DMC | David Manufacturing Co. | Grain Flow Drying Capacities

Grain Flow Drying Capacities

The chart below gives approximate corn drying capacity of the Grain Flow with various combinations of bin diameter, heat rise, and fan and heater sizes. The chart is based on 50° F ambient temperature and 60% relative humidity with starting grain temperature of 50° F. Moisture removal is from 24% to 16 1/2%. Cooling will remove an additional 1% to 2% moisture content. When grain is dried in depths over 8', a Grain-Stir-Ator installed in conjunction with a Grain Flow (as shown) will increase drying efficiency.

Bin Size	Fan H.P.	Drying Rate Multipliers For More Fans		CFM	Static Pressure	Drying Capacity (BU/24 hrs.) Heat Rise Above Ambient Temperature
Bin Size	Fan H.P.	2 Fans	3 Fans	CFM	Static Pressure	25	50	75	100	125	150
18'	5.0 7.5	1.2 1.2	NA NA	8700 9800	2.7 3.2	590 670	1200 1360	1840 2070	2490 2800	3160 3560	3860 4350
21'	5.0 7.5 10.0 12.5	1.4 1.4 1.3 1.4	NA NA NA NA	10000 10800 12000 12900	2.1 2.3 2.7 3.0	680 740 820 880	1380 1500 1660 1790	2110 2280 2530 2720	2860 3090 3430 3690	3640 3930 4360 4690	4440 4790 5330 5730
24'	7.5 10.0 12.5 10C 15C 20C	1.6 1.5 1.5 1.7 1.6 1.6	NA NA NA NA NA NA	11400 13000 14000 12500 14900 17700	1.7 2.0 2.3 1.9 2.5 3.3	780 890 950 850 1010 1210	1580 1800 1940 1730 2060 2450	2410 2740 2950 2640 3140 3740	3260 3720 4010 3580 4260 5060	4150 4730 5090 4550 5420 6440	5060 5770 6220 5550 6610 7860
27'	7.5 10.0 12.5 10C 15C 20C 30C	1.7 1.6 1.6 1.8 1.7 1.7 1.6	NA NA NA NA NA NA NA	11900 13300 14800 12900 15600 18500 21400	1.2 1.5 1.7 1.4 1.9 2.4 3.1	810 910 1010 880 1060 1260 1460	1650 1840 2050 1790 2160 2560 2960	2510 2810 3120 2720 3290 3900 4520	3400 3810 4230 3690 4460 5290 6120	4330 4840 5380 4690 5670 6730 7780	5280 5900 6570 5730 6930 8210 9500
30'	7.5 10.0 12.5 10C 15C 20C 30C	1.8 1.8 1.7 1.8 1.7 1.7 1.7	NA NA NA NA NA NA NA	12200 13700 15300 13200 16100 19100 22100	1.0 1.1 1.3 1.1 1.4 1.9 2.3	830 930 1040 900 1100 1300 1510	1690 1900 2120 1830 2230 2640 3060	2570 2890 3230 2790 3400 4030 4660	3490 3920 4380 3780 4610 5460 6320	4440 4980 5560 4800 5860 6950 8040	5420 6080 6790 5860 7150 8480 9810
33'	10.0 12.5 10C 15C 20C 30C	1.8 1.8 1.8 1.8 1.8 1.8	NA NA NA NA NA NA	13800 15600 13400 16400 19500 22600	.9 1.0 .8 1.1 1.4 1.8	940 1060 910 1120 1330 1540	1910 2160 1860 2270 2700 3130	2910 3290 2830 3460 4120 4770	3950 4460 3830 4690 5580 6470	5020 5670 4870 5960 7090 8220	6130 6930 5950 7280 8660 10030
36'	10.0 12.5 10C 15C 20C 30C	1.9 1.8 1.9 1.8 1.8 1.8	NA NA NA NA NA NA	13900 15900 13600 16600 19800 23000	.7 .8 .7 .9 1.1 1.4	950 1080 930 1130 1350 1570	1920 2200 1880 2300 2740 3180	2930 3360 2870 3500 4180 4850	3980 4550 3890 4750 5660 6580	5060 5780 4950 6040 7200 8360	6170 7060 6040 7370 8790 10210
42'	10.0 12.5 15.0 20C 30C 40C	2.0 1.9 1.9 1.9 1.9 2.2	2.8 2.6 2.7 2.6 2.6 2.7	14000 16200 16900 20100 23500 27000	.4 .6 .6 .8 .9 1.1	950 1100 1150 1370 1600 1840	1940 2240 2340 2780 3250 3740	2950 3420 3570 4240 4960 5700	4010 4630 4840 5750 6720 7720	5090 5890 6150 7310 8550 9820	6220 7190 7500 8920 10430 11990
48'	10.0 12.5 15C 20C 30C 40C 50C	2.0 1.9 1.9 1.9 1.9 2.0 1.9	2.9 2.7 2.8 2.8 2.7 2.8 2.7	14100 16400 17100 20300 23700 27100 32500	.3 .5 .4 .5 .6 .8 1.0	960 1120 1160 1380 1610 1850 2210	1950 2270 2370 2810 3280 3750 4500	2980 3460 3610 4280 5000 5720 6860	4030 4690 4890 5810 6780 7750 9300	5130 5960 6220 7380 8620 9860 11820	6260 7280 7590 9010 10520 12030 14430

Capacities given are for shelled corn. Information on drying other grains is available from your DMC distributor. All multiple fans are in parallel. Multiply Drying Rate x .77 for 10 pt. removal. Multiply Drying Rate x 1.35 for 5 pt. removal. All multiple fan static pressures (where multipliers are shown) fall within acceptable performance guidelines.

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