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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

LOW PRESSURE LITHIUM CONDENSATION

Get access (open in a dialog) DOI: 10.1615/IHTC8.70
pages 1641-1646

Resumo

Low pressure experiments were conducted to evaluate the laminar film condensation coefficients of lithium at system pressures ranging from 1.3 to 26 Pa. Boiled lithium was condensed on the inside of a 7.6-cm (ID), 409 stainless-steel pipe. The condensed lithium was allowed to reflux back to the pool boiling region below the condensing section. The heat fluxes in these experiments varied from about 1.3 × 104 w/m2 at 833 K to 1.3 × 105 w/m2 at 898 K, giving heat transfer coefficients of 4078 and 37805 w/m2. K, respectively. The condensing heat transfer coefficients obtained for lithium, while similar to other liquid metals, is only about 0.3% to 3% of the Nusselt theory values for film condensation. Boiling and condensing of lithium at low, less than atmospheric, pressure appears to be an efficient energy transport mechanism that may find use in space applications or cooling of the first wall in fusion reactors.