Lighting Installations Research Articles

Natural lighting of interiors and sun protection of premises with roof lighting system

The article describes the contemporary issues of natural lighting of interiors of civil and industrial buildings. The major attention is given to the roof lighting system of the buildings in question, as far as this system provides not only increased levels of natural lighting, but sometimes an undesirable heat gains, due to prolonged insolation period and hence, extra solar radiation. It is noted, that this reason leads to design and construct the means of natural lighting in such a way, that to provide interiors with sufficient natural illumination and efficient sun protection at the same time. Some principal conclusions and recommendations were made as a result of analytic studies, presented in the article. For example, it was competently proved that the best solar standing solution for roof lighting installations are sheds, or sawtooth roof structure. The worst solution, to protect interiors from solar overheating are roof skylights. These skylights require extra sun protection in form of jalousies, blinds, etc. The same additional solar shading, though to less extend, is needed to provide additional sun protection for roof monitors.

Нечітка система керування електротехнічним комплексом вуличного освітлення населених пунктів

The article deals with the issue of improving the energy efficiency of electrical systems that provide comfortable living conditions for the population of cities and towns, namely street lighting. A fuzzy control system for a group of LED luminaires of a road section is created that regulates the power of the lighting devices and, accordingly, their brightness and controls the connection to a power source (either to the grid or to a battery) depending on the level of illumination, traffic intensity and electricity tariff. It was found that a controlled system with combined power supply is more efficient. It reduces electricity consumption on a typical summer night by 75.31% and 74.93%, and on a winter night by 80.4% and 77.68% compared to the traditional street lighting option, when the lighting network is either completely shut down at night or operates at only 50% of capacity, respectively. It can be stated that the fuzzy control system for the electrical complex of street lighting is energy efficient. It is also recommended that specialized enterprises in settlements responsible for the lighting network pay more attention not only to replacing light sources with new, more energy-efficient ones, but also to introducing alternative power sources for lighting installations that allow charging batteries during daylight hours, such as solar panels. This, along with the use of the fuzzy control system under consideration, will make it possible to save even more on electricity costs, which is very important in today's environment.

Improved Public Lighting at the University of São Paulo - Brazil

The University of São Paulo (USP) transitioned the roadway lighting technology at the University called Armando de Salles Oliveira (USP-CUASO campus) from High-Pressure Sodium Vapor Lamps (HPSVL) and Metal Halide Lamps (MHL) to the Solid-State Lighting (SSL). So, this paper presents and discusses the outcomes of the lighting installations and the depreciation of light output from luminaires installed at the Institute of Energy and Environment (IEE) at USP using field data collected over two years (2018–2023). The analysis incorporates aspects related to corrective maintenance, predominantly performed last year, necessitated by the end of the useful life of components such as electronic drivers (66%), 50 W LEDi modules (17%) and others (17%). The failure rate of the sampled luminaires in the IEE area increased from 10% to 28% between August 2021 and January 2023.

Analisa Sistem Penerangan Lampu Jalan Di Desa Kenten Laut Banyuasin

In evaluating street lighting systems, the main factors are safety, comfort, and beauty for road users who must receive special attention. Street lighting is very useful at night or during dark conditions such as rain or cloudiness. Therefore, the authors evaluate the street lamp lighting system on the street .A.Nakowi .No17.Rt14 in the village of KentenLaut. From the results obtained, the length of the road is 240 meters with a road width of 4 meters for the calculation of the installation of street lights based on the reality in the field by taking into account road conditions and road classification. The lamp used is SON-T 150W, after an evaluation, the street lamp lighting system on the street. A.Nakowi.No17..Rt14.In the village of KentenLaut does not meet the standards, so the street lamps in the village of KentenLaut must be repaired or replaced with lamps so that the lighting can match the standard of street lamp lighting, the standard of good street lamp lighting is 20 lux so that road users feel comfortable with bright lighting.

