel going under the whole mountains chain. In this work, it is proposed an optical coupling of grouped tunnels with translucent red structures to avoid the loss of visual adaptation to weakly illuminated environments and the consequent high demands of lighting levels. The savings with of proposal are presented and compared with the current situation in the groups of tunnels around the world.
A. Peña-García. Optical coupling of grouped tunnels to decrease the energy and materials consumption of their lighting installations. Tunnelling and Underground Space Technology 2019, 91, 103007 .
AMA StyleA. Peña-García. Optical coupling of grouped tunnels to decrease the energy and materials consumption of their lighting installations. Tunnelling and Underground Space Technology. 2019; 91 ():103007.
Chicago/Turabian StyleA. Peña-García. 2019. "Optical coupling of grouped tunnels to decrease the energy and materials consumption of their lighting installations." Tunnelling and Underground Space Technology 91, no. : 103007.
The high energy consumption of the lighting installations in highway tunnels has become a hot topic in the last few years due to the high figures in terms of money, consumed energy, use of raw materials, emissions of greenhouse gases due to the remarkable number of manufactured elements, and maintenance, among others. In spite of the different strategies proposed up to date and their savings, the potential benefits of decreasing the maximum speed allowed in tunnels have not been considered in depth as a complementary measure yet. In this work, the impact of such a decrease in terms of energy consumption, number projectors, carbon dioxide (CO2) emissions, and yearly costs in energy is analyzed and discussed. The results strongly suggest the convenience of introducing maximum speed reduction in traffic regulations which, in addition, could create positive synergies with traffic safety.
Antonio Peña-García; Ferdinando Salata; Iacopo Golasi. Decrease of the Maximum Speed in Highway Tunnels as a Measure to Foster Energy Savings and Sustainability. Energies 2019, 12, 685 .
AMA StyleAntonio Peña-García, Ferdinando Salata, Iacopo Golasi. Decrease of the Maximum Speed in Highway Tunnels as a Measure to Foster Energy Savings and Sustainability. Energies. 2019; 12 (4):685.
Chicago/Turabian StyleAntonio Peña-García; Ferdinando Salata; Iacopo Golasi. 2019. "Decrease of the Maximum Speed in Highway Tunnels as a Measure to Foster Energy Savings and Sustainability." Energies 12, no. 4: 685.
The broad implementation of light emitting diode (LED) light sources in public lighting has become a revolution in recent years. Their low power consumption and good performance (extremely low onset time, long lifetime, high efficacy) make LEDs an optimal solution in most outdoor applications. In addition, the white light emitted by the vast majority of LEDs used in public lighting and their good color rendering improve well-being, comfort, and safety in cities, especially in commercial zones and urban centers. However, regulations on light pollution that have been developed in some countries in parallel to the introduction of LED lighting impose strong constraints to white light emission, which is present due to the higher Rayleigh scattering of short wavelengths. These regulations request filtering blue wavelengths in some protected areas and thus limit the projects to high- or low-pressure sodium sources or amber LEDs. In this work, the pros and cons of white and amber LED lighting in rural areas are analyzed and compared through simulations made on a typical rural lighting situation and considerations based on efficiency, visual performance, nonvisual effects, and light pollution. The most important conclusion is that Rayleigh scattering seems to prevail in the current considerations on light pollution, whereas other important aspects affecting safety and sustainability are are not considered. Accurate designs can decrease light pollution without constraints against white LEDs. The objective of this work is to provide evidence leading to consider light pollution from a more general perspective in the benefit of humans and the environment.
Antonio Peña-García; Adam Sędziwy. Optimizing Lighting of Rural Roads and Protected Areas with White Light: A Compromise among Light Pollution, Energy Savings, and Visibility. LEUKOS 2019, 16, 147 -156.
AMA StyleAntonio Peña-García, Adam Sędziwy. Optimizing Lighting of Rural Roads and Protected Areas with White Light: A Compromise among Light Pollution, Energy Savings, and Visibility. LEUKOS. 2019; 16 (2):147-156.
Chicago/Turabian StyleAntonio Peña-García; Adam Sędziwy. 2019. "Optimizing Lighting of Rural Roads and Protected Areas with White Light: A Compromise among Light Pollution, Energy Savings, and Visibility." LEUKOS 16, no. 2: 147-156.
This paper examines how the lighting colour temperature affects indoor thermal comfort. A test room with three separate environments was set and, in each one of them, a lamp with a different colour temperature was positioned to evaluate the influence of a cold, neutral and warm light. The colour temperatures of the used lamps were 11,530 K, 4,000 K and 1,772 K respectively. During each test, while complying with the EN 12464-1, a lighting level of 500 lux and an uniformity coefficient higher than or equal to 0.7 were maintained. With an air temperature of about 22°C, 42 people were interviewed and filled a questionnaire structured according to the ISO 10551 to judge the resulting thermal comfort. The study reported a certain influence of the lighting colour temperature on people's thermal perception which was only lower than the one related to the gender. With respect to the ASHRAE 7-point scale, being exposed to the different types of light led to a decrease (0.44 units under cold light) in the mean value of the votes given by the interviewees to judge their thermal perception. Such condition gives the possibility to increase, without varying the thermal perception of the subjects, the air temperature of 1.25°C, 0.46°C and 0.23°C with cold, neutral and warm light respectively. Finally a cross tabulation analysis was performed to compare the votes of the participants before and after they were exposed to the different lights with those predicted by the Predicted Mean Vote (PMV).
