| 摘要 |
A tube heat exchanger having a substantially cylindrical housing, a pair of adjacent cylindrical headers disposed in the housing, and a multiplicity of downwardly extending U-shaped heat exchanger tubes connecting the headers to one another, one of the headers being an inlet header and the other thereof being an outlet header, both of the headers being connectible to pressurized water lines of a pressurized water nuclear reactor, includes a feedwater supply connected to the housing below the outlet header for supplying a quantity of feedwater into the housing up to a given level partly filling the housing during operation of the heat exchanger, the heat exchanger tubes extending upwardly from the outlet header above the given feedwater level and being formed with a U-shaped bend located above the given level. |
