Air Heating Banks

Air Heating Banks

Air heating banks are modular arrangements of multiple electric heating elements designed to heat larger or higher-capacity air streams. The bank can be configured in rows or stages to suit the duct cross-section, airflow distribution, electrical supply, and required temperature rise. Compared with a single small heater, a bank offers flexibility in power segmentation, maintenance access, and integration into process equipment. Design work should address element spacing, frame material, pressure drop, air velocity across each row, thermal expansion, and temperature uniformity. Multiple power stages can be switched independently, or solid-state control can be used where the process requires closer regulation. Airflow proving, high-limit thermostats, sensor placement, and suitable electrical protection should be considered in the overall assembly. The heater bank is often part of a hot-air generator, dryer, oven, or process-air skid.