Back to News news New: Air recirculation unit Following 2 years of development and extensive testing, these are the first pictures of the new Air Recirculation Unit. Designed for high uniformity of drying air, it consists of a compact stainless steel cyclone, fines valve, air fan, automatic air flow control valve and heater (steam or gas), all interconnected and integrated into a single insulated unit. Temperature sensors connected to the advanced dryer control system allow heater and fan to be stopped quickly to prevent the risk of fire. Inspection hatches can be used for checking of all internal ducting. All critical mechanical and electrical components can be approached from the outside. The new Air Recirculation Unit is available for both Batch Dryers and Continuous Dryers. For Batch Dryers, multiple Air Recirculation Units can be stacked on top of each other. The plant volume required to install such an air system is less than half compared to installation of a conventional cyclone with separate fan and heater. In addition there are significant savings in costs of ducting, support frames, insulation and assembly.