An Application of Photovoltaic Appropriate Technology as Garden Lighting at Tourist Area of Gangga Murmas Tree House North Lombok District

Park lighting in the Gangga Murmas Tree House Tourism Area, which is more precisely Gangga Hamlet, Genggelang Village, Gangga District, North Lombok Regency, is not sufficient. Without park lighting, tourist locations will resemble a dead zone at night and experience a decline in visitors. Therefore, the Community Service Team of the Madura State Islamic Institute through the 3T area community empowerment service provides a solution to illuminating the Gangga Murmas Tree House Tourism Area by utilizing new renewable energy Photovoltaic monocrystalline type to provide lighting at night. The installation of landscape lighting using polycrystalline technology is determined by the outcomes of location surveys and observations. The implementation carried out in the Gangga Murmas Tree House Tourism Area was carried out in several stages, namely: observation, preparation of garden light design, training and maintenance, performance testing, and tool evaluation. After the project was finished in two months, a solar power plant with a 2800Wh capacity that can power 40 lamps with a combined 120Watt capacity was created. The placement of garden lights to improve the tourism sector also received a positive response from the community and the manager of the Gangga Murmas Tree House Tourism Area.
 Keywords: Photovoltaic Appropriate Technology, Garden Lighting

Flexible p-i-n perovskite solar cell with optimized performance by KBF4 additive.

Flexible perovskite solar cells (F-PSCs) prevail in the clean energy field for their light weight, easy fabrication and installation, but the power conversion efficiency of F-PSCs needs further improvement. In this work, we numerically simulate and experimentally demonstrate the effect of the perovskite trap defects density on the power conversion efficiency. The pseudo-halide KBF4 is employed as the additive to passivate the trap defects in the perovskite films. The high electrophilicity of BF4 - group ensures its entering into perovskite lattice, optimizing crystallinity and improving the qualities of perovskite films, K+ ions can effectively passivate grain boundaries and inhibit halide anion migrations. After KBF4 passivation, trap defect density of the perovskite film was decreased from 8.0 × 1015cm-3 to 3.9 × 1015cm-3, and also the carrier lifetime increased from 108.52 ns to 234.72 ns. Consequently, the power conversion efficiency (PCE) of the F-PSCs devices increased from 13.99% to 16.04%.

Long-Term Monitoring Campaign of LED Street Lighting Systems: Focus on Photometric Performances, Maintenance and Energy Savings

The renovation of public lighting installations by replacing the traditional systems with LED technologies and introducing smart lighting control systems is a policy widely adopted to contain energy consumption and expenditure. Additionally, the long-term monitoring of the depreciation of the new lighting systems is a crucial issue. The aim of this study is to report the results of in-field measurements of new LED lighting systems in the city of Turin (Italy). A method was defined to assess: (i) energy performance (through data from the remote-control system); (ii) photometric performance (through in-field measurement campaigns); and (iii) depreciation of the photometric performance over a period of approximately 5 years. Results demonstrated that the new LED systems allow us to achieve an average energy saving of 51% compared to the ex-ante condition, improving the photometric performances and compiling the standard requirements by lowering the over-illumination levels. Moreover, the measured depreciation of the LED systems over time was compared with the predicted depreciation, estimated based on the calculation method proposed in Standards BS 5489-1:2020 and ISO/CIE TS 22012:2019. The results obtained showed that the measured depreciation of the photometric performance was closer to the predicted depreciation trend according to BS 5489-1:2020 (variations between 0% and 4%), while greater variations (between 17% and 23%) emerged considering the ISO/CIE TS 22012:2019.

Road Accident and Safety Issue in Bangladesh: A Critical Review

Road accidents are a major public health concern in Bangladesh, causing significant harm to individuals and society as a whole. Despite various initiatives taken by the government, the number of road accidents continues to increase, highlighting the need for a legal approach to address this issue. This study aims to analyze the current legal framework in Bangladesh with regards to road safety and identify potential areas for improvement. The study found that the current legal framework in Bangladesh contains several provisions aimed at promoting road safety, including the Bangladesh Road Transport Act, the Bangladesh Road Transport Corporation Act, and the Bangladesh Road Transport Authority Act. However, these laws lack effective enforcement mechanisms, and there is limited accountability for those who violate traffic rules. This has led to widespread flouting of traffic regulations and a high incidence of road accidents. The study recommends the introduction of stricter penalties for those who violate traffic rules, including fines and imprisonment. It also suggests the establishment of an independent road safety commission to monitor compliance with traffic rules and to ensure effective implementation of road safety measures. The commission should have the authority to investigate road accidents and to take appropriate actions against those found responsible persons. Additionally, the study recommends the introduction of mandatory training programs for all drivers and the provision of better infrastructure and technology to support road safety. This may include the installation of traffic lights and speed cameras, as well as the use of innovative technologies such as GPS-based monitoring systems. In conclusion, a legal approach is crucial in addressing the problem of road accidents in Bangladesh. By introducing stricter penalties, establishing an independent road safety commission, and investing in road safety infrastructure and technology, the government can help to reduce the number of road accidents and save lives. Further research is needed to understand the impact of these measures and to identify additional ways to promote road safety in Bangladesh.

