Imaging of the Temperature Distribution in a Catalyst Test Chamber using Laser Rayleigh Scattering

Sammanfattning: In order to accurately measure the effect on the gas concentration around catalysts in a high pressure environment using laser based techniques such as Laser Induced Florescence (LIF), accurate temperature maps of the test chamber used are required. In order to create such temperature maps Laser Rayleigh Scattering (LRS) is utilized which allows for a non-intrusive probing of temperatures in a two dimensional measurement area. We have created temperature maps for pressures of interest (100 mbar, 500 mbar, 900 mbar) for past and future catalyst measurements at various flows (100 ml/min, 500 ml/min, 900 ml/min). We also discuss the accuracy of these measurements and the usefulness of the data for the calibration of future concentration measurements.