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DEVELOPMENT OF A FINNED EVAPORATOR FOR REFRIGERATORS.

[In Japanese. / En japonais.]

Author(s) : UZUHASHI H., KOBAYASHI N.

Type of article: Article

Summary

A NEW PLATE-FIN EVAPORATOR HAS BEEN DEVELOPED FOR REFRIGERATORS IN WHICH FROST FORMS EASILY. THE EVAPORATOR IS A SERPENTINE TUBE WITH A SMALL NUMBER OF FINS AND AN ELECTRICAL DEFROSTER. THE FINS ARE SEPARATED FROM ONE ANOTHER AND THE FIN PITCH CAN BE ALTERED FREELY. FINS NEAREST THE AIR INLET ARE SPACED FARTHER APART THAN THOSE NEAREST THE AIR OUTLET. COMPARING THIS NEW EVAPORATOR WITH CONVENTIONAL ONES IT IS TO BE NOTED THAT ISOLATED FINS PREVENT THE DEVELOPMENT OF BOUNDARY LAYER FLOW, THEY INCREASE HEAT TRANSFER BY ABOUT 37% AND THE COOLING CAPACITY OF THE REFRIGERATOR BY ABOUT 8%. HEAT TRANSFER CAN ALSO BE INCREASED BY THE KIND OF MATERIAL USED TO MANUFACTURE THE EVAPORATOR. THE DEFROSTING EFFICIENCY IS ALSO IMPROVED AND THE AIR FLOW RESISTANCE IS DECREASED IN VIEW OF THE FACT THAT THE FIN PITCH PREVENTS FROST FROM BLOCKING THE AIR FLOW.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1986-1034
  • Languages: Japanese
  • Source: Refrigeration - vol. 60 - n. 688
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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