Mathematical Modelling in Light and Engineering Education

The development of computer technology and mathematical methods for solving the global illumination equation gave rise to computer-aided lighting design systems, which in turn led to a genuine revolution in the practice of lighting design. Deep use of information technologies is possible only with a developed mathematical description of the light field in a lighting installation. It is the theory of the light field, based on the theory of radiation transfer, that allows us to present all lighting technology from a single conceptual point of view. The mathematical apparatus of the theory of the light field is the basis of the algorithms of all modern programs for the calculation of lighting installations, lighting devices, radiation, reflection, and transmission of light by real objects. As a result, there was a need for a significant change in light and engineering education. At the subdepartment of Light and Engineering of the NRU “MEI”, following modern trends, new and new courses have appeared and are appearing, allowing students to obtain relevant knowledge. One of the new courses planned at the subdepartment is a course of mathematical modelling in light and engineering. It involves an in-depth study of the internal structure of computer-aided design systems, which will allow obtaining specialists capable of solving non-standard tasks, creating funds for solving these tasks and conducting research.

Evaluation of LED Luminaire Utilizatıon in Road Lighting Installations in Terms of Electrical Energy Qualty

In this study, three roads with M2 lighting class, which are currently illuminated with high pressure sodium lamp (HPSL) luminaires, in three different provinces of Turkey (Samsun, Trabzon, Denizli) were selected as pilot roads. The lighting quality values of the existing HPSL luminaire installations and the new LED installations are measured by a luminance meter and electrical energy quality values like the active, reactive power, current, voltage and the power factor, odd current and voltage harmonics, and the total harmonic distortion values of the current and voltage are measured with an energy analyser. The measurement results of the illumination and electrical quality values determined for the luminaires with HPLS and LED after conversion. Evaluations were made for 100 % working status of LED luminaires, M2, M3, and M4 lighting classes depending on the automation system.

Implementasi Light Emitting Diode Sebagai Penerangan Jalan Umum Yang Hemat Daya

Public street lighting, also known as street lighting, refers to the outdoor lighting systems used to illuminate public roads. An effective street lighting system plays a crucial role in enhancing safety and security for pedestrians, cyclists, and motorists by providing improved visibility of the road and surrounding terrain during nighttime hours. The primary focus in street lighting planning is on economic factors. An analysis of light sources has highlighted the economic advantages of utilizing light emitting diodes for public street lighting. This choice proves to be more efficient when implemented in a sustainable manner. The installation of public street lighting can be the optimal solution to address the issue of inadequate lighting in the village of Pedurenan Gunung Sindur Bogor, ensuring enhanced comfort and security during nighttime activities. The lighting installation process commences with a thorough examination of the site, followed by diligently arranging and design of the electrical installations for the lighting system. Finally, the planned design was carried out and implemented. The implementation of public street lighting is a collaborative effort between college students and youth residents in the village. The outcome of this community service initiative is the implementation of public street lighting installations that offer optimal illumination, ensuring the convenience and safety for all people accessing the roads.

Exploring iSpring Suite for Android-Based Interactive Instructional Media in Electrical Lighting Installation Subject

In today’s digital era, interactive learning media is the right solution to improve the quality of effective and efficient learning. An active engagement between students and learning media using iSpring Suite can enhance student understanding and enthusiasm and motivate students in teaching and learning. This research aims to create Android-based interactive media using iSpring Suite for electric lighting installation learning materials. This research uses the Research and Development (R&D) method with a 4-D development model. This research consists of several stages: defining, designing, developing, and disseminating, and was conducted using validation sheet instruments. The results of this study indicated that the learning media experts confirmed that it was 93.8% valid. At the same time, the materials experts confirmed that it was 90.8% valid. Based on the validity percentage, Android-based interactive learning media using iSpring Suite is highly recommended for electric lighting installations subject. It has been well-tested and effectively applied as an Android-based interactive learning medium.

The Effect of Using Mobile Applications in Treating Learning Difficulties Among Students in Jordan

In today’s digital era, interactive learning media is the right solution to improve the quality of effective and efficient learning. An active engagement between students and learning media using iSpring Suite can enhance student understanding and enthusiasm and motivate students in teaching and learning. This research aims to create Android-based interactive media using iSpring Suite for electric lighting installation learning materials. This research uses the Research and Development (R&D) method with a 4-D development model. This research consists of several stages: defining, designing, developing, and disseminating, and was conducted using validation sheet instruments. The results of this study indicated that the learning media experts confirmed that it was 93.8% valid. At the same time, the materials experts confirmed that it was 90.8% valid. Based on the validity percentage, Android-based interactive learning media using iSpring Suite is highly recommended for electric lighting installations subject. It has been well-tested and effectively applied as an Android-based interactive learning medium.

