Onion Store Drying, Ventilation & Refrigeration

Drying, ventilation, refrigeration and Cropscan control for box and bulk onion stores. Use the dots below to see three typical store layouts and which equipment goes where.

Onion Box Storage - 1

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Cutaway illustration of onion box store layout 1 with numbered equipment positions

Onion Box Storage - 2

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Cutaway illustration of onion box store layout 2 with numbered equipment positions

1 Junction box
2 Air bags
3 Roof fans
4 Crop sensors
5 Floor standing humidifier
6 Suction wall
7 Packaged ambient unit
8 Cropscan
9 Packaged refrigeration unit
10 Motorised louvres
11 Gas burner
12 Ambient temperature & humidity sensor

Onion Box Storage - 3

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Cutaway illustration of onion store layout 3 with numbered equipment positions

For onion stores we supply drying plenums and fully modulating gas burners for onion drying and curing, then motorised louvres, packaged ambient and refrigeration units, evaporator coils and fans, floor-standing humidifiers and Cropscan onion control to hold the crop in store.

Questions about onion storage

How are onions dried in store?

Our layouts use a drying plenum and gas burners. Condensation drying, which runs on electricity whatever the weather, is another way to dry stored crops.

Which controller runs an onion store?

Cropscan. The TS7 Onion Controller manual is on our Manual Downloads page.

Can an onion store use both outside air and refrigeration?

Yes. Layout 2 combines a packaged ambient unit, a packaged refrigeration unit and motorised louvres.

Can humidity be controlled?

Layout 2 includes a floor-standing humidifier and an ambient temperature and humidity sensor.

Next step: get your store sized

Look at our gas heaters and controllers, then send us your tonnage and building details.