Two 800 Pound Gorillas Climate Crisis Oil Crisis
Two major issues that our students will be left to deal with: Climate Crisis Oil Crisis
Wind is Fastest Growing Energy Source US Installed Wind Capacity
And because of: • Rising Fuel Price and Uncertainty • Declining Wind Costs • Federal and State Policies & Incentives • Local Economic Development • Environmental Stewardship • Energy Security • Consumer Demand
What is KidWind? Aggie Energizers! What is KidWind? The KidWind Project is a team of teachers, students, engineers and practitioners exploring the science behind wind energy in classrooms around the US. Our goal is to introduce as many people as possible to the elegance of wind power through hands-on science activities which are challenging, engaging and teach basic science principles.
Aggie Energizers! You can teach many Learning Standards • Concept #1 - Identify and explain the role of alternative energy sources and their conversion for use in society. • Concept #2 - Give examples of how energy can be transferred from one form to another. • Concept #3 - Differentiate between potential and kinetic energy. Identify situations where kinetic energy is transformed into potential energy and vice versa. • Concept #4 - Explain and utilize the steps of the engineering design process including the use of methods for representing solutions to a design problem. Recognize the parallel nature of the scientific method and the engineering design process. • Concept #5 - Identify and map aspects of the earth’s surface that would be applicable to engineering alternative energy conversion systems • Concept #10 - Explain the way in which an electromagnet can be used to convert forms of energy into electrical energy harnessed in a circuit • And MANY, MANY MORE…!
Aggie Energizers! Typical Wind Lessons(Before KidWind) • Beaufort Scale • Pinwheels • Student Reports • Discussion Activity All very interesting but very little of the science and technology related to the current wind industry is presented. In fact most text books are pretty negative about the future of wind and misrepresent the technology miserably.
Elementary Engineering is Elementary Wind Chimes Wind Art Building simple blades Aggie Energizers!
Middle Building Wind Turbines Testing Blade Parameters Assessing Wind Resource Mathematics Aggie Energizers! balloon ~3m streamers Kite or balloon string
Secondary Advanced Blade Design School Siting Projects Data Analysis Build Model (or full scale!) wind turbines Aggie Energizers!
Basic Words (Nomenclature) • Wind Machine • Kinetic device used to capture the wind and put it to work • Wind System • Wind machine, tower, and all ancillary equipment • Windmill • Wind machine that generates mechanical motion (ie. water pumping, grain grinding, etc.) • Wind Turbine • A device that produces electricity from the kinetic energy of wind
Wind Energy has been Popular for a long time The pilgrims arrived under the power of wind. Cape Cod was home to the first windmill in America. Wind helped fuel our country’s early economy.
Early Electric Wind Turbines helped Electrify Remote Farms in the early 1900’s
Birth of the Modern Wind Turbine California Wind Turbines 1980’s Smith-Putnam 1.25 MW Turbine Vermont, 1940's
How Wind Works Wind energy is created by uneven heating of the earth’s surface.
Land-Sea Breezes Land-sea breezes created by temperature differentials Winds also stronger near shore because of long unobstructed fetch Sea breezes typically strongest in late afternoon
Mountain-Valley Breezes Typically strongest in summer Nighttime mountain breezes are stronger than daytime valley breezes Mountain-valley winds can be enhanced by prevailing winds and convective flow between interior and coasts
Wind Varies Annually Average annual wind speeds may vary as much as 25% from year to year
Wind Varies Daily Wind varies daily not only because of weather but because of convective heating Winds typically strongest in mid-late afternoon Convective heating is less of an influence in winter, when storms dominate wind patterns
Our own Wind Potential Source: U.S. DOE
Wind Turbine Applications Generating electricity at Remote Sites Producing electricity in parallel with utility Water Pumping
Electricity for Remote Sites North American Farms in 30’s & 40’s Backcountry homes/cabins Research Stations Telecommunications Boats & RV’s Nomadic people Cathodic protection …