Select

In: Business and Management

Submitted By poolkar13
Words 394
Pages 2
Todas las culturas que nos han precedido supieron aprovechar la energia del agua para mover molinos, hacer funcionar forjas o batanes, elevar el agua mediante norias o represarla con azudes y conducirla a puntos distantes del rio o manantial utilizando acequias, sifones y acueductos.
Las tecnologias utilizadas nos muestran ingeniosos procedimientos de ingenieria \avant la letre", que han unido a su utilidad una gran belleza y constituyen un gran patrimonio historico de obras hidraulicas.
Pero el descubrimiento de la maquina de vapor, y despues de la electricidad, introdujo cambios sustanciales en la relacion del hombre con el agua y la energia.
Se podian aprovechar grandes desniveles para generar energia y se poda utilizar energia para utilizar el agua en sitios distantes, o a mayores cotas respecto del punto de captacion.
Las posibilidades de utilizar la energia potencial del agua aumentaron enormemente con la union de turbina y alternador, transformando la energia mecanica en electrica, que poda transportarse y usarse a largas distancias. Las bombas hidraulicas utilizaban energia para dar presion al agua, invirtiendo su camino natural en los rios o acuiferos.
El agua y la energia de ella obtenida que siempre se habian utilizado en las cercanias del rio podian disociarse y trasladarse a lugares distantes: se abrio una revolucion energetica y de intensificacion de usos del agua para el abastecimiento de poblaciones, el regadio y la industria.
Hoy, mas de un siglo despues de haberse iniciado este proceso, consideramos como natural esta intensa relacion del agua y la energa, pero es conveniente que reflexionemos sobre los limites que deberemos introducir en esta relacion, en una epoca que nos preocupa nuestro bienestar actual, pero tambien la sostenibilidad del mismo.
Se trata de un debate abierto en espana desde hace una decada, similar al desencadenado en California…...

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