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2021 – Sensing ultraviolet light emission from hydrogen flames: Flame detection and flame monitoring in CO2 emission free domestic boilers

11. junio 2021 von sglux

Bielefeld, S.E., TU Delft Electrical Engineering, Mathematics and Computer Science


Master Thesis

Abstract
As a contribution to the decarbonisation of domestic heating, the graduation project investigates the feasibility of the application of UV sensor technology for flame detection and flame monitoring in hydrogen-powered domestic gas boilers. The research includes empirical studies and an analytical approach to describe influences on the sensor signal strength.

Publicado en: Investigación, Veröffentlichungen und Berichte Etiquetado como: flame, hydrogen, irradiance_lo, prod, stability

2019 – UV degradation anaylsis of SiC and AlGaN based UV photodiodes

11. junio 2019 von sglux

Dr. Niklas Papathanasiou, sglux GmbH, Berlin, Germany

SiC AlGaN Aging Report

Abstract
SiC and AlGaN based UV photodiodes had been irradiated by Hg medium pressure lamps for 90 hours and a UV irradiation intensity of 60mW/cm². The SiC photodiodes showed no measurable degradation whereas the AlGaN photodiodes lost 80 % – 85 % of sensitivity.

Publicado en: Investigación, Veröffentlichungen und Berichte Etiquetado como: irradiance_hi, led, photodiodes, science, stability

2017 – Degradation of opaque quartz-glass diffusers under high intensity UV irradiation

11. junio 2017 von sglux

N. Papathanasiou, G. Hopfenmüller, Michael Matalla, T. Weiss,
sglux GmbH, Berlin, Germany

Presentation on IUVA World Congress Spotlights Water Disinfection Technologies 2017, Dubrovnik, Croatia

Abstract
In UV water purification applications UV sensors are monitoring the dosage of UV irradiation as according to ÖNORM and DVGW standards. sglux GmbH is manufacturing such sensors employing opaque synthetic quartz-glass diffusers as entrance windows. This paper investigates the influence of high-intensity UV irradiation on the transmission behavior of these diffusers. Quartz-glass and micro-porous quartz-glass were investigated. The sensors were continuously monitored while irradiated by a 1kW medium pressure Hg lamp with a total UV irradiance of 1000mW/cm² for 800 hours. Before and after the aging period the total transmissions of the diffusers were measured.

Publicado en: Investigación, Veröffentlichungen und Berichte Etiquetado como: diffuser, irradiance_hi, science, sensors, stability

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Richard-Willstätter-Str. 8
12489 Berlin, Alemania
Tel: +49 (0) 30 53 01 52 11
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