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Answer by freesiaoriental
Vibration is not so different from the movement of an earthquake…
Why do not you look into research done by the Japanese engineers?
There is a way to manipulate the foundations of the turbine or whatever it is so that the shaking will not affect anything it’s attached to.

Answer by Bob
Don’t worry about the vibration, first think about how you will deal with the horizontal forces imposed by the wind on the turbine blades, this will be transferred to the telecom tower and try to push it over.

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Answer by roderick_young
If you had a lot of questions about solar energy, would not it be superior to go to people who know the answers, than to seek out other people who do not know?

I live in San Jose, and am quite interested in green causes in general, but have enough resources for now as far as information.

Answer by Brett
What sort of questions do you have about solar energy? Your question is very confusing…

Do you want to know how to make use of solar energy?

Read this page, maybe this will help
www.squidoo.com/HomeMade-Green-Energy

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Answer by Cap10
Walk or ride your bike to school when the weather is good and carpool to school when it is cold. Use recycled paper and energy star computers. The last thing is purchase local. This will reduce the carbon used for shipping your school equipment.

On a school level there is several grants that schools can apply for that grants the school to get solar panels or a wind turbine.

Answer by Lissa Ann
Umm…sensor lights in classrooms. When a room has no movement in it after a few minutes, the lights will shut off.

That’s the only one I got…sorry!

Answer by Stan S
I think each single school in the country should have a fund raising drive to purchase solar panels and slap those puppies on the roof. Think of how many tens of thousands of grade school, high school, and college and university buildings are in the United Says alone, it would get the entire solar power industry rolling full steam ahead. Another idea is that many areas have free energy audits where they take an infrared camera and can tell where buildings are leaking heat in the winter and cold in the summer and you could try and get that done. If I were you I’d recommend your school have a fund raising drive to purchase some panels, and the ideal part is you could have one each year or two and add more panels until the school produced much more energy then it used and it would get a check each month from the power company that it could spend on scholarships or supplies or whatever else the it wanted to. Just remember to shop around for the ideal price as they vary widely. You could have one of those huge thermometer things that had money levels on the side and could paint it in as you collected cash until you reached the mark, I think it would be awesome and instruct everyone in the community about taking care of the environment and about new technology and it would be a symbol of working for a brighter future. It would also help energy independence and help get us off fossil fuels and other forms of non-renewable energy.

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Answer by rsdudm
Depends on the diameter and pitch of the blades.

Answer by bill
i would assume so, if there was no friction or drag acting on the second one, and All of the air from the first one hit the second one…..but there is friction and drag, im saying no

Answer by enginerd
obiously, the “energy” in the wind exiting a turbine is less than the energy of the wind entering the turbine by the amount of work done by the turbine plus losses.

the reduced energy is manifested in properties of the exiting wind including velocity

the change in velocity will depend on the orginal velocity, the size and design of the turbine, the load (say electrical generator or whatever) on the turbine and other factors

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Answer by doane_nut
Impractical, they would have to much too large.

Answer by sd3r
the San Diego Trolley (independently powered traction trucks) requires 500kW to accelerate, 130kW to maintain speed. typical solar panels output ~120 watts per sq meter. do the math.

Answer by billrussell42
You would need more panels then you could fit on the roof. Even if you used the roofs of all of the freight cars.

Typical power is 3000 HP or 2.2 MW.
Solar panels are about 10 watts/square foot, so to get 2 MW, that is
area = 2 MW / 10W/sq foot = 200,000 square feet.

Area of the top of the locomotive is about 6×70 or 420 square feet.

so we are short by a factor of 200,000/400 = 500

And, trains cannot operate only when the sun is out, so they would need lots of heavy batteries to store energy for when the sun is not out, and that means the area would be 5 to 10 times more massive than listed, so the factor changes from 500 to 5000.

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Answer by R C
It is absolutely safe for you to use the more massive flourescent bulbs because they do not draw as much current nor generate as much heat as the incandescent 60 watt unit.

Answer by Bob P
The rating is based on power and the heat dissipated. As long as the power does not exceed 60 W you are OK.
Check the wattage of the new bulb.

