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Thread: Code for Dryer Venting

  1. #16
    Senior Robin Hood Guy Ian Gills's Avatar
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    Sorry Runs with Bison. But mine is shiny copper. I ripped the stock one out and whacked a copper one in!

    Now, I must dash to brasso all my pipes.

  2. #17
    Extreme DIY Homeowner Scuba_Dave's Avatar
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    Really ? You put a copper dryer vent in?
    I've never even seen one, we want a pic !!

    Since I was building the garage I saw no point in trying to fix something that was being cut out for a door
    5 single PAIN windows in the basement & all of them were either not sealed at all or (3) had broken panes

    The new garage/Great Room I built sort of blocks the old vent
    (Ian calls this a 3 family Apt building I think)

    Last edited by Scuba_Dave; 09-20-2009 at 09:11 AM.
    DIY Handyman (not 4 hire)
    I have enough to do to my own house

  3. #18
    Senior Robin Hood Guy Ian Gills's Avatar
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    Yes, note how Scuba Dave bought a small house and then whacked that massive thing on the side of it.

    Kind of like a Prius pulling a 53 foot semi.

    The "Great Room"....


  4. #19
    Extreme DIY Homeowner Scuba_Dave's Avatar
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    T'was carefully planned so as not to be seen driving down the street (most of the time)
    It's not til you come up even with the house that it "appears"



    DIY Handyman (not 4 hire)
    I have enough to do to my own house

  5. #20
    Senior Robin Hood Guy Ian Gills's Avatar
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    The rest of your house looks a lot like mine. Minus the American flag of course.

  6. #21
    Extreme DIY Homeowner Scuba_Dave's Avatar
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    The back no longer looks like a Cape
    Addition on the left
    In the middleis the 16x16 sunroom w/wrap around deck
    Then to the right (not shown) is a small 7x10 greenhouse against the house
    2nd floro has been dormered for more room/Master bedroom



    DIY Handyman (not 4 hire)
    I have enough to do to my own house

  7. #22
    Senior Robin Hood Guy Ian Gills's Avatar
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    You didn't tell me you had a pool!

  8. #23
    Plumber Cass's Avatar
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    No Ian...You can't invite your self and family over for a dip...

  9. #24
    Senior Robin Hood Guy Ian Gills's Avatar
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    You're right Cass. In any case, it doesn't look like he has the room.

  10. #25
    Plumber Cass's Avatar
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    Ha Ha Ha....Maybe if you build Dave a pool house he will give you swimming rights...

  11. #26
    Extreme DIY Homeowner Scuba_Dave's Avatar
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    Psssst...Ian ....I have a pool
    One of the main reasons we bought the house
    There was a pool cabana that I added onto, now 10'x22' long
    Solar water heating system will be on the roof
    Plus a 3x10' bar outside - to be finished
    This was a few years back when I bought a new filter/pump (now inside)

    DIY Handyman (not 4 hire)
    I have enough to do to my own house

  12. #27
    In the trades Dana's Avatar
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    Quote Originally Posted by jimbo View Post
    Actually, I don't see a code issue with dropping down and over. True that heat rises, but air has mass, and can be pumped down more easily than up. Efficiency will not be affected.

    Just exactly how you terminate needs to be worked out. You don't want moist air backfeeding into the basement through that window, or collecting in a poorly ventilated space.
    A few errors in physical intuition model here...

    *Heat doesn't rise, it moves from hot to cold.

    *Less-dense fluids rise as denser fluids fall due to gravity. Hot exhaust gas has lower density than cold exhaust gas (or air), and will rise as the denser gas displaces it due to gravitational forces. (The cloud of less dense gas "floats" in the denser gas, rising.)

    *It takes more energy, not less, to force a lower density gas downward, counter to the gravitational forces on the denser cool gases that it is displacing. (It's "easier" to pump it up, working with gravity.)

    Thought experiment: Take a helium balloon at head height, push it to the floor, what happens? You've forced an equal volume of heavier gas (the air) upward against the force of gravity- that takes energy.

    In the dryer vent gas case it's not a huge force if the drop is small, say 3-5', but at 20' you may encounter measurably lower flow (and not just due to duct friction.)

    Can't help on the code issue though- no idea.

  13. #28
    Homeowner Thatguy's Avatar
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    http://www.oddcast.com/demos/tts/tts...le.php?clients

    J'espère que vous apprécierez votre séjour ici

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