Commercial Solar Panels:Mono Solar Panel 20W A Grade with Cheapest Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 watt
- Supply Capability:
- 1000 watt/month
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Specification
Material:
Monocrystalline Silicon
Max. Power(W):
20
Number of Cells(pieces):
36
Mono Solar Panel 20W A Grade with Cheapest Price
product description
A solar cell, or photovoltaic cell (in very early days also termed "solar battery"[1] – a denotation which nowadays has a totally different meaning, see here), is an electrical device that converts the energy of lightdirectly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
Solar cells are described as being photovoltaic irrespective of whether the source is sunlight or an artificial light. They are used as a photodetector (for example infrared detectors), detecting light or other electromagnetic radiation near the visible range, or measuring light intensity.
In contrast, a solar thermal collector supplies heat by absorbing sunlight, for the purpose of either direct heating or indirect electrical power generation from heat. A "photoelectrolytic cell" (photoelectrochemical cell), on the other hand, refers either to a type of photovoltaic cell (like that developed by Edmond Becquerel and modern dye-sensitized solar cells), or to a device that splits water directly into hydrogen and oxygen using only solar illumination.
Feature
The modules use high-quality imported polycrystalline or Polycrystalline solar panel;
Enclosed by high-rigidity tempered glass, with excellent light transmittance and output performance;
Surface treated with reflection-reducing process, increasing the light absorption.
Back sealed with anti-aging EVA, resistant from moisture and corrosion.
The efficiency of our Polycrystalline solar cell is over 17%, and polycrystalline panel is over 16%. We stipulate, the allowance of each panel’s rated power has to be positive. Each panel is strictly tested before leaving the factory.
Our solar panel is designed with a lifetime of 25 years, and guaranteed that the power decline less than 10% within 10 years, and 20% within 20 years.
Packaging
28pcs into one box 48pcs into one pallet.
Delivery
20 days after received full payment
Payment term
LC&TT
- Q:I am doing a school project and we need to find the cost of solar panels for our school. The problem is i don't know what size the system needs to be. Is it 000 watts or 000000 watts?Also can you find the cost of the system?Thanks
- Without them providing the amount of energy your school uses then it's impossible to know how many panels you would need. Just phrase it in the form of how much space or how many panels would be needed to create (X) amount of power. Ask the amount the school uses then go from there. Let's put it this way, with today's solar technology you would probably have to cover most of the roof of the school with solar panels and it still wouldn't be enough to run the school entirely. Never mind the cost of out-fitting a building of that size, it would take far to many years to pay off and would probably never offset the cost of electricity they are paying now considering maintenance, upkeep and replacement costs associated with these systems. If it was that easy and cost effective, they would have already done it. Make sure you squeeze that into your report somewhere. Find out how much electricity costs in your area, its on any electric bill, it should show the cost per Kw/h somewhere (If separated by peak time and non-peak time, your school would be peak time). After you get that and how much the school uses, do the math and include a graph comparison showing the cost of both. You should be able to find the costs of solar panels online somewhere. Do a side by side comparison from start up cost, upkeep and all versus using the current source. Good luck on your report.
- Q:I am curious about how much of the energy that a solar panel of a given size and capacity will produce in it's lifetime, and what fraction of that energy was required to produce it in the first place?
- At present the technology to create silicon solar cells is incredibly energy intensive. It is not logical to compare the cost of oil to the cost of a solar cell because they are not priced according to energy input. Oil has a strong advantage in that it is concentrated solar and geothermal chemical energy that has accumulated over millions of years. The price of oil does not reflect its energy content, but the cost to retreive it. Electrical energy used to produce a Photovoltaic cell is not priced in any proportion to oil. By some calculations it will take about 50,000 KWh of energy produced by the PV cell before it can recover the energy used to manufacture it.
- Q:Can solar panels be used for charging laptops or smartphones?
- Yes, solar panels can be used for charging laptops or smartphones.
- Q:Are there any risks associated with solar panel installation?
