| ISO Shipping Containers or refrigerated containers are | | | | powered generators, which are hooked up to the |
| containers that are used for intermodal freight | | | | container while they are travelling. Some ISO shipping |
| transport, which require refrigeration of temperature | | | | containers are water cooled, and these systems are |
| controlled cargo. They have integrated refrigeration | | | | used when the container is stored in a vessel without |
| units that runs from external electric power supplies | | | | adequate ventilation. |
| from land based sites, container ships or from quays. | | | | Many manufactured products humans consume, will |
| They are used in intermodal freight transport, and | | | | have spent some time in shipping containers. The |
| are key items used in a system known as | | | | introduction of shipping containers led to purpose built |
| containerization or containerisation. They are also | | | | vessels, which started in Denmark in 1951. Shipping |
| known as intermodal transport units are loaded and | | | | containers have revolutionized cargo shipping, and |
| sealed intact onto railroad cars, ships, planes and | | | | today around 90% of non bulk cargo world wide is |
| trucks etc. The introduction of them resulted in huge | | | | transported by shipping containers stacked on ships. |
| improvements in port handling efficiency, which had | | | | Containers are intended to be used constantly. This |
| the effect of lowering freight charges, and lowering | | | | means being loaded with fresh cargo for a new |
| general costs which helps boost the flow of trade. | | | | destination soon after having emptied its previous |
| Another type of refrigeration uses CO2 for cooling. | | | | cargo. Sometimes this is not possible and in some |
| ISO containers using CO2 cooling systems are able to | | | | cases the cost of transporting an empty container to |
| keep the cargo frozen solid for up to 30 days. There | | | | a place where it can be used is considered higher |
| are many types of ISO containers available for | | | | than the worth of the used container. Many shipping |
| different purposes. Ones that use refrigeration are | | | | lines and container leasing companies have become |
| commonly referred to as reefers or just refrigerated | | | | very adept at repositioning empty containers from |
| containers. The impact of containers on society is | | | | areas of low or no demand. However damaged or |
| huge, and consumers all over the world enjoy the | | | | retired containers may also be recycled in the form |
| benefits of fresh produce as a result of them. | | | | of shipping container architecture, or the steel |
| When transportation is over land/road the ISO | | | | content salvaged. |
| shipping containers will be powered from diesel | | | | |