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A water wheel is a machine for converting the kinetic energy of flowing or falling water into useful forms of power, often in a watermill. A water wheel consists of a large wheel (usually constructed from wood or metal), with numerous blades or buckets attached to the outer rim forming the drive mechanism. Water wheels were still in commercial ...
A pico hydro system made by the Sustainable Vision project from Baylor University [1]. Pico hydro is a term used for hydroelectric power generation of under 5 kW. These generators have proven to be useful in small, remote communities that require only a small amount of electricity – for example, to power one or two fluorescent light bulbs and a TV or radio in 50 or so homes. [2]
The inflow of water loads the paddles. The power thus exerted onto the paddles causes the chain, which is mounted to run on roller bearings, to move. In turn, the circulating chain imparts a rotational motion to the drive wheels. A generator is connected to the rotating drive wheels via an overdrive transmission. The generator converts the ...
The main difference between early water turbines and water wheels is a swirl component of the water which passes energy to a spinning rotor. This additional component of motion allowed the turbine to be smaller than a water wheel of the same power. They could process more water by spinning faster and could harness much greater heads.
Schematic diagram of an overshot water wheel. Date: 11 March 2007 (original upload date) (Original text: March 11, 2007) Source: Transferred from to Commons. (Original text: Original artwork by Daniel M. Short) Author: The original uploader was DanMS at English Wikipedia. (Original text: Daniel M. Short) Other versions
The impulse energy of the water jet exerts torque on the bucket-and-wheel system, spinning the wheel; the water jet does a "u-turn" and exits at the outer sides of the bucket, decelerated to a low velocity. In the process, the water jet's momentum is transferred to the wheel and hence to a turbine. Thus, "impulse" energy does work on the turbine.
This image is a derivative work of the following images: File:Pitchback_water_wheel_schematic.png licensed with Cc-by-sa-3.0 . 2009-12-21T16:06:32Z Thryduulf 2000x2067 (452595 Bytes) Fixed a couple of letter spacing issues with the labels.
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