Title :
Contrast the Effect of the Mass of Mercury Between the Vertical and Horizontal Mercury Discharge Lamps
Author :
Ben Hamida, M.B. ; Charrada, K.
Author_Institution :
Unite d´´Etude des Milieux Ionises et Reactifs, Inst. Preparatoire aux Etudes d´´Ing. de Monastir (IPEIM), Monastir, Tunisia
Abstract :
This paper discusses the thermal behavior of a high-intensity mercury lamp in a horizontal position, compared with that of a vertical lamp when the pressure of the lamp varies. The model adopted is 3-D, steady, and direct-current powered. After the model validation, we keep the supply current equal to 3.2 A, and we vary the pressure of the lamp to 105- 106 Pa. Then, we analyzed the temperature fields, the heat conduction flow, the convective flow, and the accumulation of mercury behind the electrodes for the case of the lamp in a horizontal position by comparing it with those of a lamp in a vertical position.
Keywords :
convection; discharge lamps; discharges (electric); electrodes; heat conduction; mercury vapour lamps; plasma pressure; plasma temperature; plasma transport processes; solid modelling; 3D model; convective flow; current 3.2 A; direct-current powered model; heat conduction flow; high-intensity mercury lamp; horizontal mercury discharge lamps; horizontal position; lamp pressure; mercury accumulation; mercury mass; pressure 100000 Pa to 1000000 Pa; thermal behavior; vertical mercury discharge lamps; Discharges (electric); Electrodes; Equations; Heating; Mathematical model; Plasma temperature; Energy transfer; high-intensity mercury lamp; local thermodynamic equilibrium; mass of mercury; vertical and horizontal positions;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2012.2203614
