Pressure shell heat exchanger - for transfer of heat from a primary to a secondary cooling fluid in a nuclear reactor

摘要

Nuclear reactor installation, comprising a cylindrical pressure vessel, in which the reactor core is centrally situated so as to leave an annular space round it, a heat exchanging pressure vessel in which steam is produced mounted in the annular space, with a large number of tubes thereon, the interior of the tubes being connected to the annular space, a feed water inlet orifice penetrating into the cylindrical pressure vessel so as to establish communication between the volume between the heat exchanger pressure shell and the external surfaces of the tubes and an outlet for removal of steam communicating with that volume so as to permit the discharge of steam from the heat exchanger pressure shell. A pump is pref. provided to circulate primary cooling fluid from the reactor core through the annular space and the interior of the tubes. System gives a more compact assembly, partic. suitable for nuclear power plants designed for ship propulsion. No connecting pipes are required for the heat exchanges nor the bulky and complex inlet and discharge branches for the sec. coolant.