Heat exchanger tube and heat exchanger

  • US 20040069477A1
  • Filed: 10/29/2003
  • Published: 04/15/2004
  • Est. Priority Date: 11/24/2000
  • Status: Active Grant
First Claim
Patent Images

1. (amended) a heat exchanger tube provided with a flat tube main body with a certain length having a plurality of refrigerant flow passages each extending in a tube longitudinal direction and disposed in parallel in a tube widthwise direction, wherein the following relations are established:

  • Ac/At×

    100=30 to 45; and

    P/L×

    100=200 to 325, wherein a total cross-sectional area of the tube main body (including the refrigerant passage portions) is “

    At”

    ;

    a total cross-sectional area of the refrigerant flow passages is “

    Ac”

    ;

    an external peripheral length of the tube main body is “

    L”

    ; and

    a total internal peripheral length of the refrigerant passages is “

    P”

    .

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