Factors Affecting the Design of Turbine-Condenser Connections

Those features of the design of the interconnection between a large steam turbine and the condenser which may affect the plant heat rate or turbine reliability are reviewed. The performance losses resulting from geometric mismatching of turbine hood and condenser and those due to obstructions and extraneous flow injections are assessed. The effects on turbine reliability of differing arrangements for injecting extraneous steam or water flows are pointed out with examples. Suggestions are given for the practices to be followed in this area of plant design.