Avedøre Power Station

The Avedøre Power Station ( Danish : Avedøreværket ) is a combined heat and power station, located On in Avedøre , Denmark , just south of Copenhagen , and is owned by Ørsted A / S. Avedøre Power Plant is one of the most efficient of its kind, being able to utilize as much as 94% of the energy in the fuel and convert 49% of the fuel energy into electricity. [1] Apart from using coal , petroleum and natural gas , the plant runs on a wide variety of biomass fuelsstraw and wood pellets . 

The plant consists of two units with a total capacity of 793 MW of electricity and 918 MW of heat. [1] The combination of Producing electricity ( combined heat and power ) and heat for district heating at the Saami time is Widely used in Denmark and the rest of Scandinavia , due to the need of domestic (and industrial) heating together with the Danish energy companies putting a big effort into optimizing the energy plants.

The Avedøre Power Station was designed by the architects Claus Bjarrum and Jørgen Hauxner.

Avedøre unit 1

Having been built in 1990, this is the oldest unit. Coal was the primary fuel used in this unit, but can also be used. By using the heat of the power generation for the district heating , Avedøre unit 1 attained an energy conversion efficiency of up to 91%. This made Avedøre 1 of the world’s most efficient coal-fired power plants. As of 2015 , it is being converted to coal pellets at a price of DKK 740 million. It will burn 1.2 million tonnes of wood pellets per year, reducing CO2 emissions with about a million tonnes. [2]

Avedøre unit 2

Having been built in 2001, this is the newest and most efficient unit at Avedøre Power Station. It is able to burn a wide variety of fuels like natural gas , heavy fuel oil , straw and wood pellets in the same burners. It has a super critical boiler , built by the Danish company Burmeister & Wain Energy. [3] The Avedøre unit 2 has a production capacity of 585 MW of electricity and 570 MW of heat and is the most efficient of the two units.

The Avedøre unit 2 also consists of multiple sub-units. The main sub-unit, the 80 meter (260 ft) super critical boiler is linked to a steam turbine and an electrical generator . One of the world’s biggest biomass boilers is also connected to the turbine. Furthermore, unit 2 includes two separate gas turbines with a capacity of 110 MW each. [4]

Avedøre unit 2 has an electrical efficiency of 49%, which makes it one of the world’s most efficient. This record is obtained when the unit is only producing electricity. When also producing heat for the district , the heat efficiency decreases, the heat exchange is carried out at a higher temperature. If the export of heat energy to district heating is taken into account the energy conversion efficiency Reaches 94-96%, making it one of the World’s Most efficient combined heat and power (CHP) stations. [1] In preparation for conversion to 100% biomass in 2027, the plant has received 360 ton crane capable of transferring 800 tons of wood pellets per hour from ship to shore,[5] Despite some environmentalists question the benefits of biomass. [6]

As a by-product, a high quality plaster is made when cleaning the flue gas .

See also

Avedøre Holme Offshore Wind Farm

References

  1. ^ Jump up to:a b c “Avedøre Power Station ( Avedøre Vaerket )” . DONG Energy. Archived from the original on 2014-03-17 . Retrieved 2014-03-17 .
  2. Jump up^ Wittrup, Sanne. “Dong Energy starter ombygning af Avedøreværket” Ingeniøren , 27 March 2015. Accessed: 27 March 2015.
  3. Jump up^ “Burmeister & Wain Energy A / S” . Burmeister & Wain Energy A / S . Retrieved 2010-12-18 .
  4. Jump up^ “The Avedoere Plant 2” . ISC Innovative Engineering . Retrieved 2010-05-23 .
  5. Jump up^ “Avedøreværkets nye kran kan flytte 800 ton træpiller i timen”. Ingeniøren, July 2013.
  6. Jump up^ “Biomass darker than coal”. Ingeniøren, July 2013.