Accession Number:

ADA170601

Title:

Compatibility of Sodium and Lithium in Superalloy Heat Pipes

Descriptive Note:

Final rept. 1 Jan-31 Dec 1984

Corporate Author:

TOWER AND KAUFMAN FAIRVIEW PARK OH

Report Date:

1985-04-01

Pagination or Media Count:

113.0

Abstract:

Heat pipes of superalloy materials are attractive for low power terrestrial topping cycles and space power systems because of availability and relatively low cost. Six pipes of each material, stainless steel 304L and 310S, Hastalloy X and B, and Haynes 188 were tested. Eighteen pipes used sodium as a working fluid and were tested in an air environment to study both internal and external compatibility. The remaining twelve used lithium as a working fluid and were tested in a vacuum environment to study internal compatibility and external vaporization of material components. Some pipes had screen wicks and others had metal fiber wicks. Test facilities and procedures are discussed in detail. Compatibility as well as performance of sodium pipes and lithium pipes is compared. As an aid in explaining the performance of the pipes, a simple theoretical analysis was made, and the results are discussed.

Subject Categories:

  • Properties of Metals and Alloys
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves

Distribution Statement:

APPROVED FOR PUBLIC RELEASE