| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a parallel flow type heat exchanger for improving heat exchanging efficiency by suppressing influence of wind speed distribution of airflow passing therethrough, on heat exchanging amount. Ž<P>SOLUTION: This heat exchanger 1 includes two header pipes 2, 3 disposed in parallel with each other at an interval, a plurality of flat tubes 4 disposed between the header pipes 2, 3 at prescribed pitches while vertical refrigerant pathways 5 formed inside are communicated to the inside of the header pipes, and corrugated fins 6 respectively disposed between the flat tubes 4. The flat tubes 4 are disposed in the airflow generated by an air distributing device 20, and the internal flow channel resistance of the flat tube 4 of relatively higher wind speed of the received airflow, is relatively higher than that of the internal flow channel resistance of the flat tubes 4 of relatively low wind speed of the received airflow. The difference in the internal flow channel resistances among the flat tubes 4 is provided by changing cross-sectional areas of the refrigerant pathways 5 or changing the number of refrigerant pathways 5. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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