If using an aeration fan designed to provide
a relatively small airflow rate on the order of 0.1
to 0.2 cfm/bu, begin cooling wheat when the
average air temperature drops by about 10 F. Run
the fan continuously until the exhaust air temperature
drops to the new level. When using a drying
fan that can provide an airflow rate of 1
⁄2 to 1 cfm