Dehusked Corn Dryer PAES 246-247:2010 Flashcards
unshelled fruit of the corn plant where the husk has been removed mechanically or manually
dehusked corn, ear corn, corn-on-cob
refers to the leafy outer/protective covering of an ear of corn as it grows on the plant
husk
corn dryer device for removing excess moisture from the ear of corn without husk, generally by forced or natural convection with or without addition of heat
dehusked
air moving device that is used to force heated air through the mass of materials to be dried at the desired air flow rate and pressure
fan, blower
difference between the maximum and the minimum moisture content randomly sampled after drying
moisture gradient
chamber wherein air pressure is developed for uniform distribution of the heated air through the material to be dried
plenum
any device that is used to avoid human accident and/or damage to the parts and components of the dryer during the operation and automatically shuts-off the operation of the dryer in case of malfunction
safety device
Mechanical dryer wherein the corn in fixed volume is held in the drying chamber in batches until it reaches the desired moisture conten
Batch type
Dryer in which the products of combustion come into direct contact with the product being dried
Direct
Dryer in which the products of combustion do not come in contact with the products being dried. This type enables the use of heat exchanger.
Indirect
Source of energy which includes petroleum-based fuels such as kerosene, gasoline, Diesel oil and bunker fuel oil.
Conventional
Source of energy that includes non-petroleum fuels such as biomass fuel.
Non-conventional
Flooring of the dryer shall be rigid of sufficient thickness to be able to support the maximum weight of dehusked corns to be dried. It shall have ____perforations.
5 mm
The drying bed or floor shall have angle of inclination depending on the angle of repose of dehusked corn for ____ ease of discharging
(19°-22°)
Airflow rate of drying air for dehusked corn dryer shall be _____ of dehusked corn.
15 to 40 m3/min per cubic meter
The moisture content reduction rate shall be at least ____
0.25% per hour
The noise emitted by the blower of the dryer shall not exceed _____.
92 dB(A).
volume of air in cubic meters delivered to the mass of dehusked corn per minute
airflow rate
corn kernels which are heat damaged, weather damaged, sprouted or distinctly damaged by insects, water, fungi and/or any other means
damaged kernels
mean temperature of the air to be used for drying the dehusked corn, measured at a number of points practicably as close to its entry to the drying bed
drying air temperature
maximum capacity that the dehusked corn dryer can dry to meet the desired moisture content
drying capacity
total amount of fuel consumed divided by the total drying time, expressed in kg/h
fuel consumption
product of combustion efficiency and burner/furnace efficiency; the ratio of heat supplied to the dryer and the heat available from the fuel used, expressed in percent
heating system efficiency
weight of dehusked corn required to fill the dryer at the input moisture content
holding capacity load capacity
rate ratio of the average percent moisture content removed from the dehusked corn to drying time, expressed in percent per hour
moisture reduction
pressure build-up in the plenum chamber to maintain uniform dustribution of air flow through the dehusked corn mass, expressed in mmH2O
static pressure
