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  1. #1
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    Jun 2018
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    Airlock infiltration

    Hi

    First post here.

    How much better is an airlock to avoid infiltration than just regular doors?

    Where can I look in terms of codes (Like ASHRAE) to find calculations that will support the answer.

  2. #2
    Join Date
    Dec 2004
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    Do you mean like a vestibule entry with 2 sets of doors before coming into a building? Or an actual air lock like on an submarine?

    Sent from my SM-G930V using Tapatalk

  3. #3
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    Nov 2011
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    Quote Originally Posted by heatingman View Post
    Do you mean like a vestibule entry with 2 sets of doors before coming into a building? Or an actual air lock like on an submarine?

    Sent from my SM-G930V using Tapatalk
    the taller the building is, the longer you have to remain in the airlock to avoid the bends!! LOL!!

  4. #4
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    Aug 2002
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    Quote Originally Posted by KesTheHammer View Post
    Hi

    First post here.

    How much better is an airlock to avoid infiltration than just regular doors?

    Where can I look in terms of codes (Like ASHRAE) to find calculations that will support the answer.
    An air lock is 100% sealed

  5. Likes HVAC_Marc liked this post
  6. #5
    Join Date
    Mar 2013
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    Billington Heights, NY
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    ^^^ what he said. An air lock is a separate compartment completely sealed from another space. You can compress and decompress the volume.

    I would look at episodes of Star Trek Deep Space 9 and Enterprise for views on how air locks work.

  7. #6
    Join Date
    May 2018
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    Central Florida
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    Lol, talk about waiting in line for the elevator!

  8. #7
    Join Date
    Jun 2018
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    Thread Starter
    Vestibule is fine. Somehow the architects named the space Airlock. Still, any code references?

  9. #8
    Join Date
    Feb 2016
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    Louisburg Kansas
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    Don't put a return grille in the vestibule and provide cooling air at 0.8 to 1.0 CFM per square foot and it will work fine. If the vestibule is well sealed and you get air noise through the doors reduce the air supply accordingly.

  10. #9
    Join Date
    May 2018
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    Phoenix Az.
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    What is this vestibule/air lock in, a clean room?

  11. #10
    Join Date
    Aug 2016
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    San Diego
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    Quote Originally Posted by DewMac View Post
    What is this vestibule/air lock in, a clean room?
    It's called an ante room generally. It's generally positively pressurized to the outside. Then the connected rooms are positive to the ante room. At least that's how IV compounding rooms are set up.

  12. #11
    Join Date
    Jun 2018
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    Thread Starter
    Quote Originally Posted by DewMac View Post
    What is this vestibule/air lock in, a clean room?
    It is a mall, and it I suppose it could also be called a "wind-lobby". The question remains, is there any code/research that shows that this actually works, and how much?

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