World Grain - November 2020 - 62

GRAIN OPERATIONS

complete the aeration cooling goal. The
user can update the forecast each day
and adjust operational strategy according to the newest six-day forecast.
The app allows the user to click on the
days that do not yield 24 hours of fan
run time. It shows certain hours during
the middle of the day when ambient temperatures are predicted to be high, and so
the user could shut off the fan to avoid
blowing warm air back into the bottom
grain layers. A few hours later, the user
could tell their smartphone, "Alexa, turn
on the fan for Silo 1."
If a user wanted to take advantage of a
lower thermostat setting, a 30% fan run
time percentage would utilize the average between the minimum and average
temperatures entered, and a 1% fan runtime would utilize the minimum temperature as the set point. These adjustments
in settings can be utilized by stored
grain managers for a second and third

aeration cooling cycle, which is typically needed to prepare grain for winter
storage. During the first cooling cycle
during the fall harvest period, the 50%
fan runtime setting will reduce grain
temperature aggressively. After the initial cool down is achieved, the user can
reduce the fan runtime to 25% to 30% to
initiate the second aeration cycle. This
usually occurs in the late fall/early winter during which the average aeration air
conditions are substantially lower and
achieved less aggressively. An eventual third cycle would be initiated with
15% to 20% fan runtime to restrict fan
operating hours during of the cold winter weather.
CONCLUSION
Key to preserving quality of stored grain
is understanding the local weather conditions and its relationship to the temperature and moisture content of the

corn, soybeans or other grains to be
stored and maintained. Specifically, ambient temperature and relative humidity determine the cooling potential of
ambient air, estimated based on the wet
bulb temperature, and whether ambient
air will increase or decrease moisture
content of the grain, estimated based on
the equilibrium moisture content. For
the first time, the newly available Grain
Aeration and Storage App combines
these engineering equations with local
weather forecasting and puts this intelligence at the user's fingertips for any
grain type and global location - and
best of all, it is free of charge.
Dirk Maier is a post-harvest engineer with
the Iowa Grain Quality Initiative at
Iowa State University. He may be reached
at dmaier@iastate.edu.
We want to hear from you - Send comments and
inquiries to worldgrain@sosland.com. For reprints of
WG articles, e-mail reprints@sosland.com.

EXPERIENCE
THE GEAPS
ADVANTAGE.
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IN THE GRAIN INDUSTRY!

