Ministerio de Educación Instituto América TopicAlternative energy sources “Hidráulica power’’ Group: Changing earth 11°H -5 Subject: English Name: Kathya Rodríguez Teacher: Marta Rebolledo Grade: 11°H
IntroductionThe hydraulic power is that one whotakes advantage of two qualities ofthe water currents: the speed andthe position (kinetic and potentialenergy). The idea is very simple andthough it does not seem it removesusing for hundreds of years: we allhave seen mills that take advantageof the flow of a river to move a seriesof mechanisms that realize a work.
Hydraulic power: Definition: we must begin for defining hydroelectricity the same one it is a natural available resource in the zones that present sufficient quantity of water.• Also we can define it that one that is obtained of the utilization of the energies kinetic and potentially of the current of the water, jumps of water or tides.
Since it is the hydraulic power and since it is effected: Is a type of green energy when his environmental impact is minimal and uses the water force without repressing her, in opposite case it is considered to be only a form of renewable energy
Some advantages and disadvantages of the hydraulic power: advantages Disadvantages1. is inexhaustible whereas it does not change thehydrological cycle. 1 High cost in the initial installation.2 It has a low cost of maintenance. 2 Great environmental impacts in case of hydroelectric power stations3 It has a low impact in the environment.4 It has long life.5 It is possible to use both for smallconsumptions and for industrial level.
Benefits:• The hydraulic power is a generating source of so many resources since across the same one we obtain of the water (this one is a renewable resource) this water it is possible to collect and retain by means of dams. Part of the stored water is left to go out in order that one moves the blades of a turbine geared into a generator of electric power
The hydraulic machines can qualify attending to different criteria • According to the type of exchange 1. According to the variation of energy In the hydraulic engines, the energy of the fluid Bearing in mind the way in which the energy that crosses the machine diminishes, mechanical exchanges inside the machine his classification it can be energy being obtained, whereas in case of hydraulic generators, the process is the inverse like that: one, so that the fluid increases his energy on having crossed the machine. • Machines of positive or volumetric displacement. It is a question of one of the most ancient types of• Attending to the fluid type of energy dynamics that hydraulic machines and they are based on the is exchanged across the machine we have: displacement of a volume of fluid compressing it. The clearest example of this type of machines is the• Machines in which there takes place a pump for bicycles. They supply a flow that is not variation of the potential energy, as for example constant; to avoid it in occasions several join to Arquimedess screw. achieve a major uniformity. These machines are adapted for supplies of high pressure and low• · Machines in which there takes place a caudal variation of the kinetic energy, as for example wind generators, propellers or turbine pelton. These are named machines of action and do not have framework.• · Machines in which there takes place a variation of the entalpía (pressure), as for example the centrifugal bombs. These machines are named machines of reaction.
The hydraulic machines can qualify attending to different criteria• According to the encirclement • According to the movement • Other criteria exist, as the division in rotary According to the encirclement and alternative, depending on if the organ interchanger of energy has a rotary orAttending to the presence or not of framework: alternative movement, this classification isMachines since they can be the machines of very intuitive but he does not attend initiallyaction. basic of functioning of these machines.
conclusion• Hydropower has the quality to be renewable, it does not exhaust the primary source to exploit it, and it is clean, because its operation produces no pollutants of any kind. However, the environmental impact of large dams, for the severe alteration of the landscape and even the induction of a distinct microclimate at your site, have undeserved kindness ecological concept in recent years. At the same time, the maturity of the operation means that in developed countries are not only attractive locations for developing new hydroelectric plants.