PAES 201:2000

Question 1

a mechanical grain dryer wherein the grain in fixed volume is held in the drying chamber in batches until the grain reaches the desired moisture content

Answer 1

Batch Type

Question 2

batch type dryer wherein a fixed amount of grain is held stationary in a horizontal grain holding bin

Answer 2

Flat bed type

Question 3

batch type dryer equipped to circulate and/or mixed fixed amount of grain during the drying operation

Answer 3

Recirculating type

Question 4

columnar type
batch type dryer wherein a fixed volume of grain is held stationary in a vertical grain holding bin

Answer 4

Vertical bin type

Question 5

dryer in which the material being dried moves through the drying chamber in a substantially continuous stream and is discharged without being recirculated

Answer 5

Continuous flow dryer

Question 6

parallel flow type
continuous flow dryer wherein the product being dried moves in the same direction as drying air

Answer 6

concurrent flow type

Question 7

continuous flow dryer wherein the grain being dried move in one direction and the drying air moves in the opposite direction

Answer 7

counter-flow type

Question 8

continuous flow dryer wherein the flow of air is transverse to the direction of flow of the grain being dried

Answer 8

cross-flow type

Question 9

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

Answer 9

mixing type

Question 10

continuous flow dryer wherein the grains in the drying bin flows through the column in a straight path

Answer 10

non-mixing type

Question 11

It consists of two parallel screens or columns of louvers. The space between the two columns is the plenum chamber where heated air is introduced and forced through the grain

Answer 11

non-mixing type

Question 12

grains which show signs of fissures or fractures or splinters

Answer 12

cracked grains

Question 13

dryer in which the products of combustion come into direct contact with the product being dried

Answer 13

dryer, direct-fired

Question 14

dryer in which the products of combustion do not come in contact with the products being dried

Answer 14

dryer, indirect-fired

Question 15

heat utilization efficiency
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

Answer 15

drying efficiency

Question 16

device used to collect dust ( i.e. consist of aspiration fan, cyclone, etc.)

Answer 16

dust collecting system

Question 17

blower
air moving device that is used to force heated air through the mass of grains at the desired air flow rate and pressure

Answer 17

fan

Question 18

device for removing excess moisture from the grain, generally by forced or natural convection with or without addition of heat

Answer 18

grain dryer

Question 19

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

Answer 19

head rice

Question 20

device used to remove grain moisture by forcing heated air through the grain mass until the desired moisture content is attained

Answer 20

heated-air mechanical grain dryer

Question 21

product of combustion efficiency and burner/furnace efficiency

Answer 21

heating system efficiency

Question 22

difference between the maximum and the minimum grain moisture content randomly sampled after drying

Answer 22

moisture gradient

Question 23

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

Answer 23

multi-pass dryer

Question 24

chamber wherein air pressure is developed for uniform distribution of the heated air through the grain mass

Answer 24

plenum

Question 25

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

Answer 25

safety device