Light & Engineering 27 (6)

Volume 27
Date of publication 12/20/2019
Pages 133-136

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Electrodeless UV Lamp on the Basis of Low-Pressure Mercury Discharge in a Closed Non-Ferrite Tube. L&E 27 (6) 2019

Articles authors:

Pavel V. Starshinov, Oleg A. Popov, Igor V. Irkhin, Vladimir A. Levchenko, Victoriya N. Vasina

Pavel V. Starshinov, M. Sc. He graduated from Lighting Engineering Department of NRU MPEI in 2015. Postgraduate student of Lighting Engineering Department

Oleg A. Popov, Dr. of Technical Sc., graduated from MPEI in 1965. He was a Professor of Light and Engineering Department at NRU MPEI from 2007 up to 25.11.2022 – the day of his death. 4.01.1943–25.11.2022

Igor V. Irkhin, Ph D. He graduated from MPEI. At present, he is the Leading Researcher, VEI – branch of FSUE “RFNC VNIITF”

Vladimir A. Levchenko, Ph.D. in Phys-Math Sciences. He graduated from MIPT. At present, he is Deputy Head of the laboratory of LIT Company

Victoriya N. Vasina, student of the chair Light and Engineering NRU MPEI

Abstract:

Experimental study of characteristics of a nonferrite electrode-less UV lamp with a length of 500 mm and width of 130 mm in the form of a closed quartz discharge tube with an inner diameter of 25 mm was conducted. The induction discharge was excited at a frequency of 1.7 MHz within the discharge lamp power Ppl ranging between 52 and 112 W in a mixture of mercury (~10-2 mm Hg) and argon (1.0 mm Hg) vapours by means of a 3-coil inductance located along the inner perimeter of the closed tube. With Ppl increasing: a) loss power in the inductance wire first decreased from 37 down to 22 W (Ppl = 84 W) and then increased up to 44 W; 2) the UV radiant flux of the lamp in a mercury light-band of 54 nm increased from 28 to 72 W; 3) radiant efficiency of the lamp at the light-band of 254 nm first increased from 31 to 48.5 % (Ppl = 84 W) and then slightly decreased down to 46 %; 4) radiant efficiency of the discharge plasma at the wavelength of 254 nm increased from 53 % to 65 %.

References:

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Keywords

DOI: https://doi.org/10.33383/2018-064