LTD HEATER OPERATION
The following tables are general values for equilibrium moisture con- tent. The equilibrium moisture con- tent is the moisture content that the grain will eventually arrive at if ex- posed to specific air conditions for a long enough period of time. The equilibrium moisture content does
not tell us how fast the grain will lose moisture to get to its equilibrium moisture content. Generally, drying air conditions with a lower equilib- rium moisture content are used to increase the rate of moisture re- moval. The drying process is then stopped before the grain can reach
equilibrium with the drying air. The following tables should only be used as a guide for management of grain conditioning systems, possible de- viations may occur due to varieties and grain condition. (Values calcu- lated from the
EQUILIBRIUM MOISTURE TABLE FOR SHELLED CORN % WET BASIS
Temp. |
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| Relative Humidity (percent) | 70 | 80 | 90 | ||
degrees | 10 | 20 | 30 | 40 | 50 | 60 | |||
35 | 5.2 | 7.6 | 9.5 | 11.3 | 13.0 | 14.8 | 16.8 | 19.1 | 22.2 |
40 | 5.0 | 7.4 | 9.3 | 11.0 | 12.7 | 14.5 | 16.4 | 18.7 | 21.7 |
45 | 4.9 | 7.2 | 9.0 | 10.8 | 12.4 | 14.2 | 16.0 | 18.3 | 21.3 |
50 | 4.8 | 7.0 | 8.8 | 10.5 | 12.2 | 13.9 | 15.7 | 17.9 | 20.9 |
55 | 4.7 | 6.9 | 8.6 | 10.3 | 11.9 | 13.6 | 15.4 | 17.5 | 20.5 |
60 | 4.6 | 6.7 | 8.5 | 10.1 | 11.7 | 13.3 | 15.1 | 17.2 | 20.1 |
65 | 4.5 | 6.6 | 8.3 | 9.9 | 11.4 | 13.0 | 14.8 | 16.9 | 19.7 |
70 | 4.4 | 6.4 | 8.1 | 9.7 | 11.2 | 12.8 | 14.5 | 16.6 | 19.4 |
75 | 4.3 | 6.3 | 8.0 | 9.5 | 11.0 | 12.6 | 14.3 | 16.3 | 19.1 |
80 | 4.2 | 6.2 | 7.8 | 9.3 | 10.8 | 12.4 | 14.0 | 16.0 | 18.8 |
85 | 4.2 | 6.1 | 7.7 | 9.2 | 10.6 | 12.1 | 13.8 | 15.8 | 18.5 |
90 | 4.1 | 6.0 | 7.6 | 9.0 | 10.5 | 12.0 | 13.6 | 15.5 | 18.2 |
95 | 4.0 | 5.9 | 7.4 | 8.9 | 10.3 | 11.8 | 13.4 | 15.3 | 17.9 |
100 | 3.9 | 5.8 | 7.3 | 8.7 | 10.1 | 11.6 | 13.2 | 15.1 | 17.7 |
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EQUILIBRIUM MOISTURE TABLE FOR ROUGH RICE % WET BASIS
Temp. |
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| Relative Humidity (percent) | 70 | 80 | 90 | ||
degrees | 10 | 20 | 30 | 40 | 50 | 60 | |||
35 | 6.3 | 8.3 | 9.9 | 11.3 | 12.6 | 13.9 | 15.3 | 16.9 | 19.1 |
40 | 6.1 | 8.2 | 9.7 | 11.1 | 12.4 | 13.7 | 15.1 | 16.6 | 18.8 |
45 | 6.0 | 8.0 | 9.6 | 10.9 | 12.2 | 13.4 | 14.8 | 16.4 | 18.5 |
50 | 5.9 | 7.9 | 9.4 | 10.7 | 12.0 | 13.2 | 14.6 | 16.1 | 18.2 |
55 | 5.8 | 7.7 | 9.2 | 10.5 | 11.8 | 13.0 | 14.3 | 15.9 | 17.9 |
60 | 5.7 | 7.6 | 9.1 | 10.4 | 11.6 | 12.8 | 14.1 | 15.6 | 17.7 |
65 | 5.6 | 7.5 | 9.0 | 10.2 | 11.4 | 12.6 | 13.9 | 15.4 | 17.4 |
70 | 5.6 | 7.4 | 8.8 | 10.1 | 11.3 | 12.5 | 13.7 | 15.2 | 17.2 |
75 | 5.5 | 7.3 | 8.7 | 9.9 | 11.1 | 12.3 | 13.5 | 15.0 | 17.0 |
80 | 5.4 | 7.2 | 8.6 | 9.8 | 11.0 | 12.1 | 13.4 | 14.8 | 16.8 |
85 | 5.3 | 7.1 | 8.5 | 9.7 | 10.8 | 12.0 | 13.2 | 14.6 | 16.6 |
90 | 5.3 | 7.0 | 8.4 | 9.6 | 10.7 | 11.8 | 13.1 | 14.5 | 16.4 |
95 | 5.2 | 6.9 | 8.3 | 9.4 | 10.6 | 11.7 | 12.9 | 14.3 | 16.2 |
100 | 5.1 | 6.8 | 8.2 | 9.3 | 10.4 | 11.6 | 12.8 | 14.1 | 16.0 |
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