scholarly journals Influence of an aluminium concentrator corrosion on the output characteristic of a photovoltaic system

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Frederico Mota ◽  
João Paulo Neto Torres ◽  
Carlos A. Ferreira Fernandes ◽  
Ricardo A. Marques Lameirinhas
Keyword(s):  
System Performance ◽  
Fossil Fuels ◽  
Climate Changes ◽  
Renewable Energies ◽  
Experimental Results ◽  
Photovoltaic System ◽  
Photovoltaic Panels ◽  
Toxic Gases ◽  
Laboratory Experiences ◽  
Solar Rays

AbstractThe climate changes observed over the last decades have been promoting a massive transformation on the energy sector, that is still, in truth highly dependent on fossil fuels. Renewable energies are a plausible alternative, because they have lower emissions of toxic gases in comparison with non-renewable ones. In the group of renewable energies, solar technology has the biggest overall potential, mainly because it is cheap and easy to set. Several solar technologies allow to equip their photovoltaic panels with concentrators, mostly to increase the output power and possibly their efficiency. However, some problems related to the use of concentrators have to be dealt in order to improve the entire photovoltaic system performance. One of these issues is the corrosion of the concentrators, leading to a premature ageing and, consequently an increase in maintenance costs. This problem is going to be analysed in this paper, presenting some simulation from a ray traicing software and also some experimental results, from our own laboratory experiences. The used software allows to trace the solar rays of the concentrator, in order to assess the effect of the defects caused by corrosion due to the ambient circumstances. After it, experimental results will help to analyse this effect and to prove simulation ones.

Effect of Cell Material on the Performance of PV System

2014 ◽  
Vol 1043 ◽  
pp. 12-16
Author(s):  
Afroza Nahar ◽  
M. Hasanuzzaman ◽  
N.A. Rahim ◽  
Md. Hosenuzzaman
Keyword(s):  
System Performance ◽  
Fossil Fuels ◽  
Clean Energy ◽  
Photovoltaic Cell ◽  
Renewable Energies ◽  
Energy Resources ◽  
Photovoltaic System ◽  
Renewable Energy Resources ◽  
Pv System ◽  
Potential Alternative

Interest of renewable energies is increasing due to the revising the energy policies for fighting against the emission of Carbon-dioxide. To make the development of the civilization sustainable and cause less harm to the environment, clean energy resources are very important. Many alternative renewable energy resources are available that can be used instead of fossil fuels. Solar energy is one of the potential alternative renewable energies. This paper presents differents types of Photovoltaic cell materials which is one of the most effective parameter for improvement of photovoltaic cell as well as Photovoltaic system performance.

scholarly journals Air Terminal Design using Photovoltaic Panels with Energy Conservation Optimization Approach

2018 ◽  
Vol 8 (02) ◽  
Author(s):  
Sahar Bayat ◽  
Seyed Abbas Yazdanfar ◽  
Seyed Bagher Hosseini
Keyword(s):  
Energy Efficiency ◽  
Fossil Fuels ◽  
Building Materials ◽  
Direct Conversion ◽  
Photovoltaic System ◽  
Maximum Efficiency ◽  
Photovoltaic Module ◽  
Optimization Approach ◽  
The Sun ◽  
Photovoltaic Panels

Today, excessive consumption of fossil fuels in architecture, especially air terminals and with the increase in the number of terminals along with population growth, the energy shortage crisis in the not-so-distant future in this high-use structure predicted. Therefore, the present study aims was designing an air terminal using photovoltaic panels with an energy efficiency optimization approach. The most important energy efficiency of the sun is its direct conversion to electricity. One of the systems for direct conversion of energy from radiation to electrical energy is the photovoltaic system. Advantages of using photovoltaic panels have led to the growing use of these plates at various scales. In addition, the use of photovoltaic panels as structural elements in architecture has created innovations in the building industry and has given a new meaning to the architecture. The use of photovoltaics in terminals is a smart method to bring contemporary architecture to a new concept in green architecture. Finally, we can say that photovoltaic module has a double function in the terminal; that is, photovoltaic module also replaces conventional building materials and they produce electricity. By replacing photovoltaics, cost of materials is deducted from the total cost of the building and the cost of the photovoltaic acquisition is partially offset. Such as the integration of photovoltaics with the roof which is the best way to get the maximum efficiency of the system in which the sun is perpendicular to it.

scholarly journals Overview of the Use of Sustainable Energies in Agricultural Greenhouses

