Accession Number:

AD0271976

Title:

AN ANALYTICAL STUDY OF THE CONTINUOUS CHEMICAL REGENERATION OF SURFACES

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s):

Report Date:

1962-02-01

Pagination or Media Count:

1.0

Abstract:

This report analyzes the so-called regenerative process in which gaseous materials such as Cl react with the sublimating metal and transport it back to the hot surface in the form of a gaseous compound. The systems were considered to consist of 2 solid surfaces at differing temperatures with a gas-filled interspace. The major assumptions were that the gas phase was a continuum in which local chemical equilibrium existed and that the mass transport was described by ordinary gaseous diffusion equations. The conditions within the system required to prevent the destruction of the solid surfaces were discussed. Some of these conditions, employed in a simplified analysis, resulted in thermodynamic criteria for selecting the materials to be tested in regenerative systems. These hypothetical systems were considered W-Cl, Mo-Cl, W-Mo-Cl, and W-O. The interesting possibility arose of a system with hot and cold surfaces of different materials, both of them simultaneously stable within some band of operating conditions. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE