Heat exchanger for reactor core and the like
A heat exchange arrangement for transferring heat from a reactor gas coolant to a secondary fluid medium is described which consists of: in combination, vessel means defining a generally cylindrical cavity having a substantially vertical longitudinal axes, means defining an inlet passage intersecting the cavity adjacent the upper end thereof and enabling introduction of a high temperature reactor coolant into the upper end of the cavity, an exit passage intersecting the cavity at an elevation below the inlet passage, and a heat exchanger supported by the vessel means within the cavity. The heat exchanger includes a primary tube sheet generally adjacent the lower end of the cavity, a plurality of heat transfer tubes supported by the primary tube sheet so as to extend upwardly within the cavity. The heat transfer tubes are adapted to receive a secondary fluid medium upwardly therein, a first shroud disposed circumferentially of the heat transfer tubes and having at least one flow passage formed therein adjacent the primary tube sheet. The first shroud extends upwardly from the primary tube sheet to at least the height of the heat transfer tubes and having a substantially closed wall upper portion and an outwardly flared lower portion. The lower portion has at least one flow passage formed therethrough, and a secondary shroud substantially coaxial with the first shroud and extending upwardly within the cavity adjacent the inlet passage, the second shroud being isolated within the cavity and cooperative with the first shroud such that primary coolant entering the cavity flows downwardly within the coaxial shrouds and past the heat transfer tubes before exiting through the at least one flow passage.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4585053
- OSTI ID:
- 5772391
- Resource Relation:
- Patent File Date: Filed date 2 Sep 1982
- Country of Publication:
- United States
- Language:
- English
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