Iacopo Golasi; Ferdinando Salata; Emanuele De Lieto Vollaro; Antonio Peña-García. Influence of lighting colour temperature on indoor thermal perception: A strategy to save energy from the HVAC installations. Energy and Buildings 2019, 185, 112 -122.
AMA StyleIacopo Golasi, Ferdinando Salata, Emanuele De Lieto Vollaro, Antonio Peña-García. Influence of lighting colour temperature on indoor thermal perception: A strategy to save energy from the HVAC installations. Energy and Buildings. 2019; 185 ():112-122.
Chicago/Turabian StyleIacopo Golasi; Ferdinando Salata; Emanuele De Lieto Vollaro; Antonio Peña-García. 2019. "Influence of lighting colour temperature on indoor thermal perception: A strategy to save energy from the HVAC installations." Energy and Buildings 185, no. : 112-122.
Tunnel lighting installations function 24 h a day, 365 days a year. These infrastructures have increased exponentially and now connect quite distant locations, even on different continents. This has led European administrations and international regulatory bodies to establish regulations for tunnel safety with the lowest environmental impact. However, until now, these regulations have almost exclusively focused on traffic safety, and relegated sustainability to the background. Even though they recognize the need to reduce energy consumption, they do not propose any tools for doing so. Given the impact of these installations and the lack of a specific regulatory framework, Asian countries will soon be forced either to update previous standards for tunnel lighting or elaborate new ones. A better understanding of the weaknesses of European regulations combined with a willingness to embrace innovation could position Asia as a world leader in the regulation of more sustainable road tunnels. The objective of this research was to improve the sustainability of tunnel lighting installations through new regulations or amendments to existing ones, without impairing the mental well-being of users, who could potentially be affected by energy-saving measures. Accordingly, this paper presents and analyzes a broad proposal for formulating tunnel lighting regulations. The originality of this proposal lies in the fact that it integrates road safety, lower environmental impact, and user well-being. Furthermore, it is expected to broaden the perspective of regulatory bodies and public administrations with regard to tunnel installations, which would ultimately enhance their sustainability.
Antonio Peña-García; Thi Phuoc Lai Nguyen. A Global Perspective for Sustainable Highway Tunnel Lighting Regulations: Greater Road Safety with a Lower Environmental Impact. International Journal of Environmental Research and Public Health 2018, 15, 2658 .
AMA StyleAntonio Peña-García, Thi Phuoc Lai Nguyen. A Global Perspective for Sustainable Highway Tunnel Lighting Regulations: Greater Road Safety with a Lower Environmental Impact. International Journal of Environmental Research and Public Health. 2018; 15 (12):2658.
Chicago/Turabian StyleAntonio Peña-García; Thi Phuoc Lai Nguyen. 2018. "A Global Perspective for Sustainable Highway Tunnel Lighting Regulations: Greater Road Safety with a Lower Environmental Impact." International Journal of Environmental Research and Public Health 15, no. 12: 2658.
Science and technology progress with remarkable velocity.
Antonio Peña-García. Sustainability as the Key Framework of a Total Lighting. Sustainability 2018, 10, 4412 .
AMA StyleAntonio Peña-García. Sustainability as the Key Framework of a Total Lighting. Sustainability. 2018; 10 (12):4412.
Chicago/Turabian StyleAntonio Peña-García. 2018. "Sustainability as the Key Framework of a Total Lighting." Sustainability 10, no. 12: 4412.
Antonio Manuel Peña García. The impact of lighting on drivers well-being and safety in very long underground roads: New challenges for new infrastructures. Tunnelling and Underground Space Technology 2018, 80, 38 -43.
AMA StyleAntonio Manuel Peña García. The impact of lighting on drivers well-being and safety in very long underground roads: New challenges for new infrastructures. Tunnelling and Underground Space Technology. 2018; 80 ():38-43.
Chicago/Turabian StyleAntonio Manuel Peña García. 2018. "The impact of lighting on drivers well-being and safety in very long underground roads: New challenges for new infrastructures." Tunnelling and Underground Space Technology 80, no. : 38-43.
T. García-Trenas; J.C. Lopez; A. Peña-García. Proposal to forest Alpine tunnels surroundings to enhance energy savings from the lighting installations. Towards a standard procedure. Tunnelling and Underground Space Technology 2018, 78, 1 -7.
AMA StyleT. García-Trenas, J.C. Lopez, A. Peña-García. Proposal to forest Alpine tunnels surroundings to enhance energy savings from the lighting installations. Towards a standard procedure. Tunnelling and Underground Space Technology. 2018; 78 ():1-7.
