90% OFF Price For Poly-crystalline Solar Panel 250W to Afghanistan Manufacturer
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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
Spotted a Solar Updraft Tower kit in the shops and thought I could probably make one from scratch. I couldn’t find any black card and I failed to make a nice spiral spinney thing and it was raining today so no chance of testing it in sunlight, not that there would be enough sunlight this time of year. It does work with a simple propeller and using a spotlight to heat the tower.
SAFETY NOTE: The spotlight could easily overheat the cardboard and possibly cause a fire so DO NOT LEAVE THIS UNATTENDED
Main components
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Black card would be best
I used a pin for the balance point, any reasonably pointy item should do.
Finding some suitable shapes for the propeller/fan spinning thing might be a good idea.
Here is a link to the kit that gave me the idea
http://www.thamesandkosmos.com/products/ig/ig_stl.html
A quick search on YouTube finds plenty of videos on the subject. RimstarOrg did a good series on trying to turn a PC fan with a solar tower, here is number 7 in his series https://youtu.be/OiARUwLPGdU
Main Tools
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Scissors
Glue might help
Camera FujiFilm FinePix S4800
Editor Serif MoviePlus Starter Edition
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Heat Engines playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB3dLcu_lXcsakyaaI6SNTZn
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I have thousands of videos on YouTube, to find one try my search guides https://youtu.be/ceBSOoOHcgw or https://youtu.be/Zj4UgwkwYRk
My “GrandadsOtherChannel” channel is generally where I will host the videos that give extra detail or longer versions of the videos I post on my main channel https://www.youtube.com/c/GrandadsOtherChannel
Facebook https://www.facebook.com/grandadisanoldman/
Merchandise – Check both of these links if you are interested as the prices will vary and the shipping charges will be different.
http://www.redbubble.com/people/grandadiaom/portfolio
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