We have an exciting post today focusing on one of the pieces of equipment at our United Downs site – the turbine! Read on to find out the turbine’s role in our geothermal power plant!
Our Project Manager, Charlotte Wilkins, explains more about the turbine below:
“The turbine, seen to the left of the below picture wrapped in silver insulation, is the central component in the ORC system.
When the superheated motive fluid is released into the evaporator, it immediately changes state from a liquid to a gas, and this creates pressure in the evaporator. The pressure escapes down a pipe to the turbine, and by acting on the turbine blades, forces it to spin. The spinning turbine is used to turn the generator, which by turning a conductor in a magnetic field, induces an alternating electric current. Thus the turbine takes potential energy from pressure converting it to angular kinetic energy at the turbine and then electrical energy at the generator.
The generator and turbine have been carefully aligned using lasers and then locked in position to ensure minimal noise and vibration. The turbine itself is continuously sprayed with oil to prevent wear, and the oil is collected and recirculated; it is estimated that it will only use one barrel of oil a year.”
Follow us to keep up to date with the exciting developments happening at our United Downs site over the coming months, as we prepare to switch on the UK’s very first geothermal power plant! You don’t want to miss it!
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