Influence of Replacement of Sodium Lamps in Park Luminaires with LED Sources of Different Closest Color Temperature on the Effect of Light Pollution and Energy Efficiency

Tabaka, P.

doi:10.3390/en14196383

Cited by 9 publications

(4 citation statements)

References 63 publications

(73 reference statements)

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“…The luminous flux not reaching the illuminated facade affects the brightening of the night sky, referred to as sky glow. It creates the light pollution phenomenon that has recently been commonly discussed in the literature in terms of its causes [45][46][47][48][49], effects [50][51][52], design recommendations [53][54][55][56], standard requirements [57][58][59], as well as measurements [60][61][62]. This phenomenon of light pollution has a harmful impact on the whole environment.…”

Section: The General Aspects Of Architectural Lighting Requirementsmentioning

confidence: 99%

Quantitative Assessment of Architectural Lighting Designs

Skarżyński

Żagan

2022

Sustainability

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There has recently been a great interest in the outdoor lighting that is energy-efficient and does not intensify a light pollution phenomenon. In architectural lighting, these demands are difficult to implement and rarely analyzed. However, it is possible to introduce and use certain parameters based on the utilization factor for the quantitative assessment of floodlighting design in terms of both light pollution and energy efficiency. This paper presents the definitions of new parameters and the results of their calculations for several typical architectural objects. Different lighting concepts were created for each object together with appropriate computer simulations. The research shows a high potential for usefulness of new parameters in the design process. The floodlighting utilization factor is characterized by relatively low values of around 35%. In addition, obtaining the recommended lighting power density value below 2.2 W/m2 does not sufficiently determine the correctness of the design implementation considering the natural environment. This determines a great potential for opportunities to improve the implemented designs and provides a basis for redefining the currently used approach in architectural lighting. In order to create high-quality, sustainable solutions, all quantitative parameters should be analyzed simultaneously in addition to the esthetic visual effect issue.

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Section: The General Aspects Of Architectural Lighting Requirementsmentioning

confidence: 99%

Quantitative Assessment of Architectural Lighting Designs

Skarżyński

Żagan

2022

Sustainability

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“…As the analysis of the circuits shows, in most of the drivers listed above, there is no compensation for changing the light parameters of LEDs or LED matrices (light flux) when the temperature regime of their operation changes, although this effect is very significant [9,10]. The temperature dependence of the intensity of LED radiation is most significant in cases where LEDs are operated in outdoor conditions environment.…”

Section: Introductionmentioning

confidence: 99%

Operation of Electronic Devices for Controlling Led Light Sources When the Environment Temperature Changes

Belyakova,

Piscio,

Maruschak

et al. 2023

ASI

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Ambient temperature significantly affects the electrical and light parameters of LEDs, such as forward and reverse current, voltage drop LEDs and luminous flux. With an increase in temperature, the decrease in the intensity of LED radiation is explained by physical processes, including the phenomena of non-radiative recombination due to impurity levels, recombination on the surface, losses carriers in the barrier layers of heterostructures, etc. The increase in temperature is also significantly reduces the useful life of LEDs and the LED device in general. Drivers, which allows to stabilize the operating current with a change in the supply voltage of the device and, as the result is light flux. But in LEDs of various types, current stabilization does not lead to the stabilization of the light flux when the temperature regime of their operation changes. When changing ambient temperature in the range of +40…+60 °C, the luminous flux of LEDs is significant decreases even in the case when their current is kept constant, as we can see from documentation for most of LED types. An article analyzes the effect of temperature on electrical and light parameters LEDs with different types of drivers as part of LED lighting devices, such as LED lamps and LED spotlights, in order to offer possible constructive solutions for partial reduction or elimination of the decline problem luminous flux of LED devices under conditions of their operation at high temperatures.

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“…Several free or commercial lighting design software are available on the market, including DIALux and RELUX [22,23]. Several studies, in their research, have used DIALux lighting design software or the RELUX lighting design tool to optimise workplace lighting, and calculate lighting parameters [24][25][26][27][28][29]. In our study, we decided to use both software to compare the benefits they provide.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Artificial Lighting Using Leading Software to Evaluate Lighting Conditions in the Absence of Daylight in a University Classroom

et al. 2022

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This paper focuses on evaluating lighting conditions in a university classroom used for day and evening classes. The evaluation was made with regard to the legislation requirements for evening classes and adult education. The practical part of this paper consists of illumination measuring and simulation. A RadioLux 111 luxmeter was used to measure the illumination during the absence of daylight, which often occurs, especially in winter during the later hours. The simulation was performed in the DIALux EVO 10.1 and ReluxDesktop lighting design software. In both software, a 3D model of the classroom was created to represent its actual state. The results of the measurement and both simulations were compared with each other and with the requirements of the legislation. The requirements for evening classes have not been met in all three cases; therefore, the lighting simulation tools were used to improve the lighting system design concerning its energy efficiency and costs. This paper points out the benefits of using freely available computer software in the process of the calculation and improvement of lighting systems.

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Influence of Replacement of Sodium Lamps in Park Luminaires with LED Sources of Different Closest Color Temperature on the Effect of Light Pollution and Energy Efficiency

Cited by 9 publications

References 63 publications

Quantitative Assessment of Architectural Lighting Designs

Quantitative Assessment of Architectural Lighting Designs

Operation of Electronic Devices for Controlling Led Light Sources When the Environment Temperature Changes

Simulation of Artificial Lighting Using Leading Software to Evaluate Lighting Conditions in the Absence of Daylight in a University Classroom

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