TLS ISO reefer & refrigerated container: Uses, and Working Principles

TLS ISO reefer & refrigerated container: Dimensions, Uses, and Working Principles
Refrigerated container (commonly referred to as "reefers") play a vital role in transporting temperature-sensitive and perishable goods, ensuring their freshness and quality during long-distance transportation. This blog explores the uses, working principles, and essential knowledge about these containers.

What is the TLS refrigerated container?Reefer container is a large refrigeration unit capable of maintaining temperatures between -20°C and +2°C.(This temperature range is usually sufficient) By connecting to a power source, the refrigeration system injects cool air to maintain a consistent temperature inside the container, preserving the integrity of the goods.

Primary Uses of Container RefrigeratorsReefers are ideal for transporting goods that require low-temperature storage. Commonly transported items include:

• Food Products: Frozen meat, fresh meat, seafood, fruits, vegetables, dairy products, and pickled foods.
• Beverages: Juices, wines, and other drinks.
• Others: Special temperature-controlled goods.

Working Principles of Container Refrigerators

• Maintaining Low Temperatures The reefer’s floor is designed with T-shaped grooves to allow cold air to circulate evenly and maintain stable temperatures. For better cooling efficiency, the interior walls, ceiling, and floor of the container are insulated. However, reefers cannot actively lower the temperature of goods; therefore, cargo must be pre-cooled to the target temperature before loading.
• Power Supply The refrigeration unit is powered either by the ship's electricity or a backup generator, the latter being particularly suitable for highly temperature-sensitive goods.
• Ventilation System The built-in ventilation system removes heat, moisture, and carbon dioxide released by items such as fruits and vegetables, preventing spoilage and quality degradation.
• Humidity Control Reefers are equipped with dehumidification features to adjust humidity to optimal levels, avoiding damage caused by excessive moisture or dryness.
• Drainage System Integrated drainage pipes ensure timely removal of accumulated water, preventing water damage to the cargo.

How to Properly Stow Cargo 
Proper stowage of goods is crucial for the effective operation of a reefer:

• Ensure Air Circulation: Avoid over-packing cargo to prevent obstructing airflow.
• Stow According to Cargo Type: For example, fresh meat should be spaced appropriately to allow heat and gas to escape.
• Pre-Cool Cargo: Ensure goods are pre-cooled to the target temperature before loading.

By following proper stowage methods, the air circulation within the reefer remains stable, ensuring goods maintain optimal conditions.

Conclusion
​Container refrigerators provide a reliable solution for temperature-controlled transportation, suitable for a variety of goods ranging from frozen foods to fresh produce. Understanding their working principles and proper operation can significantly improve logistics efficiency and maintain cargo quality.
 
TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions. 
Wherever you are in the world TLS can help you, please contact us.
 
Any more information regarding Offshore Reefer container, ISO reefer container, please download TLS offshore reefer containers brochure for your reference 
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Written by Snowy

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