Accession Number : AD0631581

Title :   SOME DATA ON THE EFFECT OF ADDED OXYGEN ON HEAT EMISSION AS SODIUM FLOWS THROUGH A COOLED PIPE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Andreev,A. S. ; Fedorovich,E. D. ; Shchedrin,A. V.

Report Date : 23 MAR 1966

Pagination or Media Count : 12

Abstract : The solving of the problem of 'contact' thermal resistance which was discovered in working with liquid-metal heat carriers, particularly with alkali metals, to a great extent determines the effectiveness and dependability of heat-exchange equipment. The presence of 'contact' resistance outwardly reveals itself in the lowering of the coefficient of heat emission as compared with the theoretical values, and also in the instability of the heat exchange in time. Work was carried out for the purpose of obtaining data on the effect on the extent of this 'contact' resistance on temperature conditions and its relationship to relative content of oxygen in the sodium. The results of the experiments indicate that the cause of the phenomenon of contact thermal resistance on a cooled surface is the admixture of sodium oxide deposited from the liquid metal.

Descriptors :   (*LIQUID METAL COOLANTS, ADDITIVES), (*SODIUM, THERMAL PROPERTIES), THERMAL CONDUCTIVITY, THERMAL RADIATION, HEAT TRANSFER, INHIBITION, OXYGEN, SODIUM COMPOUNDS, OXIDES, DEPOSITION, HEAT EXCHANGERS, PIPES, USSR

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE