solar energy efficiency
solar energy efficiency
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 Optical Coatings for Energy Efficiency and Solar Applic US $91.00 
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solar energy efficiency Frequently Asked Questions
Energy efficiency?
try to answer this.
i'm stumped.
A solar cell converts 12 000J of solar energy into 4 800 J of electrical energy. Then a fan converts the electrical energy energy into 12 000 J of wind energy. What is the total efficiency of the system? Show your work.
ps. Energy efficiency= useful energy output/input energy x100%
the efficiency is 100%. if the solar energy converts from 12000j, which is the input into 4800j and then back to 12000j in wind energy which is the output. the input 12000 divided by the 12000 is 1 times 100 and thats 100. so the answer is one hundred, the input is equal to the output. in other words there isn't any extra energy that is gained or lost
How much energy is produced?
I had an argument with a guy who thinks he can buy solar panels and get the network completely. I said it here: The site claims set http://www.greenhomeenergy.com.au/solarpower/power-station/ panels that can produce over 9,000 kw / h per year. Realistically, taking into account the efficiency (the table shows that the efficacy rate is about 15% http://sroeco.com/solar/most-efficient-solar-panels) the amount of energy produced each year?
The best arrangements I was seen as (Michigan) Panel Please note: hit him with a multiplier were 0.70 (Because of differences in radiation during day) multiple of 8 for the average number of productive hours per day. (You can increase with follow-up) Multiply for 240 half days you will get any output. Winter values will be significantly lower by 3 to 10 kW tables were installed. Two manufacturers of the three panels and inverter manufacturers different. 1 vertices close to the values set above estimated one third to 30% less than an order of magnitude or more. (We are always looking for what, but to be fair and not have the time or resources to invest too deeply yet.) Simple payback for the best three will be over 30 years. Rate power (blended) is $ 0.097 / kWh
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