Hydro Kinetic Turbines against Dam

Sep 9, 2017   //   by admin   //   Knowledge Base  //  No Comments

This paper is an explanation of hydrokinetic turbines used for the generation of electricity as against the Dams.

In order to move ahead on the following discussion, essential concepts needs to be initially understood.
Hydro-kinetic Turbines: this is a mechanism to generate energy from the moving water using the turbines which is either embedded in the water body or the turbine is submerged in the water body at depth where the turbines can experience the rotation and energy can be converted via the blades.

Hydro-kinetic turbine is the utilization of untapped power potential source of ocean, tides which produces electricity without creating pollution or disturbing the environment. Since water is a renewable source, it is also a reliable mode of generating energy that is also contributing a large amount of energy to the world.

Dams: Though the use of the word reflects towards its comparison to traditional ways of hydro-power generation of electricity, but we shall first understand what is a dam. Dams are massive barriers or wall made of solid material across the river, oceans and streams for the purpose to confine or block the flow of water. This is observed naturally as well as created by man especially to block the flow of water that can henceforth be utilised for human necessities such as irrigation, navigation, electricity generation and permanent supply of water for the community’s use. This confinement of water makes the lakes and reservoirs.

The wall of the dam was meant to keep the water confined and re-directed in different direction to ensure there lies no opening to the homes or land. This was a preventive mechanism towards the floods that could cause harm to the human kind.

Though the use of dam was felt necessary, it was observed after an era as to what really could the existence of a dam lead to. The dam is considered to be the wall against the growing potential of water body which is of growing nature, especially during the rains. The capacity of the dam to hold the water within its wall was a sensitive aspect. Even small pores initially could lead to catastrophic events. A dam built across the river will impact the river valley causing the problems to plants, animals, roads, farms and could be highly disruptive for the sea-animals. These are and can proof socially and environmentally detrimental though the advantages seems fruitful, it is difficult to postpone the disadvantages.

Let us compare the Hydro-kinetic and Hydro power generation of electricity.

While the hydro-kinetic energy generates electricity through the use of moving fluids, hydro-power electricity is generated through potential energy of the water though commonly through the use of water turbines.

In the hydro-power system the power is extracted from the water was dependent upon the volume of the water and the difference in height between the source and water’s outflow. The theory of hydro-power lies in its utility of “flow of high pressure water from one height to another”. Following is the picture depicting the utilisation

of flowing water from distant height from one reservoir to another.

Turbines are used which contains metal coils surrounded by magnets. When the magnet spills over the metal coils, electricity is produced.

The theory of generating electricity remains in the use of water however in the hydro- kinetic – energy is produced by the kinetic or motion energy in the flowing fluid. And hence its different from traditional hydropower which produces energy through the pressure of water created by vertical height. Hydrokinetic electricity operates without needing the vertical height or in simple words dam. What was really needed was only “Speed” to make the turbines rotate and generate electricity.

The advantage of practicing hydro-kinetic energy is highly economical, less cost effective and avoids any environmental threats that are posed due to construction of dam. Socially speaking also it has its utility of not disrupting the lives of people who could either experience floods or evacuation from their place.

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