Show FARM TOPICS fill WINDMILL POWER IS CHEAPEST WAY 0 electric pump found most convenient by A G TYLER the wind that whistles around our ears in january and that gently waves the fields of grain in july is still found to be one of the cheapest sources of power for some farm jobs according to the division of agricultural engineering at the university of minnesota after summarizing the history and development of windmills all over the world the following conclusions are reached as far as power for pumping water is concerned it if low first cost is of prime importance then pump by hand band if convenience is the feature most desired the electric pump is best if moderate first cost no operating cost freedom from monthly bills and general allaround all around reliability are desirable then the windmill will be the choice tyler pointed out that the power output from farm windmills depends upon the diameter of the wheel to compare the power developed by wheels of different sizes multiply by itself the diameter of each wheel for example an eight foot mill will do almost twice as much work as a six foot because six times six equals 36 while the diameter of an eight foot wheel multiplied by itself gives 64 likewise a 10 foot mill will do about three times as much as a six foot mill large wheels run in lighter winds |