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. Mechanical grain dryer wherein the grain in fixed amount is held in the drying chamber in batches until the grain reaches the desired moisture content.
BATCH TYPE
Batch type dryer wherein a fixed amount of grain is held stationary in a horizontal grain holding bin.
FLAT BED TYPE
batch type dryer equipped to circulate and/or mixed fixed volume of grain during the drying
operation
recirculating type
batch type dryer wherein a fixed volume of grain is held stationary in a vertical grain holding
bin
vertical bin type
dryer in which the material being dried moves through the drying chamber in a substantially
continuous stream and is discharged without being recirculated
continuous flow dryer
continuous flow dryer wherein the product being dried moves in the same direction as drying
air
concurrent flow type
continuous flow dryer wherein the grain being dried move in one direction and the drying air
moves in the opposite direction
counter-flow type
continuous flow dryer wherein the flow of air is transverse to the direction of flow of the
grain being dried
cross-flow type
continuous flow dryer wherein the drying bin is similar to columnar drying bin except that it
includes louvers causing mixing to occur as the grain flows through the system
mixing type
continuous flow dryer wherein the grains in the drying bin flows through the column in a
straight path
non-mixing type
grains which show signs of fissures or fractures or splinters
cracked grain
dryer in which the products of combustion come into direct contact with the product being
dried
dryer, direct-fired
dryer in which the products of combustion do not come in contact with the products being
dried
dryer, indirect-fired
ratio of the total heat utilized to vaporize moisture in the material, to the amount of heat
added to the drying air expressed in percent
drying efficiency / heat utilization efficiency
device used to collect dust ( i.e. consist of aspiration fan, cyclone, etc.)
dust collecting system
air moving device that is used to force heated air through the mass of grains at the desired air
flow rate and pressure
fan
device for removing excess moisture from the grain, generally by forced or natural
convection with or without addition of heat
grain dryer
grain or a fraction of grain with its length equal to or greater than eight-tenth (8/10) of the
average length of the whole grain
head rice
device used to remove grain moisture by forcing heated air through the grain mass until the
desired moisture content is attained
heated-air mechanical grain dryer
product of combustion efficiency and burner/furnace efficiency
heating system efficiency
difference between the maximum and the minimum grain moisture content randomly sampled
after drying
moisture gradient
mechanical grain dryer wherein grain is passed intermittently in cycles or stages through a
drying chamber either by mechanical means or by gravity with subsequent cooling and
tempering until the grain reaches the desired moisture content
multi-pass dryer
chamber wherein air pressure is developed for uniform distribution of the heated air through
the grain mass
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
What is the maximum moisture gradient for rice in a recirculation type of grain dryer?
2.%
The noise emitted by the heated-air mechanical grain dryer shall not exceed ….
92 dB.
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 AIR TEMPERATURE
Volume of air in cubic meters delivered to the mass of grains per second.
AIRFLOW RATE
Kernels, whole or broken, which are light green and chalky with soft texture.
IMMATURE GRAINS
Pressure in the plenum chamber to maintain uniform distribution of air flow through the grain mass, expressed in Pascal.
STATIC PRESSURE
Milling test of the samples obtained during drying test shall be conducted at least —– hours after the drying test while air-dried samples shall be milled when its moisture content reaches —–
48 hrs and 14 %
The grain to be used shall be homogeneous and the moisture content should be at least—– for rice and corn.
22%
Amount of moisture in the grain expressed as percentage of the total weight of the sample, wet basis.
MOISTURE CONTENT
Formula in getting the percentage of wet basis for moisture content of the rice grain.
(MO-MI)/MO X 100=MCWB
Total amount of fuel consumed divided by the total drying time.
FUEL CONSUMPTION
Type of shelling unit consisting of a cylinder with shelling elements such as knife bar or pegtooth.
CYLINDER TYPE
Machine used to detach, separate and clean the corn kernels from the cobs.
CORN SHELLER
Difference between the percent cracked sample taken before and after the shelling operation.
¬NET CRACKED KERNEL .
Electric motor, a gasoline or diesel fed engine used to run the sheller.
PRIMEMOVER
For uniform result of output due to variation in kernel moisture content and purity, the output capacity shall be corrected at —–purity and _____moisture content.
100% and 20%
Ratio of the weight of clean corn kernels, to the total weight of unclean corn kernels sample, expressed in percent.
PURITY
