Wind Energy Systems for the Home

Author: Peter Lenkefi

Is it possible to power a home using wind energy?

In theory it is possible to become energy self-sufficient relying on purely wind energy to power your home, but in practise the situation is somewhat different. You may find that unless you have a small house, a large patch of land and forgiving neighbors it is very unlikely that you will become self sufficient off the back of wind energy alone. Most houses would take up to a dozen wind turbines to power their house but by combining wind energy with solar power you are greatly increasing your chances of becoming energy self sufficient.

There’s no avoiding the fact that as a whole, people are depleting the already limited stock of fossil fuels that are available to us and we have to act now before things get much worse. By combining two wind turbines and full PV tiles on your roof (it’s really not that much more expensive than having your roof tiled normally) you will undoubtedly be able to create enough energy to power your home and maybe have a little bit left over.

Grid tie systems.

Grid tie systems are a vital part of any energy self sufficient home; as well as having all the right equipment to produce, generate and convert your power you should also ensure that you get a grid tie system. This enables you to sell back surplus power to the grid. A grid tie system means that during those times of year when you produce more energy that you need you can sell it back but it also means for the wintry times of year when you may not be producing enough solar power you can buy power back from the grid. This means you are no longer a burden on the stock of fossil fuels.

Make a lot, use a little, make a little.

If you’re really lucky and live in an area with get high wind and bright sunshine it might be the case that you will provide more energy over the space of a year than you actually use. In this case the energy you sell back to the grid will provide you with a small profit. After the space of a few years you could find that your wind turbines and your solar panels have already paid for themselves.

Neighbors.

Wind turbines can make quite a noise and anything but the very smallest will become an eye sore. You need to make sure that your neighbors don’t mind the noise or the view and you may bee best trying to get them to do the same kind of thing.

You Need a Weather vane to Tell Which Way the Wind Blows

Author: Mitch Endick

Weather vanes, or wind vanes, have been used for centuries. Since the time of the ancient Greeks, the weather vane has served a dual purpose. Since the advent of the weather vane, their use has been both decorative and functional. The source of the wind may not have been fully understood, but people of ancient cultures certainly understood how important the wind is a predictor of the weather.

It should come as no surprise that the simple weather vane became as ornamental as it is practical. Historians believe the one of the first weather vanes was part of the Tower of Winds in ancient Greece. The tower was believed to have been constructed around forty B.C. by the astronomer Andronicus.

The Romans constructed many of their weather vanes from images of the gods. Prior to the advent of recorded scientific observation, there was a great deal of superstition around the weather. Through good weather or bad, the gods were often given credit for the prevailing winds.

Seafarers in ancient times used a simple type of weather vane, in the form of a small piece of cloth fastened to the rigging. This makeshift wind vane came to be known as a telltale and is still used today by sailors. The telltale was not the only use for a simple piece of cloth to indicate the strength and relative direction of the wind.

The weather vane has been discovered to be part of almost every ancient culture. Aside from depictions of various gods, animal themes common for wind vanes, even today. The use of animal characters usually had a connection to religious beliefs. Artisans have adopted the weather vane as a medium for their craft adding to the decorative qualities of these simple weather tools.

Balance is the key to a properly functioning weather vane, as the weather vane must be able to turn in reaction to the slightest breeze. The center of the weather vane must rest on a center axis and be equally balanced on both sides. A basic design includes a center post with the body of the weather vane resting over it. The center post may come to a sharply tapered point. The body of the weather vane would fit on the post in a way were the weight would be concentrated directly on the point. If the body of the weather vane is not allowed to move freely, its reaction to changes in wind direction and speed will be too slow.

The shape of the weather vane can vary from a simple arrow, to more ornate and decorative figures. Even a large weather vane can be designed in way that optimizes its reaction to the wind. The shape is probably more important than the size. The body of the weather vane must designed in a way that is somewhat aerodynamic. An airplane wing creates lift by generating a positive pressure under the wing surface and a negative pressure on the top. Think of a weather vane as a wing surface turned perpendicular to the ground. The reaction to both positive and negative pressure causes the weather vane to turn.

Farmers and ranchers used relied on the wind to operate water pumps. Anyone who has traveled the American heartland may remember seeing these simple windmills turning. A key to an operating windmill is its ability to rotate with changes in wind direction. These windmills have a tail stock that acts in the same way a weather vane does, helping to point the blades of the windmill in the optimal direction.

For most of us, the need for a windmill has little to do with whether we have a weather vane. In these days of modern meteorology, weather predictions are readily available, often in great detail. These advancements in modern technology have rendered the humble weather vane to a decorative addition to our homes. Like many pieces of Americana, antique weather vanes have become quite collectible. Many diverse themes have been used for the wind vane from the artistic to the humorous. With a rich history and functionality, the humble windmill can add a touch of whimsy and lore to your home.