first of all, to be honest i have totally no idea on how a solar panel works.my task is to design something like a solar powered street lamp which store sun energy during day time and convert it into electrical energy then light energy so that the lamp can work during night time.any ideas on how to design the solar panel? which can store enough or more enegry in case there is no sunlight another day. and low cost as well :D
image voltaic panels do no longer shop capability, they basically generate it. in case you opt to shop capability you like a battery economic enterprise of a few sort to get you for the time of the night and each time the sunlight isn't shining. in case you have somewhat extra in the fee selection you would be able to desire to look at a geothermal equipment to your place's heating and cooling needs. they are distinctly useful structures and you'd be able to supplement notwithstanding you like. notwithstanding you do, in spite of the indisputable fact that i'm hoping you have a sturdy construction envelope in place already. image voltaic panels are cool, yet once you have a leaky homestead, you're nevertheless no longer getting the final out of your panels. Do the extra mundane stuff first. Insulation, homestead windows, and climate-tight doorways.
solar panels change light into electricity, and do NOT store power. You need a solar panel capable of enough power to keep the light on all night. And that may be 6 hours of sun and 2 hours of dark. Then you need a set of batteries large enough to hold that energy. And a charge controller to regulate the charge into the batteries. And then a light that will operate on the battery voltage, say 2 volts. This is probably not practical due to the large solar panel required, and the large batteries. But here is a few numbers. Assume a 00 watt light at 2 volts. Assume you get at least 6 hours of sun every day and the light will be on for 2 hours. That means the battery has to store 00*2=200 watt hours. divide by 2 and that is 00 amp-hours, a large auto battery size. Allowing for 20% losses in the battery and circuitry, that means you nee 400 watt hours from the solar panel. Since it has 4 hours to operate, that means it has to deliver 400/4 = 350 watts at 5 volts. So there it is: 350 watt panel 00 amp hour battery charge controller sized for above 00 watt light. If you have to allow for a day with no sun, then you need more batteries. Two nights means 2400 watt-hours, two batteries, a larger charge controller and a 2800/4 = 700 watt panel. cost: $400 for batteries $200 for charge controller $2000 for panel .
solar panels are designed to charge 2v batteries, now depending on the power you need you can determine what kind to use there are many power ratings for the modules, for example if you want to charge two 2v batteries you can connect them in parallel, if you want to reduce the charging time you can use more than one module in parallel to increase the power.
