| 摘要 |
PROBLEM TO BE SOLVED: To reduce the size and weight of a heat exchanger used for a body running at a high speed such as aircraft. SOLUTION: In this heat exchanger 3 of a system where a heat exchange between fluids is made through a partition wall, the partition wall is formed of a part of a pod outer wall 17 of the body running at the a high speed, and its surface is formed in a fin-shape. In a heat sink 12 having electronic parts 11 mounted thereon refrigerant gas G1 heated by absorbing heat through a tube T is compressed by a compressor 15, and a superheated refrigerant gas G2 with higher temperature is fed to a fin F1 of the heat exchanger 3 to cool the fin-shaped surface of the pod outer surface 17 forming the partition wall of the heat exchanger 3 by low temperature fresh air A passing through the surface at a high speed.
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