Fast neutron reactor

摘要

A cylindrical inner vessel containing the reactor core is placed coaxially within a main vessel. Heat exchangers are disposed within the annular space formed between the two vessels, each heat exchanger being delimited by an outer shell and a coaxial inner shell which surrounds a central feed duct having a vertical axis. The upper end of the annular space communicates with a flared end portion of the central duct through a first circular window formed in the inner shell. The lower end of the annular space communicates with the region located between the inner vessel and the main vessel through a second circular window formed in the outer shell.