Industrial building heating circulation system - has columnar construction with chamber and ventilator fan

摘要

Air circulation and heating device consists of an upright construction which forms a vertical chamber. The construction has upper and lower apertures which extend around the larger part of the upper and lower ends of the construction. A fan system is mounted within the construction and is used to force air through the chamber from the base level upwards. The system allows annular circulation flow near the fan and produces a secondary annular circulation flow above the fan so that air inside the room to be ventilated is mixed and circulated with air from the heater system.