• 280W High Tech Poly Solar Panel with China Factory Price System 1
  • 280W High Tech Poly Solar Panel with China Factory Price System 2
  • 280W High Tech Poly Solar Panel with China Factory Price System 3
280W High Tech Poly Solar Panel with China Factory Price

280W High Tech Poly Solar Panel with China Factory Price

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
400 watt
Supply Capability:
1000 watt/month

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product description

 

Currently, polysilicon is commonly used for the conducting gate materials in semiconductor devices such asMOSFETs; however, it has potential for large-scale photovoltaic devices.The abundance, stability, and low toxicity of silicon, combined with the low cost of polysilicon relative to single crystals makes this variety of material attractive for photovoltaic production. Grain size has been shown to have an effect on the efficiency of polycrystalline solar cells. Solar cell efficiency increases with grain size. This effect is due to reduced recombination in the solar cell. Recombination, which is a limiting factor for current in a solar cell, occurs more prevalently at grain boundaries, 

  • Base stations - for mobil and internet provider

  • Military and Paramilitary base stations

  • United Nations and other Humanitarian Aid & Relief Agencies

  • Mining Contractors (exploration/drilling)

  • Emergency Services (Natural Disaster Organisations)

  • Road, Bridge, Pipeline Construction Organisations

280W High Tech Poly Solar Panel with China Factory Price

280W High Tech Poly Solar Panel with China Factory Price

280W High Tech Poly Solar Panel with China Factory Price

product characteristic

 

The E-series photovoltaic module comes with a 90% (12-year) and 80% (25-year) of rated minimum peak power warranty and a 10-year warranty on workmanship and materials

 

Positive power tolerance 0 to +5W

10 year product workmanship warranty
 Upto 25 year linear power warranty of minimum peak power
 Proven eld performance worldwide

 Internal by-pass diodes across 20 series cells resists effects of shading
 Passed 3rd party testing: Salt spray and Ammonia resistance
 Conforms to UL 1703, ULC-ORD-C1703-01 and CE

 

detail parameter

280W High Tech Poly Solar Panel with China Factory Price

 

technological process

280W High Tech Poly Solar Panel with China Factory Price

280W High Tech Poly Solar Panel with China Factory Price

280W High Tech Poly Solar Panel with China Factory Price

280W High Tech Poly Solar Panel with China Factory Price

 

package&delivery

we pack goods with pallets and carton box

each one will be carefully examined by our staff.

 

 

