CHAPTER IV

THE WATER WHEEL AND HOW TO INSTALL IT

Different types of water wheels--The impulse and the reaction wheels--The impulse wheel adapted to high heads and small amount of water--Pipe lines--Table of resistance in pipes--Advantages and disadvantages of the impulse wheel--Other forms of impulse wheels--The reaction turbine, suited to low heads and large quantity of water--Its advantages and limitations--Developing a water-power project: the dam; the race; the flume; the penstock; and the tailrace--Water rights for the farmer 56