Solar Energy » solar energy panel

Solar panel energy production?

admin — Thu, 05 Jan 2012 07:24:45 +0000

Does it take more time for a solar panel to produce the same amount of energy you would quickly generate with a normal electrical outlet?

A standard electric outlet is 120 Volts and will produce up to 20 AMPS. One average solar panel will produce maybe 100 Watts at peak power (The sun at just the right angle on a very clear day). 100 Watts is like one(1) light bulb of light. The wall outlet will produce maybe enough power for 24 of those same light bulbs, and will do it 24 hours a day. Power (Watts) = Voltage X Amps

How much energy can solar panel produce?

admin — Tue, 27 Dec 2011 06:18:09 +0000

I am doing a project on solar panels.

All information given has to be accurate.

May I know how much energy can monocrystalline, polycrystalline, amorphous, vaporware solar panel produce? I also want to know more about solar panels. For example, how did Americans use solar panels during autumn and winter? Is the solar panel used in their everyday life?

Why can’t S’pore use solar panel even though we experience hot weather all year round?

Cost and energy generated by solar panel?

admin — Fri, 19 Aug 2011 20:33:09 +0000

I want to install a solar panel on my car. I want to know that how much energy can be generated by a panel of size 4 foot by 6 foot. and the cost of installation.

A little more than 10 watts per square foot, so that size panel would generate 250 watts under ideal conditions, which is noon on a sunny but not too hot day, near the equator. That’s about 1/3 horsepower, or the same power as a man working hard.

That is larger than needed to keep the battery of the car charged, unless you plan to run a laptop or something off it at night. The power is also too small to power the car for driving. If it’s an electric car, you could get maybe another 2 miles per day out of the car, again, under ideal conditions.

An RV store might have an idea of how much installation would cost. They would be accustomed to solar panels for RV’s, but probably not small cars. A panel of that size would cost perhaps $500-800 just for the panel.

If there are solar energy panels, is there anything to save water?

admin — Fri, 29 Jul 2011 09:43:35 +0000

I know there are solar energy panels and wind turbines but is there anything for water? Also, how much money would you save a year if you installed a solar panel and wind turbine? No rude comments.

to save water .here r some methods
Water-saving technology for the home includes:
Low-flow shower heads sometimes called energy-efficient shower heads as they also use less energy,
Low-flush toilets and composting toilets. These have a dramatic impact in the developed world, as conventional Western toilets use large volumes of water.
Dual flush toilets created by Caroma includes two buttons or handles to flush different levels of water. Dual flush toilets use up to 67% less water than conventional toilets.
Saline water (sea water) or rain water can be used for flushing toilets.
Faucet aerators, which break water flow into fine droplets to maintain "wetting effectiveness" while using less water. An additional benefit is that they reduce splashing while washing hands and dishes.
Wastewater reuse or recycling systems, allowing: Reuse of graywater for flushing toilets or watering gardens
Recycling of wastewater through purification at a water treatment plant. See also Wastewater – Reuse

Rainwater harvesting
High-efficiency clothes washers
Weather-based irrigation controllers
Garden hose nozzles that shut off water when it is not being used, instead of letting a hose run.
using low flow taps in wash basins
Automatic faucet is a water conservation faucet that eliminates water waste at the faucet. It automates the use of faucets without the use of hands.
A valve which reduces water, gas, time, money and CO2 known as a Combisave

Water can also be conserved by landscaping with native plants and by changing behavior, such as shortening showers and not running the faucet while brushing teeth.

How much energy in joules can the solar panel produce each day?

admin — Sun, 17 Jul 2011 04:01:45 +0000

Suppose one square meter panel of solar cells has an efficiency of 30% and receives the equivalent of 4 hours of direct sunlight per day. How much energy in joules can it produce each day? What average power of watts does the panel produce? If the solar cells were efficient they would generate about 1000 watts of power per square meter of surface area when exposed to direct sunlight.

4 hours = 14400 seconds

1000 watts of power per square meter

1000 watts = 1000 joules per second
1000 joules per second x 14400 seconds = 14400000 joules
30 % of that = 4320 000 joules.

since this is joules per day per m², the answer is 4320 000 joules/meter/day
or 4.32 MJ/m/day

How much ‘energy’ do I get out of a 10W solar panel?

admin — Sat, 14 May 2011 09:20:36 +0000

I want to get some electricity going in my shed, I’m thinking about using solar panels. How much ‘energy’ would I get out of a 10W solar panel? Would it be enough to run 5-6 light bulb all day?

>How much ‘energy’ would I get out of a 10W solar panel<

This is really complex stuff. You will get 10 watts from a 10 watt panel! LOL!!

>Would it be enough to run 5-6 light bulb all day?<

No. Not unless you can find light bulbs that use 1 to 1.5 watts each!

Solar panels are rated with according to their power output. The other responder is applying the typical efficiency of a panel to the panel’s rating, which already takes into account it’s efficiency.

Will a magnifying glass in front of a solar panel increase the energy harnessed by the panel?

admin — Sat, 16 Apr 2011 18:53:29 +0000

I was just curious because if a solar panel was adequately cooled and more energy was produced maybe solar panels would become a more contender for cleaner energy.

Potentially. If the magnifying glass was larger than the solar panel and therefore focused light from a larger area onto the smaller PV cell that could increase the power output. However, you would have to keep the entire assembly in the correct orientation with respect to the light source (so it would have to follow the sun over the course of the day) and probably wouldn’t work so well with diffuse light (as on an overcast day, for example). I’d imagine that in practice it would be cheaper and more effective simply to use a larger cell the size the magnifier lens would have been.

Does anyone know of a school to take solar panel installation classes in Georgia?

admin — Sun, 28 Nov 2010 04:28:46 +0000

Wanting to obtain certification in the field of solar energy / panel installation.

NABCEP is a national organization that certifies solar installers. They require taking classes that are ISPQ accredited by IREC (Interstate Renewable Energy Council) . To see a list of accredited class providers, check out http://irecusa.org/irec-programs/ispq-training-accreditation/ispq-awardees/.

Solairgen has Accredited Training Program for PV Systems Design and Implementation in GA, http://www.solairgen.com/.

is it possible to go green and use solar panel energy to power an entire gym?

admin — Wed, 24 Nov 2010 15:51:40 +0000

Absolutely, but it can be expensive, the best way is to design the entire gym around the concept of being green, this way money spent would be used most wisely. color, layout, lighting used, all these come into play but … Continue reading →

how to design a solar panel to store energy and convert it into electrical energy?

admin — Mon, 22 Nov 2010 20:43:48 +0000

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

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 12 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 12 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 100 watt light at 12 volts. Assume you get at least 6 hours of sun every day and the light will be on for 12 hours. That means the battery has to store 100*12=1200 watt hours. divide by 12 and that is 100 amp-hours, a large auto battery size.

Allowing for 20% losses in the battery and circuitry, that means you nee 1400 watt hours from the solar panel. Since it has 4 hours to operate, that means it has to deliver 1400/4 = 350 watts at 15 volts.

So there it is: 350 watt panel
100 amp hour battery
charge controller sized for above
100 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