What is extraction condensing steam turbine

• Steam can be obtained at each stage of the multi-stage turbine.
• Extracted steam can be used to meet the demand of process consumer at an intermediate pressure and left over to the condenser.
• At condenser, steam is condensed into feel water which ultimate returns to boiler again to reuse.
• Condensate extractions pump obtains condensate from the hot well and after desecration boiler feed pump carries it is a boiler.

Extraction condensing steam turbine

Advantages

• Electrical power is independent of the thermal load as steam is regulated properly through the turbine.
• High / low-quality fuel can be used.
• Suitable when steam demand is varying in nature.

Disadvantages

• Higher capital cost.
• Suffers from low fuel efficiency.
• Condensing steam turbine demand high water cooling.
• Environment impact on the use of low-quality fuel.
• Complicated foundations so increased the cost of civil constructions.