Half-round ventilation ducts
Half-round ventilation ducts are ideal for aerating, ventilating, drying and cooling potatoes, onions, cereals and other crops.
The half-round ducts are made of senzidimir. By curving and bending it to a half-round shape a strength results which is enough to guarantee a 12 metre storage height.
The half-round ventilation ducts are standard fully perforated. Partly perforated half-round ventilation ducts available upon request. The partly perforated ventilation ducts have a 30% smaller flow through surface.
Special adapters can be supplied for air tightening the conversion between two different duct types.
Technical details per duct:
Undulation: 76 x 24 mm.
Length per element: 900 mm.
Working length per element: 850 mm.
Remarks:
Starting point for (A) potato ducts: 6.5 m/sec 100 m /m
Starting point for (U) onion ducts: 7.0 m/sec 150 m /m
Starting from 40,000 m/duct/hour, optionally placing the first element on two small beams to increase the diameter.
Longer ducts than those calculated should be evaluated on a case-to-case basis with respect to allowable air speeds.
Undulation: 76 x 24 mm.
Length per element: 900 mm.
Working length per element: 850 mm.
Remarks:
Starting point for (A) potato ducts: 6.5 m/sec 100 m /m
Starting point for (U) onion ducts: 7.0 m/sec 150 m /m
Starting from 40,000 m/duct/hour, optionally placing the first element on two small beams to increase the diameter.
Longer ducts than those calculated should be evaluated on a case-to-case basis with respect to allowable air speeds.