- Yes, there are a few risks associated with solar panel installation. Some potential risks include the risk of falling during installation, electrical shock or fire hazards if not installed correctly, potential damage to the roof during installation, and the risk of panels not performing as expected due to factors like shading or poor maintenance. However, these risks can be minimized by hiring a professional installer, following safety guidelines, and ensuring proper maintenance and monitoring of the solar panel system.
- Q:I am planning to run a couple of dc motors on solar current. I have a couple of 450mA 4V, 200mA .5V, 00mA 9V solar panels with me. I need to run a pair of .5A 9V motors. Suggest me a circuit along with other equipments I might require. For your info, I am trying to build a solar powered drone / UAV
- I don't think it is enough solar power. Your motor requires .5A x 9V = 3.5 watts. The solar cells are .450A x 4V x 2ea. = 3.6 watts, .2A x .5V = .3 watts, .A x 9V = .9 watts total solar = 4.8 watts. The problem with connecting the cells in series to get the right voltage, like the two 4V cells in series with the .5 volt cell (total 9.5 volts) is that the .5 volt cell limits the maximum current to only 0.2A. If you paralleled that with the 9V cell, you would get 9 volts at 0.2 + 0. = 0.3A, too low to operate the motor at its design current and voltage. The best you could do is put the two 4V cells in series, and in parallel with the 9V cell (a blocking diode might be a good idea, but probably not required for such a small array). That way you get 8 volts at 0.55 amps.
- Q:Can solar panels be installed on parking lots?
- Yes, solar panels can be installed on parking lots. In fact, parking lots can provide ample space for the installation of solar panels, making use of the otherwise unused area. This not only generates clean and renewable energy but can also provide shade for vehicles, reducing the need for air conditioning and promoting sustainability.
- Q:How much candle lights is required to operate a 205 watt solar panel?
- The intensity of direct sun is about 0,000 foot-candles. It would not be practical to light that many standard candles and put them foot away from the panel, but you could supply that intensity with electric lighting. That's in fact how they establish the power ratings of a given panel; they have a rig that provides a standard test condition of sun.
- Q:So how does a solar panel work? Where does the energy get stored in? How much does one cost for a small 2 family home? How much money would we save on electricity?
- In the short, a solar panel is composed of many solar cells...all tied together and in some sort of a frame for mounting. When energy from the sun hits it, it creates a reaction which can feed electricity through leads to a converter system which takes the Direct Current power and converts it into Alternating Current. If you rewire your house for DC products I suppoes you wo'nt need the converter. but most of these systems are retro-fits. Batteries provide back up source to the system when the sun goes down. So solar is converted to electricity through the panel, which goes to your solar system which both provides power to the house and to recharge batteries. The batteries take over when the sun is down. So you will need to know how much battery capacity you need by calculating the Amp hour rating of your applicances that you normally use at night like Microwave, TV, radio, refrigerator, etc. For some depending on the appliance....water heater (if electric) or stove) then you need to figure out how many panels you need to provide your normal daily energy use, figure out how many batteries you need, set up a distribution system that gives you what you need where you want it and wa la. Once done, you will be off the grid and paying nothing from the electrical utility. Some places due to deregulations allow you to sell excess power to local utilities too, but those systems need to meet tight standards.
- Q:Can solar panels be installed on a carport or parking lot?
- Yes, solar panels can be installed on a carport or parking lot. This is known as solar carport or solar parking lot systems. They provide shade for parked vehicles while generating clean and renewable energy.
- Q:i need to know wat the parts of a solar panel are.
- A solar panel is just a collection of solar cells all wired up in parallel and series to provide a useful voltage. Typical solar cells only provide half a volt, maybe less, so usually you put 2 of them together to get a 6v solar panel or 24 of them to get a 2v panel. Solar cells are made in various ways, the most popular are silicon solar cells which are made with a chunk of silicon with a P-N junction in the middle and contacts on either side. When a photon of light comes in, the energy of the photon is converted to electrical energy. Individually, photons contain a tiny amount of energy, but when you have a solar cell in the sunlight, billions and billions of photons hitting it constantly create a useful amount of electrical energy. Solar panels are incredibly simple!
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Commercial Solar Panels:Mono Solar Panel 20W A Grade with Cheapest Price
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 watt
- Supply Capability:
- 1000 watt/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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