How is electricity produced through water?. Potential Energy of water - Gravitational Energy Potential Energy of water - Gravitational Energy Kinetic.

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Presentation transcript:

How is electricity produced through water?

Potential Energy of water - Gravitational Energy Potential Energy of water - Gravitational Energy Kinetic Energy of Water- Motion Energy Kinetic Energy of Water- Motion Energy Potential Energy of turbine – Mechanical Energy Potential Energy of turbine – Mechanical Energy Released and become kinetic energy – Motion energy Turned to Electrical Energy through generator

Transferring step 1 : * Water trapped stored great amount of potential energy – gravitational * Gravitational energy – Energy stored in object’s height and weight * Great amount of energy stored as the long trapping time of the water Potential Energy of water - Gravitational Energy Potential Energy of water - Gravitational Energy

Transferring step 2 : * Water flush down * Gravitational Energy Kinetic Energy – Motion Energy * Motion Energy – Stored in object movement * Energy increase as the speed increased Kinetic Energy of Water- Motion Energy Kinetic Energy of Water- Motion Energy

Transferring step 3 : * Potential Energy in turbine is released by the water as it turned the turbine * Mechanical Energy – Stored in object by tension * Potential Energy – Mechanical Energy Kinetic Energy – Motion Energy * Motion energy of water increase release more mechanical energy stored in the turbine to motion energy Potential Energy of turbine – Mechanical Energy Potential Energy of turbine – Mechanical Energy Released and become kinetic energy – Motion energy

Transferring step 4 : * Turbine turned connect to electrical wire * Motion Energy Kinetic Energy – Electrical Energy * Electrical Energy – Delivered by electrons, usually through wires * Motion energy in turbine transfer to electrical energy through generator Turned to Electrical Energy through generator

Energy loss: * Not all energy is released * Loss 1 – Encounter drag forces from penstock and pipe wall * Loss 2 – Heat and sound generated when hitting the turbine * Loss 3 – Water leave turbine still containing some motion energy

Energy loss: * Loss 4 – mechanical losses between the turbine and generator systems * Loss 5 – losses from generator inefficiencies losses from transformer and other power conditioning inefficiencies

* It is clean, it can reduce pollutions created. * It produces cheap electricity * It is producing electricity continuously * It is much safer than nuclear energy

* The dams that were created to store the water energy is damaging the environment. * The dams that need to be created to generate hydroelectricity is really expensive, the Hover Dam in USA costs 690 million dollars and the Three Gorges Dam in China costs 37 billion dollars. * Structural failures of dams all over the world had caused million of deaths.