| 摘要 |
<p>A tube assembly (10) for an auxiliary heating and air conditioning system includes an inner tube (12) extending longitudinally, an outer tube (18) extending longitudinally and disposed over the inner tube (12), the outer tube (18) including a plurality of ribs (20) for locating the inner tube (12) approximately concentric to the outer tube (18), at least one connector tube (36), and at least one connector (24) interconnecting the at least one connector tube (36) and the outer tube (18) to allow fluid flow between the inner tube (12) and the outer tube (18).</p> |
