CRYOGENICS
Mobile
and independent containers with cryogenic refrigeration
offer a lot of possibilities, most of the time unrecognized.
Dry Ice is well known as a cooling agent for frozen foodstuffs,
and during recent years this application for containers has
significantly evolved.
The
insulated container
is fitted with a
Siber System® Tank
designed to
receive the cooling agent. Dry Ice is the result of the release of
liquid CO2 in air, and as soon as it has been produced, the Dry Ice
starts to sublimate at a temperature of –78.5°C and provides a cold
energy capacity of 150 K/Cal per Kilo.
In the case of the Siber System®, the release of the liquid CO2 is done
inside the
Siber System® Tank.
The conversion efficiency of liquid to solid is 44%, better than in any other cryogenic application
such as
blast freezer tunnel or cold room.
The bulk tank of liquid CO2, located outside the building, is linked to
the
Siber Station gun
using insulated pipes. This gun has a double
purpose:-
- inject the exact quantity of Dry Ice required according to the journey
- exhaust the residual gases produced during the release.
The
Siber System®
Station can be located in a closed room.
The Siber Station is managed by computer automation, calculating the exact dose
of Dry Ice to be injected, according the parameters of the consignment :
chilled (+2/+4°C) or frozen (-18°C) product temperature, ambient(s)
temperature(s), including waiting time on docks and at point
of arrival, transit time from the cold room to the display,
and so on... This adjusted case by case injection optimizes
the energy cost.
The standard
Siber System®
is designed and calibrated for a 24 hours distribution with high ambient temperatures.
Today, more than 30 000
containers
fitted with
Siber System® Tanks are in use at more than 20 client locations all over the world.