Examination of Tungsten Transport in Operating Halogen Lamp by Fluid Dynamics and Thermo Chemical Simulation

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  • 熱流体-化学平衡複合モデルによるハロゲン電球タングステン輸送現象の検証
  • ネツ リュウタイ カガク ヘイコウ フクゴウ モデル ニ ヨル ハロゲン デンキュウ タングステン ユソウ ゲンショウ ノ ケンショウ

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Tungsten transport in halogen lamp operation was examined by fluid dynamics and thermo-chemical simulation. Partial pressures of almost all species dramatically increased around the coil leads. The cause appears to be a stagnant flow of filling gases. Results of a life test showed that tungsten was slightly deposited at the coil leads. Such a tungsten deposit can be attributed to a high concentration of tungsten compounds during the gas phase.


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