Patent ID: 7111832

Claim:
A multistage pressure condenser having a plurality of chambers at different pressures and adapted to merge and pressure-feed condensates accumulated in the plurality of chambers, the condenser comprising: a reheat chamber, partitioned off with a pressure barrier in a lower portion of a low pressure chamber, as the chamber on a low pressure side, for introducing and accumulating low-pressure-side condensate; high pressure steam introduction means for introducing high pressure steam within a high pressure chamber, as the chamber on a high pressure side, into the reheat chamber; low pressure condensate introduction means for introducing low pressure condensate into the reheat chamber; and circulating flow generation means for generating a circulating flow in the condensate in the reheat chamber to cause surface turbulent heat transfer to promote heat transfer to the condensate by high-pressure-side steam, wherein the circulating flow generation means is constituted such that a flow-through slit, through which the low-pressure-side condensate flows downward, is provided in the pressure barrier, and the circulating flow is generated in the condensate of the reheat chamber by the low-pressure-side condensate which flows downward through the flow-through slit, with a reverse flow thereof being suppressed.