Average Light Intensity in an Annular Photochemical Reactor

Abstract

Light intensity profile and average light intensity in an annular photochemical reactor were investigated theoretically and experimentally. Although radiation from a jacketed high pressure mercury lamp in the whole range of solid angle was relatively close to that from a diffuse line source, the specular line source approximation was valid in a particular range of solid angle subtended by the reactor volume. The light intensity profile measured by CdS probes, the observed photoreduction rate of potassium ferrioxalate and the efficiency of light utilization in this particular lamp-reactor system were explained well by the specular light source model.