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World Grain - November 2020

Table of Contents for the Digital Edition of World Grain - November 2020

World Grain - November 2020 - 1
World Grain - November 2020 - 1
World Grain - November 2020 - 2
World Grain - November 2020 - 3
World Grain - November 2020 - 4
World Grain - November 2020 - 5
World Grain - November 2020 - 6
World Grain - November 2020 - 7
World Grain - November 2020 - 8
World Grain - November 2020 - 9
World Grain - November 2020 - 10
World Grain - November 2020 - 11
World Grain - November 2020 - 12
World Grain - November 2020 - 13
World Grain - November 2020 - 14
World Grain - November 2020 - 15
World Grain - November 2020 - 16
World Grain - November 2020 - 17
World Grain - November 2020 - 18
World Grain - November 2020 - 19
World Grain - November 2020 - 20
World Grain - November 2020 - 21
World Grain - November 2020 - 22
World Grain - November 2020 - 23
World Grain - November 2020 - 24
World Grain - November 2020 - 25
World Grain - November 2020 - 26
World Grain - November 2020 - 27
World Grain - November 2020 - 28
World Grain - November 2020 - 29
World Grain - November 2020 - 30
World Grain - November 2020 - 31
World Grain - November 2020 - 32
World Grain - November 2020 - 33
World Grain - November 2020 - 34
World Grain - November 2020 - 35
World Grain - November 2020 - 36
World Grain - November 2020 - 37
World Grain - November 2020 - 38
World Grain - November 2020 - 39
World Grain - November 2020 - 40
World Grain - November 2020 - 41
World Grain - November 2020 - 42
World Grain - November 2020 - 43
World Grain - November 2020 - 44
World Grain - November 2020 - 45
World Grain - November 2020 - 46
World Grain - November 2020 - 47
World Grain - November 2020 - 48
World Grain - November 2020 - 49
World Grain - November 2020 - 50
World Grain - November 2020 - 51
World Grain - November 2020 - 52
World Grain - November 2020 - 53
World Grain - November 2020 - 54
World Grain - November 2020 - 55
World Grain - November 2020 - 56
World Grain - November 2020 - 57
World Grain - November 2020 - 58
World Grain - November 2020 - 59
World Grain - November 2020 - 60
World Grain - November 2020 - 61
World Grain - November 2020 - 62
World Grain - November 2020 - 63
World Grain - November 2020 - 64
World Grain - November 2020 - 65
World Grain - November 2020 - 66
World Grain - November 2020 - 67
World Grain - November 2020 - 68
World Grain - November 2020 - 69
World Grain - November 2020 - 70
World Grain - November 2020 - 71
World Grain - November 2020 - 72
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World Grain - November 2020 - 75
World Grain - November 2020 - 76
World Grain - November 2020 - 77
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World Grain - November 2020 - 79
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World Grain - November 2020 - 81
World Grain - November 2020 - 82
World Grain - November 2020 - 83
World Grain - November 2020 - 84
http://digital.world-grain.com/sosland/wg/2020_11_01
http://digital.world-grain.com/sosland/wg/2020_10_01
http://digital.world-grain.com/sosland/wg/2020_09_01
http://digital.world-grain.com/sosland/wg/2020_08_01
http://digital.world-grain.com/sosland/wg/2020_07_01
http://digital.world-grain.com/sosland/wg/2020_06_01
http://digital.world-grain.com/sosland/wg/2020_05_01
http://digital.world-grain.com/sosland/wg/2020_04_01
http://digital.world-grain.com/sosland/wg/2020_03_01
http://digital.world-grain.com/sosland/wg/2020_02_01
http://digital.world-grain.com/sosland/wg/2020_01_01
http://digital.world-grain.com/sosland/wg/2019_12_01
http://digital.world-grain.com/sosland/wg/2019_11_01
http://digital.world-grain.com/sosland/wg/2019_10_01
http://digital.world-grain.com/sosland/wg/2019_09_01
http://digital.world-grain.com/sosland/wg/2019_08_01
http://digital.world-grain.com/sosland/wg/2019_07_01
http://digital.world-grain.com/sosland/wg/2019_06_01
http://digital.world-grain.com/sosland/wg/2019_05_01
http://digital.world-grain.com/sosland/wg/2019_04_01
http://digital.world-grain.com/sosland/wg/2019_03_01
http://digital.world-grain.com/sosland/wg/2019_02_01
http://digital.world-grain.com/sosland/wg/2019_01_01
http://digital.world-grain.com/sosland/wg/2018_12_01
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https://www.nxtbook.com/sosland/wg/2018_02_01
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https://www.nxtbook.com/sosland/wg/2017_06_01
https://www.nxtbook.com/sosland/wg/2017_05_01
https://www.nxtbook.com/sosland/wg/2017_04_01
https://www.nxtbook.com/sosland/wg/2017_03_01
https://www.nxtbook.com/sosland/wg/2017_02_01
https://www.nxtbook.com/sosland/wg/2017_01_01
https://www.nxtbook.com/sosland/wg/2016_12_01
https://www.nxtbook.com/sosland/wg/2016_11_01
https://www.nxtbook.com/sosland/wg/2016_10_01
https://www.nxtbook.com/sosland/wg/2016_09_01
https://www.nxtbook.com/sosland/wg/2016_08_01
https://www.nxtbook.com/sosland/wg/2016_07_01
