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1
Content available Digital luminance photometry in the context of the human visual system
Słomiński Sebastian
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2022
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Vol. 70, nr 5
art. no. e143103
EN
Almost all solutions in modern lighting systems are based on LED technology. Luminance and obvious ease of control are the key characteristics of this light source. At the same time, luminances at the level of 108 cd/m2 are a significant advantage of LED in design applications, where high luminous intensity amplification is important. However, in general and in road lighting applications, LED luminaires represent a source of potential discomfort glare. Unfortunately, lighting technology’s metrology lags behind LED parameter development and optimization. The results of luminance measurements of the same luminaires, made with a luminance camera and meters with a measuring field, differ. The differences even appear for the same imaging luminance measuring devices with different lenses. This article presents the results of experiments and detailed analyzes related to modern digital luminance photometry based on the use of digital image sensors. Luminance tests were conducted on multi-source research models of luminaires. Traditional luminance measuring equipment with a measuring field was used in the experiment. The research was also supplemented with the measurements made using CCD/CMOS luminance cameras with selected components where the angular field of view of each pixel was a 0.45 min arc corresponding to the highest average human sight parameters. The results confirm that the average luminance value for multi-source luminaires depends on the measurement system configuration. It has been proposed to standardize the angular field of view parameters of all measurement systems, where the measurement aims to obtain a value that directly relates to human visual impressions (e.g. glare).
2
Content available Analysis of residential lighting in Poland: results from a winter term survey
Pracki Piotr, Aslanoglu Rengin, Kazak Jan K., Ulusoy Begüm, Yekanialibeiglou Sepideh
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2022
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Vol. 70, nr 6
art. no. e143107
EN
In 2020, an international project on residential lighting started and was implemented in four countries (Poland, Sweden, UK and Turkey). This article presents the results of a survey carried out in Poland, in the winter term between November 2020 and January 2021. A total of 125 Polish residents (59 women, 65 men, one person did not wish to specify gender) participated in the survey. A variety of data was collected on the respondents and their assessments as well as on their satisfaction with day- and artificial lighting in residential living spaces. The results from questionnaires were analyzed with STATISTICA 13.3. Descriptive statistics and Spearman rank order correlations were adopted to identify the light-related aspects, lighting patterns, and respondents’ perception of day- and artificial lighting conditions in living areas. The results revealed that satisfaction with daylighting in the living area, both in summer and winter, was significantly correlated with daylighting level, daylighting uniformity, sunlight exposure and view-out. The results also revealed that satisfaction with artificial lighting was significantly correlated with artificial lighting level, artificial lighting uniformity and color rendering. The results provide valuable information on lighting and factors that influence the luminous environment in residential living spaces.
3
Content available Floodlighting luminaire for homogeneous illumination
Kubiak K.
Challenges of Modern Technology
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2015
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Vol. 6, no. 1
6--10
EN
The main subject of the research is a proposition of a luminaire optical system which allows us to illuminate building facades in a more uniform way than it is today in the case when luminaire location is close and asymmetric to the illuminated object. Firstly, the paper introduces and explains the term of floodlighting and presents luminaires that are used in floodlighting. The author casts doubt on floodlighting luminaires quality especially related to luminous intensity distributions. Certain problems arising from illuminating objects by using improper luminaires are presented and discussed. As an attempt to improve the situation, the author shows his innovative concept of the luminaire optical system. Finally, to verify the proposed luminaire optics, the author has made a comparison of his conception with two other luminaires.
4
O problemie energochłonności oświetlenia w logistycznych systemach magazynowych
Kwaśniowski S., Zając P.
Logistyka
|
2014
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nr 6
6479-6485
PL
W artykule przedstawiono problem energochłonności logistycznych systemów magazynowych. Uwzględniono w bilansie energochłonności udział oświetlenia magazynu. Okazuje się, że stanowi on dość duży udział w całości, bo sięga nawet 30-40%. Wykonano krótką charakterystykę możliwych do stosowania w magazynach technologii oświetleniowych. Zaproponowano rozwiązania poprawiające oświetlenie, bez wykorzystywania energii elektrycznej. Dla przeprowadzonej rozprawy wykonano testowe obliczenia wg podanego algorytmu.
EN
The article presents the problem of energy consumption in logistics storage systems. Taken into account in the balance of energy consumption of the lighting part warehouse. It turns out that it is a fairly large share of the total, as high as 30-40%. Made a brief description of possible use in warehouses lighting technologies. Proposed solutions to improve lighting without using electricity. For the hearing conducted test calculations made by the specified algorithm. The calculation results give strong position in the rankings University of Technology.
5
Kolor, ruch, energia – szkło z diodami LED
Muszyńska-Łanowy M.
Świat Szkła
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2013
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R. 18, nr 1
13-17
6
Całkowite koszty posiadania, TCO w oświetleniu chłodni i mroźni
Leniarski L.
Chłodnictwo : organ Naczelnej Organizacji Technicznej
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2013
|
R. 48, nr 1
40-42
7
Oświetlenie chłodni i mroźni - Analiza opłacalności ekonomicznej TCO
Leniarski L.
Chłodnictwo i Klimatyzacja
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2013
|
nr 1-2
60-65
PL
Analiza ekonomiczna jest metodą badania procesów gospodarczych. Polega na wykrywaniu związków przyczynowych między różnymi procesami gospodarczymi oraz identyfikacji przyczyn zmian zachodzących w gospodarce.
8
Targi LivinLuce - Mediolan 6-10 luty 2007. Nagrodzone innowacje i projekty w elektrotechnice oświetleniowej
Turlej Z.
Nowa Elektrotechnika
|
2007
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nr 4 (32)
34--38
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