| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an inexpensive air heat exchanger being capable of reducing the usage of cooling medium, and having heat exchanging capability.SOLUTION: A first heat transfer tube group 31A consists of six first cooling medium flow paths 31a-31f arranged on the side of a liquid pipe, and a second heat transfer tube group 32A consists of three second cooling medium flow paths 32a-32c arranged on the side of a gas pipe. The number of heat transfer tubes of the first heat transfer tube group 31A is set to be twice the number of heat transfer tubes of the second heat transfer tube group 32A. In second flow dividers 42a-42c, one-end portions of two of the first cooling medium flow paths 31a-31f are both connected to a one-end portion of one of the second cooling medium flow paths 32a-32c. For the first cooling medium flow paths 31a-31f and the second cooling medium flow paths 32a-32c, a value obtained by dividing the diameter of the heat-transfer heat transfer tube in each of the second cooling medium flow paths 32a-32c by the diameter of the heat-transfer heat transfer tube in each of the first cooling medium flow paths 31a-31f is greater than 1.35 and smaller than 2.25.</p> |
