Refrigerated ocean freight

Refrigerated Ocean Freight

Temperature sensitive cargo should be shipped in a refrigerated container, or reefer.  The use of reefers has made it possible for consumers around the world to enjoy fresh produce year round.  Companies that import and export refrigerated products have been able to expand and provide consumers with products that would not be available otherwise.  
Refrigerated containers are usually cooled by their own refrigeration unit hooked up to an outside power source.  Combined with the right ventilation, this technique is relatively inexpensive and keeps cargo at the right temperature during shipping.  Reefers are hooked up to generators or other power sources while docking, loading, unloading, and while in transport.  
Modern ocean cargo ships are equipped with extensive ventilation systems to handle evacuating the heat that is produced by the container units.  If proper ventilation is not available, units can be cooled by water.  However, these units are expensive and aren’t used very often.  Refrigerated containers must be powered at all times to maintain their temperatures.  Ships must be specifically equipped to handle this type of power.  
The ocean freight industry has become increasingly concerned with the environmental impact of using containers that create emissions and burn fuel.  State of the art cryogenic refrigeration units have become more and more popular.  These units use carbon dioxide to cool the container.  The container is self-sufficient and does not require any special ventilation or power hook-ups.  The reduction in manpower combined with the ability to ship these containers with non-refrigerated cargo has made cryogenic container shipping more popular.  Liquid carbon dioxide is expensive, but as fuel costs rise and environmental awareness is on everyone’s minds, it usage is becoming more common.    
Refrigerated container ships are unique in the way that they are designed to carry these individual refrigerated units.  They have multiple power sources and generators that help keep perishable or hazardous cargo at the right temperature setting.  There are many fail safes and automatic generators to ensure that everything is kept at the right temperature.  If one generator fails, another one turns on.   Containers are continually inspected to make sure that their compressors are functioning properly.  
Most refrigerated containers are kept above deck.  This makes them easier to cool, inspect and manage.  Containers stored below deck use a sea water cooling system to keep the equipment from running too hot.  Since most <a href=””title=”Ocean Freight”>ocean freight</a> companies generate a lot of their income transporting refrigerated cargo, they take great care in managing and ensuring the safe transport of these temperature sensitive items.    

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