In a globalized economy, the cold chain plays a pivotal role in the food and healthcare import and export industries. Within this, refrigerated container transport It is the most crucial link, directly determining the quality of goods when they reach consumers. Ensuring stable temperature, precise humidity, and continuous air circulation requires rigorous technical knowledge of industrial refrigeration systems.
What is refrigerated container shipping? Its importance in the Cold Chain.
Refrigerated container shipping (Reefer Container Transport) is the process of transporting temperature-sensitive goods in specialized containers that are capable of self-regulating and maintaining the required temperature environment.
Unlike conventional dry containers, refrigerated containers incorporate a "mobile refrigeration station". In Vietnam, with its tropical monsoon climate, the demand for refrigerated goods transportation is extremely high. Businesses such as Tan Long Refrigeration and Electrical Engineering has continuously improved solutions regarding cold storage and supporting equipment to optimize this process.
Classification of popular refrigerated container types currently available.
In the industrial refrigeration sector, selecting the right equipment is a prerequisite for ensuring supply chain stability. Depending on the biochemical characteristics of the goods, the integrated refrigeration system inside the container must meet stringent temperature ranges.
Below are the 5 most common types of refrigerated containers, according to experts at Tan Long Refrigeration and Electrical Engineering Analysis based on actual operational performance:
| Container type | Key technical features | Main applications | Expert review |
| Refrigerated container (Reefer) | Integration refrigeration compressor High power capacity, high-density PU insulation walls. | Frozen foods, seafood, pharmaceuticals. | The gold standard for goods is to maintain a temperature between -30°C and +30°C. |
| Heated refrigerated container (Heater) | It has the ability to reverse temperature, providing warmth when transported through frigid regions. | Special goods require precise temperature control in extremely cold environments. | The optimal solution for exporting goods to markets with harsh winters. |
| Atmospheric Control Container (CA) | Control the concentrations of O2, CO2, and N2 to inhibit the respiration of the product. | Fresh fruits, fruits for export over long distances (require preservation as in...) cold storage (specialized). | It helps extend product lifespan by 2-3 times compared to conventional containers. |
| The container does not have built-in air conditioning. | Use thick insulation, often employing dry ice or external cooling systems. | The goods were previously deep-frozen. wind tunnel. | Suitable for short distances to optimize operating costs. |
| Special Temp container | Equipped with a system PLC control cabinet Intelligent for multi-temperature monitoring. | Vaccines, highly sensitive electronic components, specialized chemicals. | Absolute accuracy, integrated remote fault detection system. |
Technical considerations regarding refrigeration infrastructure for containers.
To ensure efficient transportation, the entire container shell must be completely airtight. At Tan Long, we recommend that customers carefully inspect the system. cold storage door and rubber seals on containers to prevent "sweating" or heat loss, which can damage goods and waste energy.
Understanding each type of equipment not only helps businesses protect their assets but also optimize logistics costs in the long term.
Standard technical procedures for transporting refrigerated containers.
Transporting goods in refrigerated containers is a complex technical process, requiring close coordination between the transport company and a team of refrigeration experts. To ensure the cold supply chain remains uninterrupted, the process at Tan Long Always follow these strict steps:
Step 1: Assess needs and advise on technical specifications.
Each type of product has its own optimal temperature and humidity range. Experts will advise customers on equipment design, target temperature range (set-point), and operating methods suitable for the specific characteristics of each product type, such as agricultural products, seafood, or pharmaceuticals.
Step 2: Make a booking with the shipping company.
After determining the appropriate container type (20'RF, 40'HR, etc.), the logistics company proceeds to book space with the shipping line to secure the schedule. This needs to be done early to ensure the container is equipped with a reliable refrigeration system that will function reliably throughout the journey.
Step 3: Pre-trip inspection of empty containers (PTI)
This is the most important step from a technical standpoint. The container must undergo a thorough inspection:
- Clean the inside of the container and check for airtightness. cold storage door.
- Check the operating condition of refrigeration compressor and the refrigerant level.
- Calibrate temperature sensors to avoid errors when transporting high-value goods.
Step 4: Pack the goods and set up the storage environment.
Goods are usually stored in cold storage To achieve the correct temperature before placing the items in the container, technicians will set the temperature, humidity, and ventilation parameters via the system. control cabinet Modern design on a shipping container.
