| 摘要 |
A heat exchanger coil assembly is provided. The fins of the assembly include lance style enhancements on a corrugated shape of the fin. Lances are provided on both the upstream and the downstream sides of each corrugation. The upstream lance forms a first angle with respect to a direction of mean airflow and the downstream lance forms a second angle with respect to the direction of mean airflow. The first and second angles are not equal, such that the lances are canted with respect to one another. This generates two different streams of air flow such that a wake of the upstream lance will not impinge on the downstream lance, thereby maximizing heat transfer for both the upstream and the downstream lances.
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