what is the diferrences between wind turbine and windmill?
479534
A turbind spins in a flat trajectory parallel to the land and generates electricity. A windmill spins vertically and does not develop a rapid speed, but is used to primarily grind grain.
786312
Since you're dealing with a variable energy source (wind), you're best bet is to build a DC generator...\n\nIs this a science progect?\n\nA DC Generator is the same machine as a DC motor...  So if you're building something for your home, then just use a DC motor and a simple belt an pulley to reduce the rotational resistance (or load) on the blades, so a slower wind can be used...\n\nFor a Science project...  \nBuid three loops of wire and seperate them 60° on the rotor of the wind mill.  Place a magnet on either side. north to south\nSet up "brushes" (chunks of graphite like pencil lead) on either side so that as the rotor spins with the wind, the same side is going to the same terminal + or - no matter which side of the coil it is.\n\nHave fun with it...
1140879
Wind turns the propellers, which is connected to a turbine engine that converts the wind energy to electrical energy. I believe it is stored by batteries sometimes, or more commonly it is tied into the power system that it is associated with. Typically seen on farms because of their proximity to traditional power sources. Wind mills make it convenient because in the plains, there is an abundant source of wind.
755704
How Does the Windmill Work?\n\nWind Energy\nWind is an indirect source of solar energy. It is caused by the uneven heating of the earth by the sun and the resulting redistribution of air to equalize energy in the atmosphere moving air from areas of high pressure to areas of lower pressure. The energy of the wind is transferred to the windmill’s sails where it is harnessed to perform work.\n\nThe cap of the windmill is turned with the winch attached to the bottom of the tail pole until the sails face the direction of the wind. Depending on the wind speed, wind boards are installed on the leading edge of the sails and canvas sail-cloths are unfurled across the sail-frames. The Miller climbs the sail-frame using the sail-bars like rungs of a ladder attaching the canvas to the cleats on the whip. High winds require less open sail than low wind. The Miller determines the amount of sail surface required based on wind speed and partially furls (reefs) the sails as required. The sails catch the wind and turn the wind-shaft.\n\nThe wind-shaft which is connected to the brake-wheel can be stopped with the brake which consists of a band of friction blocks encircling the brake-wheel attached to the brake lever and controlled via a rope near the tail pole attached to the brake lever. The turning brake-wheel turns the wallower connected to the upright shaft on the fifth level. A wood wheel on the fourth level is used to adjust any irregular spinning of the upright shaft.\n\nThe upright shaft is connected to a large gear called the spur-wheel on the third level. Power to run many things in the windmill is drawn from this wheel. Two stone-nuts turned by the spur-wheel drive quant shafts in turn rotating the runner stones; the top stones of the grinding stone pairs. The lower stone of the grinder is the bedstone; it remains stationary. The spur-wheel also turns a third lantern gear (trundle) to drive power transfer belts, pulleys and shafts used to operate the grain elevators, sifters, grain separator, corn sheller and a vacuum system.\n\nHow is Grain Ground into Flour?\nGrain and flour move through the system using grain elevators and gravity. Grain is carried into the windmill and poured into first level hoppers. From there it is cleaned in the basement with the corn sheller and grain separator. Grain elevators carry cleaned grain to the third level hoppers which hold it until it is dropped into the second level grinders. Corn & oats are ground in the west grinder and dropped into a ceiling mounted sifter on the first level. Wheat & rye are ground in the east grinder. The flour drops into an elevator at the ceiling of the first level, is carried back up to a hopper on the third level and dropped into the sifter on the second level. The sifted flour is stored in hoppers suspended from the ceiling on the first level.\n\nInteresting Notes\nThe windmill contains two scales; a floor scale in the windmill and a wagon scale outside the north end of the windmill. The scale inside the windmill can weigh individual bags of grain. The scale outside is used for weighing loaded and unloaded wagons.
157960
"Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface."\n\nThe sun heats up the earth's surface, the hot air rises while the cool air sinks, therefore create air movement - which is called wind.
