Pelton Turbine or Pelton Wheel: Generator Kit and Design of Pelton Turbine or Wheel

8 types of Turbine

2010-09-28T23:13:00.000-07:00

Pelton turbine or pelton wheel is only one type out of 8 types of turbine that are currently used nowaday. It is even the first age turbine but still prove to be successful, even though many technologies are invented later.

There are 8 technologies for turbine that we are using nowaday as below.

1. Pelton Wheel
2. Paddle Wheel
3. Propeller
4. Woltman
5. Single Jet
6. Multi-jet
7. Compound
8. Axial

Good articles about Pelton Turbine (1)

2010-07-18T23:30:00.000-07:00

Pelton Turbines Generate Free Energy
By Nathan E Peterson

Pelton Turbines
Pelton turbines work best with heads of 50 feet or more. The high speed jet of water that results from such heads twists the bladed runner up to initiator speed without the need of added hardware. Pelton Runners can be any size from 12 foot width for megawatt installation down to 4 to 18 inch thickness for home installations.

Very small surge is mandatory to run a small Pelton turbine, in some cases no more than the water issuing from a reserved spring. The need for a high head, however, confines installations to mountainous places. Also, springs tend to parch up throughout some parts of the year and ice over other parts, so care must be in use to choose a water supply that will provide year-round power. A new improvement in impulse turbines is to orient the jet at an angle to the blades, as in Turgo turbines. These units are smaller and faster than Peltons.

Cross-Flow Turbines
Cross-Flow turbines work well when the head is greater than 3 feet. Water from a rectangular chops passes through a barrel-shaped runner in such a way that the water strikes the ring of blades on the runner tow times. This turbine is a comparative new comer; it has not yet been built in megawatt sizes but displays a great deal of security for use in undersized installations.

In addition, it's simple enough for someone with a home machine shop to make; yet it can match the performance of the other turbines whose fabrication requires a high level of technology. It works well over a wide range of water flow, is relatively free from problems caused by silt and trash, and is not affected by cavitation. To improve competence the rectangular orifice can be partitioned and parts of it blocked off during periods of low flow. Some step-up gearing may be needed for optimum generator speed.

Propeller Turbines
Propeller turbines are most efficient at relatively low heads of from 3 to 30 feet. The propeller is fully submerged and is driven more by the dull weight of the water than by the water's quickness. In high-head installations, propeller turbines undergo wear from cavitation. In addition they work well only over a slim range of tempo, so care is required to equal the size of the turbine to the existing steam flow.

For example, when flow drops to 50% of propeller turbines most advantageous, the power production will drop by about 75% and when the flow drops to 30% the output becomes zero. To rise above this constraint some large hydroelectric installations use several turbines in tandem, shutting down on or more whenever the flow lessens. Others employ Kaplan turbines, which have automatically adjustable blades that balance for flow changes.

Francis Turbines
Francis turbines can be used over a broad collection of heads 4 feet and more. As with a propeller turbine, the runner is wrapped up in the head water, which is guided onto the blades of the runner by a ring of adjustable vanes. The Francis turbine is highly efficient at its optimum flow but easily damaged by grit and cavitation. It is regularly used in large hydroelectric stations and is relatively expensive.

As with propeller turbines and other interior swamped turbines, a draft tube beneath the unit with its bottom rim immersed at all times in tail water is a valuable adjunct: as water drops from the turbine runner down the draft tube, it sucks more water down with it, adding to the effective head of the system. This added head can be of considerable importance whenever the overall head of the remainder of installation is small.

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Article Source: http://EzineArticles.com/?expert=Nathan_E_Peterson

Pelton Turbine Clip VDO

2010-05-04T00:56:00.000-07:00

Pelton Turbine: Impulse Turbine

2010-02-24T22:17:00.000-08:00

How the Pelton Turbine works related to impulse turbine.

Nozzle type turbine.
The nozzle turbine or impulse turbine has a turbine nozzle and pipe that. Water injection is a high water level (head) into the edge of the wheel play tons (pelton wheel) which is the name of Lake Houston.

A.. Playback tons (Leston A. Pelton) the patented invention in the year 2423 the water spray out.

With strength when people are stuck on the edge of the paddle wheel will cause the wheel to rotate in one direction with water injection.

History of Pelton Turbine

2010-02-18T19:51:00.000-08:00

Pelton turbine has been developed since 1880 by Lester Pelton. Model of the water turbine designed using cups of water, which is attached in the wheel within the wheel is a cup match and can use the river through the nozzle by more than 1 box may be any number up to 4 channels, which will be growing in size while the same water turbine.

In general, the water turbine for electricity production from water with high water level of the head (high head) is higher than 250 meters or less time in the case of small systems. Making this type of water turbine rotation speed of the river may take through a nozzle at high speed without players. The effectiveness of this type of water turbine is the best.

When the relationship between the speed of rotation of the wheel of the cup as half the speed of injection into the river (Boyle. 1996: 205-206).

Pelton Turbine: Free Energy

2010-02-18T03:43:00.000-08:00

What is Pelton Turbine?

2010-02-18T03:30:00.000-08:00

The meaning of Pelton Turbine

The Pelton wheel is among the most efficient types of water turbines. It was invented by Lester Allan Pelton (1829-1908) in the 1870s, and is an impulse machine, meaning that it uses the principle of Newton's second law to extract energy from a jet of fluid. Many variations of impulse turbines existed prior to Pelton's design, but were very inefficient. The water leaving these wheels typically had high speed, and carried away much of the energy. Pelton modified this with a paddle geometry that, when the rim runs at 1/2 the speed of the water jet, the water leaves the wheel with very little speed, allowing for a very efficient turbine.

From Wikipedia.org

Pelton Turbine

2010-02-16T00:56:00.001-08:00

Welcome to the best blog about Pelton Turbine