Answer by tinkertailorcandlestickmaker
Most compact florescent lamps are marked (on the package anyway) with an “equivalent” wattage and an actual wattage, if the actual wattage is less than or equal to 60W you should be OK (I have never seen one as high as that) I do not have one handy to check, but I’d guess a 100W “equivalent” will be less than 20W actual, so you should be fine.

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Both are excellent answers. Thank you! I do have a massive gap at the top of my energy curtains, so I have to fix that. My windows are old, but we are moving and will not be replacing them.

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Answer by Stephen M
It depends on your windows and I suspect if you feel the need to have thermal curtains, your windows are probably not energy efficient and thus keeping the thermal curtains shut might be a good idea.

If your home were well insulated and had top notch windows, the answer would be to grant the sun in, which is an idea frequently used in passive solar design.

Answer by Peter Reefman
On a cold sunny day it’s ideal to keep the curtains open for the windows that are letting the actual sunshine into the house. You’d need VERY bad windows to let more heat out of those windows than they are harvesting.

The windows that are facing away from the sun can be superior to have their curtains closed, especially if the window is single-glazed, has leaky frames, and you have good quality curtains.

But do not forget lighting either. Even though heating does use more energy than lighting and it’s often more effective to have un-sunny curtains drawn and lights on, light is another good reason to keep the curtains open on windows with direct sunshine streaming in through them.

One point on curtains – You will also need a good quality tight fitting pelmet. It’s not enough to ‘just’ have thermally efficient fabric if you have no pelmet. This is because if there is a gap at the top heat transfers through very easily anyway. It’s a tiny hard to explain without pictures, but state it’s very cold outside and a heater is warming your room with thick curtains that are drawn. The heat inside your room will rise, and the cold outside will cool the air down between the window glass and your (thick) curtain.

If you DON’T have a pelmet, then a convection will be created where the warm inside air will go up while the cold air coming through the glass will drop, and pull warm air down behind the (thick) curtain cooling it before sending it under the curtain and into the room.

If you DO have a pelmet, this convection cannot take place. You will have warm air inside the room, cold air outside, and cool still air between the curtain and glass.

Hope that makes sense!

By the way a great curtain/pelmet combination is Roman blinds, as they ALWAYS have a pelmet built in.

Answer by Rachel
It depends on the type of shades your using, if you have honeycomb shades its superior to use that since the cellular shade designs help a lot with insulation and cuts down on energy consumption. These shades work great regardless of the season since it helps maintain the rooms temperature without using any power.

For more information check out:

http://www.honeycombshades.ca

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Answer by jetrx_1011
I recently saw an article on Yahoo news about a guy that purchased a wind turbine for personal use. He spent around $ 65k. He figured it would take about 8 years to pay for itself.
That might give you an idea on what to expect.

Answer by GABY
I work a lot in west Texas. They have thousands of them. Most of them are about 1.25 MW, and cost about $ 2,000,000-$ 3,000,000 each. That would probably serve about 80-100 houses when producing full power. Of course, you would need another source when the wind is not blowing over 6-7 MPH.
They also pay the land owner about $ 3000/yr lease payments. I do not know what the cost of connecting it to the grid, all the environmental permits, etc. would be.

Pretty costly power, but would be good for the environment.

Answer by j p
GABY’S answer is correct.

I knew of the price of 1.5 million Dollars per wind turbine, but in this price range a tiny more or less is rather insignificant, since those who dream about this could not afford to purchase one in the first place.

GABY please e-mail me the location of the retirement community in Mexico. I have been playing with the thought to retire down there myself, like so many others. It certainly would cost a lot less living there. Thanks in advance, JP.

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Answer by noworryz
Hint: convert all your length measurements to meters. Multiply them together to get meters-cubed. Multiply by the density to get kg. Multiply by the temperature change to get kg-oC. Multiply by the specific heat to get kJ.

Remember to always check your units!

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Answer by Chuck P
That would be on things that have pre warmers in them like Television sets, no it’s not worth the effort.

Answer by William B
only if your going to be gone for a while,
the hot water heater is the one that will draw the most electricity,

Answer by ron
yes, many electrical items will use electricty even when turned off if left pluged in, such as televisions, computers, and other items that will come on nearly emediatly when turn on.

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