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Springs in heat exchange tubes - your thoughts?

Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by thz123, Jan 6, 2013.

  1. thz123

    thz123 Member

    Joined:
    Jan 8, 2009
    Messages:
    84
    Loc:
    IOWA
    About two years ago, on this forum, there were threads regarding using springs in the heat exchange tubes. The purpose was to increase the heat output. I am interested in your experience with the springs after 2 years of using them? Are you still using them? Is the air flow restricted? Do you believe your air flow temp's have increased? Thanks

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  2. SwineFlue

    SwineFlue Minister of Fire

    Joined:
    Nov 3, 2012
    Messages:
    605
    Loc:
    NE Pa
    The thread is here:
    http://www.hearth.com/talk/threads/quadrafire-castile-experiment.58216/
    Its 8 pages include some updates from this season.
  3. tjnamtiw

    tjnamtiw Minister of Fire

    Joined:
    Mar 9, 2009
    Messages:
    4,054
    Loc:
    North Georgia
    Thanks for looking that up, Swineflue. That should answer most questions. Mine are still in there doing what they did two years ago > less heat up flue means more heat into the room. It would make no sense to go back. I only wish that there were a way to create more surface area on the outside of the tubes to absorb more heat.

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