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The Search for a Fleece Replacement – A Close Look at Active Insulation and the role of MVTR


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Home Forums Campfire Editor’s Roundtable The Search for a Fleece Replacement – A Close Look at Active Insulation and the role of MVTR

Viewing 6 posts - 26 through 31 (of 31 total)
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  • #3727406
    Garett A
    BPL Member

    @g

    I’d Love to second Brett Peugh’s kind request for a list if at all possible it would be a great resource.  Thank You for Your time and energy! : P

    #3727673
    Erik Norseman
    BPL Member

    @erik-norseman

    Locale: Okanagan

    Hi Stephen,

    Curious about the MTVR of the houdini air vs. houdini. I note that in this other paper of yours, the MVTR of the houdini is considerably lower than that stated in this article (about half the rate). Can you explain the difference, or where I may be mistaken in my comparison?

    Cheers,

    Erik

    #3727685
    Stephen Seeber
    BPL Member

    @crashedagain

    Hi Erik:

    Good observation.  At the time that early article was written, my MVTR test was performed without an interior circulating fan.  Shortly after that article was written, I introduced an  interior circulating fan, This fan reduces the effective resistance to vapor transmission of the air layer between the top of the permeation kettle surface and the test garment.  As a result, the measured MVTR went up for all subsequent tests.    So, the values I have obtained under the present testing procedure for the Houdini is 2250 g/m2/24hr and, the Houdini Air is 3120  g/m2/24hr.

    #3727695
    Steve H
    BPL Member

    @hop

    Stephen, Have you had a chance to test the Visp yet? Thanks.

    #3727722
    Erik Norseman
    BPL Member

    @erik-norseman

    Locale: Okanagan

    Thank you!

    #3727814
    wander lust
    BPL Member

    @sol

    Thank you for your eye-opening article Stephen.

    Could you please tell us what are the best wind shirts in terms of mvtr with a low cfm?

    Do you have the stats for the Black Diamond Alpine Start (2021) and the OR Helium Wind Hoodie?

     

    Thx

Viewing 6 posts - 26 through 31 (of 31 total)
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