Barford Power Station St Neots Community College Sixth Form Visit, May 2008.
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Transcript of Barford Power Station St Neots Community College Sixth Form Visit, May 2008.
![Page 1: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/1.jpg)
Barford Power Station
St Neots Community College Sixth Form Visit, May 2008
![Page 2: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/2.jpg)
Key Points
• The combined cycle power station is on the site of the old Barford A station, about 1.5 km from the school.
• Two gas turbines drive generators.• The waste heat from the turbines is used to
heat water in a boiler. This drives a steam turbine.
• These are some pictures of what is there.
![Page 3: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/3.jpg)
The back up
This is a turbine from a jet aeroplane that can provide the power for a “black start.
![Page 4: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/4.jpg)
Where the electricity leaves
![Page 5: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/5.jpg)
Closer up to the black start turbine.
![Page 6: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/6.jpg)
Air intake for the turbine
Filters Really thick wires
Transformers
High voltage wires
![Page 7: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/7.jpg)
Output Transformers
• They are huge.• The electricity comes in
at 25 000 V, 15000 A.• It leaves at 132 000 V,
2800 A.• With the lower current
and the bigger voltage, the wires don’t get so hot.
![Page 8: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/8.jpg)
Fuel
• The power station is fired using North Sea gas.
• You can see the massive pipes through which the gas comes.
• Thousands of cubic metres are used every day.
![Page 9: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/9.jpg)
Water Supply
The water comes from the St Neots supply
![Page 10: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/10.jpg)
Dimineralisation
• The water has to be very pure, otherwise it will damage the boiler and the turbines
• St Neots water is very hard, and the minerals have to be removed completely.
![Page 11: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/11.jpg)
Cooling Water
• The water in the boilers is recycled lots of times.
• It is cooled by cold river water.
• You can see the huge pumps that pump the river water.
• The river water is returned to the river.
• It does not get dirty.
Huge pumps
![Page 12: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/12.jpg)
Big wires carrying electricity from the generators
![Page 13: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/13.jpg)
Under the Boilers
• The boilers are huge boxes in which there are lots of pipes carrying water.
• The green pipes carry cool, clean water to the boiler.
• The boiler is heated by the hot exhaust gases from the turbine.
![Page 14: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/14.jpg)
The Condenser
• This condenses the steam under the turbine.
• This gets even more energy from the steam.
• It makes the power station more efficient.
![Page 15: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/15.jpg)
The Turbines
• The turbines turn at 3000 rpm.
• They have lots of blades that turn in the steam.
• Each blade costs about £10 000.
• If they break, the turbine “has a haircut”. This is very expensive.
![Page 16: Barford Power Station St Neots Community College Sixth Form Visit, May 2008.](https://reader038.fdocuments.in/reader038/viewer/2022102819/5697c0301a28abf838cdaf32/html5/thumbnails/16.jpg)
The Generator
• You can see how big it is.• The electricity is
generated in coils that surround a rotating electromagnet.
• The voltage is 25 000 V; the current is 15 000 A.
• The power is equivalent to 100 electric locomotives