volume of air in cubic meters delivered to the mass of grains per second
burner efficiency
ratio of the heat supplied by the burner, to the heat released by the fuel
combustion efficiency
ratio of the heat released by the fuel, to the theoretical heat available from the fuel
damaged grains
grains which are heat damaged, weather damaged, ground damaged, moldy, diseased, insect bored, sprouted or distinctly damaged by insects, water, fungi and/or any other means as seen by the naked eye
drying air temperature
average temperature of the air to be used for drying the grain, measured at a number of points as close as practicable to its entry to the grain bed
drying rate
amount of water removed per unit of time, expressed in kilogram per hour
dryingsystemefficiency
ratio of the total heat utilized for drying, to the heat available in the fuel expressed in percent
foreign matter
all matters other than rice/corn grains such as sand, gravel, dirt, pebbles, stones, lumps of earth, clay, mud, chaff, straw, weed seeds and other crop seeds
fuel consumption
total amount of fuel consumed divided by the total drying time
grain holding capacity
weight of grain that could be contained in the dryer
heat utilization
total amount of heat utilized to vaporize moisture in the material, expressed in kJ/kg of H₂O
immature grains
kernels, whole or broken, which are light green and chalky with soft texture
moisture reduction rate
average percentage point moisture content removed from the grain per drying time
non-renewable energy source
source of energy which includes petroleum-based fuels such as kerosene, gasoline, diesel oil and bunker fuel oil
purity
percentage of grains free of foreign matter
renewable energy source
source of energy that includes non-petroleum based fuels such as biomass and solar energy
scattered grains
ratio of the weight of grains that fell out from the machine during the drying operation, to the weight of the total grain input to the dryer, expressed in percent
static pressure
pressure in the plenum chamber to maintain uniform distribution of air flow through the grain mass, expressed in Pascal
suction system
air movement through the drying chamber wherein air is moved through the product at a pressure lower that the atmospheric condition, expressed in Pascal
tempering
temporarily holding the grain between the drying passes, allowing the moisture content in the center of the grain and that on the surface of the grain to equalize