Wireless measurement of duct temperatures on aluminum smelting pots: Correlation to roofline HF concentration

Daniel Artemus Steingart, James W. Evans, Andrew Redfem, Paul K. Wright, Neal Dando, Weizong Xu, Michael Gershenzon, Henk Van Der Meyden

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Previous papers described wireless devices (motes) for measuring the temperature of the gas in ventilation ducts from smelting pots, and the heat flux through the pot shells. This paper describes more extensive, longer term measurements of duct temperature carried out on ten pots at a smelter in 2006. Measurements were carried out for 43 days and 1.3 million temperatures were recorded, along with simultaneous real-time measurements of roofline HF concentration. The duct motes were self-powered using thermoelectric generators operating off temperature differences between the duct gasses and the surrounding air. Temperatures measured by the motes reflected all pot-work such as removal of cover panels or opening of end doors. Even after elimination of temperatures during active pot work, significant variations in duct temperature were observed, both from pot-to-pot and from day-to-day on individual pots. The variations in pot duct temperature exhibited a good correlation with roofline HF concentrations.

Original languageEnglish (US)
Title of host publicationLight Metals 2008 - Proceedings of the technical sessions presented by the TMS Aluminum Committee at the TMS 2008 Annual Meeting and Exhibition
Number of pages5
StatePublished - 2008
EventLight Metals 2008 - New Orleans, LA, United States
Duration: Mar 9 2008Mar 13 2008

Publication series

NameTMS Light Metals
ISSN (Print)0147-0809


OtherLight Metals 2008
Country/TerritoryUnited States
CityNew Orleans, LA

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry


  • All-héroult cells
  • Fluoride emissions
  • Temperature sensing
  • Wireless sensing


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