VRE Recirculation Fans for Storage Rooms

Internal Air Movement for Stable Storage Microclimate

How VRE Fans Support Crop Storage

The fan creates a directed air stream across the room. This helps reduce temperature differences between upper and lower air layers, supports evaporation from wet surfaces and limits the formation of cold or humid pockets near walls, ceilings and corners.

For vegetable storage, recirculation is valuable during holding periods, drying phases and transitions between cooling, ventilation and heating modes. In greenhouses, the same principle improves temperature uniformity around plants and structural surfaces.

Construction and Options

• Axial fan layout: flanged cylindrical housing with a matched impeller and asynchronous three-phase motor.
• Materials: impellers are available in composite or galvanized steel; housings are made from galvanized steel or polymer-coated steel.
• Protection: IP54/IP55 motor protection is suitable for demanding agricultural rooms.
• Mounting options: protective guards and mounting bases can be specified for the installation layout.
• Heating option: a 1.5 kW electric heating element can be used where recirculation and light air heating are combined.

Model Range

Selection Notes

Fan selection should be based on room geometry, ceiling height, crop arrangement, container rows, rack layout and the position of refrigeration, heating and ventilation equipment. Units should support the intended circulation pattern instead of creating short loops or opposing air streams.

In larger rooms, several VRE fans are normally distributed along the length of the chamber. Where a heating element is used, heated and non-heated fans can be alternated to avoid local overheating and to distribute thermal energy more evenly.