about 5 hours ago - No comments
Question by ed f: which local winds could be most easily harnessed for the generation of electricity by a massive wind farm? —————————————— Answer by JackId say coastal winds are the most reliable. Also the towers do not need to be that large on coast. —————————————— Know better? Leave your own answer in the comments!
about 5 hours ago - No comments
Question by Morten H: Can someone please tell me some good and bad things about saving solar energy in water or stone from one day t? Can someone please tell me some good and bad things about saving solar energy in water or stone from one day to another. —————————————— Answer by Nthere’s nothing bad
about 22 hours ago - 5 comments
Question by : Can plugging appliances into a power chord save energy & reduce a utility bill? I saw a news story a couple days ago about this and would like some more info. Does this only apply to appliances not in use, like a TV or microwave? —————————————— Answer by JoePower is power is
about 1 day ago - 4 comments
Question by : how much money per year would you save on electricity if u used a wind turbine? —————————————— Answer by William Shanker…most likely NONE as the cost of a wind-generator and everything involved in its construction and set up is ENORMOUS ! Answer by PointBlankResponseYou need like a thousand more points of detail
about 1 day ago - No comments
about 2 days ago - No comments
Question by : questions to include in a questionnaire for home wind turbine? i am doing this for my design technology and i am creating a wind turbine a small one for home use and i have to create a questionnaire, nd i have already ran out of questions to include. —————————————— Answer by Tim
about 2 days ago - 3 comments
Question by Mitch: How much current can you make with a solar panel? I would like to put solar panels on my vehicle to run a hydrogen booster, the problem is that a hydrogen booster requires 25 to 30 amps to be efficient. Is it possible to create this many amps at 12 volts using
about 4 days ago - No comments
Question by tcook09: how do you make a miniature wind turbine? I am interested in wind farms and I going to make a wind turbine for the science fair any websites for tips and directions —————————————— Answer by Have a scientastic day!just get a small electric motor. I advocate you go to a place like
about 4 days ago - No comments
Question by : Solar Energy accounts for how much of our energy consumption? I need to know out of all the electricity we use, how much of it comes from solar energy? source please —————————————— Answer by Brian DanthySince heat is what energy through inbody is released, about 25 – 30% of it comes for
about 5 days ago - 1 comment
Question by Steven: Is a wind turbine’s blade speed related to its power output? I’m doing a science fair project on the power output of wind turbines. I had planned to actually measure the power output of various types of blades, angles of blades, etc., but building a system like this seems to be beyond
about 2 years ago
energy from solar panels can be stored in batteries for when there is little sun light. its very expensive to install, maybe 8 grand upwards for home systems, hence its usually just used for heating up water etc.. but average *home* system can take on maybe up to 40% of that household’s annual electricity useage.. it is rather expensive per square metre to buy as silicon is not so readily available to make it cheap.. but once its up there it doesnt need much maintenance except to clean it, etc.
wind turbines are expensive to install but once up, not much maintanence is needed, checked up maybe every few years.. the energy can be stored in batteries when there is no wind present.
so, i guess its def not answer B and C.
edit: wind and sunlight is free so it isnt expensive to *use*
about 2 years ago
A is true
B is obviously not true
C and D have some truth in them. Terms like efficient and expensive are relative, so depending on how you interpret these terms, you could see either C or D or both as true.
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about 2 years ago
A is the most important. The advantage of both is that sun comes in the daytime and wind tends to come at night. The best way to solve the variability problem is to either tie into the grid or use batteries to store the electricity you are not using for a later time.
Here are some good tutorials on how to do this and also understand the variability issue:
http://energy.wesrch.com/pdfTR1L02KEKX141
http://energy.wesrch.com/pdfTR1YL6V1ZIPVC
about 2 years ago
A is the strongest answer. The sun is not in the sky for half the time, on average, but some locations have extremely reliable wind.
B is 99% false. Same thinking as above.
C is about 60% true. Solar is not economical for many homes, and wind even less so due to geography.
D is 90% true. When heating, cooling, and cooking needs are taken into account, solar does not supply enough power. When heat comes from somewhere else like a wood stove or natural gas, solar can supply a home’s needs. There’s still the economic issue. And the term “efficient” is subjective.
about 2 years ago
again trying to help..again thnx 4 the previous………
nothing else…………but A.
NO COMMENTS ON THE OTHER OPTIONS….
except these there is another drawback…….its when your brother breaks the solar panel after quarrel with you……then no electricity will b produced………….hope this funny answer u liked……..its just to make yahhooooooooooo answer FUNNNNN…………
about 2 years ago
A