Refrigerant tubes for heat exchangers

F - Mech Eng,Light,Heat,Weapons – 28 – F

Patent

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Details

F28F 1/40 (2006.01) B21C 23/10 (2006.01) B21C 37/15 (2006.01) F25B 39/00 (2006.01) F28D 1/03 (2006.01) F28F 3/04 (2006.01) F28F 13/06 (2006.01)

Patent

CA 2180598

A refrigerant tube for use in heat exchangers comprises a flat tube having parallel refrigerant passages in its interior and comprising upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, the reinforcing walls extending longitudinally of the tube and spaced apart from one another by a predetermined distance. The reinforcing walls are each formed with a plurality of communication holes for causing the parallel refrigerant passages to communicate with one another therethrough. Each of the reinforcing walls is 10 to 40% in opening ratio which is the proportion of all the communication holes in the reinforcing wall to the reinforcing wall.

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