Reefer containers with dual refrigeration units, also known as dual cold machine refrigerated containers, are equipped with two independent refrigeration systems (main unit and backup unit). Compared with single cold machine refrigerated containers, they have obvious advantages in performance and reliability. The following are their main features:

1.High reliability and safety

Redundant dual-unit design: Equipped with two independent refrigeration systems (main unit and backup unit), when one unit fails, the other can automatically start to ensure stable internal temperature and prevent goods from deteriorating due to refrigeration interruption.

Reduced transportation risks: Especially suitable for transporting temperature-sensitive goods such as fresh produce and pharmaceuticals, reducing the risk of cargo damage due to equipment failure and improving the safety of logistics transportation.

2.Precise and stable temperature control

Dual-unit temperature control: The two units can work simultaneously or alternately, and the temperature can be precisely regulated through an intelligent control system, with a smaller temperature fluctuation range (usually within ±0.5℃), meeting the storage conditions of high-demand goods. Adaptation to complex environments: In the case of significant changes in external temperature (such as cross-climate zone transportation), the dual cold machine can respond to temperature changes more quickly and maintain a constant internal temperature.

3.High efficiency, energy saving and flexible operation

During normal operation, the single unit or both units can be selected to work based on the amount of goods and temperature requirements, avoiding energy waste.

In low-load conditions (such as when the amount of goods is small or the external temperature is suitable), the single unit can meet the requirements, reducing energy consumption and operating costs.

Energy-saving design: Some dual cold machine containers use variable frequency technology to automatically adjust the refrigeration power according to the actual load, further improving energy efficiency.

4.Wide application range

Compatibility with multiple types of goods: Can transport goods with different temperature requirements simultaneously (such as through zone control), or meet the special storage requirements of different goods (such as pharmaceutical cold chain, high-end food, etc.).

Application in special scenarios: Suitable for long-distance transportation, sea shipping (with stronger vibration resistance and adaptability to harsh environments), and transportation scenarios with high requirements for power supply stability (such as remote areas or areas with unstable temporary power supply).

5.Easy maintenance and long service life

Modular design: The two units are independently installed, making maintenance and inspection easier. When one unit needs maintenance or repair, the other can still maintain operation, reducing downtime. Extended equipment life: Alternating operation of the two units can distribute the operating load of a single unit, reduce equipment wear, and extend the service life of the entire refrigeration system.

6.Intelligent and digital management

Integrated monitoring system: Equipped with an intelligent monitoring panel that displays the operating status, temperature data, and fault alarms of both units in real time, facilitating remote or local management by operators. Data recording and traceability: Can store historical temperature change data, meeting the traceability requirements of the food and pharmaceutical industries and complying with relevant regulatory standards (such as GSP certification, etc.).

7.Optimized structural design

Rational space utilization: Dual cold machines usually adopt a compact layout, ensuring a balance between the space for refrigeration equipment and the storage area for goods without significantly increasing the volume of the container. Strong durability: The outer shell and internal components are made of corrosion-resistant materials (such as stainless steel, weather-resistant steel, etc.), suitable for various transportation environments such as sea and land transportation.

Dual cold machine refrigerated containers, through the design of “dual-unit redundancy + intelligent control”, outperform single cold machine equipment in terms of reliability, temperature control accuracy, energy efficiency, and applicability. They are particularly suitable for cold chain logistics scenarios involving temperature-sensitive, long-distance, or high-value goods. However, their initial purchase cost is relatively high, and users can make a choice based on the characteristics of the goods and transportation requirements.