Untersuchungen zur selbsttätigen Nachwärmeabfuhr bei Hochtemperaturreaktoren unter besonderer Berücksichtigung der Naturkonvektion
Untersuchungen zur selbsttätigen Nachwärmeabfuhr bei Hochtemperaturreaktoren unter besonderer Berücksichtigung der Naturkonvektion
The high temperature gas cooled reactor (HTGR) offers the possibility at a suitable design and dimensions to master heaviest accidents. The produced decay heat is removed safely from the reactor core at this as hypothetically classified accident, failure ofall heatsinks at simultaneous depressurisat...
Saved in:
Personal Name(s): | Stöcker, B. (Corresponding author) |
---|---|
Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
1998
|
Physical Description: |
134 p. |
Document Type: |
Report |
Research Program: |
Addenda |
Series Title: |
Berichte des Forschungszentrums Jülich
3504 |
Link: |
OpenAccess |
Publikationsportal JuSER |
The high temperature gas cooled reactor (HTGR) offers the possibility at a suitable design and dimensions to master heaviest accidents. The produced decay heat is removed safely from the reactor core at this as hypothetically classified accident, failure ofall heatsinks at simultaneous depressurisation. No temperatures occur that lead to an increased fission product release or to a damage ofthe fuel elements. The test facility SANA was installed at the Research Centre Jülich to research the heat transport mechanisms inside the core of a HTGR. The test facility consists of a heated pebble bed inside a furnace to simulate the thermal conditions of such a HTGR-core. Main goal ofthe experiments are the research ofheat transport mechanisms ofa pebble bed. An extensive data base consisting of over 100 data sets is recorded. During the test series the main characteristic parameters (pebble material and diameter, inert gas, heating power and geometry) of the experiment are changed. The tests confirm the analytical methods to estimate the effective heat conductivity of pebble beds. The numerical analysis ofthe experiments permits statements about the convective heat transport in a pebble bed. The results are transferred to HTGR-concepts. |