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A heat exchanger, such as a radiator, may transfer heat from a liquid and employ a first header tank, a second header tank, a plurality of tubes fluidly joining the first and second header tanks, and a baffle within one of the first or second header tanks. The baffle may be located in a header tank

A heat exchanger, such as a radiator, may transfer heat from a liquid and employ a first header tank, a second header tank, a plurality of tubes fluidly joining the first and second header tanks, and a baffle within one of the first or second header tanks. The baffle may be located in a header tank positioned substantially parallel or perpendicular to a surface upon which a vehicle employing the hear exchanger rests. The baffle may be a wall defining only one slot, a wall defining only one slot that is open through one side of the wall, a wall that defines a plurality of slots, or a wall that defines a plurality of holes. The heat exchanger may further employ fluidly isolated first and second tube and fin sections each defining a self-contained flow path for cooling different liquids. The baffle may slow coolant flow in a flow path.

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1. A heat exchange system comprising: a single-phase fluid heated by a device, wherein the fluid is a liquid coolant flowing through the heat exchanger that does not undergo a phase change during operation of the heat exchanger;a first header tank having a single inlet allowing the fluid into the fi

1. A heat exchange system comprising: a single-phase fluid heated by a device, wherein the fluid is a liquid coolant flowing through the heat exchanger that does not undergo a phase change during operation of the heat exchanger;a first header tank having a single inlet allowing the fluid into the first header tank from the device;a second header tank having a single outlet allowing the fluid into the device from the second header tank;a core section including: a first plurality of tubes fluidly joining the first header tank and the second header tank, the fluid in the first plurality of tubes flowing from the first header tank to the second header tank; anda second plurality of tubes fluidly joining the first header tank and the second header tank, the fluid in the second plurality of tubes flowing from the first header tank to the second header tank; anda baffle within the first header tank, the baffle extending across an entire width and an entire depth of the first header tank to divide the first header tank into a first chamber in direct communication with the first plurality of tubes and a second chamber in direct communication with the second plurality of tubes, and a communication portion which communicates the first chamber and the second chamber, is provided in the baffle; wherein the baffle is disposed upstream of the fluid flow in the first and second plurality of tubes;a first portion of the fluid introduced into the first header tank through the first inlet flows from the first chamber to the second header tank through the first plurality of tubes, and out from within the second header tank through the outlet; anda second portion of the fluid introduced into the first header tank through the inlet flows from the first chamber directly to the second chamber through the communication portion of the baffle, from the second chamber to the second header tank through the second plurality of tubes, and out from within the second header tank through the outlet. 2. The system according to claim 1, wherein the heat exchanger is a radiator within a vehicle and the baffle is located in a header tank positioned substantially parallel to a surface of ground upon which the vehicle rests. 3. The system according to claim 1, wherein the heat exchanger is a radiator within a vehicle and the baffle is located in a header tank positioned substantially perpendicular to a surface of ground upon which the vehicle rests. 4. The system according to claim 1, wherein the baffle is a wall that defines only one slot. 5. The system according to claim 1, wherein the baffle is a wall that defines only one slot that is open through one side of the wall. 6. The system according to claim 1, wherein the baffle is a wall that defines a plurality of slots. 7. The system according to claim 1, wherein the baffle is a wall that defines a plurality of holes. 8. The system according to claim 1, wherein the communication portion is an opening defined by the baffle configured to direct the fluid through the baffle. 9. The system according to claim 8, wherein the opening defined by the baffle is configured to direct the fluid linearly through the baffle in a direction perpendicular to a length of the baffle. 10. The system according to claim 1, wherein the first portion of the fluid and the second portion of the fluid mix in the second header tank. 11. A heat exchange system comprising: a first header tank including an inlet and an outlet;a single-phase fluid, wherein the fluid is a liquid coolant that does not change phase as the liquid coolant flows from the inlet to the outlet;a baffle within the first header tank between the inlet and the outlet, the baffle defining an opening therethrough configured to permit the fluid to flow through the baffle and reduce a flow rate of the fluid flowing through the baffle;a partition wall within the first header tank between the baffle and the outlet;a first tank chamber defined between the inlet and the baffle;a second tank chamber defined between the baffle and the partition wall, the baffle is configured to permit flow of the fluid directly from the first chamber to the second chamber;a third tank chamber defined between the partition wall and the outlet, the second tank chamber is between the first and the third tank chambers, the partition wall configured to prevent flow of the fluid from the second chamber directly into the third chamber;a second header tank;a first plurality of tubes extending from the first tank chamber to the second header tank;a second plurality of tubes extending form the second tank chamber to the second header tank;a third plurality of tubes extending from the second header tank to the third tank chamber;wherein: a first portion of the fluid introduced into the first header tank through the inlet flows from the first chamber to the second header tank through the first plurality of tubes, from the second header tank to the third chamber through the third plurality of tubes, and out from within the first header tank through the outlet;a second portion of the fluid introduced into the first header tank through the inlet flows from the first chamber directly to the second chamber through the opening of the baffle, from the second chamber to the second header tank through the second plurality of tubes, from the second header tank to the third chamber through the third plurality of tubes, and out from within the first header tank through the outlet; andthe baffle decreases the flow rate of the second portion of the fluid as the second portion of fluid flows through the opening defined by the baffle. 