Airstream 18 owner manual Equilibrium Moisture Table for Shelled Corn % WET Basis

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 Henderson-Thomp- son equation.)

EQUILIBRIUM MOISTURE TABLE FOR SHELLED CORN % WET BASIS

Temp.				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

EQUILIBRIUM MOISTURE TABLE FOR ROUGH RICE % WET BASIS

Temp.				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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