| 摘要 |
<p>The exchanger (110) has circulation circuits (111, 112) for respectively receiving fresh air and depleted air, where the circulation circuits comprise common heat exchange surfaces. Each circuit has concentric annular pipes (1110-1115) connected between them and formed of respective walls (130-140). The walls of each pipe are mechanically uncoupled from each other. Heat insulation material layers (103a, 103b) are respectively placed around the external periphery and on an upper part of the exchanger.</p> |
