scholarly journals Scientific Substantiation of Increase of Technical and Economic Efficiency of Use of Solar Energy

2020 ◽  
pp. 121-130
Author(s):  
L.Hr. Melnyk ◽  
O.I. Matsenko ◽  
V.S. Tereshchenko
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Economic Efficiency ◽  
Economic Feasibility ◽  
The Sun ◽  
Solar Panels ◽  
Axis Orientation ◽  
Fixed Angle ◽  
Advantages And Disadvantages ◽  
Study Results

The article is devoted to finding ways to improve the efficiency of using solar panels. In the mainstream of increasing the economic efficiency of solar stations' operation, methods of reducing the cost of generating electricity based on solar energy are considered. The purpose of the article is to study ways of more efficient use of solar energy and compare the types of installation of photovoltaic converters. The study's main focus is on solar tracking systems, which give the best price/efficiency ratio for solar stations. In particular, the economic feasibility of using a biaxial tracking system for solar panels has been investigated. The advantages and disadvantages of this approach are considered. The energy potential of solar radiation under terrestrial conditions is analyzed. A table of dependences of the angle of motion of the Sun in time for one light day for the conditions of the Sumy region was built. The maximum value of the intensity of solar radiation per year per 1 m2 is calculated. The graph of the average monthly electricity production was built. In the course of the work, an experiment was set up, within the framework of which four options for photoelectric converters' placement were calculated: with automatic guidance to the Sun; inclined type; vertical type; with a fixed angle. It has been established that for the city of Sumy a two-axis orientation system is most effective. According to the results of processing the experimental data, the system with the tracker provides almost 24% more power generation than the stationary installation option (fixed angle) of the photoelectric converter module. Energy organizations and enterprises can use the study results, authorities and other stakeholders in the field of alternative energy.

Comparative Study of Solar Panels for Roadway Operations

2013 ◽  
Vol 723 ◽  
pp. 594-600 ◽  
Author(s):  
K. Wayne Lee ◽  
Andrew J. Correia ◽  
Brett D.J. Neilan ◽  
Ben Dahn
Keyword(s):  
Energy Harvesting ◽  
Solar Energy ◽  
Comparative Study ◽  
Economic Efficiency ◽  
Transportation Infrastructure ◽  
The Sun ◽  
Solar Panels ◽  
Current Technology ◽  
Solar Energy Harvesting ◽  
Novel Methods

All day long the transportation infrastructure receives solar energy from the sun rays, storing much of them as heat that is left to dissipate by nightfall. The concept of harvesting solar energy from transportation infrastructure is enticing because it offers a way to collect solar energy by utilizing an extensive infrastructure that already exists. Thus, an attempt was made to investigate novel methods for solar energy harvesting and conversion with potential economic efficiency substantially beyond that of current technology. Particularly, a comparative study was conducted between rigid and flexible solar panels.

scholarly journals Possibilities of Solar Radiation Use Through Photovoltaic Panels

2010 ◽  
Vol 67 (1) ◽  
Author(s):  
Elena POSTELNICU ◽  
Valentin VLĂDUŢ ◽  
Cristian SORICĂ ◽  
Mirela MILITARU
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Resource ◽  
Sun Exposure ◽  
The Sun ◽  
Solar Panels ◽  
Long Distance ◽  
Photovoltaic Panels ◽  
Energy Technologies ◽  
Radiation Use

Solar radiation represents an inexhaustible and unexploited energy resource in Romania and internationally. At present time, in which the energy issue grows in importance, and environment protection became a society demand, efforts in unconventional energy technologies development (solar, wind, geothermal, etc.). Many sectors rely on sun technology benefit, and so can agriculture. The productivity of these sectors depends on the amount of energy that they gather from the sun. Generally there are two types of solar systems: the ones that convert solar energy into electricity and the others that convert solar energy into heat. Both types have many applications in agriculture, helping the productivity. Photovoltaic panels are very economy efficient regarding electricity distribution for long distance locations, like agricultural exploitations, farms, orchards, and other agricultural operations. The use of solar panels is indicated for agriculture due to easy maintenance. Farmers don’t use only energy from the sun, its heat being also very important in agriculture. Drying cereal and other products through sun exposure is widely used. In this paper solutions of solar radiation use nationally and internationally are presented, different methods adapted for agriculture, as well as results from researches in this field.

