Archive for the ‘Home & Garden’ Category

I know that the wind is what gets them moving.

But are there weights in the tips of the ‘windmill’ blades that keep them spinning?

Knowledgeable persons only, no rude responses or I’ll report you.

Centrifugal force is actually a detriment to a windmills efficiency. It forces engineers to make the pivots and blades heavier and more durable than actually needed for the intended purpose of the windmill. This is necessary to provide the strength to withstand the centrifugal forces on the spinning blades.

The blades work on the same principal as an airplane wing, except instead of the low pressure on top of the airplane’s wing providing an upward force or lift, the low pressure areas on the windmill blades provide a sideways force which causes the blade to rotate.
Any weights on the blades are for balance to minimize vibration and to ensure a long and dependable service life.
The wind, as you stated in your question, is surely what keeps them spinning, the weights add a certain amount of inertia between wind gusts, but that is not their primary purpose. The more weight, the more wind energy it takes to get them spinning up and performing their function inside the mill.

I want to reduce my carbon footprint, and solar energy is completely renewable, and 100% clean energy, so I need help figuring out how to make solar panels that will power my entire house and will eliminate my reliance on the power grid completely (or at least 80%+).

Everything in the body of your question is laudable, and possible, except for the part about "cheap."

Solar electric is generally a large ($10k or more) up-front investment, and a cost savings over time, as well as environmental benefit. And in many areas, it would never recover its initial investment, not at today’s prices. Costs continue to fall, though.

The internet is full of sites that suggest you can power your whole house with just $200 or less of homemade panels. As to the information, you could probably find it through a bittorrent search site, by looking for "solar panel", and would see that the kind of information being sold is not practical at all. See http://www.nlcpr.com/Deceptions6.php for a rebuttal to these scams.

You could build your own solar water heater, and plans will come up in Google.

i need to cut down on electricity bills, and so i was wondering if someone could give me step-by-step instructions, or websites that have step-by-step instructions on how to build an electricity generating solar panel.

The idea behind building your own was to get defective and broken solar cells from the manufacturer, preferably for free though many now charge for them. These are cells that are either cosmetically blemished, cracked or otherwise broken during manufacturing and transportation.

As each cell fragment could have very different voltage and current characteristics, you have to manually measure the voltage and current characteristics, sort them and then wire them in parallel or in serial to achieve the desired voltage and current characteristics for the panel. Wiring in parallel increases the current while wiring in series increases the voltage, the current capacity of cells in series will be that of the lowest current capacity cell in that series hence you need to match fragments up to wire in parallel till you have enough current capacity to participate as a cell in the series. Cell fragments can only be wired in parallel if they have the same voltage output. It’s painstaking work and it’s difficult to place all the irregular shaped cells onto the solar panel in a layout that efficiently uses the space so your solar panels will likely be much larger than commercial ones. You could augment them with Fresnel lenses since the cells don’t occupy as much of the available surface area hence focusing the light onto the cells rather than the board will help with efficiency. Practice your soldering skills cause you don’t want to have to go back in to figure out where that cold solder joint is. If you’re real lucky you can get a supply of blemished cells but the cheapest ones are the broken cells.

you can tell me how its made from solar pannels or windmills or even other way im not sure what that is.

solar panels is just the photoelectric effect where light particles (photons) hit a certain metal (which is what you see) then electrons (which is what electricity is) jump off the metal and are caught and sent to some sort of capacitor or battery. and windmills work by using magnetic fields and work like an electric motor in reverse. so instead of you putting in energy and it spinning, the wind spins the motor and you get energy(electricity).

Where can I buy some sollar pannels to put on the roof or on the hood of a car?

The car I have right now, is a total junk. It’s a gas and it’s totally sluggish, plus it’s old so it smells like shit.

I’m seriously thinking about buying an electric vehicle or a used hybrid so I can save up on some money. I’m totally broke and I’m unemployed most of the time. But I have ten or so grand I can spend from credit if I can put it into something as a callateral that I can show to the bank, which an electric or hybrid hevicle is perfect because it barely depreciated or at least depreciates a lot less that ICE cars. Plus me being broke doesn’t help at all with the gass prices, I can berely afford to drive at all with a car, but I can have an electric vehicle as long as it has some extra solar pannels and some extra batteries, which is ok for me in terms of finances because they will be covered by the low interest loan, easy money.

