| 摘要 |
A turbine engine 10 includes a fan 46, a core engine case 62 configured to receive a core airflow 22, and an inner fan case 64. An inner air bypass 30 is defined between the core engine case and the inner fan case, and the engine further includes an outer fan case 66, an outer air bypass 32 defined between the inner fan case and the outer fan case. A first heat exchanger 72 is arranged in the core engine case providing heat exchange between a liquid, preferably fuel (78, fig. 3), and the core airflow to cool a core airflow (22, fig. 3). A second heat exchanger 74 is arranged in the outer air bypass. The second heat exchanger is fluidly coupled to the first heat exchanger to receive the cooled core airflow. The second heat exchanger provides heat exchange between the cooled core airflow and the second portion of airflow to further cool the cooled core airflow. The first heat exchanger may be a shell and tube heat exchanger. The second heat exchanger may be a plate fin heat exchanger. |
