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Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021)

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A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 14361

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Special Issue Editors

Prof. Dr. Piotr Pracki

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Guest Editor

Electrical Power Engineering Institute, Lighting Technology Division, Warsaw University of Technology, Warsaw, Poland
Interests: lighting technology; interior lighting; built environment; energy efficiency; lighting impact on people and the environment; lighting solutions; lighting simulations

Prof. Dr. Agnieszka Wolska

E-Mail Website
Guest Editor

Central Institute for Labour Protection – National Research Institute, Department of Safety Engineering, Laboratory of Optical Radiation, Warsaw, Poland
Interests: lighting technology; lighting solutions; lighting influence on well-being; visual fatigue and alertness; glare assessment; optical radiation hazard evaluation; measurement

Prof. Dr. Dariusz Sawicki

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Guest Editor

Institute of Theory of Electrical Engineering, Measurement and Information Systems, Measurement and Information Systems Division, Warsaw University of Technology, Warsaw, Poland
Interests: lighting technology; glare assessment; ray tracing; visual perception; measurement and simulation; lighting impact on people; human computer interaction; computer graphics

Special Issue Information

Dear Colleagues,

Lighting technologies have been highly developed over the last decade, rapidly resulting in substantial improvement of energy efficiency of lighting solutions. The new technologies that have emerged (LED sources, dedicated optical and control systems) are now commonly used in interior and exterior lighting and in other applications. Research on new devices and solutions in terms of the effectiveness of their use for lighting prevails in contemporary illumination engineering nowadays. This is the focus of the series of conferences on lighting technology and the associated forum, dedicated to the exchange of knowledge and networking. The XXIXth conference (KKO2021) will be held in Warsaw, Poland, on 17-18 June 2021. Topics of interest include the following:

New solutions of LED sources, luminaires, and control systems
New solutions for interior, road, exterior lighting, and floodlighting
Laboratory and field measurements in lighting
Visual and non-visual impact of lighting
Energy efficiency and economics of lighting solutions
Lighting in smart cities and light pollution
Integrating lighting in the IoT and multimedia

Following the event, in collaboration with Energies (MDPI), up to 30 high-quality papers from the conference will be invited to submit follow-up articles extending the presented research in a dedicated Special Issue.

Prof. Dr. Piotr Pracki
Prof. Dr. Agnieszka Wolska
Prof. Dr. Dariusz Sawicki
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

lighting technology
lighting systems and solutions
lighting energy efficiency
lighting impact on people and the environment
lighting measurements
lighting and architecture
lighting, IoT, and multimedia

Published Papers (6 papers)

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Research

18 pages, 3146 KiB

Open AccessArticle

Glare at Outdoor Workplaces—An Underestimated Factor of Occupational Risk

by Dariusz Sawicki and Agnieszka Wolska

Energies 2022, 15(2), 472; https://doi.org/10.3390/en15020472 - 10 Jan 2022

Cited by 2 | Viewed by 1668

Abstract

Lighting is an integral aspect of electrical engineering and public safety, as buildings, public areas—both indoors and outdoors—or any type of workplace must be illuminated in a way to prevent accidents. The sensation of glare, in particular, plays an important role in visual comfort and consequently influences occupational risk. The aim of this article is to draw attention to the problem of glare at outdoor workplaces. We have carried out an assessment of glare at outdoor workplaces in 19 different industrial plants. At 20 task areas (21.5% of the 93 examined) the determined degree of glare exceeded the limits specified in the standard. In eight categories of industrial plants (66.7% of 12 examined) defined in the standard, there was at least one task area where the requirements of the standard in terms of glare limitation were not met. The presented analysis leaves no doubt about drawing the conclusion that glare at outdoor workplaces is mostly underestimated or simply neglected, although it could cause high risk in workplaces. Full article

(This article belongs to the Special Issue Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021))

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18 pages, 2651 KiB

Open AccessArticle

Evaluation of Changes in Psychophysical Performance during the Afternoon Drop off in Work Capacity after the Exposure to Specific Color of Light

by Agnieszka Wolska, Andrzej Najmiec and Dariusz Sawicki

Energies 2022, 15(1), 350; https://doi.org/10.3390/en15010350 - 4 Jan 2022

Cited by 1 | Viewed by 1465

Abstract

The aim of the study was to define whether changes in psychophysical performance will occur after the exposure to light of a specific color during the early afternoon decrease in work capacity. The evaluation of psychophysical performance was carried out on a group of 50 subjects using the following tools: Grandjean Scale, Attention and Perceptiveness Test (TUS), and GONOGO test. The study was performed for exposure to reference light, white light enriched by blue light (WBL), and white light enriched by red light (WRL). The analysis of psychophysical performance results indicates the positive influence of a specific color of light on different factors of psychophysical performance. Exposure to WRL among participants from the 22–34 subgroup contributed to an increase in the number of correct tests and the speed of work as well as a decrease in the number of mistakes, less boredom, and higher performance. The exposure to WBL among participants from the 55+ subgroup decreased the number of mistakes and reduced the response time. The results are consistent with the outcomes of previous research carried out on an international level, confirming that blue and red light are effective at increasing psychophysical performance. It was demonstrated that the psychophysical performance increases also when blue or red light is a significant component in the spectrum of white light. Full article

