Generating electricity ( GEOTHERMAL) Describe how steam drives a turbine connected to a generator Describe how naturally occurring steam can be used to drive turbines
Thermal power station block diagram BOILER TURBINES GENERATOR BOILER Fuel is burnt to turn water into high pressure steam. TURBINE High pressure steam turns a turbine (like a windmill) GENERATOR The turbine rotates the coils of a generator to produce electricity.
Geothermal energy In some volcanic areas hot water and steam rise to the surface. The steam can be tapped and used to drive turbines. This is known as geothermal energy.
Geothermal versus thermal power stations ADVANTAGES Renewable No greenhouse gases No acid rain No radioactive waste Short start up time DISADVANTAGES Very limited locations Expensive to build