Step 5: Transport to the port and unload at the yard.
After being sealed, the containers are transported to the container yard (CY) at the port. There, the containers must be immediately connected to the port's power supply to maintain a stable temperature while awaiting loading onto the ship.
Step 6: Tracking and temperature monitoring
Throughout the time on board, the monitoring system (which may integrate IoT or SCADA technology) will track location and temperature fluctuations. This helps to promptly address power outages or system failures. industrial refrigeration if it arises.
Step 7: Unload the goods and complete import procedures.
When the ship arrives at its destination port, the containers are unloaded and the port's power supply is reconnected. The inspection team will check the seals and temperature readings recorded throughout the voyage to ensure the goods remain in good condition.
Step 8: Final delivery to the storage warehouse.
The final step in the process is transporting the container from the port to the recipient's warehouse. There, the goods will be quickly transferred into the appropriate facilities. wind tunnel or dedicated warehouses to maintain product value before distribution to the market.
Adhering to proper procedures not only helps businesses minimize the risk of goods damage but also optimizes operating costs. As a leading provider of industrial refrigeration equipment, Tan Long We are always ready to partner with our customers in providing the most comprehensive consulting and cold storage infrastructure solutions.
Strategic items in refrigerated transport
Setting the specifications for refrigerated containers depends entirely on the physicochemical properties of each type of cargo. Below are four main product groups that require stringent operating procedures:
- Fresh food and seafood: For meat, fish, and seafood, maintaining freshness and cellular structure is crucial. Before being packed into containers, the goods need to be processed through a system. IQF conveyor or wind tunnel To achieve deep freezing, prevent bacterial contamination and drip loss.
- Fruits and agricultural products for export: These are products that undergo significant post-harvest respiration. Refrigerated container transport requires careful control of humidity and air circulation to prevent wilting or mold growth. This process demands preservation standards equivalent to those of a conventional system. cold storage for agricultural products specialized Tan Long.
- Pharmaceuticals, Vaccines, and Medical Supplies: This category of goods is extremely valuable and highly sensitive to temperature. Even a 1-2°C deviation can lead to the destruction of the chemical structure of the pharmaceuticals. Therefore, the refrigeration system on the container must integrate various components. PLC control cabinet Intelligent for monitoring and alerting to temperature deviations in real time.
- Electronic Components and Precision Equipment: Sensitive equipment requires a dry, stable environment to prevent condensation (sweating) that can cause short circuits or oxidation. The system water chiller And the heat exchanger units must operate in harmony to maintain ideal humidity throughout the journey.
Understanding the characteristics of each product group helps the technical team at Tan Long Providing the most accurate advice on equipment and operating procedures, ensuring maximum safety for our clients' assets.
Important considerations when transporting refrigerated containers.
To ensure an uninterrupted cold chain supply and minimize the risk of product damage, businesses need to pay special attention to the following key technical factors:
- Strict PTI (Pre-trip Inspection) technical testing: Before departure, the entire system must be checked for operational readiness. In particular... refrigeration compressor – The “heart” of the system – must ensure stable pressure and current. Any small error at this stage can lead to product failure along the long journey.
- Choose a compatible container configuration: Not all refrigerated containers are the same. Depending on whether the goods need to be deep-frozen or kept cool, you need to choose equipment with the appropriate technical specifications, similar to choosing standards during construction. cold storage industrial.
- Monitoring operational parameters 24/7: Maintaining a stable temperature isn't enough; you also need to control humidity and atmospheric concentration. Use a system. PLC control cabinet Modern technology will help record data continuously and issue alerts immediately when there is a temperature deviation, even as small as 0.5°C.
- Packing techniques and stacking diagrams: Goods must be packaged properly to avoid damaging the internal insulation system. In particular, the loading and unloading methods must be scientific to ensure proper airflow of cold air. industrial refrigeration This allows for proper circulation, preventing goods from becoming "heat-stale" in hidden corners.
- Optimize your time and schedule management: The transport time needs to be calculated to match the equipment's ability to maintain temperature. For long journeys, checking the airtightness of the equipment is essential. cold storage door Storing the container is mandatory to prevent the penetration of external ambient temperature.
