In the design of grain storage structures, aeration of stored grain is primarily conducted to:
Options:
(A) Cool the grain bulk and equalize temperatures to eliminate moisture migration
(B) Dry high moisture grain by $10\%$ in a few hours
(C) Increase grain temperature to accelerate germination
(D) Sterilize grain against fungal spores
Answer Key:
A
Step-by-Step Solution & Explanation
Aeration uses low airflow rates ($0.05 - 0.2\text{ m}^3\text{/(min}\cdot\text{tonne)}$) to cool the grain bulk uniformly and eliminate internal thermal convection currents, preventing moisture migration and condensation in the top grain layers.