The impact of weather conditions on microclimate in storage facilities
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Kuupäev
2018
Kättesaadav alates
Autorid
Bradna, J.
Šimon, J.
Hájek, D.
Vejchar, D.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The key to maintaining good qualitative parameters of stored grain on farms is to
achieve and maintain suitable storage temperatures relative
to the outside temperature. In the
framework of this research, the main focus was on typical representatives of grain storage
facilities used in the Czech agriculture. In the post
-
harvest period after the crops were stored in
the chosen storage facilities,
the temperature of the material was monitored at 15
-
minute intervals
using an external temperature probe as well as the temperature and dew point of the outdoor air.
A simple linear regression model was used for data analysis. The correlated temperature
d
ependence of the stored grain varies considerably in the monitored storage facilities. The storage
halls were characterized by a low dependence (r
=
0.2208) of the temperature of the material on
the outside air temperature in the first 4 months following t
he harvest when the grains were being
stabilized by active aeration. In addition to the grain and the air temperature, the second focus
was monitoring the dew point, i.e. assessing the risk of water vapour condensation on the surface
in the upper layer of
the stored grain, which is very undesirable for maintaining the quality of the
stored grain. The results show that the monitored storage hall can be characterized by the ability
to maintain the required climate due to outdoor climatic conditions. In genera
l, this ability mainly
depends on the type and design of the storage facility, the aeration system and also the storage
capacity. Mainly during spring the dew point and water vapour condensation can often happen
within the grain, therefore the need to focu
s on appropriate measures such as reduced aeration or
increased grain mixing, and thus avoiding the formation of critical spots.
Kirjeldus
Article
Märksõnad
grain storage, temperature variation, aeration, postharvest treatment, articles