242556
Get a Small DC Motor with Two Wires, and an LED from Radio Shack, then, figure out a way to put a small fan blade on it, and put a small Electric Fan in front of it, blowing Air onto Your small Fan to turn the Motor to demonstrate how a Windmill could power a Generator, and produce Electricity.
276230
in an ideal turbine the process is entirley reversible, meaning there is no entropy change during the process.  a real turbine involves friction and therefore entropy changes
1103262
no, there are no differences. Just the quality of the mill makes the difference.
323889
wind farming: eco ben.= no c02 emissions during energy production, no noise pollution, easy to maintain\n\nside effects=  unsightly and spoils the countryside, kills birds of prey ie eagles
159452
I don't think I understood the question, but I believe you want to know about windmills...
634096
Ján Andrej Segner developed a reactive water turbine in the mid-1700s. It had a horizontal axis and was a precursor to modern water turbines. It is a very simple machine that is still produced today for use in small hydro sites. Segner worked with Euler on some of the early mathematical theories of turbine design.\n\nThe word turbine was coined by the French engineer Claude Bourdin in the early 19th century and is derived from the Latin word for "whirling" or a "vortex". The main difference between early water turbines and water wheels is a swirl component of the water which passes energy to a spinning rotor. This additional component of motion allowed the turbine to be smaller than a water wheel of the same power. They could process more water by spinning faster and could harness much greater heads. (Later, impulse turbines were developed which didn't use swirl).\n\n\nthis is all that I know I dont know who or what a barkers turbine is and I did a search on Google just to see what it was that I dont know about and it came up nill. So check into what you need and get back to me.\n\nBri
89951
Just as with any other generator, electrical power is proportional to shaft torque and speed.  A wind turbine generator is designed to operate in a certain speed and torque range.  The design of the turbine and pitching of the blade angle keep it operating in this range.  It's actually wind speed that forces the control of torque/speed up to a certain maximum level, so yes, electrical output is directly coupled to wind speed and energy capture of the wind.  \n\nThe generators in wind turbines do generaly require some amount of excitation current to regulate power output.  This is really what allows wind turbines to operate at different power outputs and not a single fixed rating.
1161499
A Lot of factors to consider here.\nSize of the Windmill?\nWeight of the car?\nWeght of the cargo?\nWind speed?\nFor discussion's sake, let's figure the the windmill is 6' high.\nMounted to the top of the vehicle going 'with the wind'. and you're using a generator capable of producing 5 hp..\nA 15 mph wind should do it...\nThat's, of course, taking advantage of the push from the wind as well.
394468
Green energy that includes natural enegetic processes.  Geothermal power, wind power, small-scale hydropower, solar power, biomass power, tidal power and wave power fall under such a category. Some versions may also include power derived from the incineration of waste.\n\nRemember that no power source is impact-free. For instance, concerns are raised over bird kills and in some cases noise pollution by windmills and over heavy metal use and associated mining damage by raw materials used for constructing solar cells.\n\nHere in Greece we have used windmills  ancients before electricity but now we use it to produse electricity for our islands. We use also solar cells and  small-scale hydropower to produse electicity.
534169
Windmills are detrimental to the landscape and block out beautiful viewing areas. also, construction of such windmills destroy wildlife and fauna of the regions in where they are built.\nHey, better to drill for oil in Alaska.
964687
renewable - Wind power - cheap, available, enviromentally friendly & does not run out. Disadvantage - has to be windy/exposed, initial cost of setting up, can be considered unsightly\nTidal - Cheap, enviromentally friendly, available around the world & does not run out. Disadvantage - cost of setting up, small return for initial investment, suitable locations\nSolar - available, enviromentally friendly, relatively cheap after installation. Disadvantages - Cost of setting up, sunny location needed, storing power\nNon Renewable - Nuclear - reliable, clean, economic. Disadvantage - enviromental hazard, safety, disposal of waste\nFossil fuel Coal & gas - widely available, relatively cheap, established technology. Disadvantage - limited source, carbon emmissions, price can fluctuate
212159
http://www.kansaswindpower.net/used_wind_generators.htm  \n  http://www.nwpwr.com/products/wind/lakota.htm  \n  http://www.mikeswindmillshop.com/wgenerators.html