Horizontal axis and vertical axis windmills are the two most widely used types of windmills as of 2014. They have two or three blades that convert wind energy into rotational mechanical energy, which then powers an electricity generator.Know More
Windmills work in the opposite manner of a fan. Fans use electricity to rotate their blades and produce a current of air. Windmills use natural currents of air to rotate their blades and turn a generator in order to produce electricity.
The power-generating capacity of most windmills as of 2014 ranges from about 100 kilowatts to a few megawatts. Wind farms, long rows of high-capacity windmills, produce electricity on a significantly large scale and supply it directly to a power grid. They usually employ horizontal axis models that are easy to install. Smaller windmills can be used for domestic purposes, telecommunication and even to pump water in rural areas beyond the reach of regular power grids. The energy produced by small windmills can be fed into the nearest grid.
As of 2014, many countries are under pressure to reduce coal consumption due to its adverse impact on the environment. Wind power makes a favorable alternative, as it is reputed to be a clean and renewable source of energy. They can be constructed on lake and seashores, mountain plateaus or on any open land.Learn More
Different types of bricks are adobe brick, clinker brick, common brick, engineering brick, face brick, fire brick, gauged brick, salmon or chuff brick, backing brick and blue brick. Different types of brick arise from using different materials or firing processes.Full Answer >
Drywall can be finished in a wide variety of textures, including smooth, skip trowel, swirl, orange peel, knock-down and popcorn. Each choice has advantages and disadvantages, including cost of application, how easy it is to paint and how well it hides flaws, but the choice is mostly aesthetic.Full Answer >
To read mechanical blueprints, an individual must understand the frame of reference to which the sheets are being drawn, the naming conventions of every section, the scale and content of each page, and the symbols used by the specific draftsman. The most important part of reading a set of blueprints is being able to visualize three-dimensional structures represented in two-dimensional space.Full Answer >
The Empire State Building stands is 1,250 feet above the ground, or 103 stories. The antenna adds an additional 204 feet to its height. The 86th floor observatory is 1,050 feet above ground, while the 102nd floor observatory is located at 1,224 feet. In fair weather, it is possible to see 80 miles into New York, New Jersey, Connecticut, Pennsylvania and Massachusetts.Full Answer >