Q:Can solar panels be installed on universities or educational campuses?
Yes, solar panels can certainly be installed on universities or educational campuses. In fact, many educational institutions worldwide have already embraced solar power as a sustainable and renewable energy source. Installing solar panels on campuses not only helps reduce carbon emissions and combat climate change but also serves as a great educational tool for students to learn about clean energy and sustainability. Additionally, universities can benefit from cost savings on electricity bills and even generate surplus energy that can be fed back into the grid.
Q:Can solar panels be installed on a residential community?
Yes, solar panels can be installed on a residential community. Many residential communities are adopting solar energy as a sustainable and cost-effective alternative to traditional electricity sources. Installing solar panels in residential communities can help reduce energy costs, decrease reliance on fossil fuels, and contribute to a cleaner and more sustainable environment.
Q:What is the efficiency of solar panels?
The efficiency of solar panels refers to their ability to convert sunlight into usable electricity. The efficiency can vary depending on the type and quality of the panels, but most modern solar panels have an efficiency of around 15% to 20%. However, advancements in technology have led to the development of highly efficient panels that can achieve efficiencies of up to 40%.
Q:How do solar panels affect the roof warranty?
Solar panels can affect the roof warranty in some cases. The installation of solar panels usually requires drilling holes into the roof, which may void certain parts of the warranty. However, many reputable solar companies offer their own warranty and insurance to cover any potential damages caused during installation. It's important to review the terms of both the roof warranty and the solar panel warranty before proceeding with the installation to ensure that you understand any potential impacts on the roof warranty.
Q:Got a small project here in a remote location. There is to be a 2 volt deep cycle battery, the equipment to be powered from battery and solar panel to charge battery. The 2 volt battery puts out 55 AH. the max constant power draw from the equipment to be powered is 7.9 watts. Will a 30 watt panel at 2 volts be enough to run this system during sunlight and charge the battery for the equipment to run overnight?And, at 55 AH, how long can I keep a constant draw of 7.9 watts without a recharge?Thanks to all the input!
Will a 30 watt panel at 2 volts be enough to run this system during sunlight and charge the battery for the equipment to run overnight? Maybe theoretically, but you're going to have very little margin for losses and clouds. I'll bet it has very little power when cloudy. 7.9/30 = 0.26. So at 00% efficiency, you'd need it to be charging more than 25% of each 24 hour period. In a summer with long days and a climate with few clouds, you might make it. But I think you're very close to the edge. And, at 55 AH, how long can I keep a constant draw of 7.9 watts without a recharge? For an ideal battery: time = Q V / P time = 55 A h * 2V / 7.9W time = 83 hours So you've got pretty good margin on your battery.
Q:All I ever heard is how easy it is to get solar panels for a persons home. I live in Arkansas and to do my house it would cost 25000 that I dont have and No state incentives. So where do I go and get these free solar panels? Thanks for the help
Sorry this is so long. I live in north west arkansas. I have solar on my home. I installed them myself. Did not cost me anywhere near 25 grand. Solar will pay you back if you get incentives or not. I have said this a hundred times but people just don't seem to understand or can't do the math. You are renting from the public utility. You have nothing in the end but a stack of payment stubs. There is no way to get a return on your investment. You paid them money and have nothing. Nothing at all .. Well maybe good service. But still nothing. If you check it out most solar electric systems last 30 years or longer. If your electric bill is 00 dollars a month. do the math. 00 dollars a month for 30 years is $36,000 dollars you would normally pay the public utility. So why not buy your $25,000 system, you just made $0,000 right there on the spot. Now add in 3.5% cost of living per year for each year for the next 30 years on that 35,000 you pay the public utility. Then you have to keep in mind you do not pay taxes on any electric you make yourself. You do not pay fees on your own power. You do not pay the cost of fuel incresses every time the price of oil goes up. In the end you saved $00,000. So it is free even if Arkansas don't give free handouts like other states. I even know people who say they are waiting for some one to make a cheaper solar module. That will not happen because even if they make it for half the cost (like evergreen is doing) it will still be sold at standard market value not production cost. The real problem with solar is it is hard to come up with the upfront cost. But renting solar panels is comming but that is the same as just renting power from the public utility. I wish you luck but it will be a while before Arkansas will make any moves on renewables. They just in 2007 made it law that the public utilities have to let your roll your net metering over to the next month if you over produced.
Q:I hooked up a 2V solar panel to a small relay. The relay switches at 9V. When I have light shining on the panel it puts out aorund 3-4V, but when I hook it up directly to the relay it drops to V and doesn't switch the relay. Why? and How do I fix it?-2V Mono-Crystalline Solar Panel -JWD 7 4 reed relay
There is no ampere output listed for the solar panel. There is specs indicating the relay has a 200 ohm coil. This means the current required for the relay is 0 ma. The solar panel should supply that much. Check the resistance of the relay coil. It sounds like you have the relay coil in series with another resistance, such as a loose connection or a corroded connection. If you can, disconnect the wires from the solar panel and twist the two wires connected to the relay coil, and read the resistance of the two wires connected at on end. A high resistance will indicate a problem in the wires. TexMav
Q:How do solar panels affect the homeowner's insurance policy?
Solar panels can have an impact on a homeowner's insurance policy as they are considered an additional structure or improvement to the property. While they may increase the overall value of the home, they also introduce potential risks such as damage from storms or accidents. Homeowners should inform their insurance provider about the installation of solar panels to ensure adequate coverage and potentially adjust their policy accordingly.
Q:I was looking at thin flexible solar panels as solar panels 500w a option to upgrade a 20w solar panel I have permanently mounted to the roof of a home made camper van.Why I was thinking flexible is at just 2mm thin they can be glued down and being flexible they will follow the contour of the rounded shape of the roof of my camper (boxy standard solar panel spoils the lines a little)Another reason is no glass to brake when traveling on dirt tracks(though I am surprised mine hasn't broken yet after thousands of km on corrugated dirt roads). Finally there is a weight saving at only /3 the weight or less then a standard glass panel.There are different grades of flex PV some of the more expensive ones are very flexible with extremely thin backing at around .5mm The ones I was looking at are cheaper and at around 2mm with a thin flexible aluminum backing.$250 is about the going rate for 20w OKorder job. Below is a pic of a smaller one 60w or so.Has anyone had any experience with them?
but it's very interesting and I wanted to ask you. In your case this is good solution, but I saw flexible panels in OKorder much cheaper than 250$. This is the price of standard solar panel 20w. Maybe your panels with better efficiency? I know that flexible panels are less than half efficient than regular panels, thats why you need twise more area to get the same output. What is your usage of this energy in this van? I know there are many ideas of solar cars, but if this solution is efficent enough today? Thanks!
Q:How much energy can solar panels produce?
The amount of energy that solar panels can produce depends on various factors such as the size and efficiency of the panels, the location and climate, and the amount of sunlight available. On average, a typical residential solar panel system can generate between 10 to 20 kilowatt-hours (kWh) of electricity per day. However, larger commercial systems or those installed in regions with abundant sunlight can produce significantly more energy.

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