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Multiflex IQF Tunnel Freezing System

Multiflex IQF Tunnel Freezing System . Why do we want to freeze?. Limited fresh markets Seasonal price variation Harvest to maximise production Marketing Customer demand. Common freezing systems used in Australia. Plate freezing Blast freezing (in-box) Chilled brine immersion

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Multiflex IQF Tunnel Freezing System

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  1. Multiflex IQF Tunnel Freezing System

  2. Why do we want to freeze? • Limited fresh markets • Seasonal price variation • Harvest to maximise production • Marketing • Customer demand

  3. Common freezing systems used in Australia • Plate freezing • Blast freezing (in-box) • Chilled brine immersion • Liquid nitrogen immersion

  4. Why look at alternatives? • Quality of imported product • Shelf-life improvements- temperature, glaze • Health issues (sodium content) • Versatility • Alternative uses

  5. Advantages of IQF tunnel freezing • Rapid freezing • Low core temperature when packed (-18 to -23oC) • Very good glaze- adjustable % • Re-freeze post glaze- double glaze possible • No time consuming brine prep/ dump • Very high quality end product • Long shelf life- oxidation, dehydration ($$$), freezer burn • Versatile, adjustable • Alternative uses- fish, vegetables

  6. KM Double belt IQF freezing tunnel

  7. Rapid air movement at -36oC

  8. Horizontal air flow for fish

  9. Glazing unit

  10. Glazing system

  11. End product • Product looks very good • Frozen to -18oC in approximately 20-30 minutes • Good glaze • Very little “snow” • Some loss of appendages (lot of drops) • Shelf life ?

  12. Other notes • Some teething problems • Expensive but need to compare apples with apples • No additional blast freezing required (double/triple handling) - labour savings • Quite large- space considerations • Easy to clean • 400kg/hr but can run continuously with minimal labour • Could have higher throughput but with lower end temperature • Is very versatile

  13. Thanks • This project was supported by funding from the Australian Government Department of Agriculture, Fisheries and Forestry under its Regional Food Producers Innovation and Productivity Program

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