PSC 4011

Electricity:

What’s the connection?

PSC 4011Energy: Transformations & Uses

PSC 4011Energy: Transformations & Uses

Ep

transformed into Ek

Ek transformed into Emechanical

Emechanical

transformed into Eelectrical

PSC 4011Energy: Transformations & Uses

Hydroelectric generating station

First Potential energy of water (at reservoir) is transformed into kinetic energy

Second Kinetic energy of water is transformed into mechanical energy (turbine)

Third Mechanical (rotary) energy is transformed into electrical energy (generator)

PSC 4011Energy: Transformations & Uses

Disadvantages (Hydro)

Risk of flooding Change in water levels Fish habitats affected

Advantages (Hydro)

Clean energy Renewable energy Low cost energy

PSC 4011Energy: Transformations & Uses

Chemical energy transformed into Ek

Ek transformed into Emechanical

Emechanical

transformed into Eelectrical

PSC 4011Energy: Transformations & Uses

Conventional Thermal generating station

First Chemical energy of fuel is transformed into kinetic energy (at boiler)

Second Kinetic energy of water is transformed into mechanical energy (turbine)

Third Mechanical (rotary) energy is transformed into electrical energy (generator)

PSC 4011Energy: Transformations & Uses

Disadvantages (Thermal)

Pollution Not renewable energy Human health

Advantages (Thermal)

Job creation Improves economy Low cost energy

PSC 4011Energy: Transformations & Uses

Nuclear energy transformed into Ek

Ek transformed into Emechanical

Emechanical

transformed into Eelectrical

PSC 4011Energy: Transformations & Uses

Nuclear generating station

First Nuclear energy of fuel is transformed into kinetic energy (at reactor)

Second Kinetic energy of water is transformed into mechanical energy (turbine)

Third Mechanical (rotary) energy is transformed into electrical energy (generator)

PSC 4011Energy: Transformations & Uses

Disadvantages (Nuclear)

Radioactive waste Safety risk Very expensive

Advantages (Nuclear)

High yield Pollution (GHG’s) free Near location

PSC 4011Energy: Transformations & Uses

Ek transformed into Emechanical

Emechanical

transformed into Eelectrical

Wind energy transformed into Ek

PSC 4011Energy: Transformations & Uses

Wind generating station

First Wind energy of fuel is transformed into kinetic energy (at blades)

Second Kinetic energy of water is transformed into mechanical energy (gear)

Third Mechanical (rotary) energy is transformed into electrical energy (generator)

PSC 4011Energy: Transformations & Uses

Disadvantages (Wind)

Low yield Cannot be stored Sound pollution

Advantages (Wind)

Clean energy Renewable energy Free energy