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HEAT PUMPS IN SALMON SMOLT HATCHERIES.

Author(s) : JOHANSEN P.

Type of article: Article

Summary

THE FIRST HEAT PUMP SYSTEM IN A SALMON SMOLT (YOUNG SALMON) HATCHERY WAS BUILT IN 1979 IN NORWAY. THE PURPOSE WAS TO WARM THE WATER UP TO 285 K (12 DEG C) FROM FEBRUARY ONWARDS IN ORDER TO BEGIN < START-FEEDING > EARLY, AND TO KEEP THE FISH IN WARMED WATER UNTIL THE NATURAL WATER TEMPERATURE EXCEEDED 283 K (10 DEG C) IN THE SPRING. IT WAS QUITE SUCCESSFUL, BUT LATER CLAIMS THAT THIS UNNATURAL PROCESS WOULD RESULT IN REDUCED RESISTANCE WHEN SMOLTS WERE PUT INTO SALT WATER, AND PROBLEMS WITH PREMATURITY WOULD ARISE. HOWEVER, EXPERIENCE HAS RULED THIS OUT AND THERE ARE NOW ABOUT 230 UNITS IN OPERATION WORLDWIDE.

Details

  • Original title: HEAT PUMPS IN SALMON SMOLT HATCHERIES.
  • Record ID : 1992-1406
  • Languages: English
  • Source: IEA HPC Newsl. - vol. 9 - n. 3
  • Publication date: 1991/09
  • Document available for consultation in the library of the IIR headquarters only.

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