| 摘要 |
A first fluid connecting passage for connecting a first tank cavity (77) with a first tube (16a), and a second fluid connecting passage for connecting a second tank cavity (76) with a second tube (43a), are formed from through-holes in a plate member (752) of a tank (75) in a heat exchanger. When an upstream-side first tube group (16b) configured from a plurality of first tubes (16a) in an upstream-side heat exchanger section (71), and a downstream-side first tube group (16c) configured from a plurality of first tubes (16a) in a downstream-side heat exchanger section (72) are configured in a manner such that the group in which first fluid pressure loss increases is the high-pressure-loss-side first tube group (16b), and the group in which first fluid pressure loss decreases is the low-pressure-loss-side first tube group (16c), the flow path resistance between the high-pressure-loss-side first tube group (16b) and the first tank cavity (77) is lower than the flow path resistance between the low-pressure-loss-side first tube group (16c) and the first tank cavity (77). |
