| 摘要 |
A plurality of flat tubes (53, 58), first header/collector tubes (51, 56), and second header/collector tubes (52, 57) are provided to reduce pressure loss in an auxiliary heat exchange unit. Each flat tube (53, 58) has one end thereof connected to a first header/collector tube (51, 56), and the other end thereof connected to a second header/collector tube (52, 57). Of the plurality of flat tubes (53, 58), the flat tubes (53) configure a principal heat exchange unit (50), while the remaining flat tubes (58) configure an auxiliary heat exchange unit (55). The flat tubes (58) in the auxiliary heat exchange unit (55) comprise a smaller number of tubes than the flat tubes (53) in the principal heat exchange unit (50). The total cross-sectional area of a channel (49) per one flat tube (58) provided in the auxiliary heat exchange unit (55) is greater than the total cross-sectional area of the channel (49) per one flat tube (53) provided in the principal heat exchange unit (50). |
