Evaluation of grains after storage in storage unit with use of movement
DOI:
https://doi.org/10.31548/machenergy2019.02.057Keywords:
storage, technology, grain, granary, quality indicators, model, gluten, humidity.Abstract
The analysis made it possible to develop a schematic diagram of the granary. This design avoids significant losses of grain, maintain its quality, and also reduce storage costs. The flow of air passing through the grain mass exerts a versatile technological impact on the grain. Grain products are located at a certain distance from the floor, which significantly reduces the possibility of moisture accumulation by the lower layers of grain mass. It is recommended that the lower support surface of the pallet be made of metal to improve the storage conditions of the grain and the lateral ones to be made of metal.
The developed storage system involves the use of a convective flow of the coolant in two directions: centralized - for the permanent removal of moisture from the surface of the bulk production and creation of the necessary microclimate conditions and local – for the movement and continuous updating of layers of raw materials during removal of the moisture to the surface. This scheme of the active-ventilation granary with a convective coolant flow makes it possible to preserve the basic properties of products with minimal losses over the long term. The local cooling method is achieved by means of special impulse pneumodynamic bubblers, which are placed on both sides of the pallet with the products placed in bulk opposite each other. As a result of the interaction of oncoming pneumodynamic waves and their superposition, standing waves are formed, which transfer kinetic energy both in the longitudinal and the flows, which in turn move the grain mass. Under such conditions, the storage of grain mass virtually eliminates caking and activation of unwanted microbiological processes. This system does not involve the use of sufficient metal-intensive and energy-consuming mechanical means of moving the grain. Application of this method allows to quickly reduce the initial temperature of the batch of grain, and thus prevents losses resulting from the storage process.
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