Aasted Nielsen - Cooling Tunnel

Applications & Use Cases

• Cooling chocolate, confectionery, and baked goods after enrobing or baking.
• Rapidly reducing the temperature of prepared foods to extend shelf life.
• Setting glazes, icings, and coatings on various food products.
• Cooling products in a continuous flow within an automated production line.

Typical Specifications

Typical capacity

Throughput for this class of equipment typically ranges from 100 kg/hr to over 1000 kg/hr, depending on product type and cooling requirements.

Power supply

Units of this type commonly require a 3-phase electrical supply, typically 400V, 50Hz, with varying amperage depending on the refrigeration unit size.

Refrigeration method

Most cooling tunnels utilise a direct expansion refrigeration system or chilled water/glycol circulation.

Temperature range

Operating temperatures are typically adjustable, commonly ranging from +5°C down to -15°C, suitable for various cooling applications.

Belt material

Belts are commonly made from food-grade PU, PVC, or stainless steel mesh, chosen for hygiene and durability.

Footprint

While this unit is 5m long, cooling tunnels for this class of equipment typically range from 3m to over 20m in total length, with widths varying based on belt size.

Control system

Units commonly feature a control panel with adjustable belt speed, temperature settings, and emergency stop functions.

Frequently Asked Questions

• What maintenance is typically required for a cooling tunnel?

  Regular cleaning of the belt and cooling chambers, inspection of the refrigeration system, and checking belt tension and alignment are typically required. Refrigerant levels should be checked periodically by a qualified technician.

• Can the belt speed be adjusted?

• What type of products can be processed in this cooling tunnel?

• Is insulation important for a cooling tunnel?

• What are the common safety features on cooling tunnels?