Application engineering note
An airport air-handling fan selection needs the operating requirements of the particular AHU. Terminal area or building type alone does not establish the airflow, pressure or motor configuration required by an individual unit.
Specify the AHU duty and layout
LONGWELL’s LWBE family uses backward-curved centrifugal impellers and includes EC motor configurations. A plug-fan layout may be evaluated where the AHU enclosure provides the required inlet and discharge arrangement.
Provide airflow and static pressure together, including the intended filter condition, coil losses and connection to the duct system. Where the design uses a fan array, show the individual fan positions and the operating sequence required by the air-handling design.
Plan controls and service access
Identify the mains supply, speed-control input and monitoring connections on the exact selected model. Coordinate those interfaces with the AHU controller and the building’s specified operating modes.
Check inlet clearances, mounting points, cable routes and the path for removing a fan for service. Include the agreed airflow, acoustic and control checks in the AHU evaluation plan. Comparing fan proposals at the same duty point and operating schedule also provides a sound basis for the equipment designer’s power-consumption assessment.
Discuss your fan requirement
Send LONGWELL your airflow and pressure duty point, power supply, available installation space, control requirements, operating environment and drawings. Contact our engineering team to discuss a suitable configuration.
Choose the right centrifugal fan
Longwell manufactures 1,146 centrifugal fans in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.
