Car park jet fans: guide air toward the extract point.
Jet fans add momentum to the air inside a car park. Main extract fans remove that air from the building. See how the two work together, compare LONGWELL LWJA models, and prepare the right information for a project recommendation.
One ventilation route. Two different fan jobs.
A jet fan moves surrounding air along a planned route. Fresh-air openings and main extraction complete that route; beams and ramps can change it.
Directed jet
A fast discharge transfers momentum to the surrounding air.
Entrainment
The jet draws nearby air into the moving stream.
Planned route
Place and orient the fans around beams, ramps and vehicle clearances.
Main extraction
Separate extract fans carry the contaminated air out of the building.
Compare LONGWELL LWJA jet fans.
These three documented configurations give you a concrete starting point. Compare installation length and published electrical data, then ask LONGWELL to confirm the thrust and configuration required by your project.
Manufacturer dimension drawingLWJA200-SN-01
Start with the shortest overall length in this documented range when installation space is limited.
- Published air volume
- 1,360 m³/h
- Power
- 0.12 kW
- Overall length
- 932 mm
Manufacturer dimension drawingLWJA250-SN-01
Compare this intermediate size when evaluating more air volume and a longer installation envelope.
- Published air volume
- 1,998 m³/h
- Power
- 0.21 kW
- Overall length
- 1226 mm
Manufacturer dimension drawingLWJA315-SN-01
Consider the highest published air volume in this group when the larger mounting envelope can be accommodated.
- Published air volume
- 3,000 m³/h
- Power
- 0.55 kW
- Overall length
- 1525 mm
All three drawings list 220 V, 50 Hz. Values are document specifications; they do not define car-park coverage or fan spacing.
For final selection, request the required thrust data, installation arrangement and exact duty qualification. Smoke-control temperature/time classification must be confirmed separately.
Send the layout. We can start from there.
A complete specification is helpful, but you can also begin with the drawing and the information you already have.
Floor plan, clear height, beams, ramps and parking areas.
Fresh-air openings, main extract points and existing extract-fan data.
Normal ventilation requirements and any separate smoke-control specification.
Required thrust, direction, mounting space and acoustic limits, if known.
Supply voltage, frequency, controls and detection interfaces.
Location, quantity, target schedule and existing model for replacements.
Questions to resolve before ordering
Does a jet fan replace the main extract fan?
It moves air within the car park. The system still needs an air supply route and main extraction to remove contaminated air.
Can I choose a model from airflow or floor area alone?
Air volume alone does not establish the thrust, jet reach, spacing or total ventilation result. The layout and complete system determine the selection.
Can these drawings establish smoke-control approval?
The drawings provide dimensions and basic specifications. Ask for the exact temperature/time classification, supporting documentation and project approval required for smoke-control duty.
Get a model recommendation for your car park.
Share your layout and operating requirements with LONGWELL. Ask for a suitable model, dimension drawing and the technical data needed to check the application.
Planning an upgrade? Include the existing fan model and the problem you want to solve.