scholarly journals Indoor lighting design for healthier workplaces: natural and electric light assessment for suitable circadian stimulus

2021 ◽  
Author(s):  
María Teresa Aguilar Carrasco ◽  
Samuel Domínguez Amarillo ◽  
Ignacio Acosta ◽  
Juan Sendra
Keyword(s):  
Lighting Design ◽  
Electric Light ◽  
Indoor Lighting

The Research on the Application of Two Kinds of Light Sources in the Training Venue for Physical Education of Universities

2012 ◽  
Vol 430-432 ◽  
pp. 1786-1790 ◽  
Author(s):  
Shu Fang Li
Keyword(s):  
Energy Efficiency ◽  
High Pressure ◽  
Physical Education ◽  
Lighting Design ◽  
Light Sources ◽  
Metal Halide Lamp ◽  
Sodium Lamp ◽  
Electric Light ◽  
High Pressure Sodium Lamp ◽  
Power And Energy

The energy efficiency experiment of electric light is implemented according to the lighting design of the physical training venues. In the experiment, the corresponding illumination, power and energy efficiency ratio of the commonly used high pressure sodium lamp and metal halide lamp which work under the voltage ranging from 187V to 234V are experimentally measured and the lighting effect characteristics of the two kinds of electric light sources compared, proving that the high pressure sodium light source should be employed in the training venue for physical education of universities.

Nominal risk analysis of the blue light from LED luminaires in indoor lighting design

Optik ◽  
2020 ◽  
Vol 223 ◽  
pp. 165599
Author(s):  
David Baeza Moyano ◽  
Silvia Baeza Moyano ◽  
Miguel Gómez López ◽  
Alejandro Salcedo Aznal ◽  
Roberto Alonso González Lezcano
Keyword(s):  
Risk Analysis ◽  
Blue Light ◽  
Lighting Design ◽  
Indoor Lighting

Indoor Lighting Design Incorporating Human Psychology

1998 ◽  
Vol 41 (3) ◽  
pp. 113-124 ◽  
Author(s):  
Albert T.P. So ◽  
L. M. Leung
Keyword(s):  
Lighting Design ◽  
Human Psychology ◽  
Indoor Lighting

A step towards the optimization of the indoor luminous environment by genetic algorithms

2015 ◽  
Vol 26 (5) ◽  
pp. 590-607 ◽  
Author(s):  
B. Mattoni ◽  
P. Gori ◽  
F. Bisegna
Keyword(s):  
Energy Efficiency ◽  
Genetic Algorithms ◽  
Cost Effectiveness ◽  
Energy Performance ◽  
Lighting Design ◽  
Luminous Flux ◽  
Light Sources ◽  
The Cost ◽  
Indoor Lighting ◽  
Optimal Configurations

Buildings are heavily responsible for energy consumption and CO2 emissions. Increasing their energy efficiency is in the direction of the EU strategies; and this is consistent with EU Energy Performance of Buildings Directive (EPBD 2010/31/EU), 2010. In this view the design and management of daylight and artificial light can play a fundamental role. In this paper, a method to optimize indoor lighting design from energy efficiency, economic and environmental viewpoints is presented. The optimization was developed through the Genetic Algorithms technique and the optimal layout in terms of number, location and mounting heights of luminaires in a generic office room was evaluated. Solutions with different types of light sources, nominal luminous flux and photometric distribution curves were compared and the cost effectiveness of these alternatives was also considered. The systems resulting from the optimization show increased uniformity of illuminance, a reduction of the number of luminaires and a decrease of the maximum UGR values, proving the effectiveness of the technique in the lighting design field. Results show that current methods for lighting design can still be improved to achieve optimal configurations in terms of energy efficiency and cost effectiveness.

scholarly journals A New Trend for Indoor Lighting Design Based on A Hybrid Methodology

2020 ◽  
Vol 7 (2) ◽  
pp. 137-153
Author(s):  
Fathalla Selim ◽  
◽  
Samah Mohammed Elkholy ◽  
Ahmed Fahmy Bendary ◽  
◽  
...  
Keyword(s):  
Lighting Design ◽  
Indoor Lighting ◽  
Hybrid Methodology

scholarly journals VALIDATION OF SPECTRAL SIMULATION TOOLS FOR THE PREDICTION OF INDOOR ELECTRIC LIGHT EXPOSURE

2021 ◽  
Author(s):  
C. Pierson ◽  
M. Gkaintatzi-Masouti ◽  
M.P.J. Aarts ◽  
M. Andersen
Keyword(s):  
Light Exposure ◽  
Spectral Characteristics ◽  
Spectral Irradiance ◽  
Spectral Simulation ◽  
Simulation Tools ◽  
Lighting Conditions ◽  
Spectral Simulations ◽  
Electric Light ◽  
Indoor Lighting

As the interest in design applications related to responses to light beyond vision is growing, two simulation tools, ALFA and Lark, have been developed to incorporate spectral characteristics of light in the evaluation of indoor lighting conditions. The spectral characteristics of light are of particular relevance when studying ipRGC-influenced responses. This paper aims to assess the reliability of these tools in predicting indoor spectral irradiance specifically from electric lighting. Spectral irradiance was measured under three indoor electric lighting scenarios and compared against spectral irradiance simulated in ALFA and Lark. While the outcomes of the study tend to show that ALFA is both more accurate and faster, rather large errors were found for spectral irradiance (-28.6% to 33.4%). In comparison to a prior study focusing on daylighting, these results seem to indicate that spectral simulations of electrically lit scenes are generally less accurate than those of daylit scenes with these tools.

Design & Development of a Solar Powered, CCT changing R-B-W LED Based Artificial Window

2018 ◽  
pp. 191-198
Author(s):  
Basudeb Das ◽  
Asit Kumar Sur ◽  
Saswati Mazumdar
Keyword(s):  
Light Output ◽  
Well Being ◽  
Lighting Design ◽  
White Led ◽  
Design Development ◽  
Visual Effects ◽  
Night Time ◽  
Solar Powered ◽  
Indoor Lighting ◽  
Dynamic Lighting

The concept of Artificial Window is being applied in indoor lighting design since couple of years and is easily available in market, but the main drawback of these artificial windows is their constant CCT (Correlated Colour Temperature) light output. The developed artificial window is a CCT changing system, which follows the preset pattern of daylight CCT throughout the day. It will very effective for those, who stay in a window­less room or a closed room. It is known that light not only has the visual effects but also has photo­biological effects. A dynamic light is very helpful in well being, positive mood, increased concentration, alertness consequently increased productivity. The developed system is solar powered at daytime; this window is powered by the SPV module directly without using battery. A small battery is being charged simultaneously which powers the system at night time. The window is made using two types of coloured LEDs: Red and Blue and Warm White LED. The new concept of dynamic lighting provides a very wide CCT range from 2300 K to 10800 K.

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