Chapter 2: The TopDry™ System
TopDry Terminal Drying Capacities
Table 2-1 Drying Rates for Shelled Corn
TopDry Terminal Series 24' Dia. 1-Fan 30' Dia. 1-Fan 30' Dia. 2-Fan 36' Dia. 1-Fan 36' Dia. 2-Fan
Fan & Heater
Unit(s)
Plenum
Temp.
Mois-
ture
Content
Wet
Basis
BPH
Dump
Inter-
val Min
BPH
Dump
Inter-
val Min
BPH
Dump
Inter-
val Min
BPH
Dump
Inter-
val Min
BPH
Dump
Inter-
val Min
15 H.P. 36" Fan
3.5 million BTU
160° F
20% 528 21.6 557 31.9 939 18.9 993 19.4
25% 334 34.1 353 50.4 595 29.9 629 30.6
30% 209 54.6 220 80.8 371 47.9 393 49
180° F
20% 675* 16.8* 713* 24.9* 1202 14.8 1271 15.1
25% 428* 26.6* 451* 39.4* 761 23.4 805 23.9
30% 267* 42.6* 282* 63.1* 475 37.4 503 38.3
200° F
20% 791*
14.4*
835* 21.3* 1407* 12.6* 1488* 12.9*
25% 501* 22.7* 529* 33.6* 891* 19.9* 943* 20.4*
30% 313* 36.4* 330* 53.9* 557* 32.0* 589* 32.7*
15 H.P. 40" Fan
6.25 million BTU
160° F
20% 648 17.5 711 25 1154 15.4 1269 15.2
25%
411 27.7 450 39.5 731 24.3 803 24
30% 256 44.4 281 63.3 457 39 502 38.4
180° F
20% 830* 13.7* 909* 19.5* 1477 12 1623 11.9
25% 525* 21.6* 576* 30.9* 936 19 1028 18.7
30% 328* 34.7* 360* 49.5* 584 30.4 642 30
200° F
20% 971*
11.7*
1065* 16.7* 1730* 10.2* 1901 10.1*
25%
615* 18.5* 674* 26.4* 1096* 16.2* 1204 16.0*
30% 384* 29.6* 421* 42.2* 684* 26.0* 752 25.6*
30 H.P. 42" Fan
10.25 million BTU
160° F
20% 740 15.4 806 22 819 23.5 1452 13.2
25% 469 24.3 511 34.8 519 37.1 920 20.9
30% 293 38.9 319 55.8 324 59.4 574 33.5
180° F
20% 947 12 1032 17.2 1048 18.3 1858 10.4
25% 600 19 653 27.2 664 29 1177 16.3
30% 375 30.4 408 43.6 415 46.4 735 26.1
200° F
20% 1109 10.2 1208 14.7 1227 15.6 2176 8.8
25% 702 16.2 765 23.2 777 24.7 1378 14
30% 439 25.9 478 37.2 486 39.6 861 22.4
40 H.P. 42" Fan
10.25 million BTU
160° F
20% 920 19.3 950 20.2
25% 583 30.5 602 32
30% 364 48.9 376 51.2
180° F
20% 1178 15.1 1216 15.8
25% 746 23.8 770 25
30% 466 38.2 481 40
200° F
20% 1379 12.9 1424 13.5
25% 873 20.3 902 21.3
30% 545 32.6 563 34.2
NOTE: * Insufficient burner BTUs for 45°F ambient temperature.
Batch Capacities exclude loading time. Final moisture 15% after complete cooling.
Estimated at 45°F. ambient temperature, 65% relative humidity. 1/3 CFM/Bu. cooling rate.
Capacities listed are wet bushels/tonnes, for mature unfrozen #2 yellow shelled dent corn at listed
moisture content and are estimates based on drying principles, field results and computer simula-
tion. Variance may occur due to grain's physiological factors (kernel size, chemical composition,
variety, maturity), excessive fines, adverse weather conditions, etc.
24 Pneg–4900 TopDry Terminal™
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