Science

Energy star appliances, are appliances that use usually 20%-30% less energy than a regular appliance. I estimate that the electric bill in my house is somewhere from 80$ to 120$. My refrigerator and stove are both energy star appliances, also all the light bulbs are energy saver light bulbs. Wind Turbines--Most of the commercial-scale turbines installed today are 2 MW in size and cost roughly $3.5 Million installed. Wind turbines have significant economies of scale. Smaller farm or residential scale turbines cost less overall, but are more expensive per kilowatt of energy producing capacity. Wind turbines under 100 kilowatts cost roughly $3,000 to $5,000 per kilowatt of capacity. That means a 10 kilowatt machine might cost $35,000-$50,000. Materials--A wind turbine is a machine that converts the wind's kinetic energy into rotary mechanical energy, which is then used to do work. In more advanced models the spinny energy is converted into electricity the most movable form of energy, by using a generator. The model most supported by commercial manufacturers, however, is a straight up turbine, with a capacity of around 100 kilowatts and three blades not more than 33 yards in length. Wind turbines with three blades spin more smoothly and are easier to balance than those with two blades. Also, while larger wind turbines produce more energy, the smaller turbines are less likely to have to have major mechanical failure, and three bladed ones are more economical to maintain. Because in northern Iowa there is more money in, Des Moines, Iowa City, Dubuque, also Cedar Rapids makes a lot of money to produce those wind turbines. Wind turbines are more likely to see in northern america because people are already spending enough a year on other bills, so if you have a wind turbine, you won't have to spend as much on electricity. The college that studies wind turbine energy is, Iowa Lakes Community College. The site says that it takes a minimum of 3 years and a maximum of 7 years to get your diploma of wind turbine technology. Things needed to be changed--- On the outside, we could get solar panels on the top of our house, we could use eco-green insulation, and use recyclable wood for the outside of our house. On the inside of our house, we could get our energy star washer and dryer, we could use a energy star toilet, get sinks that use less water, use less electricity by turning off t.v's when gone, also turn off lights when not home, and we could take shorter showers.



A step by step production of how a wind turbine saves energy--- A wind turbine starts out conserving energy by taking wind power that is twirling the blades and making it into kilowatts to run things, the process is that the wind turbine spins and creates electricity that flows down the almost 80 foot shaft into a storage device whcih makes all the electricity into kilowatts then anything, connected with that wind turbine from underground, will power it with the source of energy coming from the wind turbine.