2016 ◽  
Vol 8 (3) ◽  
pp. 36 ◽  
Author(s):  
John Vourdoubas
Keyword(s):  
Fossil Fuels ◽  
Climate Changes ◽  
High Efficiency ◽  
Waste Heat ◽  
Economic Benefits ◽  
Heat Pumps ◽  
Renewable Energies ◽  
Low Carbon ◽  
Renewable Energy Resources ◽  
Energy Technologies

<p>Global concern on environmental problems like climate changes has altered our energy patterns promoting non-polluting renewable energies instead of fossil fuels. Technological advances in sustainable energy technologies allow their increasing use in all sectors of everyday life. Agricultural greenhouses utilize energy for heating, cooling and operation of various electric devices. The highest amount of energy used in greenhouses is consumed in heating them. Controlling crops growth conditions including temperature results in higher productivity and in better economic results. Various sustainable energies including renewable energies and high efficiency and low carbon energy technologies have been used in commercial scale and the technical and economic viability of others has been investigated in experimental scale. Among renewable energies solar energy, biomass and geothermal energy can be used in order to cover part or all of the energy requirements for heating, cooling and power generation of greenhouses. Energy efficient and low carbon technologies like co-generation of heat and power, heat pumps, fuel cells but also waste heat can be used also for energy generation in them. Governmental energy incentives for the promotion of sustainable energies like feed-in tariffs or net-metering allow the use of the abovementioned energy technologies for electricity generation in greenhouses offering additional economic benefits to the farmers. Use of the sustainable energies which are mature, reliable and cost effective in greenhouses results in mitigation of climate changes, use of local renewable energy resources instead of fossil fuels and better profitability of the cultivated crop.</p>

ENHANCEMENT OF PHOTOVOLTAIC SYSTEM PERFORMANCE BASED ON DIFFERENT ARRAY TOPOLOGIES UNDER ‎PARTIAL ‎SHADING CONDITIONS‎

2021 ◽  
Vol 40 (1) ◽  
pp. 49-62
Author(s):  
Abdelrahman M. Mohamed ◽  
Abou-Hashima M. El-Sayed ◽  
Yehia S. Mohamed ◽  
Husam A. Ramadan
Keyword(s):  
System Performance ◽  
Photovoltaic System ◽  
Partial Shading

scholarly journals An Experimental Investigation on the Effect of Ferrous Ferric Oxide Nano-Additive and Chicken Fat Methyl Ester on Performance and Emission Characteristics of Compression Ignition Engine

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 265
Author(s):  
Ameer Suhel ◽  
Norwazan Abdul Rahim ◽  
Mohd Rosdzimin Abdul Rahman ◽  
Khairol Amali Bin Ahmad ◽  
Yew Heng Teoh ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Ferric Oxide ◽  
Fossil Fuels ◽  
Specific Energy Consumption ◽  
Experimental Results ◽  
Compression Ignition ◽  
Gas Temperature ◽  
Compression Ignition Engine ◽  
Performance And Emission ◽  
Chicken Fat

In recent years, industries have been investing to develop a potential alternative fuel to substitute the depleting fossil fuels which emit noxious emissions. Present work investigated the effect of ferrous ferric oxide nano-additive on performance and emission parameters of compression ignition engine fuelled with chicken fat methyl ester blends. The nano-additive was included with various methyl ester blends at different ppm of 50, 100, and 150 through the ultrasonication process. Probe sonicator was utilized for nano-fuel preparation to inhibit the formation of agglomeration of nanoparticles in base fuel. Experimental results revealed that the addition of 100 ppm dosage of ferrous ferric oxide nanoparticles in blends significantly improves the combustion performance and substantially decrease the pernicious emissions of the engine. It is also found from an experimental results analysis that brake thermal efficiency (BTE) improved by 4.84%, a reduction in brake specific fuel consumption (BSFC) by 10.44%, brake specific energy consumption (BSEC) by 9.44%, exhaust gas temperature (EGT) by 19.47%, carbon monoxides (CO) by 53.22%, unburned hydrocarbon (UHC) by 21.73%, nitrogen oxides (NOx) by 15.39%, and smoke by 14.73% for the nano-fuel B20FFO100 blend. By seeing of analysis, it is concluded that the doping of ferrous ferric oxide nano-additive in chicken fat methyl ester blends shows an overall development in engine characteristics.

PV-module Soiling as a Main Photovoltaic System Performance Suppressor

2020 ◽  
Author(s):  
Yasuhiro Matsumoto ◽  
Marco A. Ramos ◽  
Jose A. Urbano ◽  
Miguel A. Luna ◽  
Nun Pitalua-Diaz ◽  
...  
Keyword(s):  
System Performance ◽  
Photovoltaic System ◽  
Pv Module
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