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|Headquarters||Fenton, Missouri, USA|
|Vernon Eriksen (President, 1987-2012)|
|Products||Heat recovery steam generators|
|Subsidiaries||Nooter/Eriksen Environmental Technologies|
Nooter Eriksen, also known as Nooter/Eriksen or N/E, is a supplier of heat recovery steam generators (boiler technology), which are mostly found in combined cycle gas turbine power stations (CCGTs). These are also found in combined heat and power (CHP) systems, which tend to have a much smaller power output than CCGT stations.
Nooter Corporation was established in 1896. Nooter/Eriksen Cogeneration Systems was established in 1987 when Eriksen Engineering (headed by Vernon Eriksen) was taken over by the Nooter Corporation. Vernon Eriksen had joined Econotherm Corporation in 1985, which became Eriksen Engineering.
In the 1990s the market for heat-recovery steam generators for combined cycle gas turbines started. The company reached its peak for orders (c. 18,000 MW of plant) in 2001.
It makes heat recovery steam generators (HRSGs) for gas turbine units of over 8MW in power. Most of its units are for the 125-200MW power range. It has made over 800 HRSGs for use in CCGTs around the world. Around 380 of these HRSGs include supplementary firing. The HRSG can boost the thermal efficiency from around 30-40% to over 60%.