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Heat exchanger tubes are disclosed herein. An embodiment of a heat exchanger tube includes a tube body having two opposed sides. A plurality of exterior flow passages is defined in the tube body adjacent one of the two opposed sides. A plurality of interior flow passages is defined in the tube body

Heat exchanger tubes are disclosed herein. An embodiment of a heat exchanger tube includes a tube body having two opposed sides. A plurality of exterior flow passages is defined in the tube body adjacent one of the two opposed sides. A plurality of interior flow passages is defined in the tube body adjacent the plurality of exterior flow passages. The plurality of exterior flow passages has at least one of an average hydraulic diameter or an average width that is i) greater than at least one of an average hydraulic diameter or an average width of the interior flow passages and ii) less than twice the at least one of the average hydraulic diameter or the average width of the interior flow passages.

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1. A heat exchanger, comprising: a heat exchanger tube, including: a tube body having two opposed sides;a plurality of exterior flow passages defined in the tube body adjacent one of the two opposed sides;a second plurality of exterior flow passages defined in the tube body adjacent an other of the

1. A heat exchanger, comprising: a heat exchanger tube, including: a tube body having two opposed sides;a plurality of exterior flow passages defined in the tube body adjacent one of the two opposed sides;a second plurality of exterior flow passages defined in the tube body adjacent an other of the two opposed sides;a plurality of interior flow passages defined: in the tube body adjacent the plurality of exterior flow passages; andbetween the plurality of exterior flow passages and the second plurality of exterior flow passages;a plurality of intermediate flow passages defined in the tube body between i) the plurality of exterior flow passages and the plurality of interior flow passages and ii) the second plurality of exterior flow passages and the plurality of interior flow passages;the plurality of exterior flow passages having at least one of an average hydraulic diameter or an average width that is i) greater than at least one of an average hydraulic diameter or an average width of the interior flow passages and ii) less than twice the at least one of the average hydraulic diameter or the average width of the interior flow passages;the second plurality of exterior flow passages having at least one of an average hydraulic diameter or an average width that is i) greater than the at least one of the average hydraulic diameter or the average width of the interior flow passages and ii) less than twice the at least one of the average hydraulic diameter or the average width of the interior flow passages; andthe intermediate flow passages having at least one of an average hydraulic diameter and an average width that is between the at least one of the average hydraulic diameter or the average width of the exterior flow passages and the at least one of the average hydraulic diameter or the average width of the interior flow passages;wherein each flow passage of the plurality of exterior flow passages, the second plurality of exterior flow passages, the plurality of interior flow passages, and the plurality of intermediate flow passages is to be in fluid communication with a same end tank. 2. The heat exchanger as defined in claim 1 wherein the at least one of the average hydraulic diameter or the average width of exterior flow passages ranges from about 0.58 mm to about 0.60 mm, wherein the at least one of the average hydraulic diameter or the average width of the interior flow passages ranges from about 0.50 mm to about 0.54 mm, and wherein the at least one of the average hydraulic diameter or the average width of the intermediate flow passages ranges from about 0.55 mm to about 0.57 mm. 3. The heat exchanger as defined in claim 1 wherein each of the exterior and interior flow passages are fluidly separate from each of the other exterior and interior flow passages. 4. The heat exchanger as defined in claim 1 wherein a ratio of the at least one of the average hydraulic diameter or the average width of the exterior flow passages to the at least one of the average hydraulic diameter or the average width of the interior flow passages ranges from about 1.1 to about 1.5. 5. The heat exchanger as defined in claim 1 wherein the at least one of the average hydraulic diameter or the average width of the exterior flow passages and the at least one of the average hydraulic diameter or the average width of the interior flow passages are configured together to increase thermal performance and reduce flow passage plugging of the heat exchanger tube. 6. The heat exchanger as defined in claim 1 wherein the at least one of the average hydraulic diameter or the average width of the exterior flow passages is equal to or less than 0.60 mm, and wherein the at least one of the average hydraulic diameter or the average width of the interior flow passages is equal to or greater than 0.20 mm. 7. The heat exchanger as defined in claim 1 wherein the at least one of the average hydraulic diameter or the average width of the exterior flow passages is greater than 0.30 mm. 8. The heat exchanger as defined in claim 1 wherein at least one exterior flow passage in the plurality of exterior flow passages has at least one of a hydraulic diameter or width that is different than at least one other exterior flow passage in the plurality of exterior flow passages. 9. The heat exchanger as defined in claim 1 wherein at least one interior flow passage in the plurality of interior flow passages has at least one of a hydraulic diameter or width that is different than at least one other interior flow passage in the plurality of interior flow passages. 10. The heat exchanger as defined in claim 1 wherein the plurality of exterior flow passages make up from about 5% to about 30% of a total number of flow passages in the heat exchanger tube. 11. A method for enhancing thermal performance and reducing flow passage plugging of a heat exchanger tube in a heat exchanger, the method comprising: defining a plurality of exterior flow passages in a tube body adjacent one of two opposed sides of the tube body, wherein the plurality of exterior flow passages has at least one of a first predetermined average hydraulic diameter or a first predetermined average width;defining a plurality of interior flow passages in the tube body adjacent the plurality of exterior flow passages, wherein the plurality of interior flow passages has at least one of a second predetermined average hydraulic diameter or a second predetermined average width;the at least one of the first predetermined average hydraulic diameter or first predetermined average width being i) greater than the at least one of the second predetermined average hydraulic diameter or the second predetermined average width and ii) less than twice the at least one of the second predetermined average hydraulic diameter or the second predetermined average