Temperature Measurements of High Temperature Gas by Laser Diagnostics

High Temperature Gas Chromatography

Gas chromatography (GC) is generally believed to be restricted to the analysis of ‘volatiles’ and is less applicable to the analysis of so-called ‘heavy’ compounds. The introduction of persilylated glass and fused silicea columns, of thermostable stationary phases and of non-discriminative injection devices in capillary GC (CGC) have made the deRnitions of ‘volatile’ and ‘heavy’ very Sexible. H...

Measurements of temperature profiles in gases by laser beam deflection

2014 The determination of temperature profiles in gases is based on the light beam deflection due to the refractive index gradient induced by a temperature gradient at constant pressure. The geometry considered for the system is a cylinder of arbitrary section characterized by isothermal generative lines. A parameter estimation method and a parabolical trajectory method are considered to treat ...

High temperature dilatation measurements by in situ laser interferometry under high magnetic field.

This article contains a description of a laser interferometer coupled with a furnace for in situ dilatation measurements under high magnetic field. The apparatus fits an 18 T superconducting magnet with a 32 mm diameter room temperature bore. This optical method was chosen for dilatation measurements because it is not perturbated by the magnetic field. The measured sample can be heated up to 15...

High Temperature Gas Cooled Reactors

Measurements and modeling of acetone laser-induced fluorescence with implications for temperature-imaging diagnostics.

Recent determinations of the temperature dependence of acetone fluorescence have permitted the application of acetone planar laser-induced fluorescence imaging, which was already popular for mapping concentration, to the measurement of temperature. With a view toward developing temperature-imaging diagnostics, we present atmospheric-pressure fluorescence and absorption results acquired with exc...