Feasibility study of low cost solar energy day lighting system via optical fiber: A case study of Rabat city in Morocco

2015 ◽  
Author(s):  
Laila Sedki ◽  
Mohamed Maaroufi
Keyword(s):  
Solar Energy ◽  
Optical Fiber ◽  
Feasibility Study ◽  
Low Cost ◽  
Lighting System

scholarly journals PQ and Harmonic Assessment Issues on Low-Cost Smart Metering Platforms: A Case Study

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6361
Author(s):  
Giovanni Artale ◽  
Giuseppe Caravello ◽  
Antonio Cataliotti ◽  
Valentina Cosentino ◽  
Dario Di Cara ◽  
...  
Keyword(s):  
Power Quality ◽  
Feasibility Study ◽  
Low Voltage ◽  
Low Cost ◽  
Distribution Networks ◽  
Smart Metering ◽  
Energy Metering ◽  
Instrument Transformers ◽  
The Impact

This paper presents a feasibility study on how to implement power quality (PQ) metrics in a low-cost smart metering platform. The study is aimed at verifying the possibility of implementing PQ monitoring in distribution networks without replacing existing smart metering devices or adding new modules for PQ measurements, thus zeroing the installation costs. To this aim, an electronic board, currently used for remote energy metering, was chosen as a case study, specifically the STCOMET platform. Starting from the specifications of this device, the possibility of implementing power quality metrics is investigated in order to verify if compliance with standard requirements for PQ instruments can be obtained. Issues related to device features constraints are discussed; possible solutions and correction algorithms are presented and experimentally verified for different PQ metrics with a particular focus on harmonic analysis. The feasibility study takes into account both the use of on-board voltage and current transducers for low voltage applications and also the impact of external instrument transformers on measurement results.

scholarly journals A Model to Improve the Implementation Standards of Street Lighting Based on Solar Energy: A Case Study

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 630 ◽  
Author(s):  
Wahyudi Sutopo ◽  
Ika Shinta Mardikaningsih ◽  
Roni Zakaria ◽  
Ahad Ali
Keyword(s):  
Solar Energy ◽  
National Standard ◽  
Lighting System ◽  
Model Framework ◽  
Street Lighting ◽  
Benefit Cost Analysis ◽  
Proposed Model ◽  
Black Area ◽  
Benefit Cost

This paper aims to improve the implementation standards of solar-energy-based street lighting in Indonesia. A model framework was developed to assess existing conditions regarding the level of lux, the distance between poles, pole height, and lamp power. According to the evaluation of the existing circumstances, the street lighting system is not satisfactory according to the national standard, with 64.7% black area. An alternative installation of street lighting designed by DIALux application was proposed to fulfill the technical standard of street lighting. The result shows that this alternative design can be used for renewing existing street lighting with better performance and reliability. Economic analysis of all technically feasible alternatives was conducted afterward by benefit–cost analysis. The analysis shows that solar-energy-based street lighting requires as much as 621,473,620.00 Indonesian Rupiah (IDR), with 1.06 benefit–cost ratios and a 9% reduction of total cost. Therefore, the analysis indicates that solar-energy-based technology can be feasibly implemented in a street lighting system. The results show that the proposed model can be applied to improve the implementation standard of solar-energy-based street lighting.

scholarly journals Low Cost Green Retrofit for Office

2019 ◽  
Vol 8 (2) ◽  
pp. 3155-3161 ◽  
Keyword(s):  
Indoor Air ◽  
Air Conditioning ◽  
Low Cost ◽  
Ventilation System ◽  
Lighting System ◽  
Air Conditioning System ◽  
Potted Plants ◽  
Building Retrofit ◽  
Significant Attention

Building retrofit programme has received significant attention in recent years. This article aims to make a contribution towards low cost green retrofit for office application. The retrofit options suggested in this study includes ventilation system, efficient lighting system, potted plants for better indoor air quality and thermal insulation to walls and roof. The detailed analysis of proposed ventilation system is included in the present study. The comparison between proposed ventilation system with existing air conditioning system is also analyzed. The study demonstrates an efficient way towards achieving low cost green retrofit. The outcomes of this case study will increase the confidence among stakeholders in promoting energy conservation and sustainability.

