Tuesday, June 10, 2008
conclusion
Windmill blades
The variables that we tested where number of blades length of the blades the speed of the wind, shape of the blade angle of the blades where made from.
What we learned from this what would make the blade spin the fastest. I learned that what the blade was made from had the largest effect upon the rotating speed witch effect would spin the turbine generator the fastest creating the most amount electricity witch is the goal of our wind turbine. We found that with the number of blades having two blades worked the best in terms of number of blades. I believe this happened because It didn’t weigh it down causing it to spin faster make the generator produce more electricity. The shortest blades worked best when it came down to the size of the blades. I believe that it was for the same reason as the 2 blades worked best. They had little weight. In terms of wind speed high speed worked the best. The blades had surface areas and the wind pushed the surface area and the force made it move. I predicted that that was what was going to happen. I believed that it would be square blades yet it wasn’t it was notched blades. I didn’t look as if it was something that would spin fast yet it was. I have no expiation for this. When it comes to angle 45 degrees was the best apposed to 90 degrees and 0 degrees. 90 degrees I believe this is accurate information because 90 degrees has no angle to turn so it has no particular way to turn. 0 degree has no surface area to the wind so it receives no power. Styrofoam was blades work the best in terms of what it was made from. I believe this happed because it could have a large surface area with out producing a large amount of weight.
The process of this experiment was rather simple. We set up six stations and divided our selves into six groups. We hooked up the blades to a generator that was wired down to an electric current tester. We power the blades with a fan. Read the amount of electricity that it was producing then swapped out the blades for the other kind in that section then we went to the next station and did this again.
The purpose of this experiment was to know how to design our wind turbine blades also if we need this information in a totally unrelated to school event or if we become engineers or wind mill blade designers.
If we where to do this again I would change several things. I would make sure all blades where angled right every time, that the fan is in the same position the whole time and that the fan remains intact the interne time.
What I would have done in forger to make a perfect blade I would make a Styrofoam, rather short, notched with 2 blades at a 45 degree angle with full wind speed.
The variables that we tested where number of blades length of the blades the speed of the wind, shape of the blade angle of the blades where made from.
What we learned from this what would make the blade spin the fastest. I learned that what the blade was made from had the largest effect upon the rotating speed witch effect would spin the turbine generator the fastest creating the most amount electricity witch is the goal of our wind turbine. We found that with the number of blades having two blades worked the best in terms of number of blades. I believe this happened because It didn’t weigh it down causing it to spin faster make the generator produce more electricity. The shortest blades worked best when it came down to the size of the blades. I believe that it was for the same reason as the 2 blades worked best. They had little weight. In terms of wind speed high speed worked the best. The blades had surface areas and the wind pushed the surface area and the force made it move. I predicted that that was what was going to happen. I believed that it would be square blades yet it wasn’t it was notched blades. I didn’t look as if it was something that would spin fast yet it was. I have no expiation for this. When it comes to angle 45 degrees was the best apposed to 90 degrees and 0 degrees. 90 degrees I believe this is accurate information because 90 degrees has no angle to turn so it has no particular way to turn. 0 degree has no surface area to the wind so it receives no power. Styrofoam was blades work the best in terms of what it was made from. I believe this happed because it could have a large surface area with out producing a large amount of weight.
The process of this experiment was rather simple. We set up six stations and divided our selves into six groups. We hooked up the blades to a generator that was wired down to an electric current tester. We power the blades with a fan. Read the amount of electricity that it was producing then swapped out the blades for the other kind in that section then we went to the next station and did this again.
The purpose of this experiment was to know how to design our wind turbine blades also if we need this information in a totally unrelated to school event or if we become engineers or wind mill blade designers.
If we where to do this again I would change several things. I would make sure all blades where angled right every time, that the fan is in the same position the whole time and that the fan remains intact the interne time.
What I would have done in forger to make a perfect blade I would make a Styrofoam, rather short, notched with 2 blades at a 45 degree angle with full wind speed.
purpose
the purpose of this project was to learn what form of windmill blade would work mos effectively, to learn about the scientific method & to learn how to write a conclusion.
the results
the results of this project wast that the best form of blade is a small, staffroom, square, with 3 blades each at 45o at a high wind speed
fact adv dis
facts = red
advantages = purple
disadvantages = green
wind is air in motion (kinetic energy)
the sun heats the earth unevenly causing air of the ground to rise and the air above the water to rush in to take its place
wind is only 0.01 of the U.S.A.'s total energy
wind is renewable
wind energy is clean meaning it doesn't pollute the endearment
wind power doesn't have upkeep costs
we can't transport wind
windmill are expensive
wind is makes a lot of nosie
wind isn't every where
ruins landscapes
advantages = purple
disadvantages = green
wind is air in motion (kinetic energy)
the sun heats the earth unevenly causing air of the ground to rise and the air above the water to rush in to take its place
wind is only 0.01 of the U.S.A.'s total energy
wind is renewable
wind energy is clean meaning it doesn't pollute the endearment
wind power doesn't have upkeep costs
we can't transport wind
windmill are expensive
wind is makes a lot of nosie
wind isn't every where
ruins landscapes
Monday, June 9, 2008
how to built it
- find the center of a wooden board.
- place poles 8cm from the center.
- put a wooden pole connecting the two poles.
- screw an eye screw into it the center.
- sharpen a dowel and place it through it.
- cut a water bottle in half.
- glue the water bottle together again yet apart as to hold the wind.
- make 4 coils each with 200 coils.
- glue 4 earth magnets on to a circle of cardboard.
- place the circle on to the dowel.
- glue the coils to the wooden board
purpose
the purpose of this project was to learn about global warming, economy & the science of polltion
how it works
chemical energy being converted into thermal energy works because two chemicals mix together it earthier requires more energy of doesn't need as much. it lets off or takes in the energy as heat
my experment
My experiment was transforming chemical energy into thermal energy. My group did this in three different ways. The first way was to mix vinegar and baking soda together. The seconded way was to open a hand warmer
the two types of energy
There are two categories of energy. They are kinetic and potential. The kinetic, energy that’s moving, energies are radiant, thermal, electricity, motion and sound. The potential, energies, ability to become work or change, are gravity chemical and stored mechanical.
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