Preliminary results on the determination of solar energy potential using LiDAR technology

2015 ◽  
Vol 6 (1) ◽  
pp. 11-17 ◽  
Author(s):  
G. Szabó ◽  
P. Enyedi ◽  
Gy. Szabó ◽  
I. Fazekas ◽  
T. Buday ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Production ◽  
Alternative Energy ◽  
Surface Model ◽  
Solar Panels ◽  
Energy Potential ◽  
Potential Surfaces ◽  
Large Power ◽  
Automatic Data

According to the challenge of the reduction of greenhouse gases, the structure of energy production should be revised and the increase of the ratio of alternative energy sources can be a possible solution. Redistribution of the energy production to the private houses is an alternative of large power stations at least in a partial manner. Especially, the utilization of solar energy represents a real possibility to exploit the natural resources in a sustainable way. In this study we attempted to survey the roofs of the buildings with an automatic method as the potential surfaces of placing solar panels. A LiDAR survey was carried out with 12 points/m2 density as the most up-to-date method of surveys and automatic data collection techniques. Our primary goal was to extract the buildings with special regard to the roofs in a 1 km2 study area, in Debrecen. The 3D point cloud generated by the LiDAR was processed with MicroStation TerraScan software, using semi-automatic algorithms. Slopes, aspects and annual solar radiation income of roof planes were determined in ArcGIS10 environment from the digital surface model. Results showed that, generally, the outcome can be regarded as a roof cadaster of the buildings with correct geometry. Calculated solar radiation values revealed those roof planes where the investment for photovoltaic solar panels can be feasible.

scholarly journals IRRIGAÇÃO DE PASTAGENS VIA PIVÔ CENTRAL, NA BOVINOCULTURA DE CORTE.

Irriga ◽  
2009 ◽  
Vol 14 (4) ◽  
pp. 492-503 ◽  
Author(s):  
Leonardo Pretto de Azevedo ◽  
João Carlos Cury Saad
Keyword(s):  
Solar Radiation ◽  
Dry Matter ◽  
Irrigation System ◽  
Economic Feasibility ◽  
Forage Production ◽  
Advantages And Disadvantages ◽  
Forage Plants ◽  
Matter Production ◽  
Tropical Forage ◽  
Center Pivot

Irrigação de pastagens via pivô central, na bovinocultura de corte.  Leonardo Pretto de Azevedo1; João Carlos Cury Saad21 Instituto Federal de São Roque, São Roque, SP, [email protected] de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, SP,   1 RESUMO          O presente trabalho teve como objetivo apresentar o sistema de irrigação de pastagens via pivô central na bovinocultura de corte brasileira, bem como discutir a viabilidade econômica desta prática em diferentes regiões do país. Foram apresentados fatores importantes na produção de massa seca de forrageiras tropicais, como temperatura, radiação solar, adubação e água. Também foram apresentadas as vantagens e desvantagens do sistema, bem como uma breve discussão de sua viabilidade econômica. Concluiu-se que a irrigação de pastagens pode ser uma técnica economicamente viável para regiões específicas do Brasil, considerando-se os fatores envolvidos e esclarecendo que apenas o fornecimento de água às culturas não resolve o problema da estacionalidade durante o inverno. UNITERMOS: pivô central, forrageiras, viabilidade econômica  AZEVEDO, L. P.; SAAD, J. C. C. Pasture irrigation under center pivot for beef cattle.  2 ABSTRACT          The aims of this work were to show the pasture irrigation system by center pivot with Brazilian cattle and to discuss the economic feasibility of this technique in different regions of the country. Important parameters to dry matter production of tropical forage plants, as temperature, solar radiation, fertilization, and water requirement were shown Also, the system advantages and disadvantages and a discussion about economic feasibility of this technique were presented. It was concluded that pasture irrigation is a feasible and economical technique to some specific Brazilian regions, depending on appropriated parameters. This work also concludes that just water supply is not enough to assure forage production avoiding reduction in dry production in the winter. KEYWORDS: center pivot, pasture, economic feasibility

scholarly journals Analisis Kemampuan Panel Surya Monokristalin 150 Watt pada Arus dan Pengisian yang Dihasilkan

