New Generation of Low Pressure Mercury Lamps for Producing Ozone

Abstract:

Producing ozone by means of a low pressure mercury discharge is still limited by such economical and technical factors as efficiency and lifetime of Low Pressure Mercury Lamps (LPMLs). With the introduction of a new “long life coating” technology for LPMLs at Heraeus, these lamps show up as an effective and reliable VUV-light source that can be used in ozone generation. Different coating technologies are compared in terms of radiation losses in the coating and depreciation of the mercury resonance line at λ=185 nm. The parameters of new ozone generating lamps are presented. A simple model with consideration of both the resonance lines at λ=185 nm and λ=254 nm for a practical calculation of ozone concentration in an air flow is proposed.

Keywords: Ozone; Low Pressure Mercury Vapor Lamps; Photochemical Air Treatment; Ultraviolet Radiation

Document Type: Research article

DOI: 10.1080/01919510802341012

Affiliations: 1: Heraeus Noblelight GmbH, Heraeus, Hanau, Germany