| Autor: |
J. Kent Koester, Albert J. Juhasz, Mohamed S. El-Genk, Mark D. Hoover |
| Rok vydání: |
1994 |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings. |
| DOI: |
10.1063/1.2950111 |
| Popis: |
A practical implementation of the two‐phase working fluid of lithium and NaK has been developed experimentally for pumped loop radiator designs. The benefits of the high heat capacity and low mass of lithium have been integrated with the shutdown capability enabled by the low freezing temperature of NaK by mixing these liquid metals directly. The stable and reliable start up and shutdown of a lithium/NaK pumped loop has been demonstrated through the development of a novel lithium freeze‐separation technique within the flowing header ducts. The results of a highly instrumented liquid metal test loop are presented in which both lithium fraction as well as loop gravitational effects were varied over a wide range of values. Diagnostics based on dual electric probes are presented in which the convective behavior of the lithium component is directly measured during loop operation. The uniform distribution of the lithium after a freeze separation is verified by neutron radiography. The operating regime for reliable freeze/thaw flow behavior is described in terms of correlations based on dimensional analysis. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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