width;defining a second plurality of exterior flow passages in the tube body adjacent an other of the two opposed sides, the second plurality of exterior flow passages having at least one of a third predetermined average hydraulic diameter or a third predetermined average width that is i) greater than the at least one of the second predetermined average hydraulic diameter or the second predetermined average width and ii) less than twice the at least one of the second predetermined average hydraulic diameter or the second predetermined average width; anddefining a plurality of intermediate flow passages in the tube body between i) the plurality of exterior flow passages and the plurality of interior flow passages and ii) the second plurality of exterior flow passages and the plurality of interior flow passages, and wherein the intermediate flow passages have at least one of a fourth predetermined average hydraulic diameter or a fourth predetermined average width that is between i) at least one of a) the at least one first predetermined average hydraulic diameter or first predetermined average width or b) the at least one of the third predetermined average hydraulic diameter or the third predetermined average width and ii) the at least one of the second predetermined average hydraulic diameter or the second predetermined average width;wherein each flow passage of the plurality of exterior flow passages, the second plurality of exterior flow passages, the plurality of interior flow passages, and the plurality of intermediate flow passages is to be in fluid communication with a same end tank. 12. The method as defined in claim 11 wherein at least one of the first and third predetermined average hydraulic diameters or the first and third predetermined average widths range from about 0.58 mm to about 0.60 mm, wherein the at least one of the second predetermined average hydraulic diameter or the second predetermined average width ranges from about 0.50 mm to about 0.54 mm, and wherein the at least one of the fourth predetermined average hydraulic diameter or the fourth predetermined average width ranges from about 0.55 mm to about 0.57 mm. 13. The method as defined in claim 11, further comprising fluidly separating each of the exterior and interior flow passages from each of the other exterior and interior flow passages during defining. 14. The method as defined in claim 11 wherein at least one of the first predetermined average hydraulic diameter or the first predetermined average width ranges from about 0.30 mm to about 0.60 mm. 15. A heat exchanger assembly, comprising: a first end tank;a second end tank opposite the first end tank;a plurality of tubes in fluid communication with the first and second end tanks;a plurality of fins disposed between each of the tubes; andat least one tube in the plurality of tubes including: a tube body having two opposed sides;a plurality of exterior flow passages defined in the tube body adjacent one of the two opposed sides;a plurality of interior flow passages defined in the tube body adjacent the plurality of exterior flow passages;the plurality of exterior flow passages having at least one of an average hydraulic diameter or an average width that is i) greater than at least one of an average hydraulic diameter or an average width of the interior flow passages and ii) less than twice the at least one of the average hydraulic diameter or the average width of the interior flow passages;a second plurality of exterior flow passages defined in the tube body adjacent an other of the two opposed sides, the second plurality of exterior flow passages having at least one of an average hydraulic diameter or an average width that is i) greater than the at least one of the average hydraulic diameter or the average width of the interior flow passages and ii) less than twice the at least one of the average hydraulic diameter or the average width of the interior flow passages, and wherein the plurality of interior flow passages is defined between the plurality of exterior flow passages and the second plurality of exterior flow passages; anda plurality of intermediate flow passages defined in the tube body between i) the plurality of exterior flow passages and the plurality of interior flow passages and ii) the second plurality of exterior flow passages and the plurality of interior flow passages, and wherein the intermediate flow passages have at least one of an average hydraulic diameter and an average width that is between the at least one of the average hydraulic diameter or the average width of the exterior flow passages and the at least one of the average hydraulic diameter or the average width of the interior flow passages wherein each flow passage of the plurality of exterior flow passages, the second plurality of exterior flow passages, the plurality of interior flow passages, and the plurality of intermediate flow passages is to be in fluid communication with a same end tank. 16. The heat exchanger assembly as defined in claim 15 wherein the at least one of the average hydraulic diameter or the average width of the exterior flow passages ranges from about 0.58 mm to about 0.60 mm, wherein the at least one of the average hydraulic diameter or the average width of the interior flow passages ranges from about 0.50 mm to about 0.54 mm, and wherein the at least one of the average hydraulic diameter or the average width of the intermediate flow passages ranges from about 0.55 mm to about 0.57 mm. 17. A heat exchanger, comprising: a heat exchanger tube, including: a tube body having two opposed sides;an external flow passage defined in the tube body adjacent each of the two opposed sides, each of the external flow passages having at least one of a first predetermined hydraulic diameter or a first predetermined width;a first internal flow passage defined in the tube body adjacent each of the external flow passages, each of the first internal flow passages having the at least one of the first predetermined hydraulic diameter or the first predetermined width;a second internal flow passage defined in the tube body adjacent each of the first internal flow passages, each of the second internal flow passages having at least one of a second predetermined hydraulic diameter or a second predetermined width that is smaller than the at least one of the first predetermined hydraulic diameter or the first predetermined width; anda third internal flow passage defined in the tube body adjacent each of the second internal flow passages, each of the third internal flow passages having at least one of a third predetermined hydraulic diameter or a third predetermined width that is smaller than the at least one of the second predetermined hydraulic diameter or the second predetermined width;wherein a ratio of the at least one of the first predetermined hydraulic diameter or the first predetermined width to the at least one of the third predetermined hydraulic diameter or the third predetermined width ranges from about 1.1 to about 1.5;and wherein the external flow passages, the first internal flow passage, the second internal flow passage, and the third internal flow passage are each to be in fluid communication with a same end tank.