Patent ID: 8776873
Filing Date: 2014-07-15
Classification: F28D,F28F

Abstract:
1. A heat exchanger comprising: a first header including an inlet of the heat exchanger; a second header downstream from the first header; a first tube defining a first flow pass, the first tube in fluid communication with the first header to receive a fluid from the first header, the first tube including first and second opposing flat broad sides joined by first and second opposing narrow sides; a second tube defining a second flow pass in series with the first flow pass, the second tube in fluid communication with the second header to supply the fluid to the second header from the first tube; a third header coupled to the first tube and the second tube to direct the fluid from the first tube to the second tube, the third header including, wherein the first arcuate recess includes a first radius of curvature measured from a first axis generally parallel to the first planar face, wherein the second arcuate recess includes a second radius of curvature measured from a second axis generally parallel to the second planar face, wherein the first axis and the second axis are located within a first plane generally parallel to and midway between the first and the second opposing flat broad sides of the first tube and the second tube.