Chicago/Turabian StyleT. García-Trenas; J.C. Lopez; A. Peña-García. 2018. "Proposal to forest Alpine tunnels surroundings to enhance energy savings from the lighting installations. Towards a standard procedure." Tunnelling and Underground Space Technology 78, no. : 1-7.
Strategies to make the lighting installations of road tunnels more sustainable constitute a challenging line of research due to the difficulty of decreasing consumption and use of raw materials without impairing traffic safety. The first challenge when designing or optimizing these installations arises at the tunnel access, where the lighting requirements of the whole infrastructure must be determined as a function of several characteristics of the tunnel and its surroundings. This is the determination of the L20 luminance, that nowadays is still controversial due to the important differences between the methods established by the standards and regulations and the technical difficulties to implement them. In this work, a simple and safe method to easily calculate the L20 luminance in tunnels already open to traffic without expensive instruments nor risks for operators is presented. The equations to determine the radius of the L20 cone basis are developed and the potential errors analyzed. Some examples illustrate the methodology and validate it.
J.C. Lopez; A. Peña-García. Determination of lighting and energy demands of road tunnels using vehicle based photographs of the portal gates: An accessible and safe tool for tunnel renewal and maintenance. Tunnelling and Underground Space Technology 2018, 78, 8 -15.
AMA StyleJ.C. Lopez, A. Peña-García. Determination of lighting and energy demands of road tunnels using vehicle based photographs of the portal gates: An accessible and safe tool for tunnel renewal and maintenance. Tunnelling and Underground Space Technology. 2018; 78 ():8-15.
Chicago/Turabian StyleJ.C. Lopez; A. Peña-García. 2018. "Determination of lighting and energy demands of road tunnels using vehicle based photographs of the portal gates: An accessible and safe tool for tunnel renewal and maintenance." Tunnelling and Underground Space Technology 78, no. : 8-15.
The impact of public lighting on consumed energy, financial cost, use of raw materials, and the environment is a major concern nowadays. The high amounts of energy needed to satisfy the increasing demands of cities around the world has led researchers to look for alternatives to classical fossil sources, with low implementation in public lighting up to date. In this context, circular economy (CE) proposes a new perspective of engineering based on smart design for the future life of products where even wastes have an added value as technological nutrients for other applications. A convergent consideration of CE and the urgent necessity of more sustainable public lighting leads to this proposal. The ad hoc use of a local biomass plant for powering the public lighting of one small city is considered, and important conclusions reinforcing the link between lighting and CE are presented.
Valentín Molina-Moreno; Pedro Núñez-Cacho Utrilla; Francisco J. Cortés-García; Antonio Peña-García. The Use of Led Technology and Biomass to Power Public Lighting in a Local Context: The Case of Baeza (Spain). Energies 2018, 11, 1783 .
AMA StyleValentín Molina-Moreno, Pedro Núñez-Cacho Utrilla, Francisco J. Cortés-García, Antonio Peña-García. The Use of Led Technology and Biomass to Power Public Lighting in a Local Context: The Case of Baeza (Spain). Energies. 2018; 11 (7):1783.
Chicago/Turabian StyleValentín Molina-Moreno; Pedro Núñez-Cacho Utrilla; Francisco J. Cortés-García; Antonio Peña-García. 2018. "The Use of Led Technology and Biomass to Power Public Lighting in a Local Context: The Case of Baeza (Spain)." Energies 11, no. 7: 1783.
The increasing demands of infrastructures in terms of energy consumption, raw material demand, greenhouse gas emissions, waste management, treatment of components after their lifetime period, and financial costs are nowadays a serious threat for sustainability. Given that the resources are limited, it is difficult to ensure an accurate level of well-being for future generations. For this reason, new perspectives in design, production and consumption are necessary. In this work, the principles of circular economy are applied to concrete branches of engineering. Departing from a design orientated to new uses after life period of infrastructures, a circular economy-aimed engineering makes possible the connection and mutual profit of such different branches like waste management and tunnel lighting. The benefits in environmental and financial terms are a strong argument in favor of a stronger link between engineering and circular economy.
Valentín Molina-Moreno; Juan Carlos Leyva-Díaz; Jorge Antonio Sanchez-Molina; Antonio Peña-García. Proposal to Foster Sustainability through Circular Economy-Based Engineering: A Profitable Chain from Waste Management to Tunnel Lighting. Sustainability 2017, 9, 2229 .
AMA StyleValentín Molina-Moreno, Juan Carlos Leyva-Díaz, Jorge Antonio Sanchez-Molina, Antonio Peña-García. Proposal to Foster Sustainability through Circular Economy-Based Engineering: A Profitable Chain from Waste Management to Tunnel Lighting. Sustainability. 2017; 9 (12):2229.
Chicago/Turabian StyleValentín Molina-Moreno; Juan Carlos Leyva-Díaz; Jorge Antonio Sanchez-Molina; Antonio Peña-García. 2017. "Proposal to Foster Sustainability through Circular Economy-Based Engineering: A Profitable Chain from Waste Management to Tunnel Lighting." Sustainability 9, no. 12: 2229.