solar module 250W

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Q:solar panels, wattage?
The easy way is to just use the power values. You need 4500W. Each solar panel delivers 00W (from a value in your working). Therefore you need 4500/00 = 45 solar panels. This is a crude calculation, ignoring efficiencies, voltage conversion losses and losses due to internal resistance. You would probably need quite a few more than 45 panels. ___________________________ I'll explain how to do the calculation your way. Each solar panel delivers 00W with a voltage of 2V. So the current is 00/2 = 8.333A. Each solar panel delivers 8.333A at 2V. But you require 8.75A at 240V panel delivers 00W. To get 4500W, you need: 8.75/8.333 = 2.25 times more panels to increase the current AND 240/2 = 20 times more panels to increase the voltage. So overall you need 2.25 x 20 = 45 panels. Of course if the power output of each solar panel is not 00W, you have to change the above calculation accordingly.
Q:Hi trying to learn more about Solar panels!?
Solar panels do not store power. Solar panels convert sunlight into electricity. To store power you need batteries. The usual type of batteries used are lead-acid deep discharge( similar to car batteries). The batteries are charged up during the time the sun is out. However, as a backup you could also have a generator handy to provide power for times when the sun did not shine enough to keep the batteries charged up.
Q:How much do solar panels usually cost?
You can log in alibaba,i purchased about 20000watts 2 years ago and solar panels work efficiency is fairly high. I hope my answer help you !
Q:What equation would i need to determine the raise in temperature of water going through a thermal solar panel?
solar panels don't store energy, they only generate it. If you want to store energy you need a battery bank of some kind to get you through the night and anytime the sun isn't shining. If you have a little extra in the budget you might look at a geothermal system for your home's heating and cooling needs. They're highly efficient systems and you can supplement however you like. Whatever you do, though I hope you have a good building envelope in place already. Solar panels are cool, but if you have a leaky house, you're still not getting the best out of your panels. Do the more mundane stuff first. Insulation, windows, and weather-tight doors.
Q:How does a solar panel charge controller work for batteries?
The battery is probably 2v 7amp-hour, not 7 amp. 7amp-hour is basically just how big the battery is. You can charge that battery with as little current as you want, it'll just take longer. The 7 amp-hour tells you that it'll take a long time to charge. 7 amp-hour means it can discharge 7 amps for hour. If you were charging it at 7 amps, it would take hours to charge, but I don't recommend that. You could charge it at .5 amps for 4 hours or .25 amps for 28 hours. The smaller the current, the longer it will take, but it will get there eventually assuming your voltage is high enough (which it should be with the charge controller).
Q:Photodiode vs solar panels?
Yes, so are camera sensors. Except in cameras they're specially desgined to reduce noise.
Q:What type of wires should i use for a solar panel?
Most epoxy is not very conductive. I would go with solder.
Q:solar panels disconnected from battery?
Know that solar panels almost always incorporate a blocking diode to prevent a battery from back-feeding through an un-illuminated panel. Know that solar panels are usually connected to a battery via an electronic switching charge controller, not directly connected. Know that when a solar panel is open-circuited (disconnected from everything) it's terminal voltage will rise to almost twice it's nominal voltage. (22V is common for a 2V panel), unless it is stored in total darkness.
Q:I need help with a solar panel?
You not only need a diode, but a circuit that opens the circuit if the voltage falls below a certain level. The diode is not the problem, but the batteries powering the solar panel when the voltage falls to low.
Q:selling solar panels online - a good idea?
My guess is that you might find everything related solar power at www.okorder.com.

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