CO2 Removal System for Vegetable Storage
Automatic CO2 removal for vegetable storage rooms. The system extracts air from the lower zone of the chamber when carbon dioxide rises above the set point, helping protect stored crops without disturbing the whole microclimate.
Vegetable storage ventilation
CO2 Removal System for Vegetable Storage
A dedicated CO2 removal system keeps carbon dioxide concentration under control in potato, onion, carrot, cabbage and other vegetable storage chambers without forcing the main ventilation system to run every time gas levels rise.
Why it matters
Fresh crops continue to breathe after harvest. In a closed storage room this respiration increases CO2 concentration, especially near the lower zones of the chamber. If the gas is not removed in time, product quality and storage stability can suffer.
Targeted extraction
Air is taken from the lower point of the storage chamber, where CO2 tends to accumulate, and discharged outside the room.
Sensor-based control
The controller starts the system automatically when the CO2 sensor detects that the concentration has reached the set threshold.
Less climate disturbance
The system removes excess CO2 without unnecessarily switching on the full active ventilation cycle and disturbing temperature or humidity.
How the system works
The system is designed as a focused exhaust circuit for storage rooms. A CO2 sensor monitors the chamber atmosphere. When the concentration reaches the configured limit, the controller activates the extraction unit. Air is removed from the lower zone of the room and replaced by controlled fresh air according to the storage concept.
This approach is useful when the crop requires stable temperature and humidity, but still needs periodic removal of respiration products. Instead of using the entire ventilation system for every correction, the CO2 removal system works only on the parameter that has moved out of range.
Typical applications
| Application | Why CO2 control is important | System role |
|---|---|---|
| Potato storage | Respiration continues during curing, cooling and long-term holding. | Prevents excessive CO2 buildup while supporting stable storage modes. |
| Onion storage | Drying and holding require careful balance between air exchange and product condition. | Allows gas correction without overusing the main ventilation system. |
| Carrot and cabbage storage | High-humidity storage rooms are sensitive to unnecessary air replacement. | Removes respiration products while reducing avoidable humidity loss. |
What is included in the solution
- CO2 sensor placement based on storage-room geometry and expected gas accumulation zones.
- Exhaust fan and duct route for removing air from the lower chamber area.
- Controller logic for automatic activation by gas concentration threshold.
- Integration with the overall ventilation and microclimate-control strategy.
- Commissioning support and adjustment of operating set points after crop loading.
Related equipment
Engineering note
CO2 removal is not a replacement for a properly designed storage ventilation system. It is a targeted control layer that helps keep the chamber atmosphere within safe limits while preserving the temperature and humidity strategy selected for the crop.
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