Heated Air Mechanical Dryer Flashcards
Heating system Efficiency of Petroleum based fuel direct-fired
90
Heating system Efficiency of Petroleum based fuel indirect-fired
75
Heating system Efficiency of biomass fuel direct-fired
65
Heating system Efficiency of biomass fuel indirect-fired
50
Chamber wherein the grains are temporarily held after drying chamber or to the storge bin
Tempering bin
Grains which shows signs of fissures or fractures or splinters
Cracked grains
Mechanical grain dryer wherein the grain is held stationary in a horizontal grain holding bin
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 tp circulate and/or mix fixed amount of grain during the drying operation
Recirculating type
Organic material used as renewable source of energy.
Biomass
Pieces of grains smaller than 3/4 of the average length of the whole kernel.
Broken grains
Dryer in which the material being dried moves through the drying chamber in a substantially continous stream and is discharged without being recirculated and where the drying and tempering processes are accomplished in another holding bin or column
Continous flow dryer
Unshelled fruit of the corn plant where husk has been removed
Dehusked corn/ ear corn/ Corn on Cob
Difference between the maximum and the minimum grain moisture content randomly sampled after drying
Moisture gradient
Chamber maintained under pressure for uniform distribution of the heated air through the grain mass
Plenum
Any device that is used to avoid human accident related to drying operation and/or damage to the parts and components of the dryer duing the operation and automatically shuts off the operation of the dryer in case of malfunction
Safety device
Ratio of the total heat utilized to vaporize the moisture in the material, to the total amount of heat added to the drying air, expressed in percent
Drying efficiency
Air moving device that is used to force heated air through the mass of grains at desired air flow rate and pressure.
Fan
Grain or a piece of a grain with the length equal to or greater than 3/4 of the average length of the whole kernel
Head rice
Device used to remove grain moisture by forcing heated air through the grain mass until the desires moisture content is attained
Heated air mechanical grain dryer
Ratio of the amount of heat added in the air to the heat available in the fuel
Heating system efficiency
Chamber wherein the grains are temporarily held after drying or to the storage bin
Tempering bin
Maximum percent moisture gradient for batch type dryer
4.0
Maximum percent moisture gradient for recirculating type dryer
2.0
Drying efficiency of the dryer
75
Maximum drying loss/spillage
1.0
The noise emitted by the heated-air mechanical grain dryer shall not exceed
92 dB
Drying rate, %/h (Batch type - Rice)
0.8
Drying rate, %/h (Continuous flow - Rice)
1.0
Drying rate, %/h (Shelled Corn)
2.0
Drying rate, %/h (Corn Ear)
0.4
