Polycrystalline silicon solar panel(CR020P)

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Product Description:

High-efficient solar cells
High transmissivity low-iron toughened glass
Anodized aluminum frame
Water resistant junction box
Design to meet unique demand of customer
25 year poweroutput warranty

In the series, the products description is as follows:

cell dimension:156mm*156mm

number of celles and connections: 6 (4*9)

panel dimension: 536*353*30(mm)

per weight: 2.6 KG

junction box type: PV-GZX0502

cable and asymmetrical lengths: NANYANG(1.5mm2), 300mm(-)and 300mm(+)

connection: MC4

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Q:Build your own solar panel, scam or truth?
What I've heard, is that for those sites implying that you can power your house and save money with homemade solar panels, is that if you try to get your money back, there is no response. Maybe if you used a real credit card, you could dispute the charges through your credit card company. Actually, I wouldn't be worried about buying materials and it not working - the more likely scenario is that you would get their instructions, and realize that they're practically worthless. In Florida, you have a chance to save money on your electric long-term, but it will be by investing maybe $0-20k, and then getting that back after 0 or more years. I'd suggest you contact a local solar installer and get a bid, even if it's only to scope out how much it would cost up front. Then you can shop around and see if you could save by installing it yourself. It's a serious project, not to be taken lightly. It took me about 3 months to put it up. It's possible that you will not save money by self-installing, as professionals may get better prices on the panels. The Florida state rebate is subject to availability of funds, and typically, I've heard people wait a long time to get it. The Federal rebate is a credit to your taxes, so you get it the next year.
Q:Advantages and Disadvantages of using solar panels?
Initial cost , space occupied AND DAILY CYCLE (unless through a battery) are the only disadvantages. REST ARE ALL ADVANTAGES
Q:Solar Panels heat absorption?
Solar panels . Are you talking about solar cells or panels ? Solar panels can be either for hot water or electricity but i take it your talking about solar cells that make electricity . Heat has nothing to do with making electricity . In fact when they heat up they give out less so its good to keep them cool . With size they give out equal amounts of volts but less amp the larger the more amp you get. Solar cells work with white light that knock the electrons around that produce electricity . To much such as putting a magnifying glass on them will burn them up but will kick out twice the volt but only for a short amount of time before they burn up . If you can keep them cool with an intense light like that im not sure what they will do but to much heat will destroy them. Edit: Yep you got that right . As far as the desert to make up for the loss of volts because of the heat they just add a few more cells . Say there going for 2 volt it takes 24 cells because each gives you /2 volt but most use around 36 cells if not more . That would give you 8 volt then a regulator regulates the amount going into the battery . Most will put 3 volt into the battery to 4 volt . Freezing temps aren't going to do a thing to them as long as the sun hits them without snow covering them . I build mine with 40 cells getting 20 volt and a bit more on some . That way if its a cloudy day i still get over 3 volt and plenty of amps .
Q:Best orientation for my solar panel?
Typically, solar panels are installed facing the same as your latitude = 2 degrees to the North measured from horizontal. 60 degrees from vertical = 30 degrees from horzontal will give almost as much power in June as in December = beginning of Summer. You can face your panels straight up = zero tilt from vertical = better for December/ not so good in June. Usually, the same tilt as your North facing roof is best as it simplifies installation and reduces wind loading. Shade from trees etc will much reduce the power you get. Neil
Q:How do solar panel power systems work?
There are two kinds of solar panel power systems, one is on-grid solar power system, the other is off-grid solar power system. The on-grid solar power system: the solar panel convert sunlight into DC electric, and the DC electric is converted into AC electric by inverter, one part supply for the household load, the other supply to power grid. The off-grid solar power system: the solar panel convert sunlight into DC electric, and charge for the battery or supply for the DC load by controller, if have AC load, it need a inverter to convert DC into DC.
Q:how much does solar panels cost for you home?
Although its costs have been going down a little, solar power is still pretty expensive. To power a home you are looking at at between $8000 to $20,000 dollars (it will eventually pay for itself). There are systems that tie into the existing local power supply so that you have the city's power for back up (note: most power companies will buy electricty from you if you make more than you use). Then, of course, there are stand alone systems that operate without anyother power source (these are best for use in a place where electric lines aren't available or practical).
Q:Pls is it ok to connect a 0watt and 20watt solar panel together into a charge controller port?
Tobi, generally yes, solar panels are like beer, all the europeans get along fine, you can put two Belgiums in the same room as one German and three Englishman. As long as the panels have roughly the same open circuit voltage, usually around 8 volts, then go for it. If you're not sure about this, or the panels voltage disagrees dramatically, then they can still work through the same charge controller, the only other thing you need is a bypass diode in the junction box on the back of each panel. Most modern panels come with these already installed. They are simply electrical check valves, allowing current flow in one direction but not the other. The reason these matter is when the sun is first coming up, the higher voltage panel can force its power backwards through the lower voltage panel, at least until they both reach a voltage higher than the charge controller is set at. This is not a desirable thing to have happen, the 20 watt panel, if its voltage is higher, can damage the 0 watt panel without these diodes if the 20 watt has a much higher open circuit voltage, or Vmax. Look on the back of the panel for these ratings. The only other concern is maximum current. A charge controller has a maximum current it can handle, they are generally model numbered this way, a Xantrex C-60 for example has a 60 amp rating. Add up the Imax numbers on the back of all your panels, this is the maximum amperage the panel should put out. As long as it is not above 80% of your charger controllers maximum amperage, your good. Take care, Rudydoo
Q:How much was the price of solar panels 5 years ago compared to now?
For just 5 years ago, certainly not! Perhaps you are thinking of 50 years ago, the kind that was put on the early communication satellites? 5 years ago, there was a glut of polysilicon, so modules were actually a little cheaper than today. Solar cell makers were basically using the scraps thrown away by chipmakers. But today, more silicon goes into making solar cells than computer chips, so that bonanza is gone. We will see prices going lower this year, possibly 20% from last year, because of improvements in technology, but also an increase in polysilicon supply, and a slowdown in demand due to worldwide recession. Later this year is a good time to buy panels, if you have the cash. The industry site below tracks module prices. They used to have more data, but I guess the old data rolls off the screen with time. If you want to see the details, they'll charge you for the report.
Q:How to wire solar panels?
I'll add a few comments to Teelo's It may not be good to connect the assembled solar cells directly to the battery. When there is no sun I think it will drain the battery. I'm pretty sure all circuits I have seen have a reverse polarity diode in series. (unless Teelo knows for sure). Hmmm Reminds me that I have some bare solar cell elements from when Motorola was making them. I used some to power a small radio controlled car. I do know that all good applications have a regulator to make sure the charging is done properly
Q:Can solar panels be connected directly to motor?
The sun is irradiated on the semiconductor p-n junction to form a new hole-electron pair. Under the action of the p-n junction electric field, the holes flow from the n region to the p region. The electrons flow from the p region to the n region, and the current is formed after the circuit is turned on.

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