Contrasting the Effect of Electric Current Between Vertical and Horizontal High-Pressure Mercury Discharge Lamps

Author

Ben Hamida, Mohamed Bechir ; Charrada, Kamel

Author_Institution

Unite d´Etude des Milieux Ionises et Reactifs, Inst. Preparatoire aux Etudes d´Ing. de Monastir (IPEIM), Monastir, Tunisia

Volume

41

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

1696

Lastpage

1702

Abstract

This paper discusses the thermal behavior of a high-pressure mercury lamp in a horizontal position compared to that of a vertical lamp when the supply current varies. The model adopted is 3-D, steady, and dc powered. After the validation of the model, pressure of the lamp is kept at 6 × 10⁵ Pa and the supply current varied from 1 to 10 A. Then, by comparing the case of the lamp in a horizontal position with that in a vertical one, the temperature fields, the flow of heat conduction, the flow of convective heat, and the accumulation of mercury behind the electrodes are analyzed.

Keywords

arcs (electric); convection; discharge lamps; electrodes; heat conduction; mercury (metal); plasma pressure; plasma temperature; plasma transport processes; 3-D model; Hg; arcs; convective heat; current 1 A to 10 A; dc powered model; electric current; electrodes; heat conduction; horizontal high-pressure mercury discharge lamps; mercury accumulation; pressure 600000 Pa; steady model; thermal behavior; vertical high-pressure mercury discharge lamps; Discharges (electric); Electrodes; Heating; Mathematical model; Plasma temperature; Solid modeling; Convection; electric current; energy transfer; heat conduction; high pressure; mercury discharge lamps; vertical and horizontal positions;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2263199

Filename

6547711