https://www.nxtbook.com/sosland/wg/2016_06_01
https://www.nxtbook.com/sosland/wg/2016_05_01
https://www.nxtbook.com/sosland/wg/2016_04_01
https://www.nxtbook.com/sosland/wg/2016_03_01
https://www.nxtbook.com/sosland/wg/2016_02_01
https://www.nxtbook.com/sosland/wg/2016_01_01
https://www.nxtbook.com/sosland/wg/2015_12_01
https://www.nxtbook.com/sosland/wg/2015_11_01
https://www.nxtbook.com/sosland/wg/2015_10_01
http://digital.world-grain.com/sosland/wg/2015_09_01
http://digital.world-grain.com/sosland/wg/2015_08_01
http://digital.world-grain.com/sosland/wg/2015_07_01
http://digital.world-grain.com/sosland/wg/2015_06_01
http://digital.world-grain.com/sosland/wg/2015_05_01
https://www.nxtbook.com/sosland/wg/2015_04_01
https://www.nxtbook.com/sosland/wg/2015_03_01
https://www.nxtbook.com/sosland/wg/2015_02_01
http://digital.world-grain.com/sosland/wg/2015_01_01
https://www.nxtbook.com/sosland/wg/2014_12_01
https://www.nxtbook.com/sosland/wg/2014_11_01
https://www.nxtbook.com/sosland/wg/2014_10_01
https://www.nxtbook.com/sosland/wg/2014_09_01
https://www.nxtbook.com/sosland/wg/2014_08_01
https://www.nxtbook.com/sosland/wg/2014_07_01
https://www.nxtbook.com/sosland/wg/2014_06_01
https://www.nxtbook.com/sosland/wg/2014_05_01
https://www.nxtbook.com/sosland/wg/2014_04_01
https://www.nxtbook.com/sosland/wg/2014_03_01
https://www.nxtbook.com/sosland/wg/2014_02_01
https://www.nxtbook.com/sosland/wg/2014_01_01
https://www.nxtbook.com/sosland/wg/2013_12_01
https://www.nxtbook.com/sosland/wg/2013_11_01
https://www.nxtbook.com/sosland/wg/2013_10_01
https://www.nxtbook.com/sosland/wg/2013_09_01
https://www.nxtbook.com/sosland/wg/2013_08_01
https://www.nxtbook.com/sosland/wg/2013_07_01
https://www.nxtbook.com/sosland/wg/2013_06_01
https://www.nxtbook.com/sosland/wg/2013_05_01
https://www.nxtbook.com/sosland/wg/2013_04_01
https://www.nxtbook.com/sosland/wg/2013_03_01
https://www.nxtbook.com/sosland/wg/2013_02_01
https://www.nxtbook.com/sosland/wg/2013_01_01
https://www.nxtbook.com/sosland/wg/2012_12_01
https://www.nxtbook.com/sosland/wg/2012_11_01
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https://www.nxtbook.com/sosland/wg/2012_09_01
https://www.nxtbook.com/sosland/wg/2012_08_01
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https://www.nxtbook.com/sosland/wg/2012_06_01
https://www.nxtbook.com/sosland/wg/2012_05_01
https://www.nxtbook.com/sosland/wg/2012_04_01
https://www.nxtbook.com/sosland/wg/2012_03_01
https://www.nxtbook.com/sosland/wg/2012_02_01
https://www.nxtbook.com/sosland/wg/2012_01_01
https://www.nxtbook.com/sosland/wg/2011_12_01
https://www.nxtbook.com/sosland/wg/2011_11_01
https://www.nxtbook.com/sosland/wg/2011_10_01
https://www.nxtbook.com/sosland/wg/20111_09_01
https://www.nxtbook.com/sosland/wg/2011_08_01
https://www.nxtbook.com/sosland/wg/2011_07_01
https://www.nxtbook.com/sosland/wg/2011_06_01
https://www.nxtbook.com/sosland/wg/2011_05_01
https://www.nxtbook.com/sosland/wg/2011_04_01
https://www.nxtbook.com/sosland/wg/2011_03_01
http://digital.world-grain.com/sosland/wg/2011_02_01
http://digital.world-grain.com/sosland/wg/2011_02_01
http://digital.world-grain.com/sosland/wg/2011_01_01
http://digital.world-grain.com/sosland/wg/2010_12_01
http://digital.world-grain.com/sosland/wg/2010_11_01
http://digital.world-grain.com/sosland/wg/2010_10_01
http://digital.world-grain.com/sosland/wg/2010_09_01
http://digital.world-grain.com/sosland/wg/2010_08_01
http://digital.world-grain.com/sosland/wg/2010_07_01
http://digital.world-grain.com/sosland/wg/2010_06_01
http://digital.world-grain.com/sosland/wg/2010_05_01
http://digital.world-grain.com/sosland/wg/2010_04_01
http://digital.world-grain.com/sosland/wg/2010_03_01
http://digital.world-grain.com/sosland/wg/2010_02_01
http://digital.world-grain.com/sosland/wg/2010_01_01
http://digital.world-grain.com/sosland/wg/2009_12_01
http://digital.world-grain.com/sosland/wg/2009_11_01
http://digital.world-grain.com/sosland/wg/2009_10_01
http://digital.world-grain.com/sosland/wg/2009_09_01
http://digital.world-grain.com/sosland/wg/2009_08_01
http://digital.world-grain.com/sosland/wg/2009_07_01
http://digital.world-grain.com/sosland/wg/2009_06_01
http://digital.world-grain.com/sosland/wg/2009_05_01
http://digital.world-grain.com/sosland/wg/2009_04_01
http://digital.world-grain.com/sosland/wg/2009_03_01
http://digital.world-grain.com/sosland/wg/2009_02_01
http://digital.world-grain.com/sosland/wg/2009_01_01
http://digital.world-grain.com/sosland/wg/2008_12_01
http://digital.world-grain.com/sosland/wg/2008_11_01
http://digital.world-grain.com/sosland/wg/2008_10_01
http://digital.world-grain.com/sosland/wg/2008_09_01
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http://digital.world-grain.com/sosland/wg/2008_07_01
http://digital.world-grain.com/sosland/wg/2008_06_01
http://digital.world-grain.com/sosland/wg/2008_05_01
http://digital.world-grain.com/sosland/wg/2008_04_01
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