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  1. #14
    Join Date
    Sep 2002
    Location
    Virginia
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    Thread Starter
    And if they still want vinyl how much would you add

  2. #15
    Join Date
    Jul 2000
    Location
    Guayaquil, EC
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    Quote Originally Posted by Snapperhead View Post
    And if they still want vinyl how much would you add
    Strip curtains are rated at about 65% efficiency, so that would be the equivalent of 8.4 hrs/day with the door wide open.

    Based on the earlier estimate of 4000 Btuh for 4.8 hrs per day with an air curtain, the strip curtain would add about 7000 Btuh to the box load. 8.4/4.8 x 4000 = 7000 Btuh added to load

  3. #16
    Join Date
    Aug 2018
    Location
    Madison, WI
    Posts
    7
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    My recommendations** in order:

    1.) Get them to put on a real door. (Those beer cave doors do look cool.)

    2.) Get them to put on an air curtain (hopefully with a real door for nighttime.)

    3.) Dehumidify the store so there isn't too much moisture heading into the box

    4.) Dehumidify the box so the coil isn't overloaded with moisture.

    But above all, don't underestimate the stupidity of the owners and patrons. If you put in strip curtain or something that can be yanked aside, it will be.

    As an example, I have a -10F walk in that was in constant use. They had biparting doors and a stripcurtain but it was in use 30 minutes out of every hour for 10+ hours/day. I put a desiccant in and their frost problems disappeared. 3 weeks later, its full of frost again. Why? Because since the frost was gone, the employees thought it was OK to leave the doors open and rip off the strip curtains.


    **I work for a dehumidifier manufacturer, so take that into account when looking at my recommendations.

  4. #17
    Join Date
    Feb 2016
    Location
    SE Michigan
    Posts
    31
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    Dan what is this desiccant that you’re referring to?

  5. #18
    Join Date
    Jan 2010
    Posts
    13,644
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    Proprietary

  6. #19
    Join Date
    Aug 2018
    Location
    Madison, WI
    Posts
    7
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    Do you mean what is a desiccant? (Dehumidifier that uses a moisture absorbing material, so it can work at nearly any temperature.)

    Or what brand desiccant/model number is it? (I'm new to the forum so I don't want to break any commercialism policy here.)

    Or is this an inside joke to the forum? (Again, I'm new so I don't know the culture and inside jokes.)

  7. #20
    Join Date
    Jul 2000
    Location
    Guayaquil, EC
    Posts
    13,461
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    Quote Originally Posted by DehuDan View Post
    Do you mean what is a desiccant? (Dehumidifier that uses a moisture absorbing material, so it can work at nearly any temperature.)

    Or what brand desiccant/model number is it? (I'm new to the forum so I don't want to break any commercialism policy here.)

    Or is this an inside joke to the forum? (Again, I'm new so I don't know the culture and inside jokes.)
    You can mention brands, but just not so it's advertising. That you have to pay for.

    No inside joke about dessicants that I'm aware of. I think the question stems more from the fact that dessicant dehumidification isn't all that familiar to the residential and light commercial HVACR field, where most of our members are at.

  8. #21
    Join Date
    Aug 2018
    Location
    Madison, WI
    Posts
    7
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    OK. Thanks for the explanation, icemeister.

    I work for Quest dehumidifiers (Owned by Therma-Stor). I came from 20+ years in the industrial refrigeration/food processing world so here I'm basically an applications engineer working with the desiccant line in similar fields.

    So I spend my days helping people reduce humidity in coolers and freezers. The goofy thing is they install a unit and their problems go away. 2 months later I get a call because its bad again. Diagnosing the problem, I usually find out they ripped off the strip curtain, leave the door open more, double the amount of warm product they are moving in...basically once the problem is fixed, they now think they can add as much load as they want. So I give them the option of closing the door or buying a second unit. The sad thing is that many end up buying a second unit because they can't get their employees to improve their behavior.

    So when I saw this post about the owners wanting a beer cooler without a door, I smacked my head on the desk. If you can keep the temperature high enough to run the coil wet, that drain pan will be overflowing.

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