Lethal threat in the use of glass doors at home: A case report

BackgroundVarious instruments, including glass fragments, can inflict sharp-force damage, resulting in injuries ranging from superficial wounds to life-threatening trauma. This case report explores the lethal consequences of a 78-year-old man accidentally sustaining a stabbed-incised wound after falling against an ordinary glass door, leading to fatal bleeding from the subclavian artery. Case Report:The man's fall caused a sharp-edged glass fragment to penetrate his neck, resulting in a fatal outcome despite resuscitation attempts. Autopsy Findings:The autopsy revealed a transected subclavian artery, additional injuries to the thorax. Notably, the type of glass used in construction played a crucial role in the severity of injuries, emphasizing the need for safety standards and awareness in architectural design. DiscussionThe discussion delves into the historical use of annealed glass in construction and the evolution of safety standards for architectural glazing materials. A comparison between annealed and tempered glass underscores the importance of the latter in preventing severe injuries. The prevalence of annealed glass in older constructions raises concerns, given its propensity to cause larger and more dangerous shards upon breakage. The report highlights cases of glass-related fatalities, emphasizing the unexpected dangers associated with glass-topped furniture. ConclusionsRecommendations include the adoption of safety glass in new constructions, particularly in residences with elderly occupants, and the installation of night lights to mitigate the risk of injuries from glass and other furniture. The report contributes to enhancing understanding in forensic pathology, emphasizing the evolving role of glass in fatal incidents.

Audit of road lighting installation as a tool to improve energy intensity - case study

Audit of road lighting installation as a tool to improve energy intensity - case study

Road Accident and Safety Issue in Bangladesh: A Critical Review

Road accidents are a major public health concern in Bangladesh, causing significant harm to individuals and society as a whole. Despite various initiatives taken by the government, the number of road accidents continues to increase, highlighting the need for a legal approach to address this issue. This study aims to analyze the current legal framework in Bangladesh with regards to road safety and identify potential areas for improvement. The study found that the current legal framework in Bangladesh contains several provisions aimed at promoting road safety, including the Bangladesh Road Transport Act, the Bangladesh Road Transport Corporation Act, and the Bangladesh Road Transport Authority Act. However, these laws lack effective enforcement mechanisms, and there is limited accountability for those who violate traffic rules. This has led to widespread flouting of traffic regulations and a high incidence of road accidents. The study recommends the introduction of stricter penalties for those who violate traffic rules, including fines and imprisonment. It also suggests the establishment of an independent road safety commission to monitor compliance with traffic rules and to ensure effective implementation of road safety measures. The commission should have the authority to investigate road accidents and to take appropriate actions against those found responsible persons. Additionally, the study recommends the introduction of mandatory training programs for all drivers and the provision of better infrastructure and technology to support road safety. This may include the installation of traffic lights and speed cameras, as well as the use of innovative technologies such as GPS-based monitoring systems. In conclusion, a legal approach is crucial in addressing the problem of road accidents in Bangladesh. By introducing stricter penalties, establishing an independent road safety commission, and investing in road safety infrastructure and technology, the government can help to reduce the number of road accidents and save lives. Further research is needed to understand the impact of these measures and to identify additional ways to promote road safety in Bangladesh.

Aplikasi lampu bertenaga surya untuk penerangan

Electricity use tends to come from energy produced by PLN, where the energy produced in several areas is from non-renewable oil-fueled power plants. This causes several areas to remain dark because they do not have street lighting and are dependent on electricity services from the government, including Banguntapan Village which has minimal lighting. The absence of lighting makes the road dark and prone to crime such as theft, which is often due to darkness. To prevent theft, residents are required to guard the village system, but this is not optimal. For this reason, community service is carried out by creating a sense of security through the street lighting construction program in Banguntapan Village, especially the Muhammadiyah Islamic Center (MIC) complex. The aim of carrying out this community service activity is to provide an alternative, renewable electrical energy source by utilizing solar panels that the community can use. Activities were carried out in several stages, namely observation, outreach, and counseling, as well as training on solar-powered lighting installations. The activity partner is PRM 3 Banguntapan which is located in the Muhammadiyah Islamic Center (MIC) complex, precisely in Sorowajan Hamlet, Banguntapan Village. The results obtained are the availability of alternative electrical energy sourced from sunlight stored in batteries and solar-powered lighting units. Residents know and understand that the use of solar energy is a form of energy-independent village development.

