scholarly journals Energy­Saving Lighting of Agricultural Premises and its Parameters Calculation

2021 ◽  
Vol 15 (3) ◽  
pp. 28-34
Author(s):  
L. Yu. Yuferev
Keyword(s):  
Energy Saving ◽  
Full Range ◽  
Light Level ◽  
Housing System ◽  
Research Purpose ◽  
Light Sources ◽  
Lighting System ◽  
Led Light ◽  
Lighting Systems ◽  
Provided Examples

he properly selected lighting for livestock farms is noted to ensure the optimal productivity of bred animals and poultry and to generate profit for the enterprise. (Research purpose) The research purpose is to substantiate the parameters of energy-saving lighting for agricultural premises and to develop methods for its calculation. (Materials and methods)  It has been shown that greenhouse farms most often use high and low pressure sodium lamps for lighting, but their spectrum only partially substitutes the natural one. It has been assumed that expanding the spectrum and approximating it to the solar one could improve product quality and yield. It has been stated that incandescent and fluorescent lamps are traditionally used to illuminate livestock and poultry premises, but they cannot create a lighting system with a «dawn - sunset» function, and their spectrum does not correspond to the full range perceived by animals and birds. It has been noted that the LED light sources’ functioning has such features that make the application of standard calculation methods impossible. We obtained formulas for calculating the light level and flux of photons. (Results and discussion) We provided examples of applying the energy-saving lighting systems developed by us in poultry houses with floor housing system, in cowsheds with tethered housing system and in an experimental phyto-laboratory for growing seedlings. It has been found that after replacing the lighting system based on DRL-125 lamps with a new one, with 36 nine-watt LED lamps, the power consumption decreased from 2,250 to 336 watts, the average light level increased and amounted to 90 lux, while the  illumination uniformity and color rendition improved. We have developed a resonant power supply system for LEDs to create lighting systems with a «sunrise - sunset» function. (Conclusions)  We have shown the possibility and provided examples of using the developed by us energy-saving controlled lighting systems based on LED light sources. 

Design of Solar-Powered LED Road Lighting System

2019 ◽  
pp. 75-85
Author(s):  
Canan Perdahci ◽  
Hamdi Ozkan
Keyword(s):  
High Pressure ◽  
Renewable Energy Sources ◽  
Junction Temperature ◽  
Mercury Vapour ◽  
Light Sources ◽  
Street Lighting ◽  
Led Light ◽  
Road Lighting ◽  
Lighting Systems ◽  
High Pressure Sodium Lamp

Turkey is rich in terms of renewable energy sources and, therefore, is now encouraging the use of sustainable clean lighting systems in road applications. High pressure sodium lamp is the most widely used type in main roads, but other types of lamps such as mercury vapour lamps or metal halide lamps can be utilized for street lighting. Since it enables energy and money saving, LED light technology has replaced high pressure sodium lamps nowadays. Once solar power system (PV) is integrated with LED lamp for street lighting, the amount of saving and local impact might be enriched. LEDs used as light sources in road lighting luminaires with rising lumen values, decreasing junction temperature, higher colour rendering efficiency, longer lifetime have become more efficient than many light sources with the latest developments. Since the structure of the luminaires in which the LED light sources are used differs from that of the conventional light sources, the optical, thermal and electrical design of the LED luminaires must be considered differently. Thus, this study concentrates upon design considerations and the operating principle of solarpowered LED road lighting luminaire in details. Also, a simple solar panel system was designed and the economical values obtained at the end of 20 years were compared when using the ongrid system and the off-grid system.

scholarly journals An Efficient Method for LED Light Sources Characterization

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1089 ◽  
Author(s):  
Sara Raggiunto ◽  
Alberto Belli ◽  
Lorenzo Palma ◽  
Piergiovanni Ceregioli ◽  
Massimo Gattari ◽  
...  
Keyword(s):  
Efficient Method ◽  
Least Squares Method ◽  
Color Temperature ◽  
Experimental Setup ◽  
Light Sources ◽  
Careful Study ◽  
Source Characterization ◽  
Led Light ◽  
Lighting Systems ◽  
Led Drivers

Digital LED drivers capable of blending the spectrum of two LED fixtures with different Correlated Color Temperatures through the LEDs’ power supply control are widespread. However, the digital control of lighting systems is possible only after a careful study of the LED’s response, in terms of illuminance and Correlated Color Temperature. The proposed work takes advantage of the Tunable White technology for the realization of an efficient method for LED light source characterization. In order to evaluate how the light changes as a function of the electric power supplied by the LED drivers, an experimental setup to characterize LED light sources has been designed. Starting from the data acquired from the experimental setup, a model for dimming the LED driver and obtaining the desired values of quality of light has been developed. The proposed model is based on the least squares method and its accuracy is evaluated by comparing the obtained values of illuminance and Correlated Color Temperature with those measured by an illuminance spectrophotometer. Results achieved an error of 0.3% for Correlated Color Temperature and 1.5% for illuminance using the proposed approximation functions.

