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Thread: Stupid walk in cooler -- equip. Sizing help.

  1. #21
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    Spray foam.

  2. #22
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    Bricks were used in an old house we demo'ed for insulation.

    The boss said they did have an R value. Not much of one I'm sure.

  3. #23
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    a 4" brick has an r-value of about .8
    Nest is POO!!

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  5. #24
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    R600a is offline Professional Member*/Membership Committee
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    Quote Originally Posted by HVAC_Marc View Post
    a 4" brick has an r-value of about .8
    Slightly better than an open window.
    "Is this before or after you fired the parts cannon at it?" - senior tech
    I'm tired of these mediocre "semi flammable" refrigerants. If we're going to do it let's do it right.
    Unless we change direction we are likely to end up where we are going.
    "It's not new, it's better than new!" Maru.

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  7. #25
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    I guess its a good thing the outside wall is double brick then!! LOL!!

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  9. #26
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    11 defrosts a day?!!?!? Did you leave any time for refrigeration?

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  11. #27
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    Quote Originally Posted by Out in the cold View Post
    11 defrosts a day?!!?!? Did you leave any time for refrigeration?
    I usually do 12 a day for 15 minutes (Grasslin)for extra cold units or 12/14 min defrost for Paragon Clock. The defrost time falls into the other part (6 hrs) of off time for an "18 hrs refrigeration day". I have never had a "warm product" complaint due to defrost time.

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  13. #28
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    Yeah, it's actually working out well, since the "box" isn't sealed.

    I appreciated the advice TMT, I have a feeling we would have had problems, not having that many defrost cycles.

  14. #29
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    Why not just use an off cycle defrost? If its making temps just make sure there is enough differential before it cycles back on again.

  15. #30
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    I'm not talking 38-40*F box temps. I am referring to 33-35*F box w/ a lot of running time so there is a frost buildup.

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