2019 ◽  
Vol 3 (1) ◽  
pp. 29-35
Author(s):  
M Barkah Salim ◽  
Nurlaila Rajabiah
Keyword(s):  
Data Collection ◽  
Solar Energy ◽  
Research Method ◽  
Electrical Energy ◽  
The Sun ◽  
Solar Panels ◽  
Open Area ◽  
A Priority ◽  
The Many

The sun is a source of energy that cannot be used up. Therefore, the utilization of solar energy must be a priority. With the many types of solar panels that have been developed, researchers conducted an analysis of 150 watt monocrystalline solar panels. The purpose of this study is to know the amount of current and voltage produced by solar panels in some conditions of the sky, namely cloudy, bright cloudy, and bright. The research method used was the experiment. From the data that has been obtained, it can be found that the energy produced by solar panels during cloudy ranges from 0.6-0.8 amperes, when it is cloudy, 0.9-1.9 amperes, and when bright 2.0-3.2 amperes. The amount of electrical energy that can be produced is 8%. However, if the sunny state can produce twice that Suggestions for readers are if you want to take data to make sure the solar panels are completely exposed to the sun during data collection and in the open area. Much better if the angle is adjusted in the direction of sunlight.

scholarly journals Experimental Investigation on the Feasibility of Using a Fresnel Lens as a Solar-Energy Collection System for Enhancing On-Orbit Power Generation Performance

2017 ◽  
Vol 2017 ◽  
pp. 1-13
Author(s):  
Tae-Yong Park ◽  
Joo-Yong Jung ◽  
Hyun-Ung Oh
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Attitude Control ◽  
Incidence Angle ◽  
Fresnel Lens ◽  
Power Measurement ◽  
The Sun ◽  
Solar Panels ◽  
Collection System ◽  
Power Generation Performance

Cube satellites have a limitation for generating power because of their cubic structure and extremely small size. In addition, the incidence angle between the sun and the solar panels continuously varies owing to the revolution and rotation of the satellite according to the attitude control strategy. This angle is an important parameter for determining the power generation performance of the cube satellite. In this study, we performed an experimental feasibility study that uses a Fresnel lens as a solar-energy collection system for cube satellite applications, so that the power generation efficiency can be enhanced under the worst incidence angle condition between the sun and solar panels by concentrating and redirecting solar energy onto the solar panels with a commercial Fresnel lens. To verify the effectiveness of the proposed system, we conducted a power-measurement test using a solar simulator and Fresnel lenses at various angles to the light source. In addition, we predicted the on-orbit power-generation enhancement achieved by employing the solar-energy collection system with various attitude control strategies.

scholarly journals ANN for Assessment of Energy Consumption of 4 kW PV Modules over a Year Considering the Impacts of Temperature and Irradiance

2019 ◽  
Vol 11 (23) ◽  
pp. 6802 ◽  
Author(s):  
Adel Alblawi ◽  
M. H. Elkholy ◽  
M. Talaat
Keyword(s):  
Energy Consumption ◽  
Solar Radiation ◽  
Solar Energy ◽  
Relative Error ◽  
Average Energy ◽  
Office Building ◽  
Solar Panels ◽  
Tracking Model ◽  
One Year

Solar energy is considered the greatest source of renewable energy. In this paper, a case study was performed for a single-axis solar tracking model to analyze the performance of the solar panels in an office building under varying ambient temperatures and solar radiation over the course of one year (2018). This case study was performed in an office building at the College of Engineering at Shaqra University, Dawadmi, Saudi Arabia. The office building was supplied with electricity for a full year by the designed solar energy system. The study was conducted across the four seasons of the studied year to analyze the performance of a group of solar panels with the total capacity of a 4 kW DC system. The solar radiation, temperature, output DC power, and consumed AC power of the system were measured using wireless sensor networks (for temperature and irradiance measurement) and a signal acquisition system for each hour throughout the whole day. A single-axis solar tracker was designed for each panel (16 solar panels were used) using two light-dependent resistors (LDR) as detecting light sensors, one servo motor, an Arduino Uno, and a 250 W solar panel installed with an array tilt angle of 21°. Finally, an artificial neural network (ANN) was utilized to estimate energy consumption, according to the dataset of AC load power consumption for each month and the measurement values of the temperature and irradiance. The relative error between the measured and estimated energy was calculated in order to assess the accuracy of the proposed ANN model and update the weights of the training network. The maximum absolute relative error of the proposed system did not exceed 2 × 10−4. After assessment of the proposed model, the ANN results showed that the average energy in the region of the case study from a 4 kW DC solar system for one year, considering environmental impact, was around 8431 kWh/year.