scholarly journals An approach to energy efficient lighting design for economic residential flats

2021 ◽  
Vol 850 (1) ◽  
pp. 012013
Author(s):  
Subhasish Das ◽  
Anubrata Mondal ◽  
Kamalika Ghosh
Keyword(s):  
Power Consumption ◽  
Energy Saving ◽  
Energy Efficient ◽  
Residential Building ◽  
Light Level ◽  
Lighting Design ◽  
Wide Range ◽  
Standard Values ◽  
Lighting Systems

Abstract The lighting design in a residential building now-a-days is not only limited to general lighting but also it is focused to provide quality lighting with the help of wide range of available luminaire with different orientations as well as colours with efficient use of energy, that opens up accurate characteristics of specific areas in any room of the building. The affordable housings in many states are some of the examples of residential building where most of the flats in a typical floor are using conventional lighting systems which are not energy efficient and light level is low compared to standards. This paper is mainly focused to provide a budget friendly as well as energy efficient lighting design with the help of new and energy efficient lamps using DIALux Software, which can be proposed to renovate the existing conventional lighting systems. In this paper effort has been made to reduce the power consumption in all rooms and lux levels has been achieved as per standard values along with good amount of energy saving with the use of newer technologies.

scholarly journals Measures to Improve the Energy Efficiency of Street Lighting Systems in the Kharkiv City

2021 ◽  
Vol 60 (2) ◽  
pp. 39-46
Author(s):  
Olena Didenko ◽  
Krystyna Suvorova ◽  
Olena Liashenko ◽  
Maria Sukhonos ◽  
Maria Liubchenko
Keyword(s):  
Energy Efficiency ◽  
High Pressure ◽  
Energy Saving ◽  
Light Sources ◽  
Lighting System ◽  
Monitoring And Control ◽  
Investment Activity ◽  
Street Lighting ◽  
Improve Energy Efficiency ◽  
The Road

High-quality street lighting improves visual perception of the road and provides for a significant decrease in the number of road accidents. It has been established that the total number of accidents can be reduced by 30% for national roads and by 45% for especially hazard areas (e.g., at intersections). Doubling of the average luminance of the road surface significantly reduces the number of accidents in the dark and twilight. Sufficient street lighting contributes to: reducing electricity consumption; decreasing operating costs; improving the environmental situation; promoting business, tourism and investment activity; decreasing the number of criminal offenses. The analysis of recent research and publications helped choose the best European practices which can be used to improve the outdoor lighting in Ukraine. The street lighting network is continuously growing and being modernized. Different types of light sources are being used in the network to illuminate the city. Today, high-pressure lamps (HPS) are leading. They are increasingly replaced by LED light sources. Not a small share is accounted for by metal-halide lamps. The smallest number of light sources in the street lighting system, high-pressure mercury and compact fluorescent lamps (CFLs). To increase the efficiency of the street lighting system and reduce energy consumption for its operation, measures for its reconstruction and modernization are required. For this purpose, it is necessary to address the following problems: high level of obsolescence and physical wear and tear of system elements; inefficient use and high losses of electricity at the stages of transportation and consumption, due to the use of obsolete and worn-out equipment; suboptimal distribution of the utility capacity, which leads to ineffective use of the existing lighting system; low efficiency of the street lighting control system, due to the lack of electric meters and remote monitoring and control of the street lighting. Introduction of energy-saving types of light sources is one of the ways to modernize the existing street lighting system. It is necessary to replace old lighting fixtures, which have already exhausted their life span, by new energy-saving light sources (replace CFLs by LEDs), use automatic control systems. All this in turn will help reduce energy costs by 60%. To improve energy efficiency of the street lighting system, it is also recommended to carryout the replacement of electromagnetic ballasts by electronic ones. The employment of electronic ballasts, e.g., in case of using HPS 250 lamps, allows to save approximately 255 kWh/year. Considering that the price per kW of electric energy is UAH 2.68, one luminaire helps save the amount of UAH 683.4 per year.

scholarly journals Real-Time Sensing and Control of Integrative Horticultural Lighting Systems

J ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 266-274 ◽  
Author(s):  
Dorukalp Durmus
Keyword(s):  
Real Time ◽  
Spectral Distribution ◽  
Optical Radiation ◽  
Environmental Changes ◽  
Light Sources ◽  
Structural Development ◽  
Lighting System ◽  
Active Feedback ◽  
Lighting Systems ◽  
Physiological Markers

Optical radiation, including light, plays a crucial role in the structural development of plants through photomorphogenesis and the response to environmental changes. However, plant sensitivity to optical radiation widely varies across species. While research efforts are currently underway to discover the fundamentals of plant physiology, light sources with preprogrammed light settings (light recipes) are offered to clients to expedite plant growth. Since horticultural lighting research is in its infancy, prescribed lighting conditions are not likely to address every plants’ needs in terms of the spatial and spectral distribution, intensity, and duration of the light sources. However, it is possible to imagine an intelligent horticultural lighting system that can diagnose plants through sensors, and adjust the light intensity, the spatial and spectral distribution for the specific plant species with active feedback. Such an advanced real-time horticultural lighting system would consist of sensors to detect physiological markers from plants and environmental factors and an artificial intelligence algorithm to adjust the output. While the underlying technology for a real-time optimization system exists, the implementation and training would require further research.

