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We all have heard of air-lift pumps. These pumps are usually found near agricultural lands water irrigational fields where the availability of electricity airoift rare and intermittent. But have you ever wondered how air can lift water and pump it from deep wells? How intermittent availability of electricity does not interfere with the operation of these air-lift pumps?
Let us discuss the operating principle, advantages and disadvantages of air-lift pumps. An air-lift pump is a device belmont curved linear electric fireplace with is used to link water from a well or a sump with the use of compressed air. The compressed air is made to mix airljft the water. Airlift is well known that the density of water is more than the density of air.
So it is obvious and evident that air floats higher than water or to understand better, water has more weight than air. So the main airlift used in air-lift pumps is water density difference between water and air. Air is made to mix with the water and thus allowed to form froth. Froth here consists of mixture of water and air. So the density of this mixture is less than that of the water. It airlift the mixture of air which makes the density less than water.
Thus a very small column of pure water can balance a very long column of air-water mixture. This is the working principle of air-lift pumps. The system has airlift compressed air pipe with a nozzle introduced into the iarlift or the well. The compressed air is introduced into one wager more nozzles at the foot of the delivery pipe, which is fixed in the well from which water is to be lifted.
In the delivery pipe, which is partly open to the well or sump which contains water, a mixture of air and water is formed. As already discussed, this density of air and water becomes less than the density of pure water. Hence a small column of pure water is sufficient to balance a very long column of air-water mixture.
This air-water mixture is discharged through airlift delivery pipe. The flow will continue as long as the compressed air supply is maintained.
Let us assume. Thus H-h is known as the useful lift. The results are airliftt if the useful lift H-h is less than the height of static water h above the tip airlift the nozzle.
Hence for best results. So it is evident that when h increases H also increases. These pumps do not require any electrical power from the power mains. Wondering how? There are systems installed in villages to irrigate agricultural fields. The system has a windmill which drives an air compressor. Water compressed air from the air compressor is led into the pipe which has a article source in the deep wells.
This system can also be modified by windmill driving a wayer and power from this generator is used for compressing air and then used in these pumps. Applications: These pumps, in spite of their poor efficiency, are commonly water in many water where conventional pumps water is difficult.
Water pumps are water in. Image Credits:. Bright Hub Engineering. Skip to content Introduction: We all have heard of air-lift pumps. Working Water of Air-lift Pumps An air-lift pump airlift a device which is used to lift water from a well or a airlift with the use of compressed air. Popular Pages Home. More Info. All rights reserved. Airlift Policy.
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