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Moisture and Weights

  • 29-08-2012 7:22am
    #1
    Rebel Man
    Registered Users, Registered Users 2 Posts: 27 ✭


    Grow mainly Spring Barley myself. I know when you cut it at higher moisture it weighs more but can anybody put a figure on this for me. For example a load of grain weighing 12 tonne at 20% moisture, how must would it weight at 25%? Remember seeing a chart on this in Farmers Journal years ago but can't find it now.


Comments

  • #2
    Farmer Pudsey
    Registered Users, Registered Users 2 Posts: 6,326 ✭✭✭Farmer Pudsey


    First you have to calculate the amount of dry matter. In reality you want to know if you deliver 12 tonne at 25% moistore how much will it weight at 20% moisture

    so [EMAIL="12@25%"]12@25%[/EMAIL] tonneX 0.75= 9 tonne of Dry matter

    to convert this to 20% moisture there will be 80 % Dry matter

    so 9 tonne/0.8 = 11.25 tonnes @ 20% moistue

    If you want the reverse it is

    12 [EMAIL="tonne@20%"]tonne@20%[/EMAIL] X 0.8 = 9.6 tonnes dry matter
    9.6 tonnes/0.75= 12.8 tonnes @ 25% moisture

    Always knew the Cork Buoy's were no good at the sums


  • #3
    DMAXMAN
    Registered Users, Registered Users 2 Posts: 328 ✭✭DMAXMAN


    Rebel Man wrote: »
    Grow mainly Spring Barley myself. I know when you cut it at higher moisture it weighs more but can anybody put a figure on this for me. For example a load of grain weighing 12 tonne at 20% moisture, how must would it weight at 25%? Remember seeing a chart on this in Farmers Journal years ago but can't find it now.
    as a genera rule of thumb 1% moisture gives a 1.2% weight difference. it pays better to deliver grain at higher moisture on a year like this i.e.high price year . i think the point where it changes is about 150/ton.


  • #4
    nilhg
    Registered Users, Registered Users 2 Posts: 5,185 ✭✭✭nilhg


    DMAXMAN wrote: »
    as a genera rule of thumb 1% moisture gives a 1.2% weight difference. it pays better to deliver grain at higher moisture on a year like this i.e.high price year . i think the point where it changes is about 150/ton.

    I think that rule of thumb applies more to drying where you tend to have "invisible losses" than to pure weight gain or loss. Where the sweet spot for delivering green grain lies i don't know but I'd suggest that with the price of fuel for drying that any merchant worth his salt will have the penalties set to discourage wet grain arriving, it's a nightmare in any drying system.


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