BBC

Dual Extraction-Condensing Turbo Alternator Set Images/TechnicalServices/Trading/BBC/bbc-thumb.jpg

Specifications:
 

Year of Construction : 1972
Output :  15,000 kW
Turbine Type :  D2EEQ2e38
HP-Turbine:                                                                           
Speed : 3,000 rpm
Live Steam Pressure : 56 bar - max. 64 bar
Live Steam Temperature : 450 °C - max. 475 °C
Live Steam flow : max. 114 t/h
  Extraction I = pressure between hp/lp-turbine  :  9.5 bar (0-62 t/h)
LP-Turbine:                                                                             
Speed : 3,000 rpm
Inlet steam : 9.4 bar / 245 °C
Live Steam flow : 75 t/h
Extraction II :  3.5 bar (0 - 41 t/h, max. 70 t/h)
Exhaust pressure fully condensing : 0.0525 bar
Exhaust Flow :  max. 47.5 t/h
Column1 Column2


Figures:

Original performance figures when operated at 56 bar / 450 °C live steam, 9.5 bar Extraction I and 3.5 bar Extraction II

Output 15,000 15,000 10,920 12,000 kW
Steam flow 114.0  90.5 64.4  47.5  t/h
Extraction flow I 62.0 42.0 16.0 0.0  t/h 
Extraction flow II 41.0  17.5 23.0 0.0 t/h
Condenser flow 11.0  31.0 25.4 47.5 t/h
Spec. steamconsumption 7.60  6.03 5.90 3.96 kg/kWh

Graph:

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Images/TechnicalServices/Trading/BBC/bbcgraph-thumb.jpg

 

Steam consumption curve.
(recalculated output for another project) 
 

Pictures:

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            Images/TechnicalServices/Trading/BBC/bbcpicture03-thumb.jpg        Images/TechnicalServices/Trading/BBC/bbcpicture01-thumb.jpg            Images/TechnicalServices/Trading/BBC/bbcpicture04-thumb.jpg
Opened turbine, top view of the already dismantled H.P. and L.P. upper casings. Lifting of the L.P. rotor. Partly dismanteld H.P. lower casing.