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Development of an accordion-type, offset-fin heat exchanger for air conditioners.

[In Japanese. / En japonais.]

Author(s) : ITOH M., KOGURE H., MIYAGI M., MOCHIZUKI S., YAGI Y., KUNUGI Y.

Type of article: Article

Summary

To reduce the depth of the indoor heat exchanger in room air conditioners, the authors studied fin and tube heat exchangers and found that they could make the heat transfer coefficient of fins 30% higher than that of conventional fins by reducting louver width and fin pitch. They also improved water drainage on the surface of the fins by adopting accordion-type offset-fin heat exchangers. They found that the material cost of a heat exchanger was minimized when the heat exchanger had a tube 7 mm in diameter, and they were able to increase the heat transfer coefficient of the refrigerant side by developing a new grooved tube 7 mm in diameter. They succeeded in making the heat exchanger 40% thinner than conventional types.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1996-1779
  • Languages: Japanese
  • Source: Trans. JAR - vol. 12 - n. 2
  • Publication date: 1995
  • Document available for consultation in the library of the IIR headquarters only.

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