Heat exchanger tube for an air-conditioning apparatus

Details Heat exchanger tube for an air-conditioning apparatus Heat exchanger tube for an air-conditioning apparatus

1996-05-16

1999-12-14

Leo, Leonard R.

Heat exchange

With coated, roughened or polished surface

165183, F28F 140

Patent

active

060004665

ABSTRACT:
A groove configuration, formed on an inside wall of a heat exchanger tube, has a cross-sectional area varying in the longitudinal direction of the heat exchanger tube. An increased rate of the cross-sectional area is differentiated from a decreased rate of the cross-sectional area by changing the height or top width of a protruding portion, or the depth or bottom width of a recessed portion.

REFERENCES:
patent: 4733698 (1988-03-01), Sato
patent: 5052476 (1991-10-01), Sukumoda et al.
patent: 5186252 (1993-02-01), Nishizawa et al.
patent: 5333682 (1994-08-01), Liu et al.

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