"Protect from freezing" dry van experiences.

Discussion in 'Ask An Owner Operator' started by TallJoe, Feb 17, 2019.

  1. rollin coal

    rollin coal Road Train Member

    Mar 29, 2008
    It was probably already mentioned in this thread but all it really means is to leave your truck idling. It causes the liquid in the containers to agitate and they will not freeze.
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  3. feldsforever

    feldsforever Road Train Member

    Nov 22, 2019
    Sorry to show my foolish Ness. But from what I'm getting from these messages. Are just because its freeseing out the trailer. Does not mean its freeseing in side? Am I right?
    I am familiar with heated trailers. So my question is based soley on dry box with no hvac unit.
  4. TallJoe

    TallJoe Road Train Member

    Apr 12, 2016
    I did not know that such things as heated trailers existed. But they do! I've seen these units as on the pic before but I thought they were small refrigeration units.

    I am thinking, unless you are beer account dedicated, I'd rather get a reefer.
    Anyway, they should state clearly, "protect from freezing: heating unit needed."

    PE_T, Midwest Trucker and feldsforever Thank this.
  5. terryt

    terryt Heavy Load Member

    Apr 27, 2009
    It been over ten years ago we got rid of our heated trailers and propane heater only use blankets that wrap the pallets or put them on top the whole load every body (mega's) use them.
    PE_T Thanks this.
  6. volvo244t

    volvo244t Road Train Member

    Jun 24, 2010
    Bettendorf, IA
    Idle the truck. The vibration will keep the liquid moving just enough to prevent freeing.
  7. PE_T

    PE_T Road Train Member

    I checked my trailer interior temperature sensor in the morning. It was 49 while the temp outside was 1. My temperature recorder keeps the history for the last 24 hrs. The temperature did not go below 49 even though while driving temps were around -5 for several hours. The interior temp right now is 55. The history shows it went up to 56 today.
  8. Buckeye 60

    Buckeye 60 Road Train Member

    Apr 19, 2018
    any truck will send out fibration when running even if you dont feel it and does help product from freezing up to a point but even niagra falls freezes if it gets cold enough for long enough ..... when i worked for overland expres in the 80s they dropped a trailer full of ragu spaghetti sauce in sub zero temperatures and it frooze enough to crack a few and get the load kicked ...... picked a trailer up a a railyard a few years ago full of bottled water on a reefer out of fuel and was frooze rock solid but they excepted the load ....... cambells soup used to have not sure if its still done but they had,a formula that used the forcasted temperatures and how many hours load was on the trailer to determine whether to use a reefer or dry van
    TallJoe Thanks this.
  9. nredfor88

    nredfor88 Road Train Member

    Sep 26, 2019
    For what it’s worth, I recently hauled beer over three nights with temperatures down to the 20 mark in a refer.

    the refer was set to 50 degrees, stop start. It would rarely come on, and when it did it was to cool the box down to 50, as the temperature would rise in there.

    The point is that all that liquid mass in there seemed to slow any temperature changes. I figure the same affect would take place in a dry van to some degree.
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  10. TallJoe

    TallJoe Road Train Member

    Apr 12, 2016
    I guess with water, when packed in the plastic bottles, there is not such a big deal if it half freezes, the bottles won't necessarily pop, even if solid rock frozen. The beer or glass beverages are unforgiving. I would not haul beer when it is below 20.
    PE_T Thanks this.
  11. AKDoug

    AKDoug Medium Load Member

    Mar 21, 2018
    I haul beer. It's my primary contract, but it's a short 120 mile haul. Both of my trailers are insulated ex-reefer units with the reefer removed. We had one panic event at -40F that a truck broke and nobody could get moving to rescue it. 8 hours later we hooked a truck to it and got it to the distributor. Even though that beer started at 38F, my temp gun said it was still at 37F when I delivered it. That thermal mass is incredible at keeping things thawed for long time periods. I would imagine a load of tobasco in cardboard boxes would be safe for days even at temps of 10F.
    TallJoe and PE_T Thank this.
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