A tempering silo is used to cool the grain after drying and before being transferred to a prolonged storage. The tempering silo allows the dryer to be used more economically because the drying process is much more efficient with high moisture content than in the final stages of the drying process.

The tempering silo or cooling bin is a temporary storage silo that is placed after the dryer and can have different uses, such as:

  • To store grain temporarily during the first stage of the project, before being transferred to the definitive storage.
  • To serve as temporary storage or lung of the dryer when the humidity of the grain requires another drying cycle.
  • It is used in the Dryeration method, which increases the performance and efficiency of the dryer.

The Dryeration method is a process developed at Purdue University in the late 1960s, that modifies the high-speed drying process by transferring the hot corn to a cooling bin, eliminating in-dryer cooling. The hot corn is allowed to “steep” or “temper” in the cooling bin at least 4 to 6 hours before being cooled slowly. After cooling, the corn is transferred to storage. Dryeration provides three advantages over high-speed drying with in-dryer cooling: increased dryer capacity, reduced fuel consumption, and better corn quality (less stress cracking, less fine material, higher test weight).

Silo Enfriamiento

Sources: FAO, University of Minnesota

Need more tips or advice? Please visit our FAQ’s section


Differences, Advantages & Disadvantages

  1. Advantages of using steel silos for grain storage instead of storing the grain in warehouses
  2. Advantages of using a Steel Silo over a Bag Silo for Grain Storage
  3. Advantages of a Steel Silo vs. a Concrete Silo for grain storage
  4. Difference and benefits of a galvanised steel silo and a carbon steel silo with food paint

Safety tips for grain handling and storage

  1. Requirements to store grains safely
  2. The importance of temperature control inside the silo
  3. How to minimise spoilage during the storage of soybean
  4. Indicators to detect problems with the soybeans stored in a silo: Heating, change in color, musty odour, lumping and caking
  5. What are the necessary control plans for storing corn in a metal silo?
  6. How to store grain to reduce post-harvest losses and protect its quality

General Guidelines

  1. Guidelines for choosing and designing a silo facility
  2. What is a Tempering Silo and what is it used for
  3. What kind of filters are used in grain storage facilities and why
  4. Metal structure of towers in grain storage facilities

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