How to Reduce Energy Requirements for Efficient Vacuum Furnace Operation

Author: Réal Fradette, Senior Technical Consultant, Solar Manufacturing

Originally Published: June 2012

Of the many papers written on methods of reducing vacuum-furnace operating energy requirements, most tend to highlight one specific furnace area.  This article outlines various methods of reducing energy requirements of several furnace functions. The following will be discussed:

  • Controlling and minimizing hot zone energy losses
  • Variable frequency drives on vacuum pumps and gas cooling motors
  • Minimizing diffusion pump energy consumption
  • VFDs and temperature controlling logic on cooling water system
  • Conclusions


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