—————
The amount of money you have isn’t very much – and you might not be able to afford a used hybrid – but I can show you some electric vehicles you can afford.
*
First, there’s the ZAP car. It costs $10000.
*

http://www.zapworld.com//cars/xebra.asp

*
The ZAP is a city car – it won’t do freeway speeds. If you need to do freeways, you might want a used or converted gas car – some of these cars can be had for less than $5000:
*

http://www.grassrootsev.com/convert.htm

and

http://www.austinev.org/evtradinpost/

*
These cars use lead-acid batteries – that’s the old battery technology, so you will only be able to drive about 50 miles between charges.
*
Solar panels cost thousands, but charging from the outlet isn’t very expensive. In fact, in my state (Michigan) the electric company has a special rate for electric cars – just 2 and 1/2 cents per kilowatt-hour. I drive about 1300 miles per month, and the electricity cost for my EV is only 8 dollars. In most gas cars, the gas for 1300 miles would cost nearly $250.
*
If you do this, be sure to join an EV club to learn how to care for your vehicle. EVs are very reliable, and almost never break down. But you have to care for your batteries so they last a long time.
—————-


yes

searching for home solar power plant which is run all the home electric equipment. and its costing and mantanance

that is not a hit project i.e., it is not that useful and handy
government is giving subsidiary
try to collect details from government sites or search google
long back i tried but found it was not handy

I have children that live in a very windy, remote area. I would like to find information about how to establish a wind turbine to harvest the natural wind force that is always blowing very hard at their place.

You could start here: http://www.solarenergyalliance.com/ .

Although it looks to be an industry run group (their own best interests in mind, I mean), they should be happy to let you know about grants and such if it means you will be buying products for renewable energy.

Also, check with the local power company in their area. Some will buy unused electricity from citizens with their own power generators.

Question of the day, right?
That’s pretty awesome Chuck.

try home depot or lowes

How do solar pannels work?

There are more than one type of solar panel, but nearly all work by the same fundamental physics, and the very large majority of commercially available panels are made from silicon (Si). I will discuss this type here. When silicon absorbs sunlight of a certain wavelength (shorter than ~1100 nm), an electron is excited into a state which is delocalized. In other words, this electron is now free to move around the entire panel with very little barrier. However, in a piece of plain old Si, there is no reason for it to go one direction rather than another (and electricity is the net movement of electrons in a single direction). In fact, the electron will move around in the Si randomly, and then eventually this electron will simply return to the ground, or unexcited, state and release heat (just like any black object does in the hot sun). However, in the solar panel, there is something called a junction, where two slightly different materials meet. The two materials are actually both made of Si, but each one is doped (has a tiny percentage of other atoms mixed in) with a different element. The type of doping (the two types are called n- and p-type) of the Si determines its electrical properties. When an electron reaches this junction, it is either accelerated across it, or repelled by it, depending on which direction it is coming from (imagine water and a hill… water accelerates down the hill, but can’t go up it). Now there is directionality to the system. You attach a wire to each side of this junction, and when sunlight is absorbed, the free electrons now only flow in one direction, from one side of the junction to the other, driving a current through the external circuit.

It should also be noted that all commercially available solar panels produce only electricity. That’s great for many things (lights, air conditioners, microwave ovens, etc.) but many appliances in our houses run on other fuels, like oil or natural gas (such as hot water heaters, furnaces, stoves, etc.). If you want to install solar panels on a your house, there are a few things to consider. First, determine how much energy in your household is electric and how much comes from fuels, like natural gas. Then also consider that solar panels themselves have no capacity whatsoever to store electricity, and so when the sun sets, they do nothing. If you want to have electricity from solar panels at night, you need a battery storage system that you charge up during the day and discharge at night. Installing that is another matter completely. Solar panels alone are great for providing day-time electricity nonetheless