(This article belongs to the Special Issue Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021))

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8 pages, 4468 KiB

Open AccessArticle

Analysis of LLL System Properties for Different Excitation Parameters

by Krzysztof Wandachowicz, Małgorzata Zalesińska and Przemysław Otomański

Energies 2021, 14(22), 7723; https://doi.org/10.3390/en14227723 - 18 Nov 2021

Viewed by 1061

Abstract

Photoluminescent strips forming a Low Location Lighting (LLL) system are the primary method for marking escape routes on passenger ships. The LLL system can be built as a self-luminous system (powered by electricity) or made as a series of strips made of photoluminescent materials, which glow and indicate the escape route after the loss of basic and emergency lighting. To ensure correct visual guidance, these strips must be installed at specific locations in the passageways and achieve appropriate photometric parameters after a certain time from their activation. The properties of the LLL system depend on the type of luminescent material used, the excitation source, and the exposure parameters. This paper presents the results of laboratory tests on two types of photoluminescent materials used for the construction of LLL systems. We recorded the change in luminance after the loss of excitation and measured the luminance values obtained 10 and 60 min after the loss of excitation under exposure to light sources commonly used for interior lighting on passenger ships. It turns out that replacing fluorescent lamps with LED lamps can reduce the luminance of the LLL system. Full article

(This article belongs to the Special Issue Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021))

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9 pages, 1259 KiB

Open AccessArticle

Advanced Controlled Road Lighting System Concurrent with Users

by Sławomir Zalewski

Energies 2021, 14(22), 7454; https://doi.org/10.3390/en14227454 - 9 Nov 2021

Cited by 2 | Viewed by 1408

Abstract

The operation of a concurrent lighting system using LED luminaires is based on the detection of individual road users, the recognition of their lighting needs and adjusting the operating state of the individual lighting devices that make up the system to the expectations of each user. The luminaire’s lighting divided into three independently controlled parts allows reducing electrical energy consumption up to 33% in comparison to a conventional concurrent road lighting system. Full article

(This article belongs to the Special Issue Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021))

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23 pages, 98732 KiB

Open AccessArticle

On the Quality of Street Lighting in Pedestrian Crossings

by Malgorzata Zalesinska and Krzysztof Wandachowicz

Energies 2021, 14(21), 7349; https://doi.org/10.3390/en14217349 - 4 Nov 2021

Cited by 8 | Viewed by 5425

Abstract

The pedestrian is the least protected road user. A large number of accidents involving pedestrians occur at pedestrian crossings. Bad lighting or a complete lack of it is one of the causes of accidents in these places. Currently, there are no uniform requirements in Europe for the lighting of pedestrian crossings. Each country is trying to create its system of requirements and assessment of lighting of pedestrian crossings. Measurement procedures and required lighting parameter values often vary significantly across countries. This paper discusses the results of measurements carried out at selected pedestrian crossings using two different measurement grids. The lighting quality at the tested crossings has been assessed based on the lighting requirements in force in two EU countries. In addition, we present the results for the illuminance contrast of a measurement board, representing the silhouette of a pedestrian on a crossing, with the background. Based on the determined contrast, we attempted to verify the lighting conditions using an evaluation system described in the literature, which employs fuzzy logic algorithms. Full article

(This article belongs to the Special Issue Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021))

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24 pages, 15649 KiB

Open AccessArticle

Selected Issues on Material Properties of Objects in Computer Simulations of Floodlighting

by Rafał Krupiński, Henryk Wachta, Wojciech Maciej Stabryła and Cedric Büchner

Energies 2021, 14(17), 5448; https://doi.org/10.3390/en14175448 - 1 Sep 2021

Cited by 4 | Viewed by 2011

Abstract

This paper addresses issues with computer simulation involved in designing illumination for architectural structures. In particular, the reflectance and transmittance of materials were studied with respect to their influence on luminance values, thus directly the power levels for luminaires applied under particular projects. Raster images derived from digitally processed daytime pictures were used to precisely define material properties. Bitmaps were tested with regard to measuring and editing materials with a widely used graphic application. A real architectural object, the Basilica of the Dormition in Jerusalem, served as the test object. A floodlighting design was performed following a complete analysis of all electrical and photometric parameters. Luminance distributions were analysed comprehensively. Hence, the data allowed for an assessment of the lighting design compliance with guidance given by International Commission on Illumination (CIE) for floodlighting objects and its required standards. The floodlighting utilization factor of the lighting solution developed was also verified, as it is the input parameter for evaluating not only the energy efficiency for the installed lighting system, but also the impact it has on the surroundings, in this case, the project that is to be implemented. Full article

(This article belongs to the Special Issue Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021))

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Selected Papers from the XXIXth Conference on Lighting Technology (KKO2021)

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