Adhering to these technical guidelines not only helps protect assets but also enhances the company's reputation in the eyes of partners. If you require further consultation on refrigeration solutions, our team of engineers at Tan Long We are always available to assist you 24/7.
Comprehensive and sustainable industrial refrigeration infrastructure solutions at Tan Long.
With extensive practical experience dating back to 2005, Tan Long Refrigeration and Electrical Engineering Joint Stock Company We have established ourselves as a pioneer in providing high-quality industrial refrigeration solutions in Vietnam. We don't just supply equipment; we offer a comprehensive ecosystem of solutions, from design consultation and construction to in-depth maintenance.
The core strengths that create value for Tan Long include:
- Design and construction of wind tunnels to international standards: Ultra-fast freezing solutions help products reach the precise core temperature in the shortest possible time, ensuring the preservation of cellular structure and sensory quality for exported food.
- We supply Chiller water cooling systems: The industrial chiller lines distributed by Tan Long are optimized for cooling performance, helping to maintain a stable supply of cool water for production processes and factory operations, while also providing superior energy savings.
- Solution pressure vessel and safety systems: We specialize in providing pressure vessels that meet stringent inspection standards, along with automatic safety protection systems, ensuring complete safety. industrial refrigeration system It operates reliably and without any fire or explosion incidents.
- Intelligent control system: Technology integration PLC control cabinet and SCADA/IoT monitoring, allowing customers to visually monitor temperature and pressure parameters and remotely control the system with the highest accuracy.
By combining a team of skilled engineers with advanced equipment. refrigeration compressor From leading global brands, Tan Long is committed to providing optimal cold storage infrastructure solutions, helping businesses enhance their competitiveness and preserve the value of goods throughout the supply chain.
Refrigerated container shipping This is a technical problem requiring absolute precision. Understanding the operating principles of refrigeration systems and preservation processes will help businesses minimize risks and optimize profits.
If you are looking for cold storage infrastructure solutions, warehouse installation, or standard industrial refrigeration equipment, please contact us immediately. Tan Long To receive advice from leading experts.
Contact information:
- Address: 86 Dong Den Street, Ward 14, Tan Binh District, Ho Chi Minh City.
- Phone: (+84) 028 3849 4943
- E-mail: info@tanlongvn.com
- Website: tanlongvn.com
Answering technical questions about refrigerated container shipping.
During the operation of a cold supply chain, businesses often encounter technical problems. Below is a compilation of common questions and advice from technical experts. Tan Long:
Why did the temperature inside the refrigerated container rise unusually high even though the system was running?
This phenomenon usually stems from two main technical causes:
- Goods that have not reached the standard temperature (Pre-cooled): If the goods have not been deep-frozen cold storage Before being loaded into the container, the container's refrigeration system (which is designed only to maintain temperature) will be overloaded as it tries to lower the temperature of the goods.
- Short-cycling: Stacks of goods are too high, exceeding the "red line," or pallets are blocking the air vents on the floor. This causes airflow from industrial refrigeration The air cannot circulate to the bottom of the container, leading to uneven temperatures.
How much more expensive is shipping in a refrigerated container compared to a dry container?
Generally, refrigerated transport costs will be higher than 30 – 50% compared to dry containers. This difference comes from:
- Power consumption: System refrigeration compressor It must operate continuously to maintain the temperature.
- Technical Inspection Fee (PTI): A rigorous machinery inspection process is carried out before each trip.
- Intensive maintenance: System PLC control cabinet And the sensors need regular maintenance to avoid errors.
How can I check the reliability and thermal insulation of a container before renting it?
To ensure the safety of your goods, you need to follow these steps:
- Request the latest PTI (Pre-trip Inspection) report: This is the "birth certificate" guaranteeing that the refrigeration system is in optimal operating condition.
- Check for airtightness: Visually inspect the rubber gaskets at cold storage door of the container. If the seal is leaking or the container walls have large dents, the potential for heat loss is very high.
- Check the temperature history: Review data from the temperature data logger of previous shipments to assess the equipment's stability.
Is it necessary to freeze goods quickly before placing them in refrigerated containers?
It is absolutely necessary. Refrigerated containers are not the same as freezing equipment. To keep goods as fresh as possible, products should be processed beforehand. IQF conveyor or wind tunnel To achieve the required core product temperature before container packing.
