Grain drying system and method
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United States of America Patent
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Oct 5, 1999
Grant Date -
N/A
app pub date -
Jun 19, 1998
filing date -
Sep 2, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A in-bin grain drying system is the subject of the present invention. A boiler having a variable capacity Btu output heats an ethylene glycol/water heating fluid which is circulated through hydronic coils. Fans move ambient air through the hydronic coils and the dry heated air is circulated to the plenum of the grain bin. The air which enters the bin is less moisture laden than in other drying systems, particularly those which are heated by propane flame. The temperature of the returning fluid is sensed and a fuel supply controller adjusts the amount of fuel supplied to the boiler and thus the Btu output. Accordingly the desired temperature of the air entering the plenum chamber is constant regardless of ambient outside temperature or relative humidity.
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