12. The heat exchange system of claim 11, wherein the second header tank defines only a single chamber. 13. The heat exchange system of claim 11, wherein the partition wall is solid, the inlet is a single inlet of the first header tank, and the outlet is a single outlet of the first header tank. 14. The heat exchange system of claim 11, wherein the first portion of the fluid and the second portion of fluid mix in the second header tank. 15. The heat exchange system of claim 11, wherein the baffle extends across an entire width and an entire depth of the first header tank. 16. The heat exchange system of claim 11, wherein: the first plurality of tubes include a plurality of first fins therebetween;the second plurality of tubes include a plurality of second fins therebetween; andthe third plurality of tubes include a plurality of third fins therebetween. 17. The heat exchange system of claim 11, wherein the heat exchanger is a vehicle radiator. 18. A heat exchange system comprising: a first header tank including an inlet and an outlet;a single-phase fluid, wherein the fluid is a liquid coolant that does not change phase as the liquid coolant flows from the inlet to the outlet;a partition wall in the first header tank between the inlet and the outlet defines a first tank chamber at an inlet side of the partition wall and a second tank chamber at an outlet side of the partition wall, the partition wall prevents flow of the fluid directly from the first tank chamber to the second tank chamber;a second header tank;a baffle within the second header tank defining an opening therethrough configured to permit the fluid to flow through the baffle and to reduce a flow rate of the fluid flowing through the baffle;the baffle defines a third tank chamber on an upstream side of the baffle and a fourth tank chamber on a downstream side of the baffle;a first plurality of tubes extending from the first tank chamber of the first header tank to the third tank chamber of the second header tank; anda second plurality of tubes extending from the fourth tank chamber of the second header tank to the second tank chamber of the first header tank; anda third plurality of tubes extending from the third tank chamber of the second header tank to the second tank chamber of the first header tank;wherein: the fluid introduced into the first header tank through the inlet flows from the first tank chamber to the third tank chamber of the second header tank through the first plurality of tubes,a first portion of the fluid introduced into the third tank chamber flows from the third tank chamber to the second tank chamber through the third plurality of tubes, and out from within the first header tank through the outlet;a second portion of the fluid introduced into the third tank chamber flows from the third tank chamber directly to the fourth tank chamber through the opening of the baffle, from the fourth tank chamber to the second tank chamber through the second plurality of tubes, and out from within the first header tank through the outlet; andthe baffle decreases the flow rate of the fluid as the fluid flows through the opening defined by the baffle. 19. The heat exchange system of claim 18, wherein the heat exchanger is a radiator of a vehicle. 20. The heat exchange system of claim 18, wherein the partition wall is solid, the inlet is a single inlet of the first header tank, and the outlet is a single outlet of the first header tank. 21. The heat exchange system of claim 18, wherein the baffle extends across an entire width and an entire depth of the second header tank. 22. The heat exchange system of claim 18, wherein: the first plurality of tubes include a plurality of first fins therebetween; andthe second plurality of tubes include a plurality of second fins therebetween. 23. The heat exchange system of claim 22, wherein the fluid is a first fluid, the inlet is a first inlet, the outlet is a first outlet, and the partition wall is a first partition wall, the heat exchanger further comprising: a second partition wall in the first header tank defining a fifth chamber on a side of the second chamber opposite to the first chamber such that the second chamber is between the first and fifth chambers, the second partition wall prevents direct fluid communication between the second and fifth chambers;a third partition wall in the first header tank on a side of the second partition wall opposite to the second chamber to define a sixth chamber on a side of the fifth chamber opposite to the second chamber, the fifth chamber is between the second and the sixth chambers, the third partition wall prevents direct fluid communication between the fifth and sixth chambers;a fourth partition wall in the second header tank defining a seventh chamber on a side of the fourth chamber opposite to the third chamber such that the fourth chamber is between the third and the seventh chambers, the fourth partition wall prevents direct fluid communication between the fourth and seventh chambers; anda second inlet and a second outlet of the first header tank, the second inlet in fluid communication with the sixth chamber and the second outlet in fluid communication with the fifth chamber;a fourth plurality of tubes extending from the sixth chamber to the seventh chamber; anda fifth plurality of tubes extending from the seventh chamber to the fifth chamber, the fourth plurality of tubes are between the second plurality of tubes and the fifth plurality of tubes;wherein: a second fluid, which is different and separate from the first fluid, introduced into the sixth chamber of first header tank through the second inlet flows from the sixth chamber to the seventh chamber through the fifth plurality of tubes, from the seventh chamber to the fifth chamber of the first header tank through the fourth plurality of tubes, and out from within the fifth chamber and the first header tank through the second outlet. 24. The heat exchange system of claim 23, wherein: the fourth plurality of tubes include a plurality of third fins therebetween; andthe fifth plurality of tubes include a plurality of fourth fins therebetween. 25. The heat exchange system of claim 24, wherein the second fluid does not change phase as the second fluid flows from the second inlet to the second outlet.