Grain Cooling Solution for 2000 Ton Flat Bottom Rice Silo

Efficient grain storage is essential for maintaining crop quality, preventing moisture migration, and protecting valuable harvests from spoilage. For flat-bottom rice silos with large capacities—such as a 3500 m³ silo holding approximately 2000 metric tons of rice—a dedicated grain cooling system provides one of the most reliable and energy-efficient methods of long-term preservation.

Why a Grain Cooler Is Essential for Rice Storage

Rice is highly sensitive to temperature and moisture changes. Without proper cooling, stored rice is at risk of:

• Insect infestation, as insects thrive between 25–35°C

• Mold growth caused by condensation and hotspots

• Respiration losses, reducing grain quality and weight

• Moisture migration, resulting in rotting or spoilage layers

• Color degradation, especially for premium varieties

A grain cooler stabilizes the internal climate of the silo by supplying clean, dry, and cooled air, keeping rice in optimal conditions throughout storage.

Cooling Capacity for a 3500 m³ / 2000-Ton Rice Silo

A silo of this size requires a robust cooling solution capable of delivering a steady flow of chilled air throughout the grain mass. A typical grain cooler for this application includes:

• Cooling capacity: 80–120 kW (depending on region and ambient climate)

• Airflow: 10,000–14,000 m³/h

• Temperature reduction: 10–15°C below ambient

• Dew point control: to avoid condensation during aeration

• Automatic control system: monitors and adjusts temperature and humidity

The system gradually cools the full 2000-ton bulk within days, maintaining uniform conditions across all layers of the silo.

How the Grain Cooler Works

1. Air Intake
   Ambient air enters the cooler, where filters remove dust and impurities.

2. Cooling and Dehumidification
   The refrigeration system lowers air temperature and reduces moisture content, producing chilled dry air.

3. Distribution into the Silo
   The air is blown through the silo’s aeration ducts or perforated floor, penetrating the entire grain mass.

4. Condition Stabilization
   Once the target grain temperature—usually 12–15°C for rice—is achieved, the system operates automatically to maintain stability.

Benefits of Using a Grain Cooler for Rice Silos

• Prevents insects and mold without fumigation

• Improves storage longevity and preserves grain freshness

• Reduces spoilage losses and protects market value

• Minimizes energy consumption compared with continuous ventilation

• Maintains color and aroma, crucial for milling and export markets

• Ideal for tropical and subtropical regions, where ambient temperatures remain high year-round