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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

EXPERIMENTAL DESIGN FOR REFLECTION MEASUREMENTS OF HIGHLY REACTIVE LIQUIDS WITH APPLICATION TO LIQUID SODIUM

Get access (open in a dialog) DOI: 10.1615/IHTC7.2650
pages 463-467

Abstract

A versatile goniometry system with associated electronic components, vacuum and optical subsystems has been assembled. It is designed to measure spectral, specular reflectance of highly reactive liquids over a spectral range of 1 to 15 m and various incidence and reflection angles off the normal direction. The capability of measuring refectances of liquid substances clearly distinguishes this experimental design from conventional systems which are applicable only to solid substances. This design has been used to measure the thermal radiation properties of liquid sodium and the results on spectral, specular reflectances are presented. Close agreement is found between the present liquid sodium reflectivity measurements and solid sodium reflectivity measurements made by others. Results show liquid sodium reflectivity to be 0.983 ± 0.016 in the range of wavelengths from 1 µm to 15 µm at an incidence angle of 7.5°.