scholarly journals Design of Solar Optical Fiber Lighting System for Enhanced Lighting in Highway Tunnel Threshold Zone: A Case Study of Huashuyan Tunnel in China

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Xiaochun Qin ◽  
Xuefeng Zhang ◽  
Shuai Qi ◽  
Hao Han
Keyword(s):  
Optical Fiber ◽  
Physiological Function ◽  
Lighting System ◽  
Luminance Change ◽  
Led Lighting ◽  
Highway Tunnel ◽  
Composition Materials ◽  
Longitudinal Slope ◽  
Design Speed

In this paper, the principle, structural composition, materials, and characteristics of solar optical fiber lighting system were discussed. The different luminance requirements of different zones of highway tunnel were identified on the basis of the analysis of tunnel lighting considering drivers’ visually self-accommodating physiological function for luminance change. Taken Huashuyan Tunnel of G109 Highway located in Hohhot of Inner Mongolia in China as the case study, the system design of solar optical fiber lighting for enhanced lighting in threshold zone of highway tunnel was made. It was indicated through calculation that the design length of solar optical fiber enhanced lighting was related to the design speed, longitudinal slope, and overhead clearance of the tunnel, and the design luminance of solar optical fiber enhanced lighting was related to the luminance outside the tunnel, the design speed, and the design traffic flow of the tunnel. Luminance analysis of the solar optical fiber lighting system of Huashuyan Tunnel was made based on the on-site experiment. Also, the 3D illuminance simulation results by DIALux software were made to indicate that the solar optical fiber lighting system in Huashuyan Tunnel still well met the enhanced lighting demand even not considering the contribution of LED lighting.

scholarly journals Low cost home automotation with ESP32

2020 ◽  
pp. 36802-36808
Keyword(s):  
User Interface ◽  
Low Power ◽  
Mobile Devices ◽  
Quantitative Research ◽  
Low Cost ◽  
Home Automation ◽  
Lighting System ◽  
Visual Model ◽  
Made In

Affordable home automation using an ESP32 low power controller. Applying bibliographic research to understand the concepts required for the preparation of the work and adopting quantitative research through a questionnaire to a random audience. Also, a research documentation to support information in formal and informal bodies. It was exemplified through a case study using a visual model representing a popular residence with five rooms where it was possible to carry out the automation of the lighting system through mobile devices using the WIFI network and an app made in the app inventor, a user interface. As result, it was possible to notice the benefits that an automated residence can provide, such as comfort, practicality, safety and economy.

The benefits of the transition from fossil fuel to solar energy in Libya: A street lighting system case study

2017 ◽  
Vol 53 (2) ◽  
pp. 138-151 ◽  
Author(s):  
Ashraf Khalil ◽  
Zakariya Rajab ◽  
Moneer Amhammed ◽  
Ali Asheibi
Keyword(s):  
Solar Energy ◽  
Fossil Fuel ◽  
Lighting System ◽  
Street Lighting

Low Temperature Fault Isolation Using Soft Defect Localization

2012 ◽  
Author(s):  
Kristopher D. Staller
Keyword(s):  
Low Temperatures ◽  
Laser Scanning ◽  
Low Cost ◽  
Fault Isolation ◽  
Laser Scanning Microscopy ◽  
Cold Temperature ◽  
Multiple Point ◽  
Defect Localization ◽  
Low Levels

Abstract Cold temperature failures are often difficult to resolve, especially those at extreme low levels (< -40°C). Momentary application of chill spray can confirm the failure mode, but is impractical during photoemission microscopy (PEM), laser scanning microscopy (LSM), and multiple point microprobing. This paper will examine relatively low-cost cold temperature systems that can hold samples at steady state extreme low temperatures and describe a case study where a cold temperature stage was combined with LSM soft defect localization (SDL) to rapidly identify the cause of a complex cold temperature failure mechanism.

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