With halogenated hydrocarbons progressively being phased out by the refrigeration industry
due to their ozone depleting property, CO2 has become the most agreeable refrigerant available
to day. Though CO2 itself is being blamed as a green house gas, it has several useful role in
to day's industrial world. It plays a critical role in food preservation, especially fresh produce
through modified atmosphere storage technology. Dry ice, a by-product from alcohol industry
is frozen CO2, achieved through compression but finds little use due to inconvenience inherent
in its handling. Latest development of freezers based on CO2 will go a long way in addressing
the exacting need of the refrigeration industry.
"The system is Food Lion's first "cascading" CO2( )refrigeration cycle, which uses a single system and just
one condensing unit to refrigerate and freeze foods. Before Kysor//Warren developed this system, grocers
incorporating CO2 refrigeration systems needed two condensing units as well as a freezer-specific system
and a refrigeration (medium temperature) specific system. This is Kysor//Warren's first CO2( )advanced
refrigeration system in a retail grocery store setting".
The CO2 based cooling system, if proved to be as per the expectations of the food industry
may make an immediate impact in many developed countries where cold chain and cold storage
systems are well established and are an integral part of the retail net work. How far this is
relevant to countries like India with practically no worthwhile refrigeration infrastructure existing,
as of now, is to be seen.