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  1. Klinge
26 May 2011

Klinge Corporation Expands Transport Refrigeration Offerings with Solution for Food Requiring Ultra-Low Temperature Storage

It has been well documented that a significant increase in the quality of frozen fish and shellfish can be achieved by blast freezing fish to an ultra-low temperature directly after being caught and by controlled thawing.

The shift to lower temperature freezing machinery is growing rapidly around the world. Blast freezing yellowfin tuna and other high value fish to an ultra-low temperature of -60°C (-76°F) substantially reduces transportation costs as the fish can be transported by container ship rather than air-freighted.

Tests have also shown that shelf-life is increased when tuna is frozen to -60°C (-76°F) and thawed, at a time of the customer’s choosing, in a controlled environment

Reliable blast freezing

As part of their acquisition of Norfrig Equipment, Klinge Corporation now offers refrigerated containers for blast freezing cargo from -20°C to -60°C (-4°F to -76°F). Their blast freezer model CBU-30 is used to blast freeze yellowfin tuna, as well as other types of high-value fish.

The CBU-30 is designed primarily for the transportation sector and functions equally well as storage for frozen cargo. The blast freezer ensures full airflow, even in loads with very high cargo internal pressure drops.

Henrik Klinge, President and CEO of Klinge Corporation, said: “The unit’s evaporator fan is designed to press the air through the load to ensure even temperatures throughout the load.”

“Many standard units are not equipped with an evaporator fan designed to accommodate cargos with high-pressure drops.”

Unique defrost system provides controlled thawing

Accompanying the blast freezer is Klinge Corporation’s quick thaw unit model QTU-42 (produced by Morep). The unit stores the product at its ideal process temperature with minimal manual operation.

The QTU-42 has a series of probes that monitor the thawing process by transmitting real-time temperatures to a microprocessor which is then analysed.

The microprocessor calculates the rate of temperature rise in the cargo and adjusts temperature to provide the thaw rate without surpassing the predetermined core and surface temperatures.

“This very controlled thawing method optimises tuna quality by ensuring that the natural red pigmentation of tuna is maintained much longer and that there is minimal drip-loss,” says Mr Klinge.

“Our quick thaw unit saves our customers money as it increases the use of frozen seafood instead of expensive fresh seafood.”

Klinge Corp’s QTU-42 can be used in existing rooms or insulated containers.

Klinge was founded in 1984 as a spin-off of the transport refrigeration equipment department of York International.
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