scholarly journals Analysis and study of the potential increase in energy output generated by prototype solar tracking, roof mounted solar panels

F1000Research ◽  
2020 ◽  
Vol 9 ◽  
pp. 1381
Author(s):  
Jacek Harazin ◽  
Andrzej Wróbel
Keyword(s):  
Solar Energy ◽  
Energy Output ◽  
The Sun ◽  
Solar Panels ◽  
Free Standing ◽  
Potential Increase ◽  
Solar Tracking ◽  
Solar Tracker ◽  
Analysis And Study

Roof mounted solar panels come in form of fixed panels, unable to adjust to sun’s position during day and throughout the year. As an effect, the efficiency of such solution is usually dependent on the roof slope and position of the building in relation to sun’s day arc during seasons. These problems can be bypassed in free standing solar installations by equipping solar panels with solar tracker installations. Thanks to solar tracking, solar panels can be dynamically positioned perpendicular to the sun position and gather energy more efficiently throughout the day. This article presents a possibility of creating a roof mounted solar tracking panel to increase its efficiency. A prototype of solar tracking panel with two axes of movement was designed with an intention of an easy adaptation to being mounted on sloped surfaces of building roofs. A reference stationary panel was used to compare the efficiency of both solutions. A 5-day study was carried out to determine if the proposed solution could provide any benefits. Based on the study, the authors made an attempt to draw a conclusion whether the design could considerably increase the solar energy output to be worth the extra spending associated with solar tracker installation.

Cogenerative PV Thermal Modules of Different Design for Autonomous Heat and Electricity Supply

2018 ◽  
pp. 86-119 ◽  
Author(s):  
Valeriy Kharchenko ◽  
Vladimir Panchenko ◽  
Pavel V. Tikhonov ◽  
Pandian Vasant
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Thermal Energy ◽  
Heat Supply ◽  
Electricity Production ◽  
Electricity Supply ◽  
Well Testing ◽  
Pilot Studies ◽  
Solar Water Heating ◽  
Advantages And Disadvantages

Solar energy is used for electricity production by means of photovoltaic modules and for heat supply by means of solar water-heating collectors. In recent years, combined cogeneration photovoltaic thermal modules which work out at the same time both electricity and thermal energy began to be applied actively. The chapter includes consideration of the main types of cogenerative photovoltaic thermal modules of different design such as planar liquid devices as well as devices with concentrator of solar radiation. The advantages and disadvantages of each type are presented. Main directions for improving the efficiency of converting solar energy into thermal and electricity are offered. The description of the offered construction of the module, and also results of theoretical and pilot studies of the module is provided in full-scale conditions. Installation for such tests is described as well. Testing photovoltaic thermal modules with planar and concentrator design are presented in the chapter.

Penentuan Sudut Kemiringan Optimum Berdasarkan Energi Keluaran Panel Surya

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
T. M. Azis Pandria ◽  
Muzakir Muzakir ◽  
Edi Mawardi ◽  
Samsuddin Samsuddin ◽  
Munawir Munawir ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Tilt Angle ◽  
Slope Angle ◽  
Maximum Amount ◽  
Maximum Output ◽  
The Sun ◽  
Solar Panels ◽  
Radiation Data ◽  
Sloping Surface ◽  
The City

Angle tilt is an important factor that affects the amount of solar radiation received on the surface of solar panels. Fixed-mounted solar panels cannot receive the maximum amount of solar radiation. How to get the maximum solar radiation by positioning the surface of the solar panel at a certain slope to be directly facing the sun. This study aims at  determining  the optimum slope angle of solar panels in the city of Meulaboh (4,152 LU, 96,131 BT). The method of calculating the total value of solar radiation on a sloping surface simulated with Pvsyst Software is used to determine the annual optimum tilt angle. NASA SSE solar radiation data from 1983 – 2005 were used to support simulations in this study. The results showed that the tilt angle that can produce the maximum output energy in the city of Meulaboh (4,152 LU, 96,131 BT, Johan Pahlawan) is at an angle of 5° with the orientation directly facing south.   

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