TransNowTransportation Northwest
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The liquid carbon dioxide is pumped into an ISO container or rail car that has been fitted with the TranSnow system and loaded with frozen food.
One load of snow can easily keep a cargo cold up to 14 days, and TranSnow C[O.sub.2] has sent loads on shipments longer than 21 days, Oliver says.
The most common use of TranSnow systems has been in shipments to the Caribbean and Central and South America.
TranSnow owns or leases several rail cars fitted with its C[O.sub.2] snow system.
The C|O.sub.2~ unit cuts costs by a third, reduces container weight, and avoids the risks of mechanical breakdown and food spoilage, according to Zachary Schulman, president of TranSnow. Because traditional Chlorofluorocarbon refrigerants -- R-12, R-22 and R-502 -- will be phased out by 1996, the frozen food industry will be forced to find an alternative.
"We are now negotiating with a number of frozen food processors who want to buy our system for domestic and international transportation." Since about a year ago TranSnow has been using 50 converted 40-foot containers in shipments to and from Puerto Rico, between California and Hawaii and New Jersey and Bermuda, and within the continental United States.
Dry ice is nothing new, but TranSnow has a patent on the configuration of stainless steel tubing in its spray header, which is said to be 50% more efficient than traditional systems at converting liquid C|O.sub.2~ to snow.