Reasons Why Cargo Holds Need To Be Ventilated During Sea Transportation
The following content was shared by Jiaxing Heyuan Supply Chain Co.,Ltd
1. Protect goods from moisture deterioration
Dry goods moisture absorption: Many dry goods, such as grain, cotton, tea, etc., in the transportation process if the environmental humidity is too high, easy to absorb water. For example, grain may germinate, mildew, reduce quality and even lose edible value after hygroscopic; Tea moisture absorption will affect the taste and aroma, serious deterioration can not be sold. Through ventilation, relatively dry air can be introduced to reduce the humidity in the cargo hold and prevent damage to the cargo due to moisture absorption.
Avoid sweat phenomenon: When the temperature in the cargo hold changes greatly, the bulkhead and the cargo surface may appear "sweat phenomenon", that is, water vapor condenses into droplets. For example, on routes where the temperature difference between day and night is large, the temperature decreases at night, and the water vapor in the cabin will condense on the cold bulkhead and cargo surface. Ventilation can effectively regulate the temperature and humidity in the cargo hold, reduce this moisture condensation, and protect the cargo.
2. Reduce harmful gas concentration
Some goods will volatilize harmful gases during transportation. For example, coal will release flammable gases such as methane, and sulfur will volatilize irritating gases such as sulfur dioxide. These gases may not only cause damage to the cargo itself, but also threaten the life safety of the crew. Ventilation can discharge these harmful gases from the cargo hold, reduce their concentration, and ensure transportation safety.
Microbial action produces gases
Some goods containing water and organic matter, such as fruits, vegetables, etc., will breathe and produce gases such as carbon dioxide under the action of microorganisms. If the concentration of carbon dioxide is too high, it will affect the preservation effect of the goods, and even accelerate the decay of the goods. Ventilation can discharge these gases in time to maintain a good gas environment in the cargo hold.
3. Adjust cargo hold temperature
Avoid heat damage: During hot weather or when passing through tropical areas, the temperature in the cargo hold may rise sharply. For some temperature-sensitive goods, such as rubber products may soften and deform at high temperatures, and chemical products may undergo chemical reactions that lead to quality changes. Ventilation can introduce relatively low temperature air from the outside, reduce the temperature in the cargo hold, and prevent the cargo from being damaged by high temperature.
Low temperature protection: In cold regions or seasons, some goods may be damaged by low temperatures, such as liquid goods may freeze, affecting their handling and use. Through ventilation, the temperature in the cargo hold can be properly adjusted to avoid the impact of low temperature on the cargo. But this is relatively rare, more often to prevent high temperatures. Principle of natural ventilation
