Heat exchanger and heat pump system using same

摘要

In a heat exchanger of a heat pump system having a main core portion, a subcool core portion, and a receiver tank, the main core portion and the subcool core portion are constituted by a pair of header tanks arranged apart from each other in a vertical direction, a plurality of tubes arranged so as to extend in the vertical direction between the header tanks and having the pair of header tanks communicate with each other, and fins arranged between the adjacent tubes, and a first channel having a refrigerant pass through the main core portion, the receiver tank, and the subcool core portion in order and a second channel having the refrigerant pass only through the main core portion in a direction opposite to that of the first channel are provided.