The provided diagram illustrates the mechanical process by which a geothermal power plant converts underground heat into electrical energy. Overall, the system operates as a continuous cycle, utilising a deep injection well to transport cold water to a geothermal zone, where it is heated before being returned to the surface to drive a turbine.
Initially, cold water is held at the surface before being pumped down an injection well that reaches a depth of 4.5 kilometres. Once underground, the water circulates through a geothermal zone consisting of hot rocks, which significantly increases its temperature. This heated water is subsequently forced upwards through a production well.
Upon reaching the surface, the hot water enters a condenser, where it is transformed into steam. This steam is then directed into a turbine, causing it to rotate. The turbine is mechanically linked to a generator, which converts this kinetic energy into electricity. Finally, the generated power is transmitted via an electricity pylon for distribution. The entire process relies on the natural thermal energy of the earth to maintain the cycle of steam production and power generation.