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Radiation field modeling of multi-lamp, homogeneous photoreactors

Paper ID Volume ID Publish Year Pages File Format Full-Text
27480 44026 2008 10 PDF Available
Title
Radiation field modeling of multi-lamp, homogeneous photoreactors
Abstract

For modeling and optimization of photoreactors, knowing radiation distribution inside the reactor is essential because the kinetics of photochemical and photocatalytic reactions are strongly dependent on the local incident radiation. In this work, a Monte Carlo multi-lamp radiation model is proposed. The model takes into account the reflection on the surface of the lamps, the refraction in the quartz lamp envelope, as well as the adsorption and the isotropic re-emission of radiation in the mercury vapor of the lamp. To quantify the shadowing effect among the lamps, the effective transmittance through a UV-lamp turned on, a lamp turned off, and a lamp quartz envelope have been measured. For validation purposes, experimental measurements have been performed using one, two, and three lamps. The model predictions show good agreement with the experimental results. Finally, in order to simplify the numerical solution of the model, the validity of assuming the lamps 100% opaque and 100% transparent have been analyzed.

Keywords
Modeling; Radiation; Multi-UV lamps; UV-reactor; Monte Carlo method
First Page Preview
Radiation field modeling of multi-lamp, homogeneous photoreactors
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 198, Issues 2–3, 15 August 2008, Pages 169–178
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering