Gas-cooled high temperature nuclear reactors
Patent
·
OSTI ID:6477281
A gas-cooled, and preferably helium cooled, graphite-moderated high temperature nuclear reactor of the kind having a pressure vessel containing a reactor core with fuel elements, graphite components and a primary coolant gas circuit including a steam generator and coolant gas blowers, has the steam generator disposed outside the pressure vessel and the steam generator includes a heat exchanger at least a portion of which is located above the level of the reactor core. This situation of the heat exchanger ensures that when the reactor is shut down, either intentionally or owing to a fault, a natural convection flow takes place through the coolant gas circuit and this natural convection flow is in the same direction as it is when the blowers are functioning so that the flow conducts away the decay heat from the core to the steam generator in the same way as when the blowers are in operation.
- Assignee:
- Hochtemperature-Kernkraftwerke Gmbh (HKG)(Germany, Federal Republic Of)
- Patent Number(s):
- US 4243487
- OSTI ID:
- 6477281
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210300* -- Power Reactors
Nonbreeding
Graphite Moderated
AFTER-HEAT REMOVAL
BLOWERS
BOILERS
CONTAINERS
COOLING SYSTEMS
ELEMENTS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUID FLOW
FLUIDS
GAS COOLED REACTORS
GAS FLOW
GASES
GCR TYPE REACTORS
GRAPHITE MODERATED REACTORS
HEAT EXCHANGERS
HEAT TRANSFER
HELIUM
HELIUM COOLED REACTORS
HTGR TYPE REACTORS
NONMETALS
PRESSURE VESSELS
PRIMARY COOLANT CIRCUITS
RARE GASES
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR SHUTDOWN
REACTORS
REMOVAL
SHUTDOWNS
STEAM GENERATORS
VAPOR GENERATORS
210300* -- Power Reactors
Nonbreeding
Graphite Moderated
AFTER-HEAT REMOVAL
BLOWERS
BOILERS
CONTAINERS
COOLING SYSTEMS
ELEMENTS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUID FLOW
FLUIDS
GAS COOLED REACTORS
GAS FLOW
GASES
GCR TYPE REACTORS
GRAPHITE MODERATED REACTORS
HEAT EXCHANGERS
HEAT TRANSFER
HELIUM
HELIUM COOLED REACTORS
HTGR TYPE REACTORS
NONMETALS
PRESSURE VESSELS
PRIMARY COOLANT CIRCUITS
RARE GASES
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR SHUTDOWN
REACTORS
REMOVAL
SHUTDOWNS
STEAM GENERATORS
VAPOR GENERATORS