Development of Energy-Resource-Saving Lighting Installations for Agriculture

2020 ◽  
pp. 95-102
Author(s):  
Irina G. Pospelova ◽  
Mariya A. Nabatchikova ◽  
Ilshat I. Iksanov
Keyword(s):  
Automatic Control ◽  
Energy Saving ◽  
Energy Savings ◽  
Energy Resource ◽  
Electrical Energy ◽  
Research Purpose ◽  
Industrial Complex ◽  
Resource Saving ◽  
Led Lighting ◽  
Lighting Systems

Reducing energy costs during the production of agro-industrial livestock production by maintaining the required lighting parameters is an urgent task. The largest consumption of electricity in farms is by electric lighting. The mass transition to energy-efficient equipment, using control systems in livestock and industrial premises of the agro-industrial complex, leads to increased energy savings and maintenance of optimal microclimate mode. (Research purpose) The research purpose is in developing energy-saving lighting installations, a program for automatic control of the lighting system and assessing the prospects for their use for enterprises of the agro-industrial complex. (Materials and methods) The article presents an overview of developments, scientifically based led lighting devices to maintain the required lighting parameters in livestock and industrial premises of the agro-industrial complex, in order to save electricity. Authors have determined that the technical effect of the proposed lighting installations is in reducing the electrical energy consumed. In one of them by creating a special shape of the light intensity curve, and in the second one by converting thermal energy into electrical energy used for additional power supply of the lamp. (Results and discussion) The article presents the results of research on the development of a program for automatic control of lighting systems for the implementation of energy-saving mode of operation. Authors consider the possibility of maintaining and regulating optimal illumination with the help of programmable controllers. (Conclusions) The analysis of the state and prospects of development of lighting systems showed the possibilities of development of scientifically based led lighting devices, as well as programs for regulating lighting in livestock premises based on programmable controllers. The use of the system will allow achieving optimal parameters of the microclimate, increasing productive and reproductive indicators, and effectively use optical radiation by reducing the consumption of electrical energy by up to 30 percent with the same quality of lighting.

scholarly journals Cost-Benefit Analysis and Emission Reduction of Energy Efficient Lighting at the Universiti Tenaga Nasional

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
G. S. B. Ganandran ◽  
T. M. I. Mahlia ◽  
Hwai Chyuan Ong ◽  
B. Rismanchi ◽  
W. T. Chong
Keyword(s):  
Energy Saving ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Environmental Benefits ◽  
First Year ◽  
Lighting System ◽  
New Energy ◽  
Lighting Systems ◽  
Electricity Saving ◽  
College Of Engineering

This paper reports the result of an investigation on the potential energy saving of the lighting systems at selected buildings of the Universiti Tenaga Nasional. The scope of this project includes evaluation of the lighting system in the Library, Admin Building, College of Engineering, College of Information Technology, Apartments, and COE Food court of the university. The main objectives of this project are to design the proper retrofit scenario and to calculate the potential electricity saving, the payback period, and the potential environmental benefits. In this survey the policy for retrofitting the old lighting system with the new energy saving LEDs starts with 10% for the first year and continues constantly for 10 years until all the lighting systems have been replaced. The result of the life cycle analysis reveals that after four years, the selected buildings will bring profit for the investment.

Energy Saving and Payback Period for Retrofitting of Lighting Systems in Taiwan

2011 ◽  
Vol 71-78 ◽  
pp. 2190-2195
Author(s):  
Chung Yi Chang ◽  
Hsien Te Lin
Keyword(s):  
Energy Saving ◽  
Global Climate ◽  
Green Building ◽  
Payback Period ◽  
Average Lifetime ◽  
Lighting System ◽  
Potential Energy Saving ◽  
Low Performance ◽  
Lighting Systems ◽  
New Buildings

Because of the energy crisis and the low proportion of new buildings in Taiwan, rational use of electricity in existing buildings becomes very important for reducing carbon emissions and combating global climate change. The retrofitting of lighting systems is one of the most widely adopted energy saving measures. This study presents the potential energy saving and payback period of lighting system retrofit through replacing low performance T8 fluorescents with T5 fluorescents and LED indicator lights in the Green Building Renovation Plan. Based on the analysis, this study concludes that lighting system retrofit can achieve significant energy saving ratios of 10-17.5% in daily use. However, the average payback periods of GBRP investment and normal purchase investment are ten years and 7.82 years, respectively. Both exceed the average lifetime of lighting equipment, suggesting that lighting system retrofit is slightly uneconomical because of the low electricity tariff in Taiwan.

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