Professional China Poly-crystalline Solar Panel 250W for Zurich Manufacturers
Short Description:
With our excellent management, strong technical capability and strict quality control system, we continue to provide our clients with reliable quality, reasonable prices and excellent services. We aim at becoming one of your most reliable partners and earning your satisfaction for Professional China Poly-crystalline Solar Panel 250W for Zurich Manufacturers, We, with great passion and faithfulness, are willing to provide you with perfect services and striding forward with you to create a bright future.
Poly-crystalline Solar Panel 250W
Technical parameter
Maximum Power(W) 250W
Optimum Power Voltage(Vmp) 30.25V
Optimum Operating Current(Imp) 8.26A
Open Circuit Voltage(Voc) 36.61V
Short Circuit Current(Isc) 8.89A
Mechanical Characteristics
Cell Type Polycrystalline 156x156mm (6 inch)
No of Cell 60 (6x10pcs)
Dimensions 1640x990x40mm
Weight 18.5KGS
Front Glass 3.2mm,High Transmission, Low Iron,Tempered Glass
Junction box IP65 Rated
Output Cable TUV 1×4.0mm2/UL12AWG,Length:900mm
Temperature and Coefficients
Operating Temperature(°C): -40°C ~ + 85°C
Maximum System Voltage: 600V(UL)/1000V(IEC) DC
Maximum Rated Current Series: 15A
Temperature Coefficients of Pmax: -0.47%
Temperature Coefficients of Voc: -0.389%
Temperature Coefficients of Isc: 0.057%
Nominal Operationg Cell Temperature (NOCT): 47+/-2°C
Materials of solar panel
1).Solar Cell——Polycrystalline solar cell 156*156mm
2).Front Glass——-3.2mm, high transmission, low iron, tempered glass
3).EVA——-excellent anti-aging EVA
4).TPT——-TPT hot seal made of flame resistance
5).Frame——anodized aluminum profile
6).Junction Box——-IP65 rated, high quality, with diode protection
Superiority: high quality anodized aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail resistance.
Features
1. High cell efficiency with quality silicon materials for long term output stability
2. Strictly quality control ensure the stability and reliability, totally 23 QC procedures
3. High transmittance low iron tempered glass with enhanced stiffness and impact resistance
4. Both Poly-crystalline and Mono-crystalline
5. Excellent performance in harsh weather
6. Outstanding electrical performance under high temperature and low irradiance
Quality assurance testing
Thermal cycling test
Thermal shock test
Thermal/Freezing and high humidity cycling test
Electrical isolation test
Hail impact test
Mechanical, wind and twist loading test
Salt mist test
Light and water-exposure test
Moist carbon dioxide/sulphur dioxide
easy way to have enough power to keep a laptop charged,a cell phone, and a couple Lights. Here is a small solar panel and inverter.
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Graphene is a material made up of single-atom thick sheets of carbon which makes graphene flexible, conductive, transparent and abundant. Currently, researchers are trying to fully incorporate graphene into thin-film solar cells due to graphene’s high conductance and transparency; however, graphene cannot hold an electrical charge as well as some other materials. As a result, scientists are coming up with new ways to process graphene sheets so that they are better suited for use in solar energy applications.
One way to improve the use of graphene in solar cells is to dope the sheets of graphene with oxygen to create graphene oxide which is less conductive but better able to hold a charge. If this technology is successfully developed and executed, it could replace the brittle and rare Indium Tin Oxide (ITO) which is a useful, but very expensive conductor. Another idea that scientists are investigating is stacking multiple sheets of graphene together to increase conductance and charge capacity. This allows less light to penetrate the surface of the solar cells but also increases the charge capacity, allowing the graphene sheets to outperform ITO.
Both of these ideas for graphene usage in solar cells demonstrate the materials science paradigm of processing a material to obtain optimal properties for the application. Our video will talk about the structure of graphene itself and how processing the graphene differently alters the structure of graphene which improves its properties and allows it to perform better in photovoltaic cells. These positive effects of graphene usage in solar cells would clearly benefit the environment by creating cheaper and more efficient solar cells.
Sources Cited in Abstract:
http://www.graphene-info.com/graphene-solar-panels
http://www.graphene-info.com/researchers-say-graphene-will-outperform-ito-solar-panel-transparent-electrode-material
References:
Introduction to solar panels, N-type and P-type semiconductors: http://www.nrel.gov/docs/legosti/old/1448.pdf, http://electronicdesign.com/power-sources/what-s-difference-between-thin-film-and-crystalline-silicon-solar-panels
Image on Page 4 based picture from: https://www.acs.org/content/acs/en/education/resources/highschool/chemmatters/past-issues/archive-2013-2014/how-a-solar-cell-works.html?cq_ck=1396892718960
Intro to current problems with solar cells: http://www.solarpoweristhefuture.com/problems-with-solar-energy.shtml
Solar cells are expensive: http://www.sigmaaldrich.com/catalog/product/aldrich/544876?lang=en®ion=US, http://energyinformative.org/best-solar-panel-monocrystalline-polycrystalline-thin-film/#thin-film-solar-cells,
Current solar panels are not efficient : http://www.solarpoweristhefuture.com/how-efficient-is-solar-energy.shtml, http://energyinformative.org/best-solar-panel-monocrystalline-polycrystalline-thin-film/#thin-film-solar-cells, http://www.mpoweruk.com/energy_efficiency.htm
Properties of Graphene: https://www.graphenea.com/pages/graphene-properties#.WO7aLNLyvb0,
Second Solution: https://phys.org/news/2013-12-graphene-sheets-effective-transparent-electrodes.html
MSE Triangle: http://www.graphenomenon.com/, https://www.scientificamerican.com/article/balancing-act/
Image Credits (in order of appearance):
https://www.extremetech.com/wp-content/uploads/2015/07/graphene-head.jpg
https://www.sciencedaily.com/releases/2016/09/160928151119.htm
https://commons.wikimedia.org/wiki/File:Illust_poly_thinfilm.gif
Custom images/animation by our team
https://brainmass.com/hubsimg/1477377/carbon.jpg
https://www.graphene-info.com/graphene-solar-panels
https://www.researchgate.net/profile/Shine_Augustine/publication/276394214/figure/fig2/AS:294624238292993@1447255300638/Figure-3-Molecular-structure-of-i-graphene-ii-graphene-oxide-Graphene-exhibits-a.png
http://www.aerogelgraphene.com/graphene-solar-panels-2/
http://daais.sinica.edu.tw/english/publication_list.php?yearId=11
https://www.graphene-info.com/graphene-solar-panels
http://www.industrialheating.com/ext/resources/Issues/Issues2/2017/Jan/ih0117_mct_fig1-900.jpg
https://s-media-cache-ak0.pinimg.com/originals/f7/76/be/f776bef5ea60f056da26d4204bcc8cc1.jpg
https://www.sciencedaily.com/releases/2016/09/160928151119.htm