The Pictorial History of Wind Mills & Wind Turbines 200 AD to Present

1. The Pictorial History of Wind Mills & Wind Turbines200 AD to Present By John R. Root With Contributions from Dr. Leo Soderholm

2. P = DSV3

3. P = DSV3 P = Power D = Air Density Varies from summer to winter. More power (Dense) in the winter S = Sweep Area of Rotor Doubling the sweep area has the effect of increasing the total power in the wind stream by a factor of Four V3 = Velocity cubed -- Importance of Sighting If the wind speed Doubles, Wind Power grows eight fold; If the wind speed Triples, Wind Power grows twenty-seven fold.

4. Height of tower2nd major factor in wind power Rule of thumb: #1 There is 1/7 more wind at 100 feet than at ground level Which equates to 3/7 more wind power at 100 feet

5. Horizontal Axis Downwind Upwind Vertical Axis Types of Wind Machines

6. Horizontal Axis Lift Vertical Axis Push machine Push vs. Lift

7. 200 BCPersian Mills Vertical Axis First record of Wind Machine

8. 100 AD Heron of Alexandria Organ run by Wind Power

9. England 11th Century Post Mill

10. Post Mill

15. Whip Mill Hazerswoude Holland

16. Capmill -- Holland 1600’s

17. Capmill diagram

18. Angle of Attack of Wind on Mill

19. Windmill Near Kouderkerk Old and New

20. Capmill Wind Farm

21. S A I L PORTUGE S E

23. 1802 Muhle “Gott mit uns”

27. Tower Mill 1632Chesterton Windmill Built for Sir Edward Peyto Cromwellian Gov. and Defender of Warwick Castle

29. 1803Upminster Windmill Corn Mill of Smock Construction

31. First Recorded Windmills in the United states were in Jamestown Virginia in the 1620’s and were used for grinding flour

33. Old World designs didn’t work in the New World..

34. Wooden Towers w Didn’t Hold -Up

36. 1854Halladay Mill Small Scale water pumping systems were perfected starting with the Halladay windmill First Commercially Successful Self GoverningWindmill

37. WIND M ILLS S t eam Eng I nes Windmills Provided water for

38. T h a n P r e v I o u s M a c h I n e s 1883 -- Thomas O. Perry Conducted over 5000 tests on 61 Wheels 87% M o r e E f f I c I e n t 1904 Established Manufacturing plant in Chicago, continues to today.

39. With out the American Wind Mill the Midwest would not have been settled. There were over 2,000,000 Wind Mills on the Great Plains.

42. 144 Cedar Blades First Windmill with step-up gear box to run DC Generator 1888 -- First Wind Turbine Inventor -- Charles F. Brush Cleveland Ohio

43. IOWA Air Electric Jewell, IA Parris Dunn Clarinda, IA Wind Power Neuton, IA Wind Charger Sioux City, IA The rest of the world Aeromotor - Chicago HEBCO Jacobs - Minn. Minn. Manufactures of Wind Generators1900 to 1960