Patent ID: 7506683

Claim:
A combo cooler heat exchanger, comprising: a plurality of first tubes; a plurality of second tubes; a first end tank; a second end tank opposite the first end tank; and the plurality of first tubes in fluid communication with the first and second end tanks and adapted to have a first fluid flow therethrough; the plurality of second tubes in fluid communication with the first and second end tanks and adapted to have a fluid flow therethrough; at least one first tube of the plurality of first tubes adjacent to another first tube; at least one second tube of the plurality of second tubes adjacent to another second tube; at least one first fin interposed between adjacent first tubes; and at least one second fin interposed between adjacent second tubes; wherein the plurality of first tubes and the plurality of second tubes are basically parallel to one another and are connected with the same pair of tanks, and the first fin has different characteristics from the second fin, wherein the hydraulic diameter of the first tubes is greater than the hydraulic diameter of the second tubes and wherein the at least one first fin, on a per fin basis, has an air contact area less in area than the at least one second fin, on a per fin basis and wherein the height of the at least one second fin is greater than that of the at least first fin and wherein the pitch of the at least one second fin is less than the pitch of the at least one first fin.