Engineering Board Exam Reviewer · Thermodynamics · easy

The function of the condenser in a steam power plant is to:

1. Superheat the steam before the turbine
2. Condense the exhaust steam and maintain a low back pressure on the turbine
3. Preheat the feedwater using flue gases
4. Increase the pressure of the feedwater

Answer

B. Condense the exhaust steam and maintain a low back pressure on the turbine

Solution

Lowering the turbine exhaust pressure increases the turbine work and the cycle efficiency.

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