Poly Solar Panel, 250W, 255W High Efficiency

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Shanghai
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TT OR LC
Min Order Qty:
364 pc
Supply Capability:
30000 pc/month

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Item specifice:

Material: Polycrystalline Silicon Max. Power(W): 255 Number of Cells(pieces): 60

Product Description:

Poly Solar panel, solar module, 250W, 255W

Grid-connected photovoltaic power generation system is to photovoltaic systemsconnected to the public grid, achieve grid. Grid-connected PV systems can be divided into large and centralized and decentralized power generation systems and power generation systems small, two systems not require energy storage devices. Currently PV grid integration in the form of the building is a typical case of power generation.


Features:

1) Product name: solar panel / module

2) Solar cell: Mono-crystalline / Poly-crystalline / Amorphous

3) Tempered glass laminated with aluminum frame

4) Life time: 20 - 25 years

5) Temperature co-efficiency:  A=+1,46mA B=-79mV, Rp/p=-0.43

6) Power specification at 1kW/m 2, AM 1, 5

7) Output cable: multi contact connectors

8) Construction:

     a) Front: High-transmission 32mm tempered glass

     b) Back: TPT

     c) Encapsulant: EVA

9) Frame: aluminum

10) Certification: CE, TUV


Module230235240
EncapsulationGlass/EVA/Cells/EVA/TPT
Tolerance+3%
Size and Number of cells156mm×156mm 60(6×10pcs)
Maximum power230Wp235Wp240Wp
Open circuit voltage(Voc)36.00V36.00V36.00V
Short circuit current(Isc)8.59A8.77A8.96A
Maximum power voltage(Vmp)30.00V30.00V30.00V
Maximum power current(Imp)7.67A7.83A8.00A
Model size(mm)1650×991×40MM
Weight19.50Kg
Operating Temperature-40°Cto+85°C
Resistances227g Steel Ball Fall Down From 1M Height and 60M/S Wind
WarrantyPm is not less than 90% in 10 years and 80% in 25 years



ADVANTAGES:


There're 7 major inspection procedures for Each piece solar panel during production : 

3 times EL testing to ensure panel without micro-break/invisible break(normal manufacturer only test 1 or 2 times); 

3 times appearance inspection to ensure panel without defect (normal manufacturer only inspect 1 or 2 times); 

1 time power testing, power inspection tolerance +/-0.1watt(normal manufacturer's power inspection tolerance is +/- 1-2watt), we ensure each panel has enough power output; 

besides the standard inspection, each production procedure will inspect the upwards procedure;

So we guarantee each piece of our panel has perfect appearance, positive power performance, and without quality hidden trouble.


Manufacture pictures:

Poly Solar Panel, 250W, 255W High Efficiency


Poly Solar Panel, 250W, 255W High Efficiency


Poly Solar Panel, 250W, 255W High Efficiency





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Q:how do buildings circulate energy?
The answer depends upon the type of solar energy captured . Photovoltaic Solar Panels convert the energy into electricity. This electricity is ran throughout the building via wires. Thermal Solar Panels typically capture the energy in the form of heat. The hot water is circulated through the building in water pipes.
Q:Why are solar panels only 0% efficient?
Sunlight comes in many frequencies, that's why it's white. Solar Photovoltaics require a photon to displace an electron from a semiconductor and that only happens at one frequency depending on what the semiconductor material is, therefore only one exact frequency gets turned into power. They are working on using organic dyes or quantum dots to absorb the energy in different frequencies and re-emit the energy in the desired frequency. They also are working on using multiple semiconductor materials to try and capture more frequencies. The rest of the energy becomes heat which also reduces the efficiency of the solar cells. The lab record for solar photovoltaics is 42.8% efficiency and quantum dots promises to be 65% to 75% efficient. Keep in mind that fossil fuels are based on energy collected by photosynthesis over millions of years. The efficiency of photosynthesis with modern plants is about 0.5% and the theoretical maximum efficiency of photosynthesis is 6.6%. All of our current energy use is based upon a small fraction of 0.5% efficiency over millions of years.
Q:Is anyone using small solar panels in their home with any practical results?
I okorder.com Hope this helps.
Q:How to build a solar panel?
Building solar panels is not really a do it yourself kind of job. They are made in high tech factorys with specialized equipment and experianced engineers. It would probably be cheaper and easier to just buy some panels rather than try to make your own.
Q:Why solar panels are expensive?
Believe it or not, solar panels are so expensive in this country because of government subsides. Without market competition, companies have no obligation to compete with each other on price. If our government would stop paying people to buy solar panels and giving solar panel companies tax breaks, companies would be forced to lower their price and raise their quality in order to get you to buy their product. This would be true of oil/gas, corn, soy beans and a number of other companies and products as well.
Q:how to build a solar panel?
Build okorder.com
Q:How to install a solar panel system?
If you are grid-tied, then a standard solar electric system will always feed back into the grid if you are not utilizing more power in your home than is being generated by the solar panels and inverter system. It is possible that a grid isolation device designed to prevent direct back feeding is available, but haven't heard of one in common use. New laws in most areas of the US are now mandating that utilities allow grid-tied alternative energy systems. Double-check you local laws. Sometimes you can't take the utilities word for truth--most will automatically say 'no' and will only relent when you show up with the law in hand. Unfortunately, some utilities have figured out another way to shut down alternative energy pioneers--they demand multimillion dollar insurance policies covering damage that their equipment could sustain from your little PV system. Technically, they are still in compliance with the law, they just make it impossible for a homeowner to meet their requirements. If you are getting the runaround, go to your state representative for help. It's amazing how contrite those utility people can be when a state senator (or even US Senator) has just sent a letter asking them why they are stonewalling a law-abiding and well-meaning citizen. Good luck, and don't give up!
Q:solar panel regulator?
wire them in series parallel to get 8 volts at 200 mA, and that should charge a 2 volt battery. You may want to put in a series diode to prevent the battery from discharging into the panel when the sun is out. At 200 mA, depending on the battery size, you may not need much control, as that low a current will not overcharge a large battery, like a small auto battery. In fact it will take a very long time to charge it. edit: But do i need to add a regulator? If by that you mean a voltage regulator, no, as a solar panel has a high output resistance, and that will limit the current into the battery. If you mean a charge controller, if the battery is small, you may need a charge contoller to avoid overcharging the battery. But that is not a voltage regulator. .
Q:Why don't we use solar panels?
Good question. One of the reasons is the greed of manufacturing companies. No matter the profit margin of the product, they seem to want to charge so high a price that the break even point is ten years down the road, so the true savings are few. The cost of solar panels should have dropped way lower than they have by now. I believe that the political correctness of the product will tempt the manufacturers to keep the prices artificially high. One other answerer is right, the panels are very fragile, and damage would destroy the investment, so new inroads need to occur in technology to protect the panels from damage. Somewhere in the middle is a profit for the manufacturers, and savings for the consumer. I hope we find that middle-ground soon.
Q:Were solar panels made by copying how plants collect sunlight?
Solar panels may have been inspired by leaves, by they don't function in the same way. Leaves use the sunlight to make carbon dioxide into carbohydrates. Solar-panels makes sunlight into electricity.

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