ROI Simulation Tool

Diameter (ft) 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99 102 105

Eave Height Rings/Size 3N 4N 5N 6N 7N 8N 9N 10N 11N 12N 13N 14N 15N 16N 17N 18N 19N 20N 21N 22N 23N 24N 25N 3W 4W 5W 6W 7W 8W 9W 10W 11W 12W 13W 14W 15W 16W 17W 18W 19W 20W
Measured (ft)

Fan Size (HP) 5 10 15 20 25 30 35 40 45 50 55 60

Number Fans 1 2 3 4

Heater Type Propane Electric None

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Type Corn Wheat Rice Soybeans

Depth Full Bin
Measured (ft)

Initial Moisture (%) 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21 21.5 22 22.5 23 23.5 24 24.5 25 25.5 26 26.5 27

Initial Temp (F) 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110

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Air Flow (CFM/bu) Calculated in Step 1
Manual 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0

Location ---

Start Date January February March April May June July August September October November December 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Start Year 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Number of years 1 2 3 4 5 6 7 8 9 10

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Final Moisture 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18

Allowable Margin (%) .2 .3 .4 .5 .6 .7 .8 .9 1.0

Final Temperature (F) 35 40 45 50 55 60 65 70 75 80

End Date January February March April May June July August September October November December 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

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$/KWH .05 .06 .07 .08 .09 .10 .11 .12 .13 .14 .15 .16 .17 .18 .19 .20 .21 .22 .23 .24 .25

Propane/gal 1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.80 3.90 4.00 4.10 4.20 4.30 4.40 4.50 4.60 4.70 4.80 4.90 5.00