Patent ID: 6202319
Filing Date: 2001-03-20
Classification: F26B,Y02P

Abstract:
A grain dryer comprising:a central air plenum;a plurality of grain columns extending across opposite sides of the air plenum, each grain column having an inner porous wall separating the grain column from the air plenum and an outer porous wall spaced outwardly from the inner porous wall and the air plenum;a plurality of heat exchange columns extending along the grain columns, the heat exchange columns having heat conductive walls mounted over the outer porous walls of the grain columns and enclosing interior volumes of the heat exchange columns that communicate with the grain columns through the outer porous walls; and,a plurality of ambient air columns extending along the heat exchange columns, the ambient air columns having external walls mounted over the heat conductive walls of the heat exchange columns and enclosing interior volumes of the ambient air columns that receive heat from the heat exchange columns through the heat conductive walls.