A variety of ammonia refrigeration applications, from cold storage to quick-freezing to ice making, were showcased at the Seafood Expo North America/Seafood Processing North America shows, co-located at the Boston Convention and Exhibition Center last week. A growing trend is the use of ammonia-carbon dioxide systems, which reduce the ammonia charge and improve safety.
“Processors want to eliminate ammonia in the processing area and use CO2 there,” said Bud Martinson, Mayekawa’s sales manager, freezer division. “The ammonia can then be isolated in the refrigeration room.” The dual-refrigerant system also can go to lower temperatures.
“It’s a new refrigeration system in an existing plant,” he said. “They took out a nitrogen (cryogenic) system and put in an ammonia/CO2 mechanical freezer.” He said this type of transition is ‘unusual’.”
That E-mail already exists on our list !