AREA 3 DEFINITION OF TERMS

Moisture content wet basis

ratio of weight of water of the sample to total fresh weight of the sample

Moisture content dry basis

ratio of weight of water to the mass of water plus dry matter(total dry matter)

Equilibrium moisture content

moisture content at which grain neither gains nor loses moisture

Dry-bulb temperature (DBT)

Actual air temperature

Wet-bulb temperature (WBT)

Temperature measured using a wetted thermometer

Falling rate period

Internal moisture diffusion to the kernel surface limits the drying rate

Drying

removes moisture down to an equilibrium level

dehydration

removes it down to near zero level

vapor pressure of the grain is HIGHER than it’s surrounding

According to grain drying theory, under what condition does the moisture move from the grain to the drying air