Pengembangan Media Pembelajaran Quiz Interaktif Berbantuan Software Articulate Storylane 3 Untuk Meningkatkan Hasil Belajar Siswa pada Mata Pelajaran Instalasi Penerangan Listrik Kelas XI di SMK Negeri 3 Surabaya

This research was carried out because the learning activities for Class XI Electrical Lighting Installation at SMK Negeri 3 Surabaya were still teacher-centred. For this reason, learning media is needed that can help students play a more active, independent role and can improve student learning outcomes. The method used in this research is 4D type R&D which consists of four stages, namely design, Define, Developed, and Dissaminate. This research aims to produce an interactive quiz learning media assisted by articulated storyline 3 software that is valid, practical and effective. The research design applied was an experimental non-equivalent control group design. The research subjects were 30 students in class XI TITL 1 and TITL 2 each. This research was carried out in the even semester 2022/2023 using an independent curriculum and a Problem Based Learning learning model. Data collection techniques use validation sheets, response questionnaires, and multiple choice tests. The learning media validation results obtained with an average of 89.68% can be categorized as very valid. In the practical aspect, in terms of the student response questionnaire, the average rating was 84%, so it can be divided into very practical. Aspects of effectiveness were tested using the Wilcoxon test and T-test. In the realm of knowledge, attitudes and skills both obtained a significance value (2-tailed) of 0.00 < 0.05, therefore it can be concluded that there was an increase in the knowledge, attitudes and skills values ??of the experimental class compared to the control class. The conclusion is that the interactive quiz learning media assisted by articulated storyline 3 software in the Class XI Electrical Lighting Installation subject that was developed can be verified as suitable for use at SMK Negeri 3 Surabaya.

Pengaruh Model Pembelajaran Project Based Learning Berbantuan Training Kit Bardi Smart Home Terhadap Hasil Belajar Siswa Pada Mata Pelajaran Instalasi Penerangan Listrik Kelas XII Titl Di Sekolah SMK Negeri 1 Pungging

In the learning process, of course there is a need for a learning model that can support student learning activities in class. Project based learning model (PjBL) is suitable to be applied in vocational high schools, because it actively involves students in the learning process and can support student skills. This research aims to: (1) Find out the effect of the PjBL model assisted by the Bardi smart home training kit on student knowledge learning outcomes; (2) Knowing the effect of the PjBL model assisted by the Bardi Smart Home training kit on student skills learning outcomes; (3) Knowing the effect of the PjBL model assisted by the Bardi smart home training kit on student attitude learning outcomes. The research was conducted on the Electrical Lighting Installation subject class XII TITL Vocational High School 1 Pungging. The research method used is quasi-experimental with nonequivalent control group design. The sample of this research were students in class XII TITL 1 as the control class and class XII TITL 2 as the experimental class. Data analysis techniques use Independent T-Test for normal data and the Mann Whitney non-parametric test for abnormal data. The research results show that: (1) There is an effect of the PjBL model assisted by the Bardi smart home training kit on student knowledge learning outcomes with a significance value of 0.000; (2) There is an effect of the PjBL model assisted by the Bardi smart home training kit on student skills learning outcomes with a significance value of 0.000; (3) There is an effect of the PjBL model assisted by the Bardi smart home training kit on student attitude learning outcomes with a significance value of 0.005.

Penerapan Keselamatan Dan Kesehatan Kerja Dalam Praktik Instalasi Penerangan Listrik Di Sekolah Menengah Kejuruan

This research is a descriptive research in the form of a pre-experiment which is not yet a serious experiment. This study aims to describe the application of Occupational Safety and Health (OSH) in the practice of electric lighting installations at SMKN 2 Makassar and the factors that hinder the application of OSH. This study used a design (the-one group posttest-design). Data collection techniques used are observation, interviews and documentation. Based on the results of the study, it can be concluded that through the first observation, the application of K3 in the practice of installing electric lighting is still lacking because there are several aspects that have not been implemented. Data on the percentage level of conformity to the observed aspects are included in the medium category. After providing an understanding of OSH, a second observation was carried out where the application of OSH had increased so that the results of the percentage data on the level of conformity to the observed aspects were included in the good category. There are inhibiting factors for the application of OSH, namely that the teacher has not given directions optimally regarding the importance of implementing OSH, as well as directions to always pay attention to the use of personal protective equipment during practice.