In a heat exchanging apparatus for a vapor compression refrigerant cycle,
an internal heat exchanger is attached to an end of a radiator. The
internal heat exchanger is arranged such that high-pressure refrigerant
passages are closer to the radiator than low-pressure refrigerant
passages. The heat exchanging apparatus can be mounted on a vehicle such
that the radiator receives cooling air more than the internal heat
exchanger. Because the internal heat exchanger performs heat exchange
between high-pressure refrigerant and low-pressure refrigerant,
performance of the internal heat exchanger is not degraded even if it is
located at a part receiving less cooling air. Thus, the heat exchanging
apparatus is easily mounted on a vehicle by integrating the internal heat
exchanger with the radiator, without reducing a cooling capacity of the
radiator.