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Dongguan Dingxing Industry Co., Ltd.

China (Mainland) | Manufacturer | Contact Details
Experience:
Established 2008
13 years OEM
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Container rain is condensation that forms on the ceiling of a cargo container and drips onto the cargo causing moisture damage.

 

This can result in a container being rejected by a receiver at the port costing the exporter dearly.

 

Relative Humidity & Container Rain

An atmosphere’s humidity is relative to its temperature. This is because cold air can hold less moisture than warm air. A 1m cube of air at 25°C which contains 20g of moisture may have a relative humidity of 80%RH (relative humidity). That means it could potentially hold another 20% (4g) of moisture before becoming saturated (100%RH).

 

However, drop the cube’s temperature to 17°C and the relative humidity will rise to 100%rH even though it contains the same amount of moisture. This is because at the lower temperature the air can no longer hold as much moisture.

 

When this saturated air comes into contact with a surface colder than itself the moisture will condense out onto it.

 

Put this in the context of a logistics operation and it means that when a container is loaded with cargo in a tropical port at an atmosphere of 90%RH and 32°C it will hold about 33g of moisture per cbm;

  

 
       

Preventing Container Rain


The objective is to maintain a humidity below

which condensation forms, and if does form,

to have a system that will react quick enough to absorb the excess moisture prior to droplets forming.

 

It acts as a buffer absorbing excess moisture and helps to maintain the equilibrium between the humidity of the air and the container's contents.

  

Desiccants for shipping, packaging & storage .

 

If you need to control the humidity surrounding your product D&X INDUSTRY will work with your logistics and production departments to design and supply a desiccant solution.

Freephone: 400-880-4668 

 

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