WATER PUMPING SYSTEM USING WIND MILL

INTRODUCTIONWind energy offers another source for pumping as well as

electric power generation. India has potential of over 20,000

MW for power generation and ranks as one of the promising

countries for tapping this source. The cost of power

generation from wind farms has now become lower than

diesel power and comparable to thermal power in several

areas of our country especially near the coasts.

How It Works

the water-pumping windmill is a simple machine that uses

mechanical advantage in multiple ways. It’s a direct-drive

device that transfers energy via gears, rods, simple valves,

and a piston in a cylinder—and uses high torque to move

water. In contrast, wind-electric turbines use electrical

generators coupled to high-tech airfoils that require high

speed to do their job.

How Wind Energy is Best Used As of today

wind energy is best fit to be used as an alternative source of

energy but as costs go down and effectiveness goes up this

could soon change, and wind energy may become a viable

option the leading source powering the future. Placement is

key in using wind farms and windmills, because if the money is

to be spent to create one, optimal effectiveness will need to

be assured.

How Wind Energy is Best Used

Wind power is a renewable energy source that has virtually

no disrupting effect on the environment With limitations

due to price and storage issues it is not a viable option as a

constant source of power Especially considering the fact that

practical wind machines only extract 5% to 45% of available

power depending on the efficiency of the turbine design We

are best served to use wind energy in harmony with other

forms of energy.

Why Windmills?

Wind pumps are wind driven machines for

pumping water.

• Total independence from the Electricity Board

• No electricity bills

• No expenditure for diesel

• Environmentally friendly

Wind pump maintenance

A comprehensive Maintenance Manual is provided with each

wind pump

1.Windmill and tower

• Minimal maintenance required

• Greasing of all bearings (two times a year)

• Checking for any loose bolts and nuts (two times a year)

2. Maintenance of pump, pump rods and delivery pipe

Depends on a number of factors

Quality or water is crucial (Sand in the water of saline water)

How Pumping Systems Work

Wind energy can be used by both mechanical and electric water

pumps. The simplest systems involve mechanical water pumps.

Thousands of mechanical windmills, using positive displacement

pumps, are still installed annually, and they are often a cost effective

method to provide small quantities of water for livestock. Most new

wind-powered pumping systems use a small wind turbine to power a

direct current (DC) electric pump, either diaphragm or helical rotor.

What kinds of windmills are there?

Windmills generally consist of two types

Vertical-axis wind

turbines are efficient and can obtain power from wind blowing

in any direction

Horizontal axis devices must be oriented facing the wind to

extract power

How much water can a wind-powered pump deliver?

The amount of water a wind-powered water pumping system can deliver depends on the speed and duration of the wind, the size and efficiency of the rotor, the efficiency of the pump being used, and how far the water has to be lifted.P DV =0 0109 2 3 . ΗP is power in wattsD is the rotor diameter in metresV is the wind speed in kilometres per hourη is theefficiency of the wind turbine

Example of Wind-Powered Pump Performance

Cylinder Pump - 15 m ift

Cylinder Pump - 15 m Lift

Compressed-Air Pump - 5.5 m lift

Pumping Rate (Litres per minute)

Wind Speed (km/hr)

What is required to maintain a wind-powered pumping system?

One of the attractions to wind-powered pumping systems is their simplicity

and robustness. It is prudent to check all rubber diaphragms annually, and,

on compressed-air models, to check all valves. The anchoring system for the

windmill tower should also be checked to ensure that the windmill is not

toppled during high winds. As with any pumping system, a wind-powered

pumping system should be checked regularly to ensure that cattle have an

adequate supply of water.

ADVANTAGES

The major advantage of this design is that the rotor blades can

accept the wind from any compass.

Another added advantage is that the machine can be mounted

on the ground eliminating tower structures and lifting of huge

weight of machine assembly, i.e. it can be operated close to the

ground level.

Airfoil rotor fabrication costs are expected to be reduced over

conventional rotor blade costs

DISADVANTAGES

Rotor power output efficiency of a Durries wind energy

conversion system is also somewhat lower than that of a

conventional horizontal rotor.

CONCLUSION

This technology would facilitate the future creation of new urban

landscapes, athletic fields with a spectator area, music halls, theaters,

nightclubs and a large gathering space for rallies, demonstrations and

celebrations, railway stations, bus stands, subways, airports etc. like

capable of harnessing human locomotion for electricity generation