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Thread: My Hartman Electric Furnace

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    Supporting Member rgsparber's Avatar
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    rgsparber's Tools

    My Hartman Electric Furnace

    Back around 2002, Dan Hartman masterfully updated the 1984 electric furnace designed by David Gingery. In 2008, I stood on Dan's shoulders and attempted to improve on his design. Here is the result which has served me well.

    If you are interested, please see

    https://rick.sparber.org/modified%20...%20furnace.pdf


    Your comments are welcome. All of us are smarter than any one of us.


    Thanks,

    Rick
    Rick

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    Thanks rgsparber! We've added your Electric Furnace to our Heating and Cooling category,
    as well as to your builder page: rgsparber's Homemade Tools. Your receipt:




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    Thanks Rick,
    I love your PDFs. Have you ever looked a foamed cement? One day if people ever stop bothering me I need to build a furnace and I have seen a few people using foamed cement sealed with Waterglass as the insulator with very good results. I like the fact that it is easy to work with and castable.
    Here is a link to a foam generator that works well: http://pelagic.wavyhill.xsmail.com/

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    Supporting Member rgsparber's Avatar
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    rgsparber's Tools
    Quote Originally Posted by NortonDommi View Post
    Thanks Rick,
    I love your PDFs. Have you ever looked a foamed cement? One day if people ever stop bothering me I need to build a furnace and I have seen a few people using foamed cement sealed with Waterglass as the insulator with very good results. I like the fact that it is easy to work with and castable.
    Here is a link to a foam generator that works well: http://pelagic.wavyhill.xsmail.com/
    I don't have any background in cement but the paper is certainly interesting. I couldn't find a date so wonder when it was written and how have samples fared over time.

    I know that mixing high temperature cement and perlite is a common procedure when making furnaces. It would have a similar outcome.

    Thanks,

    Rick


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