Steam condensers

Functions:• Lowers back pr. of turbine exhaust• Enables recovery and recirculation of feed

water• Enables the removal of air and non-

condensable gases

Elements of condenser

Types of condensers

• Jet condensers- Low level jet condenser- High level jet condenser- Ejector jet condenser

• Surface condensers- Shell and tube type- Evaporative type

Low level counter flow jet condenser

Low level parallel flow jet condenser

High level jet condenser

Ejector condenser

Surface Condenser - Shell and tube type condenser

Down flow surface condenser

Central flow surface condenser

Evaporative steam condenser

Advantages:1. Lowers back pr. of turbine2. High vacuum efficiency3. Gives pure condensate4. Saves cost of fresh water5. Requires low power input for air extraction pump6. Cooling of condensate is easily controlled7. Low quality cooling water can be usedDisadvantages:8. Requires skilled workers9. Requires large floor space10. Large cooling water is req. - indirect cooling11. Higher installation cost