49 kW Glycol Unit Cooler for Prepared Dishes Cold Storage

In the prepared dishes and ready-to-eat food industry, maintaining stable, hygienic, and energy-efficient cooling is essential to ensure product safety, shelf life, and compliance with food regulations. This 49 kW glycol unit cooler is specifically engineered for prepared dishes cold storage rooms operating at 13 °C, where precise temperature control and corrosion resistance are critical.

Application Overview

This unit cooler is designed for:

• Prepared dishes and semi-finished food storage

• Central kitchens and food processing plants

• Chilled buffer rooms before packaging or distribution

The system uses 30% glycol solution as the cooling medium, making it suitable for facilities requiring indirect cooling, freeze protection, and high operational reliability.

Key Operating Parameters

• Cooling capacity: 49 kW

• Room temperature: 13 °C

• Cooling medium: 30% glycol solution

• Glycol inlet temperature: 0 °C

• Glycol outlet temperature: 5 °C

• Defrost method: Air defrosting

These parameters ensure gentle, uniform cooling without surface freezing or moisture condensation on prepared food products.

Heat Exchanger Construction

The unit cooler adopts a robust and food-grade heat exchanger design:

• Copper tubes
  High thermal conductivity ensures efficient heat transfer and stable performance under continuous operation.

• Aluminum-magnesium alloy fins
  Enhanced corrosion resistance compared to standard aluminum fins, ideal for humid food storage environments and frequent wash-downs.

This combination delivers an optimal balance between heat transfer efficiency, durability, and lifecycle cost.

Food-Grade Stainless Steel Design

Hygiene and cleanability are key requirements in prepared food facilities. This unit cooler is built with extensive stainless-steel components:

• SUS304 shell – corrosion-resistant, easy to clean, and compliant with food industry standards

• All-stainless-steel SUS304 axial flow fans – high airflow efficiency, long service life, and resistance to moisture and cleaning chemicals

• SUS304 double-insulation water pan – prevents condensation leakage, improves thermal insulation, and supports strict hygiene management

Air Defrosting System

The unit cooler uses air defrosting, which is well-suited for medium-temperature applications like prepared dishes storage:

• No additional electric heaters required

• Lower energy consumption

• Reduced maintenance complexity

• Stable room temperature during defrost cycles

This defrost method helps maintain product quality while minimizing operational costs.

Advantages for Prepared Dishes Cold Storage

• Stable 13 °C room temperature for food safety

• Indirect glycol cooling with freeze protection

• Corrosion-resistant materials for long service life

• Hygienic SUS304 construction for food processing environments

• Energy-efficient operation with low maintenance requirements

Conclusion

This 49 kW glycol unit cooler is an ideal solution for prepared dishes cold storage rooms, combining high heat transfer efficiency, food-grade stainless steel construction, and reliable air defrosting. It meets the demanding requirements of modern prepared food processing plants, ensuring product quality, operational stability, and long-term value.