Heat Pump Conveyor Dryers 

Kerone’s Heat Pump Conveyor Dryers are available as single-pass, single-belt tunnels for straightforward continuous drying and as multi-tier conveyor systems where the product transfers between stacked belts to extend residence time within a shorter tunnel footprint. Airflow configuration can be through-flow, where air passes vertically through a permeable product bed on a mesh belt, or over-flow, where air passes horizontally across the product surface, with the choice depending on particle size, bed permeability and whether through-flow would disturb a fragile product. Zone counts typically range from two to six independently controlled sections depending on tunnel length and the complexity of the product’s drying curve, and tunnels can be built in straight-through or U-shaped layouts to fit available plant floor space. Insulated tunnel panels with minimal thermal bridging are used throughout to protect the energy efficiency gains delivered by the heat pump circuit, and inspection doors are positioned along the tunnel length to allow visual monitoring and maintenance access without interrupting airflow in adjacent zones. Inlet and outlet air locks or curtains are incorporated at tunnel entry and exit points to minimise ambient air infiltration where the belt passes through the tunnel wall, protecting the humidity control the heat pump circuit is designed to maintain.