IMPROVEMENTS RELATING TO NUCLEAR REACTORS
Patent
·
OSTI ID:4055522
Gas cooled reactors are referred to in which the fuel elements are contained in parallel, vertical conduits and the coolant flows in an upward direction. When the coolant flow in all conduits is practically equal, the quantity of heat absorbed per channel varies from a max. in the center to a min. in the periphery, being prortional to the neutron flux density. The resulting thermodynamical yield is not optimal. This inconvenience can be avoided by limiting the coolant flow in the outer conduits. A restricting device is designed, which is placed at the lower end of a conduit. The device consists of a pipe-shaped outer part, which can be attached to the wall at the entrance of the conduit, and a removable uter part. An annular pasricts the upward flow of the cooling gas. In the lower part of the annular passage the area of the transverse section diminishes gradually in the direction of the coolant stream. Above this part the crossl is constant over a cerf the invention are deable part has a support in the center of the fixed, pipe-shaped part of the restricting device. In the fourth embodiment the design is such that the supporting means is more inside the conduit. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-015247
- OSTI ID:
- 4055522
- Report Number(s):
- FR 1203611
- Country of Publication:
- France
- Language:
- English
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